dancers can be removed

Removed GitHub Releases Downloads badge from README.

.github/workflows/python-app.yml

@@ -84,6 +84,33 @@ jobs:
             - name: Setup Python
               run: uv python install
 
+            - name: Install dependencies
+              run: uv sync
+
+            - name: Copy libaudio to project root (Windows)
+              if: runner.os == 'Windows'
+              shell: bash
+              run: |
+                  cp libs/audio/*.dll . 2>/dev/null || echo "libaudio not found"
+
+            - name: Copy libaudio to project root (macOS)
+              if: runner.os == 'macOS'
+              shell: bash
+              run: |
+                  cp libs/audio/libaudio.dylib . 2>/dev/null || echo "libaudio not found"
+
+            - name: Copy libaudio to project root (Linux)
+              if: runner.os == 'Linux'
+              shell: bash
+              run: |
+                  cp libs/audio/libaudio.so . 2>/dev/null || echo "libaudio not found"
+
+            - name: Run tests (excluding audio tests)
+              run: uv run pytest test/libs/ -v --tb=short --color=yes --ignore=test/libs/test_audio.py
+              continue-on-error: false
+              env:
+                  PYTHONPATH: ${{ github.workspace }}
+
             - name: Build Executable
               shell: bash
               run: |

.github/workflows/tests.yml

@@ -0,0 +1,129 @@
+name: Tests
+
+on:
+    push:
+        branches: [main, master, develop]
+    pull_request:
+        branches: [main, master, develop]
+    workflow_dispatch:
+
+permissions:
+    contents: read
+
+jobs:
+    test:
+        strategy:
+            fail-fast: false
+            matrix:
+                os: [ubuntu-22.04, windows-latest, macos-latest]
+                python-version: ["3.12"]
+
+        runs-on: ${{ matrix.os }}
+
+        steps:
+            - name: Check-out repository
+              uses: actions/checkout@v4
+
+            - name: Install libaudio Dependencies (macOS)
+              if: runner.os == 'macOS'
+              run: |
+                  brew update
+                  brew install portaudio libsndfile speexdsp ccache
+
+            - name: Install libaudio Dependencies (Windows)
+              if: runner.os == 'Windows'
+              uses: msys2/setup-msys2@v2
+              with:
+                  update: true
+                  install: >-
+                      base-devel
+                      mingw-w64-x86_64-gcc
+                      mingw-w64-x86_64-libsndfile
+                      mingw-w64-x86_64-speexdsp
+                      mingw-w64-x86_64-ccache
+
+            - name: Install libaudio Dependencies (Linux)
+              if: runner.os == 'Linux'
+              run: |
+                  sudo apt-get update
+                  sudo apt-get install -y \
+                    build-essential \
+                    pkg-config \
+                    libsndfile1-dev \
+                    libspeexdsp-dev \
+                    portaudio19-dev \
+                    libpulse-dev \
+                    ccache
+
+            - name: Build libaudio (Windows)
+              if: runner.os == 'Windows'
+              shell: msys2 {0}
+              run: |
+                  cd libs/audio
+                  make clean
+                  make all
+                  make verify
+
+            - name: Build libaudio (Unix)
+              if: runner.os != 'Windows'
+              shell: bash
+              run: |
+                  cd libs/audio
+                  make clean
+                  make all
+                  make verify
+
+            - name: Copy libaudio to project root (Windows)
+              if: runner.os == 'Windows'
+              shell: bash
+              run: |
+                  cp libs/audio/*.dll . 2>/dev/null || echo "libaudio not found"
+
+            - name: Copy libaudio to project root (macOS)
+              if: runner.os == 'macOS'
+              shell: bash
+              run: |
+                  cp libs/audio/libaudio.dylib . 2>/dev/null || echo "libaudio not found"
+
+            - name: Copy libaudio to project root (Linux)
+              if: runner.os == 'Linux'
+              shell: bash
+              run: |
+                  cp libs/audio/libaudio.so . 2>/dev/null || echo "libaudio not found"
+
+            - name: Install uv
+              uses: astral-sh/setup-uv@v4
+
+            - name: Setup Python ${{ matrix.python-version }}
+              run: uv python install ${{ matrix.python-version }}
+
+            - name: Install dependencies
+              run: uv sync
+
+            - name: Run tests (excluding audio tests)
+              run: uv run pytest test/libs/ -v --tb=short --color=yes --ignore=test/libs/test_audio.py
+              continue-on-error: false
+              env:
+                  PYTHONPATH: ${{ github.workspace }}
+
+            - name: Upload test artifacts
+              if: failure()
+              uses: actions/upload-artifact@v4
+              with:
+                  name: test-results-${{ matrix.os }}-py${{ matrix.python-version }}
+                  path: |
+                      *.log
+                      temp/
+                  if-no-files-found: ignore
+                  retention-days: 7
+
+    test-summary:
+        runs-on: ubuntu-latest
+        needs: test
+        if: always()
+        steps:
+            - name: Test Summary
+              run: |
+                  echo "## Test Results Summary" >> $GITHUB_STEP_SUMMARY
+                  echo "" >> $GITHUB_STEP_SUMMARY
+                  echo "All platform tests completed!" >> $GITHUB_STEP_SUMMARY

PyTaiko.py

@@ -5,7 +5,8 @@ import sqlite3
 import sys
 from pathlib import Path
 
-import pyray as ray
+import pyray
+import raylib as ray
 from pypresence.presence import Presence
 from raylib.defines import (
     RL_FUNC_ADD,
@@ -26,6 +27,8 @@ from libs.utils import (
     global_data,
     global_tex,
 )
+from scenes.ai_battle.game import AIBattleGameScreen
+from scenes.ai_battle.song_select import AISongSelectScreen
 from scenes.dan.dan_result import DanResultScreen
 from scenes.dan.dan_select import DanSelectScreen
 from scenes.dan.game_dan import DanGameScreen
@@ -67,6 +70,8 @@ class Screens:
     DAN_RESULT = "DAN_RESULT"
     PRACTICE_SELECT = "PRACTICE_SELECT"
     GAME_PRACTICE = "GAME_PRACTICE"
+    AI_SELECT = "AI_SELECT"
+    AI_GAME = "AI_GAME"
     SETTINGS = "SETTINGS"
     DEV_MENU = "DEV_MENU"
     LOADING = "LOADING"
@@ -161,12 +166,12 @@ def create_song_db():
 
 def update_camera_for_window_size(camera, virtual_width, virtual_height):
     """Update camera zoom, offset, scale, and rotation to maintain aspect ratio"""
-    screen_width = ray.get_screen_width()
-    screen_height = ray.get_screen_height()
+    screen_width = ray.GetScreenWidth()
+    screen_height = ray.GetScreenHeight()
 
     if screen_width == 0 or screen_height == 0:
         camera.zoom = 1.0
-        camera.offset = ray.Vector2(0, 0)
+        camera.offset = (0, 0)
         camera.rotation = 0.0
         return
 
@@ -186,21 +191,14 @@ def update_camera_for_window_size(camera, virtual_width, virtual_height):
     h_scale_offset_x = (virtual_width * scale * (h_scale - 1.0)) * 0.5
     v_scale_offset_y = (virtual_height * scale * (v_scale - 1.0)) * 0.5
 
-    camera.offset = ray.Vector2(
+    camera.offset = (
         base_offset_x - zoom_offset_x - h_scale_offset_x + (global_data.camera.offset.x * scale),
         base_offset_y - zoom_offset_y - v_scale_offset_y + (global_data.camera.offset.y * scale)
     )
 
     camera.rotation = global_data.camera.rotation
 
-def main():
-    force_dedicated_gpu()
-    global_data.config = get_config()
-    match global_data.config["general"]["score_method"]:
-        case ScoreMethod.GEN3:
-            global_data.score_db = 'scores_gen3.db'
-        case ScoreMethod.SHINUCHI:
-            global_data.score_db = 'scores.db'
+def setup_logging():
     log_level = global_data.config["general"]["log_level"]
     if sys.platform == 'win32':
         import io
@@ -219,41 +217,33 @@ def main():
         handlers=[console_handler, file_handler]
     )
     sys.excepthook = handle_exception
-    logger.info("Starting PyTaiko")
-
-    logger.debug(f"Loaded config: {global_data.config}")
-    screen_width = global_tex.screen_width
-    screen_height = global_tex.screen_height
 
+def set_config_flags():
     if global_data.config["video"]["vsync"]:
-        ray.set_config_flags(ray.ConfigFlags.FLAG_VSYNC_HINT)
+        ray.SetConfigFlags(ray.FLAG_VSYNC_HINT)
         logger.info("VSync enabled")
     if global_data.config["video"]["target_fps"] != -1:
-        ray.set_target_fps(global_data.config["video"]["target_fps"])
+        ray.SetTargetFPS(global_data.config["video"]["target_fps"])
         logger.info(f"Target FPS set to {global_data.config['video']['target_fps']}")
-    ray.set_config_flags(ray.ConfigFlags.FLAG_MSAA_4X_HINT)
-    ray.set_config_flags(ray.ConfigFlags.FLAG_WINDOW_RESIZABLE)
-    ray.set_trace_log_level(ray.TraceLogLevel.LOG_WARNING)
+    ray.SetConfigFlags(ray.FLAG_MSAA_4X_HINT)
+    ray.SetConfigFlags(ray.FLAG_WINDOW_RESIZABLE)
+    ray.SetTraceLogLevel(ray.LOG_WARNING)
 
-    ray.init_window(screen_width, screen_height, "PyTaiko")
-    logger.info(f"Window initialized: {screen_width}x{screen_height}")
-    global_tex.load_screen_textures('global')
-    logger.info("Global screen textures loaded")
-    global_tex.load_zip('chara', 'chara_0')
-    global_tex.load_zip('chara', 'chara_1')
-    logger.info("Chara textures loaded")
-    if global_data.config["video"]["borderless"]:
-        ray.toggle_borderless_windowed()
-        logger.info("Borderless window enabled")
-    if global_data.config["video"]["fullscreen"]:
-        ray.toggle_fullscreen()
-        logger.info("Fullscreen enabled")
-
-    current_screen = Screens.LOADING
+def init_audio():
+    audio.set_log_level((logger.level-1)//10)
+    old_stderr = os.dup(2)
+    devnull = os.open(os.devnull, os.O_WRONLY)
+    os.dup2(devnull, 2)
+    os.close(devnull)
+    audio.init_audio_device()
+    os.dup2(old_stderr, 2)
+    os.close(old_stderr)
+    logger.info("Audio device initialized")
 
+def check_args():
     if len(sys.argv) == 1:
-        pass
-    else:
+        return Screens.LOADING
+
     parser = argparse.ArgumentParser(description='Launch game with specified song file')
     parser.add_argument('song_path', type=str, help='Path to the TJA song file')
     parser.add_argument('difficulty', type=int, nargs='?', default=None,
@@ -279,19 +269,74 @@ def main():
         global_data.session_data[PlayerNum.P1].selected_song = path
         global_data.session_data[PlayerNum.P1].selected_difficulty = selected_difficulty
         global_data.modifiers[PlayerNum.P1].auto = args.auto
+        return current_screen
+
+def check_discord_heartbeat(current_screen):
+    if global_data.session_data[global_data.player_num].selected_song != Path():
+        details = f"Playing Song: {global_data.session_data[global_data.player_num].song_title}"
+    else:
+        details = "Idling"
+    RPC.update(
+        state=f"In Screen {current_screen}",
+        details=details,
+        large_text="PyTaiko",
+        start=get_current_ms()/1000,
+        buttons=[{"label": "Play Now", "url": "https://github.com/Yonokid/PyTaiko"}]
+    )
+
+def draw_fps(last_fps: int):
+    curr_fps = ray.GetFPS()
+    if curr_fps != 0 and curr_fps != last_fps:
+        last_fps = curr_fps
+    if last_fps < 30:
+        ray.DrawText(f'{last_fps} FPS'.encode('utf-8'), 20, 20, 20, ray.RED)
+    elif last_fps < 60:
+        ray.DrawText(f'{last_fps} FPS'.encode('utf-8'), 20, 20, 20, ray.YELLOW)
+    else:
+        ray.DrawText(f'{last_fps} FPS'.encode('utf-8'), 20, 20, 20, ray.LIME)
+
+def draw_outer_border(screen_width: int, screen_height: int, last_color: pyray.Color):
+    pyray.draw_rectangle(-screen_width, 0, screen_width, screen_height, last_color)
+    pyray.draw_rectangle(screen_width, 0, screen_width, screen_height, last_color)
+    pyray.draw_rectangle(0, -screen_height, screen_width, screen_height, last_color)
+    pyray.draw_rectangle(0, screen_height, screen_width, screen_height, last_color)
+
+def main():
+    force_dedicated_gpu()
+
+    global_data.config = get_config()
+    match global_data.config["general"]["score_method"]:
+        case ScoreMethod.GEN3:
+            global_data.score_db = 'scores_gen3.db'
+        case ScoreMethod.SHINUCHI:
+            global_data.score_db = 'scores.db'
+    setup_logging()
+    logger.info("Starting PyTaiko")
+    logger.debug(f"Loaded config: {global_data.config}")
+    screen_width = global_tex.screen_width
+    screen_height = global_tex.screen_height
+
+    set_config_flags()
+    ray.InitWindow(screen_width, screen_height, "PyTaiko".encode('utf-8'))
+
+    logger.info(f"Window initialized: {screen_width}x{screen_height}")
+    global_tex.load_screen_textures('global')
+    global_tex.load_zip('chara', 'chara_0')
+    global_tex.load_zip('chara', 'chara_1')
+    global_tex.load_zip('chara', 'chara_4')
+    if global_data.config["video"]["borderless"]:
+        ray.ToggleBorderlessWindowed()
+        logger.info("Borderless window enabled")
+    if global_data.config["video"]["fullscreen"]:
+        ray.ToggleFullscreen()
+        logger.info("Fullscreen enabled")
+
+    init_audio()
+
+    current_screen = check_args()
 
     logger.info(f"Initial screen: {current_screen}")
 
-    audio.set_log_level((log_level-1)//10)
-    old_stderr = os.dup(2)
-    devnull = os.open(os.devnull, os.O_WRONLY)
-    os.dup2(devnull, 2)
-    os.close(devnull)
-    audio.init_audio_device()
-    os.dup2(old_stderr, 2)
-    os.close(old_stderr)
-    logger.info("Audio device initialized")
-
     create_song_db()
 
     title_screen = TitleScreen('title')
@@ -303,6 +348,8 @@ def main():
     game_screen_2p = TwoPlayerGameScreen('game')
     game_screen_practice = PracticeGameScreen('game')
     practice_select_screen = PracticeSongSelectScreen('song_select')
+    ai_select_screen = AISongSelectScreen('song_select')
+    ai_game_screen = AIBattleGameScreen('game')
     result_screen = ResultScreen('result')
     result_screen_2p = TwoPlayerResultScreen('result')
     settings_screen = SettingsScreen('settings')
@@ -320,6 +367,8 @@ def main():
         Screens.GAME: game_screen,
         Screens.GAME_2P: game_screen_2p,
         Screens.GAME_PRACTICE: game_screen_practice,
+        Screens.AI_SELECT: ai_select_screen,
+        Screens.AI_GAME: ai_game_screen,
         Screens.RESULT: result_screen,
         Screens.RESULT_2P: result_screen_2p,
         Screens.SETTINGS: settings_screen,
@@ -330,51 +379,41 @@ def main():
         Screens.LOADING: load_screen
     }
 
-    camera = ray.Camera2D()
-    camera.target = ray.Vector2(0, 0)
+    camera = pyray.Camera2D()
+    camera.target = pyray.Vector2(0, 0)
     camera.rotation = 0.0
     update_camera_for_window_size(camera, screen_width, screen_height)
     logger.info("Camera2D initialized")
 
-    ray.rl_set_blend_factors_separate(RL_SRC_ALPHA, RL_ONE_MINUS_SRC_ALPHA, RL_ONE, RL_ONE_MINUS_SRC_ALPHA, RL_FUNC_ADD, RL_FUNC_ADD)
-    ray.set_exit_key(global_data.config["keys"]["exit_key"])
+    ray.rlSetBlendFactorsSeparate(RL_SRC_ALPHA, RL_ONE_MINUS_SRC_ALPHA, RL_ONE, RL_ONE_MINUS_SRC_ALPHA, RL_FUNC_ADD, RL_FUNC_ADD)
+    ray.SetExitKey(global_data.config["keys"]["exit_key"])
 
-    ray.hide_cursor()
+    ray.HideCursor()
     logger.info("Cursor hidden")
     last_fps = 1
-    last_color = ray.BLACK
+    last_color = pyray.BLACK
 
-    while not ray.window_should_close():
+    while not ray.WindowShouldClose():
         if discord_connected:
-            if global_data.session_data[global_data.player_num].selected_song != Path():
-                details = f"Playing Song: {global_data.session_data[global_data.player_num].song_title}"
-            else:
-                details = "Idling"
-            RPC.update(
-                state=f"In Screen {current_screen}",
-                details=details,
-                large_text="PyTaiko",
-                start=get_current_ms()/1000,
-                buttons=[{"label": "Play Now", "url": "https://github.com/Yonokid/PyTaiko"}]
-            )
+            check_discord_heartbeat(current_screen)
 
-        if ray.is_key_pressed(global_data.config["keys"]["fullscreen_key"]):
-            ray.toggle_fullscreen()
+        if ray.IsKeyPressed(global_data.config["keys"]["fullscreen_key"]):
+            ray.ToggleFullscreen()
             logger.info("Toggled fullscreen")
-        elif ray.is_key_pressed(global_data.config["keys"]["borderless_key"]):
-            ray.toggle_borderless_windowed()
+        elif ray.IsKeyPressed(global_data.config["keys"]["borderless_key"]):
+            ray.ToggleBorderlessWindowed()
             logger.info("Toggled borderless windowed mode")
 
         update_camera_for_window_size(camera, screen_width, screen_height)
 
-        ray.begin_drawing()
+        ray.BeginDrawing()
 
         if global_data.camera.border_color != last_color:
-            ray.clear_background(global_data.camera.border_color)
+            pyray.clear_background(global_data.camera.border_color)
             last_color = global_data.camera.border_color
 
-        ray.begin_mode_2d(camera)
-        ray.begin_blend_mode(ray.BlendMode.BLEND_CUSTOM_SEPARATE)
+        pyray.begin_mode_2d(camera)
+        ray.BeginBlendMode(ray.BLEND_CUSTOM_SEPARATE)
 
         screen = screen_mapping[current_screen]
 
@@ -388,26 +427,15 @@ def main():
             global_data.input_locked = 0
 
         if global_data.config["general"]["fps_counter"]:
-            curr_fps = ray.get_fps()
-            if curr_fps != 0 and curr_fps != last_fps:
-                last_fps = curr_fps
-            if last_fps < 30:
-                ray.draw_text(f'{last_fps} FPS', 20, 20, 20, ray.RED)
-            elif last_fps < 60:
-                ray.draw_text(f'{last_fps} FPS', 20, 20, 20, ray.YELLOW)
-            else:
-                ray.draw_text(f'{last_fps} FPS', 20, 20, 20, ray.LIME)
+            draw_fps(last_fps)
 
-        ray.draw_rectangle(-screen_width, 0, screen_width, screen_height, last_color)
-        ray.draw_rectangle(screen_width, 0, screen_width, screen_height, last_color)
-        ray.draw_rectangle(0, -screen_height, screen_width, screen_height, last_color)
-        ray.draw_rectangle(0, screen_height, screen_width, screen_height, last_color)
+        draw_outer_border(screen_width, screen_height, last_color)
 
-        ray.end_blend_mode()
-        ray.end_mode_2d()
-        ray.end_drawing()
+        ray.EndBlendMode()
+        ray.EndMode2D()
+        ray.EndDrawing()
 
-    ray.close_window()
+    ray.CloseWindow()
     audio.close_audio_device()
     if discord_connected:
         RPC.close()

README.md

@@ -4,10 +4,10 @@ A TJA player and Taiko simulator written in Python using the [raylib](https://ww
 
 ![License](https://img.shields.io/github/license/Yonokid/PyTaiko)
 ![Platform](https://img.shields.io/badge/platform-Windows%20%7C%20macOS%20%7C%20Linux-blue)
-[![GitHub Releases Downloads](https://img.shields.io/github/downloads/Yonokid/PyTaiko/total)](https://github.com/Yonokid/PyTaiko/releases)
 [![GitHub Stars](https://img.shields.io/github/stars/Yonokid/PyTaiko?style=flat&label=stars)](https://github.com/Yonokid/PyTaiko/stargazers)
 [![Discord Members](https://img.shields.io/discord/722513061419810946.svg?label=Discord&logo=discord)](https://discord.gg/XHcVYKW)
 [![Builds](https://github.com/Yonokid/PyTaiko/actions/workflows/python-app.yml/badge.svg)](https://github.com/Yonokid/PyTaiko/actions/workflows/python-app.yml)
+[![Tests](https://github.com/Yonokid/PyTaiko/actions/workflows/tests.yml/badge.svg)](https://github.com/Yonokid/PyTaiko/actions/workflows/tests.yml)
 
 <img src="/docs/demo.gif">
 
@@ -47,18 +47,30 @@ Just make sure to use `/` and not `\`!<br>
 Q: I'm trying to play on Mac and it can't open!<br>
 A: Delete your installation and follow these commands in the terminal:<br>
 ```
-/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
-curl -LsSf https://astral.sh/uv/install.sh | sh
-source $HOME/.local/bin/env
+# Move to the place where you want to download Pytaiko, this example will be in the desktop
+# Make sure the directory is not saved in iCloud! This will create an issue on macOS where the executable cannot compile.
+cd ~/Desktop
+
+# Installing dependencies
+brew install python@3.12 uv git speexdsp libsndfile
+
+# Downloading Pytaiko project
 git clone https://github.com/Yonokid/PyTaiko
 cd PyTaiko
-brew install libsndfile
-brew install speexdsp
+
+# Compiling audio libraries
 cd libs/audio
 make
-mv libaudio.dylib ../../
-cd ../../
+mv libaudio.dylib ...
+cd ...
+
+# Running game (for testing)
 uv run PyTaiko.py
+
+# Creating executable
+
+uv add nuitka
+uv run nuitka --mode=app --noinclude-setuptools-mode=nofollow --noinclude-IPython-mode=nofollow --assume-yes-for-downloads PyTaiko.py
 ```
 ## Installation
 
@@ -71,7 +83,7 @@ Download the latest release for your operating system from the [releases page](h
 2. Run `PyTaiko.exe`
 
 #### macOS
-- Run with Python directly (see [Building from Source](#building-from-source))
+- Run with Python directly or self compile (see [Building from Source](#building-from-source))
 
 #### Linux
 - Try running the compiled `PyTaiko.bin` binary

Songs/18 Search/box.def

@@ -0,0 +1,4 @@
+#TITLE:Search Song
+#TITLEJA:曲検索
+#COLLECTION:SEARCH
+#BACKCOLOR:#800000

libs/__init__.py

@@ -0,0 +1,41 @@
+"""
+PyTaiko Libraries Package
+
+This package contains core libraries for PyTaiko.
+
+Modules:
+    animation: Animation system for game objects
+    audio: Audio engine for sound and music playback
+    background: Background rendering system
+    chara_2d: 2D character animation system
+    config: Configuration management
+    file_navigator: File and song navigation UI
+    global_data: Global data structures and enums
+    global_objects: Global UI objects (nameplate, timer, etc.)
+    screen: Base screen class for game states
+    song_hash: Song hashing and database management
+    texture: Texture loading and management
+    tja: TJA chart file parser
+    transition: Screen transition effects
+    utils: Utility functions and helpers
+    video: Video playback system
+"""
+
+__version__ = "1.1"
+__all__ = [
+    "animation",
+    "audio",
+    "background",
+    "chara_2d",
+    "config",
+    "file_navigator",
+    "global_data",
+    "global_objects",
+    "screen",
+    "song_hash",
+    "texture",
+    "tja",
+    "transition",
+    "utils",
+    "video",
+]

libs/audio.py

@@ -119,7 +119,8 @@ except OSError as e:
 
 class AudioEngine:
     """Initialize an audio engine for playing sounds and music."""
-    def __init__(self, device_type: int, sample_rate: float, buffer_size: int, volume_presets: VolumeConfig):
+    def __init__(self, device_type: int, sample_rate: float, buffer_size: int,
+                 volume_presets: VolumeConfig, sounds_path: Path | None = None):
         self.device_type = max(device_type, 0)
         if sample_rate < 0:
             self.target_sample_rate = 44100
@@ -131,7 +132,10 @@ class AudioEngine:
         self.audio_device_ready = False
         self.volume_presets = volume_presets
 
-        self.sounds_path = Path(f"Skins/{get_config()["paths"]["skin"]}/Sounds")
+        if sounds_path is None:
+            self.sounds_path = Path(f"Skins/{get_config()['paths']['skin']}/Sounds")
+        else:
+            self.sounds_path = sounds_path
 
     def set_log_level(self, level: int):
         lib.set_log_level(level) # type: ignore

libs/background.py

@@ -130,10 +130,17 @@ class Background:
                 current_milestone = min(self.max_dancers - 1, int(gauge_1p.gauge_length / (clear_threshold / self.max_dancers)))
             else:
                 current_milestone = self.max_dancers
+
             if current_milestone > self.last_milestone and current_milestone <= self.max_dancers:
                 self.dancer.add_dancer()
                 self.last_milestone = current_milestone
                 logger.info(f"Dancer milestone reached: {current_milestone}/{self.max_dancers}")
+            elif current_milestone < self.last_milestone:
+                dancers_to_remove = self.last_milestone - current_milestone
+                for _ in range(dancers_to_remove):
+                    self.dancer.remove_dancer()
+                self.last_milestone = current_milestone
+                logger.info(f"Dancer milestones lost: {current_milestone}/{self.max_dancers} (removed {dancers_to_remove})")
         if self.bg_fever is not None and gauge_1p is not None:
             if not self.is_clear and gauge_1p.is_clear:
                 self.bg_fever.start()

libs/bg_objects/dancer.py

@@ -162,6 +162,12 @@ class BaseDancerGroup():
             dancer.start()
             self.active_count += 1
 
+    def remove_dancer(self):
+        if self.active_count > 1:
+            self.active_count -= 1
+            position = self.spawn_positions[self.active_count]
+            self.active_dancers[position] = None
+
     def update(self, current_time_ms: float, bpm: float):
         for dancer in self.dancers:
             dancer.update(current_time_ms, bpm)

libs/chara_2d.py

@@ -107,7 +107,7 @@ class Chara2D:
                 self.current_anim = self.past_anim
             self.anims[self.current_anim].restart()
 
-    def draw(self, x: float = 0, y: float = 0, mirror=False):
+    def draw(self, x: float = 0, y: float = 0, mirror=False, scale=1.0):
         """
         Draw the character on the screen.
 
@@ -117,9 +117,9 @@ class Chara2D:
             mirror (bool): Whether to mirror the character horizontally.
         """
         if self.is_rainbow and self.current_anim not in {'soul_in', 'balloon_pop', 'balloon_popping'}:
-            self.tex.draw_texture(self.name, self.current_anim + '_max', frame=self.anims[self.current_anim].attribute, x=x, y=y)
+            self.tex.draw_texture(self.name, self.current_anim + '_max', frame=self.anims[self.current_anim].attribute, x=x, y=y, scale=scale)
         else:
             if mirror:
-                self.tex.draw_texture(self.name, self.current_anim, frame=self.anims[self.current_anim].attribute, x=x, y=y, mirror='horizontal')
+                self.tex.draw_texture(self.name, self.current_anim, frame=self.anims[self.current_anim].attribute, x=x, y=y, mirror='horizontal', scale=scale)
             else:
-                self.tex.draw_texture(self.name, self.current_anim, frame=self.anims[self.current_anim].attribute, x=x, y=y)
+                self.tex.draw_texture(self.name, self.current_anim, frame=self.anims[self.current_anim].attribute, x=x, y=y, scale=scale)

libs/file_navigator.py

@@ -1038,7 +1038,8 @@ class Directory(FileSystemItem):
         'RECENT',
         'FAVORITE',
         'DIFFICULTY',
-        'RECOMMENDED'
+        'RECOMMENDED',
+        'SEARCH'
     ]
     def __init__(self, path: Path, name: str, back_color: Optional[tuple[int, int, int]], fore_color: Optional[tuple[int, int, int]], texture_index: TextureIndex, genre_index: GenreIndex, has_box_def=False, to_root=False, back=False, tja_count=0, box_texture=None, collection=None):
         super().__init__(path, name)
@@ -1143,6 +1144,7 @@ class FileNavigator:
         self.genre_bg = None
         self.song_count = 0
         self.in_dan_select = False
+        self.current_search = ''
         logger.info("FileNavigator initialized")
 
     def initialize(self, root_dirs: list[Path]):
@@ -1392,6 +1394,42 @@ class FileNavigator:
                             temp_items.append(item)
         return random.sample(temp_items, min(10, len(temp_items)))
 
+    def _levenshtein_distance(self, s1: str, s2: str):
+        # Create a matrix to store distances
+        m, n = len(s1), len(s2)
+        dp = [[0] * (n + 1) for _ in range(m + 1)]
+
+        # Initialize base cases
+        for i in range(m + 1):
+            dp[i][0] = i
+        for j in range(n + 1):
+            dp[0][j] = j
+
+        # Fill the matrix
+        for i in range(1, m + 1):
+            for j in range(1, n + 1):
+                if s1[i-1] == s2[j-1]:
+                    dp[i][j] = dp[i-1][j-1]  # No operation needed
+                else:
+                    dp[i][j] = 1 + min(
+                        dp[i-1][j],      # Deletion
+                        dp[i][j-1],      # Insertion
+                        dp[i-1][j-1]     # Substitution
+                    )
+
+        return dp[m][n]
+
+    def search_song(self, search_name: str):
+        items = []
+        for path, song in self.all_song_files.items():
+            if self._levenshtein_distance(song.name[:-4].lower(), search_name.lower()) < 2:
+                items.append(song)
+            if isinstance(song, SongFile):
+                if self._levenshtein_distance(song.tja.metadata.subtitle["en"].lower(), search_name.lower()) < 2:
+                    items.append(song)
+
+        return items
+
     def load_current_directory(self, selected_item: Optional[Directory] = None):
         """Load pre-generated items for the current directory (unified for root and subdirs)"""
         dir_key = str(self.current_dir)
@@ -1438,6 +1476,8 @@ class FileNavigator:
                     content_items = self.load_diff_sort_items(selected_item, dir_key)
                 elif selected_item.collection == Directory.COLLECTIONS[4]:
                     content_items = self.load_recommended_items(selected_item, dir_key)
+                elif selected_item.collection == Directory.COLLECTIONS[5]:
+                    content_items = self.search_song(self.current_search)
 
             if content_items == []:
                 self.go_back()

libs/global_data.py

@@ -14,6 +14,7 @@ class PlayerNum(IntEnum):
     P2 = 2
     TWO_PLAYER = 3
     DAN = 4
+    AI = 5
 
 class ScoreMethod():
     GEN3 = "gen3"
@@ -44,6 +45,7 @@ class Modifiers:
     display: bool = False
     inverse: bool = False
     random: int = 0
+    subdiff: int = 0
 
 @dataclass
 class DanResultSong:

libs/global_objects.py

@@ -58,6 +58,9 @@ class Nameplate:
         """
         tex = global_tex
         tex.draw_texture('nameplate', 'shadow', x=x, y=y, fade=min(0.5, fade))
+        if self.player_num == PlayerNum.AI:
+            tex.draw_texture('nameplate', 'ai', x=x, y=y)
+            return
         if self.player_num == 0:
             frame = 2
             title_offset = 0

libs/texture.py

@@ -72,6 +72,13 @@ class TextureWrapper:
         self.animations: dict[int, BaseAnimation] = dict()
         self.skin_config: dict[str, SkinInfo] = dict()
         self.graphics_path = Path(f'Skins/{get_config()['paths']['skin']}/Graphics')
+        if not self.graphics_path.exists():
+            logger.error("No skin has been configured")
+            self.screen_width = 1280
+            self.screen_height = 720
+            self.screen_scale = 1.0
+            self.skin_config = dict()
+            return
         self.parent_graphics_path = Path(f'Skins/{get_config()['paths']['skin']}/Graphics')
         if not (self.graphics_path / "skin_config.json").exists():
             raise Exception("skin is missing a skin_config.json")
@@ -290,7 +297,7 @@ class TextureWrapper:
         else:
             ray.DrawTexturePro(tex_object.texture, source_rect, dest_rect, origin, rotation, final_color)
         if tex_object.controllable[index] or controllable:
-            self.control(tex_object)
+            self.control(tex_object, index)
 
     def draw_texture(self, subset: str, texture: str, color: Color = Color(255, 255, 255, 255), frame: int = 0, scale: float = 1.0, center: bool = False,
                             mirror: str = '', x: float = 0, y: float = 0, x2: float = 0, y2: float = 0,

libs/tja.py

@@ -1148,7 +1148,6 @@ def modifier_inverse(notes: NoteList):
 def modifier_random(notes: NoteList, value: int):
     """Randomly modifies the type of the notes in the given NoteList.
     value: 1 == kimagure, 2 == detarame"""
-    #value: 1 == kimagure, 2 == detarame
     modded_notes = notes.play_notes.copy()
     percentage = int(len(modded_notes) / 5) * value
     selected_notes = random.sample(range(len(modded_notes)), percentage)
@@ -1166,4 +1165,393 @@ def apply_modifiers(notes: NoteList, modifiers: Modifiers):
         play_notes = modifier_inverse(notes)
     play_notes = modifier_random(notes, modifiers.random)
     draw_notes, bars = modifier_speed(notes, modifiers.speed)
-    return deque(play_notes), deque(draw_notes), deque(bars)
+    play_notes = modifier_difficulty(notes, modifiers.subdiff)
+    draw_notes = modifier_difficulty(notes, modifiers.subdiff)
+    return play_notes, draw_notes, bars
+
+class Interval(IntEnum):
+    UNKNOWN = 0
+    QUARTER = 1
+    EIGHTH = 2
+    TWELFTH = 3
+    SIXTEENTH = 4
+    TWENTYFOURTH = 6
+    THIRTYSECOND = 8
+
+def modifier_difficulty(notes: NoteList, level: int):
+    """Modifies notes based on difficulty level according to the difficulty table.
+
+    Args:
+        notes: The NoteList to modify
+        level: The numerical difficulty level (1-13)
+
+    Returns:
+        Modified list of notes
+    """
+    # Levels with no changes: Easy (1), Normal (2-5), Hard (9), Oni (13)
+    if level in [0, 1, 2, 3, 4, 5, 9, 13]:
+        return notes.play_notes
+
+    modded_notes = notes.play_notes.copy()
+
+    # Helper function to calculate note interval category
+    def get_note_interval_type(interval_ms: float, bpm: float, time_sig: float = 4.0) -> Interval:
+        """Classify note interval as 1/8, 1/16, 1/12, or 1/24 note."""
+        if bpm == 0:
+            return Interval.UNKNOWN
+
+        ms_per_measure = get_ms_per_measure(bpm, time_sig) / time_sig
+        tolerance = 15  # ms tolerance for timing classification
+
+        eighth_note = ms_per_measure / 8
+        sixteenth_note = ms_per_measure / 16
+        twelfth_note = ms_per_measure / 12
+        twentyfourth_note = ms_per_measure / 24
+        thirtysecond_note = ms_per_measure / 32
+        quarter_note = ms_per_measure / 4
+
+        if abs(interval_ms - eighth_note) < tolerance:
+            return Interval.EIGHTH
+        elif abs(interval_ms - sixteenth_note) < tolerance:
+            return Interval.SIXTEENTH
+        elif abs(interval_ms - twelfth_note) < tolerance:
+            return Interval.TWELFTH
+        elif abs(interval_ms - twentyfourth_note) < tolerance:
+            return Interval.TWENTYFOURTH
+        elif abs(interval_ms - thirtysecond_note) < tolerance:
+            return Interval.THIRTYSECOND
+        elif abs(interval_ms - quarter_note) < tolerance:
+            return Interval.QUARTER
+        return Interval.UNKNOWN
+
+    # Helper function to make notes single-color
+    def make_single_color(note_indices: list[int]):
+        """Convert notes to single color (auto-detects majority color if not specified)."""
+        don_count = 0
+        kat_count = 0
+
+        for idx in note_indices:
+            if idx < len(modded_notes):
+                note_type = modded_notes[idx].type
+                if note_type in [NoteType.DON, NoteType.DON_L]:
+                    don_count += 1
+                elif note_type in [NoteType.KAT, NoteType.KAT_L]:
+                    kat_count += 1
+
+        # Use majority color, defaulting to DON if tied or no valid notes
+        color = NoteType.DON if don_count >= kat_count else NoteType.KAT
+
+        # Convert all notes to the determined color
+        for idx in note_indices:
+            if idx < len(modded_notes):
+                if modded_notes[idx].type in [NoteType.DON, NoteType.KAT]:
+                    modded_notes[idx].type = color
+                elif modded_notes[idx].type in [NoteType.DON_L, NoteType.KAT_L]:
+                    modded_notes[idx].type = NoteType.DON_L if color == NoteType.DON else NoteType.KAT_L
+
+    # Helper function to find note streams
+    def find_streams(interval_type: Interval) -> list[tuple[int, int]]:
+        """Find consecutive notes with the given interval type.
+        Returns list of (start_index, length) tuples."""
+        streams = []
+        i = 0
+        while i < len(modded_notes) - 1:
+            if isinstance(modded_notes[i], (Drumroll, Balloon)):
+                i += 1
+                continue
+
+            stream_start = i
+            stream_length = 1
+
+            while i < len(modded_notes) - 1:
+                if isinstance(modded_notes[i + 1], (Drumroll, Balloon)):
+                    break
+
+                interval = modded_notes[i + 1].hit_ms - modded_notes[i].hit_ms
+                note_type = get_note_interval_type(interval, modded_notes[i].bpm)
+
+                if note_type == interval_type:
+                    stream_length += 1
+                    i += 1
+                else:
+                    break
+
+            if stream_length >= 2:  # At least 2 notes to form a stream
+                streams.append((stream_start, stream_length))
+
+            i += 1
+
+        return streams
+
+    def find_2plus2_patterns(interval_type: Interval) -> list[int]:
+        """Find 2+2 patterns with the given interval type.
+        A 2+2 pattern consists of:
+        - 2 notes with the specified interval between them
+        - A gap (size of the interval)
+        - 2 more notes with the specified interval between them
+        - A gap after (at least the size of the interval)
+
+        Returns list of starting indices for 2+2 patterns."""
+        patterns = []
+        i = 0
+
+        while i < len(modded_notes) - 3:
+            if isinstance(modded_notes[i], (Drumroll, Balloon)):
+                i += 1
+                continue
+
+            # Check if we have at least 4 notes ahead
+            valid_notes_ahead = 0
+            for j in range(i, min(i + 4, len(modded_notes))):
+                if not isinstance(modded_notes[j], (Drumroll, Balloon)):
+                    valid_notes_ahead += 1
+
+            if valid_notes_ahead < 4:
+                i += 1
+                continue
+
+            # Get the next 3 valid note indices (total 4 notes including current)
+            note_indices = [i]
+            j = i + 1
+            while len(note_indices) < 4 and j < len(modded_notes):
+                if not isinstance(modded_notes[j], (Drumroll, Balloon)):
+                    note_indices.append(j)
+                j += 1
+
+            if len(note_indices) < 4:
+                i += 1
+                continue
+
+            # Check intervals between the 4 notes
+            interval1 = modded_notes[note_indices[1]].hit_ms - modded_notes[note_indices[0]].hit_ms
+            interval2 = modded_notes[note_indices[2]].hit_ms - modded_notes[note_indices[1]].hit_ms
+            interval3 = modded_notes[note_indices[3]].hit_ms - modded_notes[note_indices[2]].hit_ms
+
+            type1 = get_note_interval_type(interval1, modded_notes[note_indices[0]].bpm)
+            type3 = get_note_interval_type(interval3, modded_notes[note_indices[2]].bpm)
+
+            # Check for 2+2 pattern:
+            # - First interval matches our target type (between notes 0 and 1)
+            # - Second interval is ~2x the target type (the gap, between notes 1 and 2)
+            # - Third interval matches our target type (between notes 2 and 3)
+            # - After the last note, there should be a gap (check next note)
+            if type1 == interval_type and type3 == interval_type:
+                # Check if middle interval is approximately 2x the note interval (represents the gap)
+                ms_per_measure = get_ms_per_measure(modded_notes[note_indices[0]].bpm, 4.0) / 4.0
+                target_interval = 0
+                if interval_type == Interval.SIXTEENTH:
+                    target_interval = ms_per_measure / 16
+                elif interval_type == Interval.EIGHTH:
+                    target_interval = ms_per_measure / 8
+                elif interval_type == Interval.TWELFTH:
+                    target_interval = ms_per_measure / 12
+                elif interval_type == Interval.TWENTYFOURTH:
+                    target_interval = ms_per_measure / 24
+
+                # The gap should be approximately 2x the note interval (with tolerance)
+                expected_gap = target_interval * 2
+                tolerance = 20  # ms tolerance for gap detection
+
+                if abs(interval2 - expected_gap) < tolerance:
+                    # Check if there's a gap after the 4th note
+                    if note_indices[3] + 1 < len(modded_notes):
+                        if not isinstance(modded_notes[note_indices[3] + 1], (Drumroll, Balloon)):
+                            interval_after = modded_notes[note_indices[3] + 1].hit_ms - modded_notes[note_indices[3]].hit_ms
+                            type_after = get_note_interval_type(interval_after, modded_notes[note_indices[3]].bpm)
+                            # Gap after should be at least the size of the interval
+                            if interval_after >= target_interval * 1.5 or type_after != interval_type:
+                                patterns.append(i)
+                    else:
+                        # End of notes, so pattern is valid
+                        patterns.append(i)
+
+            i += 1
+
+        return patterns
+
+    # Level 6 (Hard): 1/8 note streams become single-color; 1/8 note triplets become 1/4 notes
+    if level == 6:
+        streams = find_streams(Interval.EIGHTH)
+        for start, length in streams:
+            if length == 3:
+                modded_notes[start + 1].type = NoteType.NONE
+            elif length > 3:
+                make_single_color(list(range(start, start + length)))
+
+    # Level 7 (Hard): 1/8 note 5-hit streams become 3-1 pattern; 7+ hits repeat 3-1-1 pattern
+    elif level == 7:
+        streams = find_streams(Interval.EIGHTH)
+        for start, length in streams:
+            if length == 5:
+                modded_notes[start + 3].type = NoteType.NONE
+            elif length >= 7:
+                idx = start
+                while idx < start + length:
+                    idx += 3
+                    if idx < start + length and idx < len(modded_notes):
+                        modded_notes[idx].type = NoteType.NONE
+                        idx += 1
+
+    # Level 8 (Hard): 1/16 note triplets become 1/8 notes; 1/16 note 5-hit streams become 3+1 or 2+2
+    elif level == 8:
+        streams = find_streams(Interval.SIXTEENTH)
+        for start, length in streams:
+            if length == 3:
+                modded_notes[start + 1].type = NoteType.NONE
+            elif length == 5:
+                #3+1 if start with don, 2+2 if start with kat
+                if modded_notes[start].type in [NoteType.DON, NoteType.DON_L]:
+                    modded_notes[start + 3].type = NoteType.NONE
+                else:
+                    modded_notes[start + 2].type = NoteType.NONE
+
+    # Level 10 (Oni):
+    # 1/16 note 5-hit streams become 3+1
+    # 1/16 note doubles become single-color
+    # 2+2 hits become 2+1 hits (annoying)
+    # 1/16 4+ hits become 8th doubles
+    # 1/24ths are removed
+    # 1/16th streams become triplet followed by interval below
+    elif level == 10:
+        streams = find_streams(Interval.THIRTYSECOND)
+        for start, length in streams:
+            idx = start + 1
+            while idx < start + length:
+                if idx < start + length and idx < len(modded_notes):
+                    modded_notes[idx].type = NoteType.NONE
+                    idx += 2
+
+        streams = find_streams(Interval.TWENTYFOURTH)
+        for start, length in streams:
+            idx = start + 1
+            while idx < start + length - 1:
+                if idx < len(modded_notes) and idx + 1 < len(modded_notes):
+                    modded_notes[idx].type = NoteType.NONE
+                    modded_notes[idx + 1].type = NoteType.NONE
+                idx += 3
+        streams = find_streams(Interval.SIXTEENTH)
+        for start, length in streams:
+            if length == 2:
+                modded_notes[start].type = modded_notes[start + 1].type
+            if length == 3:
+                modded_notes[start + 1].type = NoteType.NONE
+            if length == 4 or length == 5:
+                modded_notes[start + 3].type = NoteType.NONE
+                make_single_color(list(range(start, start + length)))
+            elif length > 5:
+                modded_notes[start + 3].type = NoteType.NONE
+                idx = start + 5
+                while idx < start + length:
+                    if idx < start + length and idx < len(modded_notes):
+                        modded_notes[idx].type = NoteType.NONE
+                        idx += 2
+
+        streams_2_2 = find_2plus2_patterns(Interval.SIXTEENTH)
+        for index in streams_2_2:
+            modded_notes[index + 2].type = NoteType.NONE
+
+    # Level 11 (Oni):
+    # Level 10 variation
+    elif level == 11:
+        streams = find_streams(Interval.THIRTYSECOND)
+        for start, length in streams:
+            idx = start + 1
+            while idx < start + length:
+                if idx < start + length and idx < len(modded_notes):
+                    modded_notes[idx].type = NoteType.NONE
+                    idx += 2
+
+        streams = find_streams(Interval.TWENTYFOURTH)
+        for start, length in streams:
+            idx = start + 1
+            while idx < start + length - 1:
+                if idx < len(modded_notes) and idx + 1 < len(modded_notes):
+                    modded_notes[idx].type = NoteType.NONE
+                    modded_notes[idx + 1].type = NoteType.NONE
+                idx += 3
+
+        streams = find_streams(Interval.TWELFTH)
+        for start, length in streams:
+            idx = start + 1
+            while idx < start + length - 1:
+                if idx < len(modded_notes) and idx + 1 < len(modded_notes):
+                    modded_notes[idx].type = NoteType.NONE
+                idx += 3
+
+        streams = find_streams(Interval.SIXTEENTH)
+        for start, length in streams:
+            if length == 2:
+                modded_notes[start].type = modded_notes[start + 1].type
+            if length == 3:
+                modded_notes[start + 1].type = NoteType.NONE
+            if length == 4 or length == 5:
+                modded_notes[start + 3].type = NoteType.NONE
+                make_single_color(list(range(start, start + length)))
+            elif length > 5:
+                idx = start
+                while idx < start + length:
+                    triplet_end = min(idx + 3, start + length)
+                    if triplet_end - idx >= 2:
+                        make_single_color(list(range(idx, triplet_end)))
+                    idx += 3
+                    if idx < start + length and idx < len(modded_notes):
+                        modded_notes[idx].type = NoteType.NONE
+                        idx += 2
+                    if idx < start + length and idx < len(modded_notes):
+                        modded_notes[idx].type = NoteType.NONE
+                        idx += 1
+    # Level 12 (Oni):
+    # Level 10 variation
+    elif level == 12:
+        streams = find_streams(Interval.THIRTYSECOND)
+        for start, length in streams:
+            idx = start + 1
+            while idx < start + length:
+                if idx < start + length and idx < len(modded_notes):
+                    modded_notes[idx].type = NoteType.NONE
+                    idx += 2
+
+        streams = find_streams(Interval.TWENTYFOURTH)
+        for start, length in streams:
+            idx = start + 1
+            while idx < start + length - 1:
+                if idx < len(modded_notes) and idx + 1 < len(modded_notes):
+                    modded_notes[idx].type = NoteType.NONE
+                    modded_notes[idx + 1].type = NoteType.NONE
+                idx += 3
+
+        streams = find_streams(Interval.TWELFTH)
+        for start, length in streams:
+            if length <= 4:
+                make_single_color(list(range(start, start + length)))
+            else:
+                idx = start + 1
+                while idx < start + length - 1:
+                    if idx < len(modded_notes) and idx + 1 < len(modded_notes):
+                        modded_notes[idx].type = NoteType.NONE
+                    idx += 3
+
+        streams = find_streams(Interval.SIXTEENTH)
+        for start, length in streams:
+            if length == 3:
+                make_single_color(list(range(start, start + length)))
+            if length == 4 or length == 5:
+                modded_notes[start + 3].type = NoteType.NONE
+                make_single_color(list(range(start, start + length)))
+            elif length > 5:
+                idx = start
+                while idx < start + length:
+                    triplet_end = min(idx + 3, start + length)
+                    if triplet_end - idx >= 2:
+                        make_single_color(list(range(idx, triplet_end)))
+                    idx += 3
+                    if idx < start + length and idx < len(modded_notes):
+                        modded_notes[idx].type = NoteType.NONE
+                        idx += 2
+                    if idx < start + length and idx < len(modded_notes):
+                        modded_notes[idx].type = NoteType.NONE
+                        idx += 1
+
+    filtered_notes = [note for note in modded_notes if note.type != NoteType.NONE]
+
+    return filtered_notes

pyproject.toml

@@ -6,11 +6,30 @@ readme = "README.md"
 requires-python = ">=3.13"
 dependencies = [
     "av>=16.0.1",
+    "pyinstrument>=5.1.1",
     "pypresence>=4.6.1",
+    "pytest>=9.0.2",
     "raylib-sdl>=5.5.0.2",
     "tomlkit>=0.13.3",
 ]
 
+[tool.pytest.ini_options]
+testpaths = ["test"]
+pythonpath = ["."]
+python_files = "test_*.py"
+python_classes = "Test*"
+python_functions = "test_*"
+addopts = [
+    "-v",
+    "--strict-markers",
+    "--tb=short",
+    "--color=yes",
+]
+markers = [
+    "slow: marks tests as slow (deselect with '-m \"not slow\"')",
+    "integration: marks tests as integration tests",
+]
+
 [tool.vulture]
 exclude = ["*.git", ".github/", ".venv/", "cache/"]
 paths = ["."]
@@ -18,4 +37,5 @@ paths = ["."]
 [dependency-groups]
 dev = [
     "nuitka>=2.8.4",
+    "pytest-cov>=6.0.0",
 ]

scenes/ai_battle/game.py

@@ -0,0 +1,470 @@
+import copy
+import logging
+import random
+from pathlib import Path
+from typing import Optional
+
+import pyray as ray
+
+from libs.animation import Animation
+from libs.audio import audio
+from libs.background import Background
+from libs.chara_2d import Chara2D
+from libs.global_data import Difficulty, Modifiers, PlayerNum, global_data
+from libs.global_objects import Nameplate
+from libs.texture import tex
+from libs.tja import TJAParser
+from libs.utils import get_current_ms, global_tex
+from scenes.game import (
+    DrumType,
+    GameScreen,
+    Gauge,
+    Player,
+    Side,
+    SongInfo,
+)
+
+logger = logging.getLogger(__name__)
+
+class AIBattleGameScreen(GameScreen):
+    def on_screen_start(self):
+        super().on_screen_start()
+        session_data = global_data.session_data[global_data.player_num]
+        self.song_info = SongInfoAI(session_data.song_title, session_data.genre_index)
+        self.background = AIBackground(session_data.selected_difficulty)
+
+    def global_keys(self):
+        if ray.is_key_pressed(global_data.config["keys"]["restart_key"]):
+            if self.song_music is not None:
+                audio.stop_music_stream(self.song_music)
+            self.init_tja(global_data.session_data[global_data.player_num].selected_song)
+            audio.play_sound('restart', 'sound')
+            self.song_started = False
+
+        if ray.is_key_pressed(global_data.config["keys"]["back_key"]):
+            if self.song_music is not None:
+                audio.stop_music_stream(self.song_music)
+            return self.on_screen_end('AI_SELECT')
+
+        if ray.is_key_pressed(global_data.config["keys"]["pause_key"]):
+            self.pause_song()
+
+    def load_hitsounds(self):
+        """Load the hit sounds"""
+        sounds_dir = Path(f"Skins/{global_data.config["paths"]["skin"]}/Sounds")
+
+        # Load hitsounds for 1P
+        if global_data.hit_sound[global_data.player_num] == -1:
+            audio.load_sound(Path('none.wav'), 'hitsound_don_1p')
+            audio.load_sound(Path('none.wav'), 'hitsound_kat_1p')
+            logger.info("Loaded default (none) hit sounds for 1P")
+        elif global_data.hit_sound[global_data.player_num] == 0:
+            audio.load_sound(sounds_dir / "hit_sounds" / str(global_data.hit_sound[global_data.player_num]) / "don.wav", 'hitsound_don_1p')
+            audio.load_sound(sounds_dir / "hit_sounds" / str(global_data.hit_sound[global_data.player_num]) / "ka.wav", 'hitsound_kat_1p')
+            logger.info("Loaded wav hit sounds for 1P")
+        else:
+            audio.load_sound(sounds_dir / "hit_sounds" / str(global_data.hit_sound[global_data.player_num]) / "don.ogg", 'hitsound_don_1p')
+            audio.load_sound(sounds_dir / "hit_sounds" / str(global_data.hit_sound[global_data.player_num]) / "ka.ogg", 'hitsound_kat_1p')
+            logger.info("Loaded ogg hit sounds for 1P")
+        audio.set_sound_pan('hitsound_don_1p', 0.0)
+        audio.set_sound_pan('hitsound_kat_1p', 0.0)
+
+        # Load hitsounds for 2P
+        if global_data.hit_sound[global_data.player_num] == -1:
+            audio.load_sound(Path('none.wav'), 'hitsound_don_5p')
+            audio.load_sound(Path('none.wav'), 'hitsound_kat_5p')
+            logger.info("Loaded default (none) hit sounds for 5P")
+        elif global_data.hit_sound[global_data.player_num] == 0:
+            audio.load_sound(sounds_dir / "hit_sounds" / str(global_data.hit_sound[global_data.player_num]) / "don_2p.wav", 'hitsound_don_5p')
+            audio.load_sound(sounds_dir / "hit_sounds" / str(global_data.hit_sound[global_data.player_num]) / "ka_2p.wav", 'hitsound_kat_5p')
+            logger.info("Loaded wav hit sounds for 5P")
+        else:
+            audio.load_sound(sounds_dir / "hit_sounds" / str(global_data.hit_sound[global_data.player_num]) / "don.ogg", 'hitsound_don_5p')
+            audio.load_sound(sounds_dir / "hit_sounds" / str(global_data.hit_sound[global_data.player_num]) / "ka.ogg", 'hitsound_kat_5p')
+            logger.info("Loaded ogg hit sounds for 5P")
+        audio.set_sound_pan('hitsound_don_5p', 1.0)
+        audio.set_sound_pan('hitsound_kat_5p', 1.0)
+
+    def init_tja(self, song: Path):
+        """Initialize the TJA file"""
+        self.tja = TJAParser(song, start_delay=self.start_delay)
+        self.movie = None
+        global_data.session_data[global_data.player_num].song_title = self.tja.metadata.title.get(global_data.config['general']['language'].lower(), self.tja.metadata.title['en'])
+        if self.tja.metadata.wave.exists() and self.tja.metadata.wave.is_file() and self.song_music is None:
+            self.song_music = audio.load_music_stream(self.tja.metadata.wave, 'song')
+
+        tja_copy = copy.deepcopy(self.tja)
+        self.player_1 = PlayerNoChara(self.tja, global_data.player_num, global_data.session_data[global_data.player_num].selected_difficulty, False, global_data.modifiers[global_data.player_num])
+        self.player_1.gauge = AIGauge(self.player_1.player_num, self.player_1.difficulty, self.tja.metadata.course_data[self.player_1.difficulty].level, self.player_1.total_notes, self.player_1.is_2p)
+        ai_modifiers = copy.deepcopy(global_data.modifiers[global_data.player_num])
+        ai_modifiers.auto = True
+        self.player_2 = AIPlayer(tja_copy, PlayerNum.AI, global_data.session_data[global_data.player_num].selected_difficulty, True, ai_modifiers)
+        self.start_ms = (get_current_ms() - self.tja.metadata.offset*1000)
+        self.total_notes = len(self.player_1.don_notes) + len(self.player_1.kat_notes)
+        logger.info(f"TJA initialized for two-player song: {song}")
+
+    def update_scoreboards(self):
+        section_notes = self.total_notes // 5
+        if self.player_1.good_count + self.player_1.ok_count + self.player_1.bad_count == section_notes:
+            self.player_2.good_percentage = self.player_1.good_count / section_notes
+            self.player_2.ok_percentage = self.player_1.ok_count / section_notes
+            logger.info(f"AI Good Percentage: {self.player_2.good_percentage}, AI OK Percentage: {self.player_2.ok_percentage}")
+            self.player_1.good_count, self.player_1.ok_count, self.player_1.bad_count = 0, 0, 0
+            self.player_2.good_count, self.player_2.ok_count, self.player_2.bad_count = 0, 0, 0
+
+    def update(self):
+        super(GameScreen, self).update()
+        current_time = get_current_ms()
+        self.transition.update(current_time)
+        self.current_ms = current_time - self.start_ms
+        if self.transition.is_finished:
+            self.start_song(self.current_ms)
+        else:
+            self.start_ms = current_time - self.tja.metadata.offset*1000
+        self.update_background(current_time)
+
+        if self.song_music is not None:
+            audio.update_music_stream(self.song_music)
+
+        self.player_1.update(self.current_ms, current_time, None)
+        self.player_2.update(self.current_ms, current_time, None)
+        self.update_scoreboards()
+
+        self.song_info.update(current_time)
+        self.result_transition.update(current_time)
+        if self.result_transition.is_finished and not audio.is_sound_playing('result_transition'):
+            return self.on_screen_end('AI_SELECT')
+        elif self.current_ms >= self.player_1.end_time:
+            session_data = global_data.session_data[PlayerNum.P1]
+            session_data.result_data.score, session_data.result_data.good, session_data.result_data.ok, session_data.result_data.bad, session_data.result_data.max_combo, session_data.result_data.total_drumroll = self.player_1.get_result_score()
+            session_data.result_data.gauge_length = int(self.player_1.gauge.gauge_length)
+            if self.end_ms != 0:
+                if current_time >= self.end_ms + 1000:
+                    if self.player_1.ending_anim is None:
+                        self.spawn_ending_anims()
+                if current_time >= self.end_ms + 8533.34:
+                    if not self.result_transition.is_started:
+                        self.result_transition.start()
+                        audio.play_sound('result_transition', 'voice')
+            else:
+                self.end_ms = current_time
+
+        return self.global_keys()
+
+    def update_background(self, current_time):
+        if self.player_1.don_notes == self.player_2.don_notes and self.player_1.kat_notes == self.player_2.kat_notes:
+            self.background.update_values((self.player_1.good_count, self.player_1.ok_count), (self.player_2.good_count, self.player_2.ok_count))
+        self.background.update(current_time)
+
+    def draw(self):
+        if self.movie is not None:
+            self.movie.draw()
+        elif self.background is not None:
+            self.background.draw(self.player_1.chara, self.player_2.chara)
+        self.player_1.draw(self.current_ms, self.start_ms, self.mask_shader)
+        self.player_2.draw(self.current_ms, self.start_ms, self.mask_shader)
+        self.draw_overlay()
+
+class PlayerNoChara(Player):
+    def __init__(self, tja: TJAParser, player_num: PlayerNum, difficulty: int, is_2p: bool, modifiers: Modifiers):
+        super().__init__(tja, player_num, difficulty, is_2p, modifiers)
+        self.stretch_animation = [tex.get_animation(5, is_copy=True) for _ in range(4)]
+
+    def update(self, ms_from_start: float, current_time: float, background: Optional[Background]):
+        good_count, ok_count, bad_count, total_drumroll = self.good_count, self.ok_count, self.bad_count, self.total_drumroll
+        super().update(ms_from_start, current_time, background)
+        for ani in self.stretch_animation:
+            ani.update(current_time)
+        if good_count != self.good_count:
+            self.stretch_animation[0].start()
+        if ok_count != self.ok_count:
+            self.stretch_animation[1].start()
+        if bad_count != self.bad_count:
+            self.stretch_animation[2].start()
+        if total_drumroll != self.total_drumroll:
+            self.stretch_animation[3].start()
+
+    def draw_overlays(self, mask_shader: ray.Shader):
+        tex.draw_texture('lane', f'{self.player_num}p_lane_cover', index=self.is_2p)
+        tex.draw_texture('lane', 'drum', index=self.is_2p)
+        if self.ending_anim is not None:
+            self.ending_anim.draw()
+
+        for anim in self.draw_drum_hit_list:
+            anim.draw()
+        for anim in self.draw_arc_list:
+            anim.draw(mask_shader)
+
+        # Group 6: UI overlays
+        self.combo_display.draw()
+        tex.draw_texture('lane', 'lane_score_cover', index=self.is_2p)
+        tex.draw_texture('lane', f'{self.player_num}p_icon', index=self.is_2p)
+        tex.draw_texture('lane', 'lane_difficulty', frame=self.difficulty, index=self.is_2p)
+
+        # Group 7: Player-specific elements
+        if self.modifiers.auto:
+            tex.draw_texture('lane', 'auto_icon', index=self.is_2p)
+        else:
+            if self.is_2p:
+                self.nameplate.draw(tex.skin_config["game_nameplate_1p"].x, tex.skin_config["game_nameplate_1p"].y)
+            else:
+                self.nameplate.draw(tex.skin_config["game_nameplate_2p"].x, tex.skin_config["game_nameplate_2p"].y)
+        self.draw_modifiers()
+
+        tex.draw_texture('ai_battle', 'scoreboard')
+        for j, counter in enumerate([self.good_count, self.ok_count, self.bad_count, self.total_drumroll]):
+            margin = tex.textures["ai_battle"]["scoreboard_num"].width//2
+            total_width = len(str(counter)) * margin
+            for i, digit in enumerate(str(counter)):
+                tex.draw_texture('ai_battle', 'scoreboard_num', frame=int(digit), x=-(total_width // 2) + (i * margin), y=-self.stretch_animation[j].attribute, y2=self.stretch_animation[j].attribute, index=j, controllable=True)
+
+        # Group 8: Special animations and counters
+        if self.drumroll_counter is not None:
+            self.drumroll_counter.draw()
+        if self.balloon_anim is not None:
+            self.balloon_anim.draw()
+        if self.kusudama_anim is not None:
+            self.kusudama_anim.draw()
+        self.score_counter.draw()
+        for anim in self.base_score_list:
+            anim.draw()
+
+
+class AIPlayer(Player):
+    def __init__(self, tja: TJAParser, player_num: PlayerNum, difficulty: int, is_2p: bool, modifiers: Modifiers):
+        super().__init__(tja, player_num, difficulty, is_2p, modifiers)
+        self.stretch_animation = [tex.get_animation(5, is_copy=True) for _ in range(4)]
+        self.chara = Chara2D(player_num - 1, self.bpm)
+        self.judge_counter = None
+        self.gauge = None
+        self.gauge_hit_effect = []
+        plate_info = global_data.config[f'nameplate_{self.is_2p+1}p']
+        self.nameplate = Nameplate(plate_info['name'], plate_info['title'], PlayerNum.AI, plate_info['dan'], plate_info['gold'], plate_info['rainbow'], plate_info['title_bg'])
+        self.good_percentage = 0.90
+        self.ok_percentage = 0.07
+
+    def update(self, ms_from_start: float, current_time: float, background: Optional[Background]):
+        good_count, ok_count, bad_count, total_drumroll = self.good_count, self.ok_count, self.bad_count, self.total_drumroll
+        super().update(ms_from_start, current_time, background)
+        for ani in self.stretch_animation:
+            ani.update(current_time)
+        if good_count != self.good_count:
+            self.stretch_animation[0].start()
+        if ok_count != self.ok_count:
+            self.stretch_animation[1].start()
+        if bad_count != self.bad_count:
+            self.stretch_animation[2].start()
+        if total_drumroll != self.total_drumroll:
+            self.stretch_animation[3].start()
+
+    def autoplay_manager(self, ms_from_start: float, current_time: float, background: Optional[Background]):
+        """Manages autoplay behavior with randomized accuracy"""
+        if not self.modifiers.auto:
+            return
+
+        if self.is_drumroll or self.is_balloon:
+            if self.bpm == 0:
+                subdivision_in_ms = 0
+            else:
+                subdivision_in_ms = ms_from_start // ((60000 * 4 / self.bpm) / 24)
+            if subdivision_in_ms > self.last_subdivision:
+                self.last_subdivision = subdivision_in_ms
+                hit_type = DrumType.DON
+                self.autoplay_hit_side = Side.RIGHT if self.autoplay_hit_side == Side.LEFT else Side.LEFT
+                self.spawn_hit_effects(hit_type, self.autoplay_hit_side)
+                audio.play_sound(f'hitsound_don_{self.player_num}p', 'hitsound')
+                self.check_note(ms_from_start, hit_type, current_time, background)
+        else:
+            if self.difficulty < Difficulty.NORMAL:
+                good_window_ms = Player.TIMING_GOOD_EASY
+                ok_window_ms = Player.TIMING_OK_EASY
+                bad_window_ms = Player.TIMING_BAD_EASY
+            else:
+                good_window_ms = Player.TIMING_GOOD
+                ok_window_ms = Player.TIMING_OK
+                bad_window_ms = Player.TIMING_BAD
+
+            self._adjust_timing(self.don_notes, DrumType.DON, 'don',
+                                         ms_from_start, current_time, background,
+                                         good_window_ms, ok_window_ms, bad_window_ms)
+            self._adjust_timing(self.kat_notes, DrumType.KAT, 'kat',
+                                         ms_from_start, current_time, background,
+                                         good_window_ms, ok_window_ms, bad_window_ms)
+
+    def _adjust_timing(self, notes, hit_type, sound_type, ms_from_start,
+                                current_time, background, good_window_ms, ok_window_ms, bad_window_ms):
+        """Process autoplay for a specific note type"""
+        while notes and ms_from_start >= notes[0].hit_ms:
+            note = notes[0]
+            rand = random.random()
+            if rand < (self.good_percentage):
+                timing_offset = random.uniform(-good_window_ms * 0.5, good_window_ms * 0.5)
+            elif rand < (self.good_percentage + self.ok_percentage):
+                timing_offset = random.choice([
+                    random.uniform(-ok_window_ms, -good_window_ms),
+                    random.uniform(good_window_ms, ok_window_ms)
+                ])
+            else:
+                timing_offset = random.choice([
+                    random.uniform(-bad_window_ms * 1.5, -bad_window_ms),
+                    random.uniform(bad_window_ms, bad_window_ms * 1.5)
+                ])
+            adjusted_ms = note.hit_ms + timing_offset
+            self.autoplay_hit_side = Side.RIGHT if self.autoplay_hit_side == Side.LEFT else Side.LEFT
+            self.spawn_hit_effects(hit_type, self.autoplay_hit_side)
+            audio.play_sound(f'hitsound_{sound_type}_{self.player_num}p', 'hitsound')
+            self.check_note(adjusted_ms, hit_type, current_time, background)
+
+    def draw_overlays(self, mask_shader: ray.Shader):
+        # Group 4: Lane covers and UI elements (batch similar textures)
+        tex.draw_texture('lane', 'ai_lane_cover')
+        tex.draw_texture('lane', 'drum', index=self.is_2p)
+        if self.ending_anim is not None:
+            self.ending_anim.draw()
+
+        # Group 5: Hit effects and animations
+        for anim in self.draw_drum_hit_list:
+            anim.draw()
+        for anim in self.draw_arc_list:
+            anim.draw(mask_shader)
+
+        # Group 6: UI overlays
+        self.combo_display.draw()
+        if self.judge_counter is not None:
+            self.judge_counter.draw()
+
+        # Group 7: Player-specific elements
+        if self.is_2p:
+            self.nameplate.draw(tex.skin_config["game_nameplate_1p"].x, tex.skin_config["game_nameplate_1p"].y)
+        else:
+            self.nameplate.draw(tex.skin_config["game_nameplate_2p"].x, tex.skin_config["game_nameplate_2p"].y)
+
+        tex.draw_texture('ai_battle', 'scoreboard_ai')
+        for j, counter in enumerate([self.good_count, self.ok_count, self.bad_count, self.total_drumroll]):
+            margin = tex.textures["ai_battle"]["scoreboard_num"].width//2
+            total_width = len(str(counter)) * margin
+            for i, digit in enumerate(str(counter)):
+                tex.draw_texture('ai_battle', 'scoreboard_num', frame=int(digit), x=-(total_width // 2) + (i * margin), y=-self.stretch_animation[j].attribute, y2=self.stretch_animation[j].attribute, index=j+4, controllable=True)
+
+        # Group 8: Special animations and counters
+        if self.drumroll_counter is not None:
+            self.drumroll_counter.draw()
+        if self.balloon_anim is not None:
+            self.balloon_anim.draw()
+        if self.kusudama_anim is not None:
+            self.kusudama_anim.draw()
+
+class AIGauge(Gauge):
+    def draw(self):
+        scale = 0.5
+        x, y = 10 * tex.screen_scale, 15 * tex.screen_scale
+        tex.draw_texture('gauge_ai', f'{self.player_num}p_unfilled' + self.string_diff, scale=scale, x=x, y=y)
+        gauge_length = int(self.gauge_length)
+        clear_point = self.clear_start[self.difficulty]
+        bar_width = tex.textures["gauge_ai"][f"{self.player_num}p_bar"].width * scale
+        tex.draw_texture('gauge_ai', f'{self.player_num}p_bar', x2=min(gauge_length*bar_width, (clear_point - 1)*bar_width)-bar_width, scale=scale, x=x, y=y)
+        if gauge_length >= clear_point - 1:
+            tex.draw_texture('gauge_ai', 'bar_clear_transition', x=((clear_point - 1)*bar_width)+x, scale=scale, y=y)
+        if gauge_length > clear_point:
+            tex.draw_texture('gauge_ai', 'bar_clear_top', x=((clear_point) * bar_width)+x, x2=(gauge_length-clear_point)*bar_width, scale=scale, y=y)
+            tex.draw_texture('gauge_ai', 'bar_clear_bottom', x=((clear_point) * bar_width)+x, x2=(gauge_length-clear_point)*bar_width, scale=scale, y=y)
+
+        # Rainbow effect for full gauge
+        if gauge_length == self.gauge_max and self.rainbow_fade_in is not None:
+            if 0 < self.rainbow_animation.attribute < 8:
+                tex.draw_texture('gauge_ai', 'rainbow' + self.string_diff, frame=self.rainbow_animation.attribute-1, fade=self.rainbow_fade_in.attribute, scale=scale, x=x, y=y)
+            tex.draw_texture('gauge_ai', 'rainbow' + self.string_diff, frame=self.rainbow_animation.attribute, fade=self.rainbow_fade_in.attribute, scale=scale, x=x, y=y)
+        if self.gauge_update_anim is not None and gauge_length <= self.gauge_max and gauge_length > self.previous_length:
+            if gauge_length == self.clear_start[self.difficulty]:
+                tex.draw_texture('gauge_ai', 'bar_clear_transition_fade', x=(gauge_length*bar_width)+x, fade=self.gauge_update_anim.attribute, scale=scale, y=y)
+            elif gauge_length > self.clear_start[self.difficulty]:
+                tex.draw_texture('gauge_ai', 'bar_clear_fade', x=(gauge_length*bar_width)+x, fade=self.gauge_update_anim.attribute, scale=scale, y=y)
+            else:
+                tex.draw_texture('gauge_ai', f'{self.player_num}p_bar_fade', x=(gauge_length*bar_width)+x, fade=self.gauge_update_anim.attribute, scale=scale, y=y)
+        tex.draw_texture('gauge_ai', 'overlay' + self.string_diff, fade=0.15, scale=scale, x=x, y=y)
+
+        # Draw clear status indicators
+        tex.draw_texture('gauge_ai', 'footer', scale=scale, x=x, y=y)
+        if gauge_length >= clear_point-1:
+            tex.draw_texture('gauge_ai', 'clear', index=min(2, self.difficulty), scale=scale, x=x, y=y)
+            if self.is_rainbow:
+                tex.draw_texture('gauge_ai', 'tamashii_fire', scale=0.75 * scale, center=True, frame=self.tamashii_fire_change.attribute, index=self.is_2p)
+            tex.draw_texture('gauge_ai', 'tamashii', scale=scale, x=x, y=y)
+            if self.is_rainbow and self.tamashii_fire_change.attribute in (0, 1, 4, 5):
+                tex.draw_texture('gauge_ai', 'tamashii_overlay', fade=0.5, scale=scale, x=x, y=y)
+        else:
+            tex.draw_texture('gauge_ai', 'clear_dark', index=min(2, self.difficulty), scale=scale, x=x, y=y)
+            tex.draw_texture('gauge_ai', 'tamashii_dark', scale=scale, x=x, y=y)
+
+class SongInfoAI(SongInfo):
+    """Displays the song name and genre"""
+    def draw(self):
+        y = 600 * tex.screen_scale
+        tex.draw_texture('song_info', 'song_num', fade=self.fade.attribute, frame=global_data.songs_played % 4, y=y)
+
+        text_x = tex.skin_config["song_info"].x - self.song_title.texture.width
+        text_y = tex.skin_config["song_info"].y - self.song_title.texture.height//2
+        self.song_title.draw(outline_color=ray.BLACK, x=text_x, y=text_y+y, color=ray.fade(ray.WHITE, 1 - self.fade.attribute))
+
+        if self.genre < 9:
+            tex.draw_texture('song_info', 'genre', fade=1 - self.fade.attribute, frame=self.genre, y=y)
+
+class AIBackground:
+    def __init__(self, difficulty: int):
+        self.contest_point = 10
+        self.total_tiles = 19
+        self.difference = 0
+        self.difficulty = min(difficulty, 3)
+        self.multipliers = [
+            [5, 3],
+            [5, 3],
+            [3, 2],
+            [3, 1]
+        ]
+
+        self.contest_point_fade = Animation.create_fade(166, initial_opacity=0.0, final_opacity=1.0, reverse_delay=166, delay=166, loop=True)
+        self.contest_point_fade.start()
+
+    def update(self, current_ms: float):
+        self.contest_point_fade.update(current_ms)
+
+    def update_values(self, player_judge: tuple[int, int], ai_judge: tuple[int, int]):
+        player_total = (player_judge[0] * self.multipliers[self.difficulty][0]) + (player_judge[1] * self.multipliers[self.difficulty][1])
+        ai_total = (ai_judge[0] * self.multipliers[self.difficulty][0]) + (ai_judge[1] * self.multipliers[self.difficulty][1])
+        self.contest_point = ((player_total - ai_total) // 2) + 10
+        self.contest_point = min(max(1, self.contest_point), self.total_tiles - 1)
+
+    def unload(self):
+        pass
+
+    def draw_lower(self):
+        tex.draw_texture('ai_battle', 'bg_lower')
+        tile_width = tex.textures['ai_battle']['red_tile_lower'].width
+        for i in range(self.contest_point):
+            tex.draw_texture('ai_battle', 'red_tile_lower', frame=i, x=(i*tile_width))
+        for i in range(self.total_tiles - self.contest_point):
+            tex.draw_texture('ai_battle', 'blue_tile_lower', frame=i, x=(((self.total_tiles - 1) - i)*tile_width))
+        tex.draw_texture('ai_battle', 'highlight_tile_lower', x=self.contest_point * tile_width, fade=self.contest_point_fade.attribute)
+
+    def draw_upper(self, chara_1: Chara2D, chara_2: Chara2D):
+        tex.draw_texture('ai_battle', 'bg_upper')
+        for i in range(self.contest_point):
+            tex.draw_texture('ai_battle', 'red_tile_upper', frame=i, index=i)
+        for i in range(self.total_tiles - self.contest_point):
+            tex.draw_texture('ai_battle', 'blue_tile_upper', frame=i, index=(self.total_tiles - 1) - i)
+        tex.draw_texture('ai_battle', 'bg_outline_upper')
+        if self.contest_point > 9:
+            frame = self.total_tiles - self.contest_point
+            mirror = 'horizontal'
+        else:
+            frame = self.contest_point - 1
+            mirror = ''
+        tex.draw_texture('ai_battle', 'highlight_tile_upper', frame=frame, index=self.contest_point-1, mirror=mirror, fade=self.contest_point_fade.attribute)
+        tile_width = tex.textures['ai_battle']['red_tile_lower'].width
+        offset = 60
+        chara_1.draw(x=tile_width*self.contest_point - (global_tex.textures['chara_0']['normal'].width//2) - offset, y=40, scale=0.5)
+        chara_2.draw(x=tile_width*self.contest_point - (global_tex.textures['chara_4']['normal'].width//2) + offset*1.3, y=40, scale=0.5, mirror=True)
+
+    def draw(self, chara_1: Chara2D, chara_2: Chara2D):
+        self.draw_lower()
+        self.draw_upper(chara_1, chara_2)

scenes/ai_battle/song_select.py

@@ -0,0 +1,263 @@
+import logging
+
+import pyray as ray
+
+from libs.audio import audio
+from libs.chara_2d import Chara2D
+from libs.file_navigator import SongFile
+from libs.global_data import Difficulty, PlayerNum, global_data
+from libs.texture import tex
+from libs.utils import (
+    is_l_don_pressed,
+    is_l_kat_pressed,
+    is_r_don_pressed,
+    is_r_kat_pressed,
+)
+from scenes.song_select import (
+    ModifierSelector,
+    NeiroSelector,
+    SongSelectPlayer,
+    SongSelectScreen,
+    State,
+)
+
+logger = logging.getLogger(__name__)
+
+class AISongSelectScreen(SongSelectScreen):
+    def on_screen_start(self):
+        super().on_screen_start()
+        self.player_1 = AISongSelectPlayer(global_data.player_num, self.text_fade_in)
+        global_data.modifiers[global_data.player_num].subdiff = 0
+        self.ai_chara = Chara2D(PlayerNum.AI-1)
+
+    def update_players(self, current_time) -> str:
+        self.player_1.update(current_time)
+        self.ai_chara.update(current_time)
+        if self.text_fade_out.is_finished:
+            self.player_1.selected_song = True
+        next_screen = "AI_GAME"
+        return next_screen
+
+    def draw_background(self):
+        tex.draw_texture('ai_battle', 'background')
+        tex.draw_texture('ai_battle', 'background_overlay')
+        tex.draw_texture('ai_battle', 'background_overlay_2')
+
+    def draw(self):
+        self.draw_background()
+
+        if self.navigator.genre_bg is not None and self.state == State.BROWSING:
+            self.navigator.genre_bg.draw(tex.skin_config["boxes"].y)
+
+        self.navigator.draw_boxes(self.move_away.attribute, self.player_1.is_ura, self.diff_fade_out.attribute)
+
+        if self.state == State.BROWSING:
+            tex.draw_texture('global', 'arrow', index=0, x=-(self.blue_arrow_move.attribute*2), fade=self.blue_arrow_fade.attribute)
+            tex.draw_texture('global', 'arrow', index=1, mirror='horizontal', x=self.blue_arrow_move.attribute*2, fade=self.blue_arrow_fade.attribute)
+        tex.draw_texture('global', 'footer')
+
+        self.ura_switch_animation.draw()
+
+        if self.diff_sort_selector is not None:
+            self.diff_sort_selector.draw()
+
+        if self.search_box is not None:
+            self.search_box.draw()
+
+        if (self.player_1.selected_song and self.state == State.SONG_SELECTED):
+            tex.draw_texture('global', 'difficulty_select', fade=self.text_fade_in.attribute)
+        elif self.state == State.DIFF_SORTING:
+            tex.draw_texture('global', 'difficulty_select', fade=self.text_fade_in.attribute)
+        else:
+            tex.draw_texture('global', 'song_select', fade=self.text_fade_out.attribute)
+
+        self.draw_players()
+        self.ai_chara.draw(x=tex.skin_config["song_select_chara_2p"].x, y=tex.skin_config["song_select_chara_2p"].y, mirror=True)
+
+        if self.state == State.BROWSING and self.navigator.items != []:
+            curr_item = self.navigator.get_current_item()
+            if isinstance(curr_item, SongFile):
+                curr_item.box.draw_score_history()
+
+        if self.player_1.subdiff_selector is not None and self.player_1.subdiff_selector.is_selected:
+            ray.draw_rectangle(0, 0, tex.screen_width, tex.screen_height, ray.fade(ray.BLACK, 0.5))
+            self.player_1.subdiff_selector.draw()
+
+        self.draw_overlay()
+
+class AISongSelectPlayer(SongSelectPlayer):
+    def __init__(self, player_num: PlayerNum, text_fade_in):
+        super().__init__(player_num, text_fade_in)
+        self.subdiff_selector = None
+
+    def update(self, current_time):
+        super().update(current_time)
+        if self.subdiff_selector is not None:
+            self.subdiff_selector.update(current_time, self.selected_difficulty)
+
+    def on_song_selected(self, selected_song: SongFile):
+        """Called when a song is selected"""
+        super().on_song_selected(selected_song)
+        self.subdiff_selector = SubdiffSelector(self.player_num, min(selected_song.tja.metadata.course_data))
+
+    def handle_input_selected(self, current_item):
+        """Handle input for selecting difficulty. Returns 'cancel', 'confirm', or None"""
+        if self.neiro_selector is not None:
+            if is_l_kat_pressed(self.player_num):
+                self.neiro_selector.move_left()
+            elif is_r_kat_pressed(self.player_num):
+                self.neiro_selector.move_right()
+            if is_l_don_pressed(self.player_num) or is_r_don_pressed(self.player_num):
+                audio.play_sound('don', 'sound')
+                self.neiro_selector.confirm()
+            return None
+
+        if self.modifier_selector is not None:
+            if is_l_kat_pressed(self.player_num):
+                audio.play_sound('kat', 'sound')
+                self.modifier_selector.left()
+            elif is_r_kat_pressed(self.player_num):
+                audio.play_sound('kat', 'sound')
+                self.modifier_selector.right()
+            if is_l_don_pressed(self.player_num) or is_r_don_pressed(self.player_num):
+                audio.play_sound('don', 'sound')
+                self.modifier_selector.confirm()
+            return None
+
+        if self.subdiff_selector is not None and self.subdiff_selector.is_selected:
+            if is_l_kat_pressed(self.player_num):
+                audio.play_sound('kat', 'sound')
+                self.subdiff_selector.move_left(self.selected_difficulty)
+            elif is_r_kat_pressed(self.player_num):
+                audio.play_sound('kat', 'sound')
+                self.subdiff_selector.move_right(self.selected_difficulty)
+            if is_l_don_pressed(self.player_num) or is_r_don_pressed(self.player_num):
+                audio.play_sound('don', 'sound')
+                self.subdiff_selector.confirm()
+                self.is_ready = True
+                return "confirm"
+            return None
+
+        if is_l_don_pressed(self.player_num) or is_r_don_pressed(self.player_num):
+            if self.selected_difficulty == -3:
+                self.subdiff_selector = None
+                return "cancel"
+            elif self.selected_difficulty == -2:
+                audio.play_sound('don', 'sound')
+                self.modifier_selector = ModifierSelector(self.player_num)
+                return None
+            elif self.selected_difficulty == -1:
+                audio.play_sound('don', 'sound')
+                self.neiro_selector = NeiroSelector(self.player_num)
+                return None
+            else:
+                audio.play_sound('don', 'sound')
+                if self.subdiff_selector is not None:
+                    self.subdiff_selector.is_selected = True
+
+        if is_l_kat_pressed(self.player_num) or is_r_kat_pressed(self.player_num):
+            audio.play_sound('kat', 'sound')
+            selected_song = current_item
+            diffs = sorted(selected_song.tja.metadata.course_data)
+            prev_diff = self.selected_difficulty
+            ret_val = None
+
+            if is_l_kat_pressed(self.player_num):
+                ret_val = self._navigate_difficulty_left(diffs)
+            elif is_r_kat_pressed(self.player_num):
+                ret_val = self._navigate_difficulty_right(diffs)
+
+            if Difficulty.EASY <= self.selected_difficulty <= Difficulty.URA and self.selected_difficulty != prev_diff:
+                self.selected_diff_bounce.start()
+                self.selected_diff_fadein.start()
+
+
+            return ret_val
+
+        if (ray.is_key_pressed(ray.KeyboardKey.KEY_TAB) and
+            self.selected_difficulty in [Difficulty.ONI, Difficulty.URA]):
+            return self._toggle_ura_mode()
+
+        return None
+
+    def draw(self, state: int, is_half: bool = False):
+        if (self.selected_song and state == State.SONG_SELECTED):
+            self.draw_selector(is_half)
+
+        offset = 0
+        if self.subdiff_selector is not None:
+            offset = -self.subdiff_selector.move.attribute*1.05
+        self.nameplate.draw(tex.skin_config["song_select_nameplate_1p"].x, tex.skin_config["song_select_nameplate_1p"].y)
+        self.chara.draw(x=tex.skin_config["song_select_chara_1p"].x, y=tex.skin_config["song_select_chara_1p"].y + (offset*0.6))
+
+        if self.subdiff_selector is not None:
+            self.subdiff_selector.draw()
+
+        if self.neiro_selector is not None:
+            self.neiro_selector.draw()
+
+        if self.modifier_selector is not None:
+            self.modifier_selector.draw()
+
+class SubdiffSelector:
+    def __init__(self, player_num: PlayerNum, lowest_difficulty: int):
+        self.player_num = player_num
+        self.move = tex.get_animation(28, is_copy=True)
+        self.blue_arrow_fade = tex.get_animation(29, is_copy=True)
+        self.blue_arrow_move = tex.get_animation(30, is_copy=True)
+        self.move.start()
+        self.is_selected = False
+        self.selected_index = 0
+        subdiffs_easy = [('subdiff_easy', 0), ('subdiff_normal', 0), ('subdiff_normal', 1), ('subdiff_normal', 2)]
+        subdiffs_normal = [('subdiff_normal', 0), ('subdiff_normal', 1), ('subdiff_normal', 2), ('subdiff_normal', 3)]
+        subdiffs_hard = [('subdiff_hard', 0), ('subdiff_hard', 1), ('subdiff_hard', 2), ('subdiff_hard', 3)]
+        subdiffs_oni = [('subdiff_oni', 0), ('subdiff_oni', 1), ('subdiff_oni', 2), ('subdiff_oni', 3)]
+        self.levels = [
+            [1, 2, 3, 4],
+            [2, 3, 4, 5],
+            [6, 7, 8, 9],
+            [10, 11, 12, 13],
+            [10, 11, 12, 13]
+        ]
+        self.selected_level = 1
+
+        self.diff_map = {
+            Difficulty.EASY: subdiffs_easy,
+            Difficulty.NORMAL: subdiffs_normal,
+            Difficulty.HARD: subdiffs_hard,
+            Difficulty.ONI: subdiffs_oni,
+            Difficulty.URA: subdiffs_oni
+        }
+        self.selected_subdiff = self.diff_map[Difficulty(lowest_difficulty)]
+
+    def update(self, current_ms: float, current_difficulty: int):
+        self.move.update(current_ms)
+        if current_difficulty in self.diff_map:
+            self.selected_subdiff = self.diff_map[Difficulty(current_difficulty)]
+
+    def move_left(self, difficulty: int):
+        self.selected_index = max(0, self.selected_index - 1)
+        self.selected_level = self.levels[difficulty][self.selected_index]
+
+    def move_right(self, difficulty: int):
+        self.selected_index = min(3, self.selected_index + 1)
+        self.selected_level = self.levels[difficulty][self.selected_index]
+
+    def confirm(self):
+        global_data.modifiers[self.player_num].subdiff = self.selected_level
+
+    def draw(self):
+        y = -self.move.attribute*1.05
+        if self.is_selected:
+            tex.draw_texture('ai_battle', 'box_bg_blur', y=y)
+            tex.draw_texture('ai_battle', 'box_2', y=y)
+            tex.draw_texture('ai_battle', 'subdiff_select_text', y=y)
+        else:
+            tex.draw_texture('ai_battle', 'box_1', y=y)
+
+        tex.draw_texture('ai_battle', 'subdiff_selector', x=self.selected_index*tex.textures['ai_battle']['subdiff_easy'].width, y=y)
+        for i, subdiff in enumerate(self.selected_subdiff):
+            name, frame = subdiff
+            tex.draw_texture('ai_battle', name, frame=frame, x=i*tex.textures['ai_battle'][name].width, y=y)
+
+        tex.draw_texture('ai_battle', 'bottom_text', y=y)

scenes/entry.py

@@ -56,6 +56,9 @@ class EntryScreen(Screen):
         self.chara = Chara2D(0)
         self.announce_played = False
         self.players: list[Optional[EntryPlayer]] = [None, None]
+
+        self.text_cancel = OutlinedText(tex.skin_config["entry_cancel"].text[global_data.config["general"]["language"]], tex.skin_config["entry_cancel"].font_size, ray.WHITE, outline_thickness=4, spacing=-4)
+        self.text_question = OutlinedText(tex.skin_config["entry_question"].text[global_data.config["general"]["language"]], tex.skin_config["entry_question"].font_size, ray.WHITE, outline_thickness=4, spacing=-1)
         audio.play_sound('bgm', 'music')
 
     def on_screen_end(self, next_screen: str):
@@ -164,7 +167,7 @@ class EntryScreen(Screen):
         tex.draw_texture('side_select', 'box_right', fade=fade)
         tex.draw_texture('side_select', 'box_center', fade=fade)
 
-        tex.draw_texture('side_select', 'question', fade=fade)
+        self.text_question.draw(outline_color=ray.BLACK, x=tex.skin_config["entry_question"].x-self.text_question.texture.width//2, y=tex.skin_config["entry_question"].y, fade=fade)
 
         self.chara.draw(tex.skin_config["chara_entry"].x, tex.skin_config["chara_entry"].y)
 
@@ -180,7 +183,7 @@ class EntryScreen(Screen):
         else:
             tex.draw_texture('side_select', '2P_highlight', fade=fade)
             tex.draw_texture('side_select', '1P2P_outline', index=1, fade=fade)
-        tex.draw_texture('side_select', 'cancel_text', fade=fade)
+        self.text_cancel.draw(outline_color=ray.BLACK, x=tex.skin_config["entry_cancel"].x-self.text_cancel.texture.width//2, y=tex.skin_config["entry_cancel"].y, fade=fade)
         self.nameplate.draw(tex.skin_config["nameplate_entry"].x, tex.skin_config["nameplate_entry"].y)
 
     def draw_player_drum(self):
@@ -449,8 +452,9 @@ class BoxManager:
         self.box_titles: list[OutlinedText] = [
         OutlinedText(tex.skin_config["entry_game"].text[global_data.config["general"]["language"]], tex.skin_config["entry_box_text"].font_size, ray.WHITE, outline_thickness=5, vertical=True),
         OutlinedText(tex.skin_config["entry_practice"].text[global_data.config["general"]["language"]], tex.skin_config["entry_box_text"].font_size, ray.WHITE, outline_thickness=5, vertical=True),
-        OutlinedText(tex.skin_config["entry_settings"].text[global_data.config["general"]["language"]], tex.skin_config["entry_box_text"].font_size, ray.WHITE, outline_thickness=5, vertical=True)]
-        self.box_locations = ["SONG_SELECT", "PRACTICE_SELECT", "SETTINGS"]
+        OutlinedText(tex.skin_config["entry_ai_battle"].text[global_data.config["general"]["language"]], tex.skin_config["entry_box_text"].font_size, ray.WHITE, outline_thickness=5, vertical=True),
+        OutlinedText(tex.skin_config["entry_settings"].text[global_data.config["general"]["language"]], tex.skin_config["entry_box_text"].font_size, ray.WHITE, outline_thickness=5, vertical=True),]
+        self.box_locations = ["SONG_SELECT", "PRACTICE_SELECT", "AI_SELECT", "SETTINGS"]
         self.num_boxes = len(self.box_titles)
         self.boxes = [Box(self.box_titles[i], self.box_locations[i]) for i in range(len(self.box_titles))]
         self.selected_box_index = 0
@@ -509,7 +513,7 @@ class BoxManager:
     def update(self, current_time_ms: float, is_2p: bool):
         self.is_2p = is_2p
         if self.is_2p:
-            self.box_locations = ["SONG_SELECT_2P", "PRACTICE_SELECT", "SETTINGS"]
+            self.box_locations = ["SONG_SELECT_2P", "PRACTICE_SELECT", "AI_SELECT", "SETTINGS"]
             for i, box in enumerate(self.boxes):
                 box.location = self.box_locations[i]
         self.fade_out.update(current_time_ms)

scenes/game.py

@@ -401,7 +401,7 @@ class Player:
 
     def reset_chart(self):
         notes, self.branch_m, self.branch_e, self.branch_n = self.tja.notes_to_position(self.difficulty)
-        self.play_notes, self.draw_note_list, self.draw_bar_list = apply_modifiers(notes, self.modifiers)
+        self.play_notes, self.draw_note_list, self.draw_bar_list = deque(apply_modifiers(notes, self.modifiers)[0]), deque(apply_modifiers(notes, self.modifiers)[1]), deque(apply_modifiers(notes, self.modifiers)[2])
 
         self.don_notes = deque([note for note in self.play_notes if note.type in {NoteType.DON, NoteType.DON_L}])
         self.kat_notes = deque([note for note in self.play_notes if note.type in {NoteType.KAT, NoteType.KAT_L}])
@@ -449,7 +449,7 @@ class Player:
         self.bpm = 120
         if self.timeline and hasattr(self.timeline[self.timeline_index], 'bpm'):
             self.bpm = self.timeline[self.timeline_index].bpm
-        last_note = self.draw_note_list[0]
+        last_note = self.draw_note_list[0] if self.draw_note_list else self.branch_m[0].draw_notes[0]
         for note in chain(self.draw_note_list, self.draw_bar_list):
             self.get_load_time(note)
             if note.type == NoteType.TAIL:
@@ -490,6 +490,7 @@ class Player:
         for branch in (self.branch_m, self.branch_e, self.branch_n):
             if branch:
                 for section in branch:
+                    section.play_notes, section.draw_notes, section.bars = apply_modifiers(section, self.modifiers)
                     if section.draw_notes:
                         for note in section.draw_notes:
                             self.get_load_time(note)
@@ -1281,21 +1282,21 @@ class Player:
             modifiers_to_draw.append('mod_shinuchi')
 
         # Speed modifiers
-        if global_data.modifiers[self.player_num].speed >= 4:
+        if self.modifiers.speed >= 4:
             modifiers_to_draw.append('mod_yonbai')
-        elif global_data.modifiers[self.player_num].speed >= 3:
+        elif self.modifiers.speed >= 3:
             modifiers_to_draw.append('mod_sanbai')
-        elif global_data.modifiers[self.player_num].speed > 1:
+        elif self.modifiers.speed > 1:
             modifiers_to_draw.append('mod_baisaku')
 
         # Other modifiers
-        if global_data.modifiers[self.player_num].display:
+        if self.modifiers.display:
             modifiers_to_draw.append('mod_doron')
-        if global_data.modifiers[self.player_num].inverse:
+        if self.modifiers.inverse:
             modifiers_to_draw.append('mod_abekobe')
-        if global_data.modifiers[self.player_num].random == 2:
+        if self.modifiers.random == 2:
             modifiers_to_draw.append('mod_detarame')
-        elif global_data.modifiers[self.player_num].random == 1:
+        elif self.modifiers.random == 1:
             modifiers_to_draw.append('mod_kimagure')
 
         # Draw all modifiers in one batch
@@ -1335,13 +1336,13 @@ class Player:
             self.judge_counter.draw()
 
         # Group 7: Player-specific elements
-        if not self.modifiers.auto:
+        if self.modifiers.auto:
+            tex.draw_texture('lane', 'auto_icon', index=self.is_2p)
+        else:
             if self.is_2p:
                 self.nameplate.draw(tex.skin_config["game_nameplate_1p"].x, tex.skin_config["game_nameplate_1p"].y)
             else:
                 self.nameplate.draw(tex.skin_config["game_nameplate_2p"].x, tex.skin_config["game_nameplate_2p"].y)
-        else:
-            tex.draw_texture('lane', 'auto_icon', index=self.is_2p)
         self.draw_modifiers()
         self.chara.draw(y=(self.is_2p*tex.skin_config["game_2p_offset"].y))
 
@@ -1359,6 +1360,8 @@ class Player:
     def draw(self, ms_from_start: float, start_ms: float, mask_shader: ray.Shader, dan_transition = None):
         # Group 1: Background and lane elements
         tex.draw_texture('lane', 'lane_background', index=self.is_2p)
+        if self.player_num == PlayerNum.AI:
+            tex.draw_texture('lane', 'ai_lane_background')
         if self.branch_indicator is not None:
             self.branch_indicator.draw()
         if self.gauge is not None:
@@ -1766,7 +1769,7 @@ class BalloonAnimation:
             tex.draw_texture('balloon', 'pop', frame=7, color=self.color, y=self.is_2p*tex.skin_config["2p_offset"].y)
         elif self.balloon_count >= 1:
             balloon_index = min(6, (self.balloon_count - 1) * 6 // self.balloon_total)
-            tex.draw_texture('balloon', 'pop', frame=balloon_index, color=self.color, index=self.player_num-1, y=self.is_2p*tex.skin_config["2p_offset"].y)
+            tex.draw_texture('balloon', 'pop', frame=balloon_index, color=self.color, index=self.is_2p, y=self.is_2p*tex.skin_config["2p_offset"].y)
         if self.balloon_count > 0:
             tex.draw_texture('balloon', 'bubble', y=self.is_2p*(410 * tex.screen_scale), mirror='vertical' if self.is_2p else '')
             counter = str(max(0, self.balloon_total - self.balloon_count + 1))

scenes/song_select.py

@@ -45,6 +45,7 @@ class State:
     BROWSING = 0
     SONG_SELECTED = 1
     DIFF_SORTING = 2
+    SEARCHING = 3
 
 class SongSelectScreen(Screen):
     BOX_CENTER = 444
@@ -69,6 +70,7 @@ class SongSelectScreen(Screen):
         self.game_transition = None
         self.demo_song = None
         self.diff_sort_selector = None
+        self.search_box = None
         self.coin_overlay = CoinOverlay()
         self.allnet_indicator = AllNetIcon()
         self.indicator = Indicator(Indicator.State.SELECT)
@@ -124,7 +126,7 @@ class SongSelectScreen(Screen):
         self.screen_init = False
         self.reset_demo_music()
         current_item = self.navigator.get_current_item()
-        if isinstance(current_item, SongFile):
+        if isinstance(current_item, SongFile) and self.player_1.is_ready:
             self.finalize_song(current_item)
         self.player_1.nameplate.unload()
         if isinstance(current_item.box, SongBox) and current_item.box.yellow_box is not None:
@@ -167,6 +169,11 @@ class SongSelectScreen(Screen):
             self.diff_sort_selector = DiffSortSelect(self.navigator.diff_sort_statistics, self.navigator.diff_sort_diff, self.navigator.diff_sort_level)
             self.text_fade_in.start()
             self.text_fade_out.start()
+        elif action == "search":
+            self.state = State.SEARCHING
+            self.search_box = SearchBox()
+            self.text_fade_in.start()
+            self.text_fade_out.start()
         elif action == "select_song":
             current_song = self.navigator.get_current_item()
             if isinstance(current_song, Directory) and current_song.box.genre_index == GenreIndex.DAN:
@@ -225,6 +232,21 @@ class SongSelectScreen(Screen):
                     self.navigator.diff_sort_level = level
                 self.navigator.select_current_item()
 
+    def handle_input_search(self):
+        if self.search_box is None:
+            raise Exception("search box was not able to be created")
+
+        result = self.player_1.handle_input_search()
+        self.search_box.current_search = self.player_1.search_string
+
+        if result is not None:
+            self.state = State.BROWSING
+            self.search_box = None
+            self.text_fade_out.reset()
+            self.text_fade_in.reset()
+            self.navigator.current_search = result
+            self.navigator.select_current_item()
+
     def _cancel_selection(self):
         """Reset to browsing state"""
         self.player_1.selected_song = False
@@ -324,6 +346,9 @@ class SongSelectScreen(Screen):
         if self.diff_sort_selector is not None:
             self.diff_sort_selector.update(current_time)
 
+        if self.search_box is not None:
+            self.search_box.update(current_time)
+
         self.check_for_selection()
 
         for song in self.navigator.items:
@@ -356,7 +381,7 @@ class SongSelectScreen(Screen):
     def draw_players(self):
         self.player_1.draw(self.state)
 
-    def draw(self):
+    def draw_background(self):
         width = tex.textures['box']['background'].width
         genre_index = self.genre_index
         last_genre_index = self.last_genre_index
@@ -369,6 +394,26 @@ class SongSelectScreen(Screen):
             tex.draw_texture('box', 'background', frame=genre_index, x=i-self.background_move.attribute, fade=1 - self.background_fade_change.attribute)
         ray.end_shader_mode()
 
+    def draw_overlay(self):
+        self.indicator.draw(tex.skin_config['song_select_indicator'].x, tex.skin_config['song_select_indicator'].y)
+
+        tex.draw_texture('global', 'song_num_bg', fade=0.75, x=-(self.song_num.texture.width-127), x2=(self.song_num.texture.width-127))
+        self.song_num.draw(ray.BLACK, x=tex.skin_config["song_num"].x-self.song_num.texture.width, y=tex.skin_config["song_num"].y)
+        if self.state == State.BROWSING or self.state == State.DIFF_SORTING:
+            self.timer_browsing.draw()
+        elif self.state == State.SONG_SELECTED:
+            self.timer_selected.draw()
+        self.coin_overlay.draw()
+        if self.game_transition is not None:
+            self.game_transition.draw()
+
+        if self.dan_transition.is_started:
+            self.dan_transition.draw()
+        self.allnet_indicator.draw()
+
+    def draw(self):
+        self.draw_background()
+
         self.draw_background_diffs()
 
         if self.navigator.genre_bg is not None and self.state == State.BROWSING:
@@ -386,6 +431,9 @@ class SongSelectScreen(Screen):
         if self.diff_sort_selector is not None:
             self.diff_sort_selector.draw()
 
+        if self.search_box is not None:
+            self.search_box.draw()
+
         if (self.player_1.selected_song and self.state == State.SONG_SELECTED):
             tex.draw_texture('global', 'difficulty_select', fade=self.text_fade_in.attribute)
         elif self.state == State.DIFF_SORTING:
@@ -400,21 +448,7 @@ class SongSelectScreen(Screen):
             if isinstance(curr_item, SongFile):
                 curr_item.box.draw_score_history()
 
-        self.indicator.draw(tex.skin_config['song_select_indicator'].x, tex.skin_config['song_select_indicator'].y)
-
-        tex.draw_texture('global', 'song_num_bg', fade=0.75, x=-(self.song_num.texture.width-127), x2=(self.song_num.texture.width-127))
-        self.song_num.draw(ray.BLACK, x=tex.skin_config["song_num"].x-self.song_num.texture.width, y=tex.skin_config["song_num"].y)
-        if self.state == State.BROWSING or self.state == State.DIFF_SORTING:
-            self.timer_browsing.draw()
-        elif self.state == State.SONG_SELECTED:
-            self.timer_selected.draw()
-        self.coin_overlay.draw()
-        if self.game_transition is not None:
-            self.game_transition.draw()
-
-        if self.dan_transition.is_started:
-            self.dan_transition.draw()
-        self.allnet_indicator.draw()
+        self.draw_overlay()
 
 class SongSelectPlayer:
     def __init__(self, player_num: PlayerNum, text_fade_in):
@@ -428,6 +462,7 @@ class SongSelectPlayer:
         self.diff_select_move_right = False
         self.neiro_selector = None
         self.modifier_selector = None
+        self.search_string = ''
 
         # References to shared animations
         self.diff_selector_move_1 = tex.get_animation(26, is_copy=True)
@@ -511,6 +546,8 @@ class SongSelectPlayer:
                 return "go_back"
             elif isinstance(selected_item, Directory) and selected_item.collection == Directory.COLLECTIONS[3]:
                 return "diff_sort"
+            elif isinstance(selected_item, Directory) and selected_item.collection == Directory.COLLECTIONS[5]:
+                return "search"
             else:
                 return "select_song"
 
@@ -538,6 +575,20 @@ class SongSelectPlayer:
 
         return None
 
+    def handle_input_search(self):
+        if ray.is_key_pressed(ray.KeyboardKey.KEY_BACKSPACE):
+            self.search_string = self.search_string[:-1]
+        elif ray.is_key_pressed(ray.KeyboardKey.KEY_ENTER):
+            result = self.search_string
+            self.search_string = ''
+            return result
+        key = ray.get_char_pressed()
+
+        while key > 0:
+            self.search_string += chr(key)
+            key = ray.get_char_pressed()
+        return None
+
     def handle_input(self, state, screen):
         """Main input dispatcher. Delegates to state-specific handlers."""
         if self.is_voice_playing() or self.is_ready:
@@ -549,6 +600,8 @@ class SongSelectPlayer:
             screen.handle_input_selected()
         elif state == State.DIFF_SORTING:
             screen.handle_input_diff_sort()
+        elif state == State.SEARCHING:
+            screen.handle_input_search()
 
     def handle_input_selected(self, current_item):
         """Handle input for selecting difficulty. Returns 'cancel', 'confirm', or None"""
@@ -592,8 +645,6 @@ class SongSelectPlayer:
         if is_l_kat_pressed(self.player_num) or is_r_kat_pressed(self.player_num):
             audio.play_sound('kat', 'sound')
             selected_song = current_item
-            if isinstance(selected_song, Directory):
-                raise Exception("Directory was chosen instead of song")
             diffs = sorted(selected_song.tja.metadata.course_data)
             prev_diff = self.selected_difficulty
             ret_val = None
@@ -1027,12 +1078,37 @@ class DiffSortSelect:
         else:
             self.draw_diff_select()
 
+class SearchBox:
+    def __init__(self):
+        self.bg_resize = tex.get_animation(19)
+        self.diff_fade_in = tex.get_animation(20)
+        self.bg_resize.start()
+        self.diff_fade_in.start()
+        self.current_search = ''
+
+    def update(self, current_ms):
+        self.bg_resize.update(current_ms)
+        self.diff_fade_in.update(current_ms)
+
+    def draw(self):
+        ray.draw_rectangle(0, 0, tex.screen_width, tex.screen_height, ray.fade(ray.BLACK, 0.6))
+        tex.draw_texture('diff_sort', 'background', scale=self.bg_resize.attribute, center=True)
+        background = tex.textures['diff_sort']['background']
+        fade = self.diff_fade_in.attribute
+        text_box_width, text_box_height = 400 * tex.screen_scale, 60 * tex.screen_scale
+        x, y = background.width//2 + background.x[0] - text_box_width//2, background.height//2 + background.y[0] - text_box_height//2
+        text_box = ray.Rectangle(x, y, text_box_width, text_box_height)
+        ray.draw_rectangle_rec(text_box, ray.fade(ray.LIGHTGRAY, fade))
+        ray.draw_rectangle_lines(int(text_box.x), int(text_box.y), int(text_box.width), int(text_box.height), ray.fade(ray.DARKGRAY, fade))
+        text_size = ray.measure_text_ex(global_data.font, self.current_search, int(30 * tex.screen_scale), 1)
+        ray.draw_text_ex(global_data.font, self.current_search, ray.Vector2(x + text_box_width//2 - text_size.x//2, y + text_box_height//2 - text_size.y//2), int(30 * tex.screen_scale), 1, ray.BLACK)
+
 class NeiroSelector:
     """The menu for selecting the game hitsounds."""
     def __init__(self, player_num: PlayerNum):
         self.player_num = player_num
         self.selected_sound = global_data.hit_sound[self.player_num]
-        with open(Path("Sounds") / 'hit_sounds' / 'neiro_list.txt', encoding='utf-8-sig') as neiro_list:
+        with open(Path('Skins') / global_data.config["paths"]["skin"] / Path("Sounds") / 'hit_sounds' / 'neiro_list.txt', encoding='utf-8-sig') as neiro_list:
             self.sounds = neiro_list.readlines()
             self.sounds.append('無音')
         self.load_sound()
@@ -1053,9 +1129,9 @@ class NeiroSelector:
         if self.selected_sound == len(self.sounds):
             return
         if self.selected_sound == 0:
-            self.curr_sound = audio.load_sound(Path("Sounds") / "hit_sounds" / str(self.selected_sound) / "don.wav", 'hit_sound')
+            self.curr_sound = audio.load_sound(Path('Skins') / global_data.config["paths"]["skin"] / Path("Sounds") / "hit_sounds" / str(self.selected_sound) / "don.wav", 'hit_sound')
         else:
-            self.curr_sound = audio.load_sound(Path("Sounds") / "hit_sounds" / str(self.selected_sound) / "don.ogg", 'hit_sound')
+            self.curr_sound = audio.load_sound(Path('Skins') / global_data.config["paths"]["skin"] / Path("Sounds") / "hit_sounds" / str(self.selected_sound) / "don.ogg", 'hit_sound')
 
     def move_left(self):
         if self.move.is_started and not self.move.is_finished:
@@ -1147,16 +1223,23 @@ class ModifierSelector:
         "inverse": "mod_abekobe",
         "random": "mod_kimagure"
     }
-    NAME_MAP = {
+    NAME_MAP_JA = {
         "auto": "オート",
         "speed": "はやさ",
         "display": "ドロン",
         "inverse": "あべこべ",
         "random": "ランダム"
     }
+    NAME_MAP_EN = {
+        "auto": "Auto",
+        "speed": "Speed",
+        "display": "Display",
+        "inverse": "Inverse",
+        "random": "Random"
+    }
     def __init__(self, player_num: PlayerNum):
         self.player_num = player_num
-        self.mods = fields(Modifiers)
+        self.mods = fields(Modifiers)[:-1]
         self.current_mod_index = 0
         self.is_confirmed = False
         self.is_finished = False
@@ -1168,19 +1251,24 @@ class ModifierSelector:
         self.fade_sideways = tex.get_animation(32, is_copy=True)
         self.direction = -1
         audio.play_sound(f'voice_options_{self.player_num}p', 'sound')
-        self.text_name = [OutlinedText(ModifierSelector.NAME_MAP[mod.name], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5) for mod in self.mods]
-        self.text_true = OutlinedText('する', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
-        self.text_false = OutlinedText('しない', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+        self.language = global_data.config["general"]["language"]
+        if self.language == 'en':
+            name_map = ModifierSelector.NAME_MAP_EN
+        else:
+            name_map = ModifierSelector.NAME_MAP_JA
+        self.text_name = [OutlinedText(name_map[mod.name], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5) for mod in self.mods]
+        self.text_true = OutlinedText(tex.skin_config["modifier_text_true"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+        self.text_false = OutlinedText(tex.skin_config["modifier_text_false"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
         self.text_speed = OutlinedText(str(global_data.modifiers[self.player_num].speed), tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
-        self.text_kimagure = OutlinedText('きまぐれ', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
-        self.text_detarame = OutlinedText('でたらめ', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+        self.text_kimagure = OutlinedText(tex.skin_config["modifier_text_kimagure"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+        self.text_detarame = OutlinedText(tex.skin_config["modifier_text_detarame"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
 
         # Secondary text objects for animation
-        self.text_true_2 = OutlinedText('する', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
-        self.text_false_2 = OutlinedText('しない', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+        self.text_true_2 = OutlinedText(tex.skin_config["modifier_text_true"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+        self.text_false_2 = OutlinedText(tex.skin_config["modifier_text_false"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
         self.text_speed_2 = OutlinedText(str(global_data.modifiers[self.player_num].speed), tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
-        self.text_kimagure_2 = OutlinedText('きまぐれ', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
-        self.text_detarame_2 = OutlinedText('でたらめ', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+        self.text_kimagure_2 = OutlinedText(tex.skin_config["modifier_text_kimagure"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+        self.text_detarame_2 = OutlinedText(tex.skin_config["modifier_text_detarame"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
 
     def update(self, current_ms):
         self.is_finished = self.is_confirmed and self.move.is_finished
@@ -1221,20 +1309,20 @@ class ModifierSelector:
             if current_value:
                 self.text_true.unload()
                 self.text_true = self.text_true_2
-                self.text_true_2 = OutlinedText('する', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+                self.text_true_2 = OutlinedText(tex.skin_config["modifier_text_true"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
             else:
                 self.text_false.unload()
                 self.text_false = self.text_false_2
-                self.text_false_2 = OutlinedText('しない', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+                self.text_false_2 = OutlinedText(tex.skin_config["modifier_text_false"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
         elif current_mod.name == 'random':
             if current_value == 1:
                 self.text_kimagure.unload()
                 self.text_kimagure = self.text_kimagure_2
-                self.text_kimagure_2 = OutlinedText('きまぐれ', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+                self.text_kimagure_2 = OutlinedText(tex.skin_config["modifier_text_kimagure"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
             elif current_value == 2:
                 self.text_detarame.unload()
                 self.text_detarame = self.text_detarame_2
-                self.text_detarame_2 = OutlinedText('でたらめ', tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
+                self.text_detarame_2 = OutlinedText(tex.skin_config["modifier_text_detarame"].text[self.language], tex.skin_config["modifier_text"].font_size, ray.WHITE, outline_thickness=3.5)
 
     def left(self):
         if self.is_confirmed:

scenes/title.py

@@ -43,7 +43,7 @@ class TitleScreen(Screen):
         self.coin_overlay = CoinOverlay()
         self.allnet_indicator = AllNetIcon()
         self.entry_overlay = EntryOverlay()
-        self.hit_taiko_text = OutlinedText(global_tex.skin_config["hit_taiko_to_start"].text[global_data.config["general"]["language"]], tex.skin_config["hit_taiko_to_start"].font_size, ray.WHITE, spacing=5)
+        self.hit_taiko_text = OutlinedText(global_tex.skin_config["hit_taiko_to_start"].text[global_data.config["general"]["language"]], tex.skin_config["hit_taiko_to_start"].font_size, ray.WHITE, spacing=5, outline_thickness=4)
         self.fade_out = tex.get_animation(13)
         self.text_overlay_fade = tex.get_animation(14)
 

test/libs/test_animation.py

@@ -0,0 +1,695 @@
+import unittest
+from unittest.mock import patch
+
+from libs.animation import (
+    Animation,
+    BaseAnimation,
+    FadeAnimation,
+    MoveAnimation,
+    TextStretchAnimation,
+    TextureChangeAnimation,
+    TextureResizeAnimation,
+    parse_animations,
+)
+
+
+class TestBaseAnimation(unittest.TestCase):
+    """Test cases for the BaseAnimation class."""
+
+    @patch('libs.animation.get_current_ms')
+    @patch('libs.animation.global_data')
+    def setUp(self, mock_global_data, mock_get_ms):
+        """Set up test fixtures."""
+        mock_get_ms.return_value = 0.0
+        mock_global_data.input_locked = 0
+
+    @patch('libs.animation.get_current_ms')
+    def test_initialization(self, mock_get_ms):
+        """Test basic initialization of BaseAnimation."""
+        mock_get_ms.return_value = 100.0
+
+        anim = BaseAnimation(duration=1000.0, delay=100.0, loop=True, lock_input=True)
+
+        self.assertEqual(anim.duration, 1000.0)
+        self.assertEqual(anim.delay, 100.0)
+        self.assertEqual(anim.delay_saved, 100.0)
+        self.assertEqual(anim.start_ms, 100.0)
+        self.assertFalse(anim.is_finished)
+        self.assertEqual(anim.attribute, 0)
+        self.assertFalse(anim.is_started)
+        self.assertTrue(anim.loop)
+        self.assertTrue(anim.lock_input)
+
+    @patch('libs.animation.get_current_ms')
+    @patch('libs.animation.global_data')
+    def test_start(self, mock_global_data, mock_get_ms):
+        """Test starting an animation."""
+        mock_get_ms.return_value = 200.0
+        mock_global_data.input_locked = 0
+
+        anim = BaseAnimation(duration=1000.0, lock_input=True)
+        anim.start()
+
+        self.assertTrue(anim.is_started)
+        self.assertFalse(anim.is_finished)
+        self.assertEqual(mock_global_data.input_locked, 1)
+
+    @patch('libs.animation.get_current_ms')
+    @patch('libs.animation.global_data')
+    def test_restart(self, mock_global_data, mock_get_ms):
+        """Test restarting an animation."""
+        mock_get_ms.side_effect = [0.0, 500.0, 1000.0]
+        mock_global_data.input_locked = 0
+
+        anim = BaseAnimation(duration=1000.0, delay=100.0, lock_input=True)
+        anim.is_finished = True
+        anim.delay = 0.0
+
+        anim.restart()
+
+        self.assertEqual(anim.start_ms, 500.0)
+        self.assertFalse(anim.is_finished)
+        self.assertEqual(anim.delay, 100.0)
+        self.assertEqual(mock_global_data.input_locked, 1)
+
+    @patch('libs.animation.get_current_ms')
+    @patch('libs.animation.global_data')
+    def test_pause_unpause(self, mock_global_data, mock_get_ms):
+        """Test pausing and unpausing."""
+        mock_get_ms.return_value = 0.0
+        mock_global_data.input_locked = 1
+
+        anim = BaseAnimation(duration=1000.0, lock_input=True)
+        anim.is_started = True
+
+        anim.pause()
+        self.assertFalse(anim.is_started)
+        self.assertEqual(mock_global_data.input_locked, 0)
+
+        anim.unpause()
+        self.assertTrue(anim.is_started)
+        self.assertEqual(mock_global_data.input_locked, 1)
+
+    @patch('libs.animation.get_current_ms')
+    def test_loop_restarts(self, mock_get_ms):
+        """Test that looped animations restart when finished."""
+        mock_get_ms.side_effect = [0.0, 100.0]
+
+        anim = BaseAnimation(duration=1000.0, loop=True)
+        anim.is_finished = True
+
+        with patch.object(anim, 'restart') as mock_restart:
+            anim.update(100.0)
+            mock_restart.assert_called_once()
+
+    @patch('libs.animation.get_current_ms')
+    @patch('libs.animation.global_data')
+    def test_input_lock_unlock(self, mock_global_data, mock_get_ms):
+        """Test input locking mechanism."""
+        mock_get_ms.return_value = 0.0
+        mock_global_data.input_locked = 1
+
+        anim = BaseAnimation(duration=1000.0, lock_input=True)
+        anim.is_finished = True
+        anim.unlocked = False
+
+        anim.update(100.0)
+
+        self.assertTrue(anim.unlocked)
+        self.assertEqual(mock_global_data.input_locked, 0)
+
+    def test_easing_functions(self):
+        """Test easing functions produce expected values."""
+        anim = BaseAnimation(duration=1000.0)
+
+        # Test quadratic ease in
+        self.assertAlmostEqual(anim._ease_in(0.5, "quadratic"), 0.25)
+        self.assertAlmostEqual(anim._ease_in(1.0, "quadratic"), 1.0)
+
+        # Test cubic ease in
+        self.assertAlmostEqual(anim._ease_in(0.5, "cubic"), 0.125)
+
+        # Test exponential ease in
+        self.assertEqual(anim._ease_in(0.0, "exponential"), 0)
+
+        # Test quadratic ease out
+        self.assertAlmostEqual(anim._ease_out(0.5, "quadratic"), 0.75)
+
+        # Test cubic ease out
+        self.assertAlmostEqual(anim._ease_out(0.5, "cubic"), 0.875)
+
+        # Test exponential ease out
+        self.assertEqual(anim._ease_out(1.0, "exponential"), 1)
+
+
+class TestFadeAnimation(unittest.TestCase):
+    """Test cases for the FadeAnimation class."""
+
+    @patch('libs.animation.get_current_ms')
+    def test_initialization(self, mock_get_ms):
+        """Test fade animation initialization."""
+        mock_get_ms.return_value = 0.0
+
+        anim = FadeAnimation(
+            duration=1000.0,
+            initial_opacity=1.0,
+            final_opacity=0.0,
+            delay=100.0,
+            ease_in="quadratic"
+        )
+
+        self.assertEqual(anim.initial_opacity, 1.0)
+        self.assertEqual(anim.final_opacity, 0.0)
+        self.assertEqual(anim.attribute, 1.0)
+        self.assertEqual(anim.ease_in, "quadratic")
+
+    @patch('libs.animation.get_current_ms')
+    def test_fade_during_delay(self, mock_get_ms):
+        """Test that opacity stays at initial during delay."""
+        mock_get_ms.return_value = 0.0
+
+        anim = FadeAnimation(duration=1000.0, initial_opacity=1.0, final_opacity=0.0, delay=500.0)
+        anim.start()
+
+        anim.update(250.0)  # Within delay period
+
+        self.assertEqual(anim.attribute, 1.0)
+        self.assertFalse(anim.is_finished)
+
+    @patch('libs.animation.get_current_ms')
+    def test_fade_progression(self, mock_get_ms):
+        """Test fade progresses correctly."""
+        mock_get_ms.return_value = 0.0
+
+        anim = FadeAnimation(duration=1000.0, initial_opacity=1.0, final_opacity=0.0)
+        anim.start()
+
+        anim.update(500.0)  # Halfway through
+
+        self.assertAlmostEqual(anim.attribute, 0.5, places=2)
+        self.assertFalse(anim.is_finished)
+
+    @patch('libs.animation.get_current_ms')
+    def test_fade_completion(self, mock_get_ms):
+        """Test fade completes at final opacity."""
+        mock_get_ms.return_value = 0.0
+
+        anim = FadeAnimation(duration=1000.0, initial_opacity=1.0, final_opacity=0.0)
+        anim.start()
+
+        anim.update(1000.0)  # End of animation
+
+        self.assertEqual(anim.attribute, 0.0)
+        self.assertTrue(anim.is_finished)
+
+    @patch('libs.animation.get_current_ms')
+    def test_fade_with_reverse_delay(self, mock_get_ms):
+        """Test fade reverses after reverse_delay."""
+        mock_get_ms.return_value = 0.0
+
+        anim = FadeAnimation(
+            duration=1000.0,
+            initial_opacity=1.0,
+            final_opacity=0.0,
+            reverse_delay=200.0
+        )
+        anim.start()
+
+        anim.update(1000.0)  # Complete first fade
+
+        self.assertEqual(anim.attribute, 0.0)
+        self.assertTrue(anim.is_reversing)
+        self.assertEqual(anim.initial_opacity, 0.0)
+        self.assertEqual(anim.final_opacity, 1.0)
+        self.assertFalse(anim.is_finished)
+
+    @patch('libs.animation.get_current_ms')
+    def test_fade_with_easing(self, mock_get_ms):
+        """Test fade applies easing correctly."""
+        mock_get_ms.return_value = 0.0
+
+        anim = FadeAnimation(
+            duration=1000.0,
+            initial_opacity=0.0,
+            final_opacity=1.0,
+            ease_in="quadratic"
+        )
+        anim.start()
+
+        anim.update(500.0)  # Halfway
+
+        # With quadratic ease in, at 0.5 progress we should have 0.25
+        self.assertAlmostEqual(anim.attribute, 0.25, places=2)
+
+
+class TestMoveAnimation(unittest.TestCase):
+    """Test cases for the MoveAnimation class."""
+
+    @patch('libs.animation.get_current_ms')
+    def test_initialization(self, mock_get_ms):
+        """Test move animation initialization."""
+        mock_get_ms.return_value = 0.0
+
+        anim = MoveAnimation(
+            duration=1000.0,
+            start_position=0,
+            total_distance=100,
+            delay=50.0
+        )
+
+        self.assertEqual(anim.start_position, 0)
+        self.assertEqual(anim.total_distance, 100)
+        self.assertEqual(anim.delay, 50.0)
+
+    @patch('libs.animation.get_current_ms')
+    def test_move_during_delay(self, mock_get_ms):
+        """Test position stays at start during delay."""
+        mock_get_ms.return_value = 0.0
+
+        anim = MoveAnimation(duration=1000.0, start_position=50, total_distance=100, delay=200.0)
+        anim.start()
+
+        anim.update(100.0)  # Within delay
+
+        self.assertEqual(anim.attribute, 50)
+
+    @patch('libs.animation.get_current_ms')
+    def test_move_progression(self, mock_get_ms):
+        """Test move progresses correctly."""
+        mock_get_ms.return_value = 0.0
+
+        anim = MoveAnimation(duration=1000.0, start_position=0, total_distance=100)
+        anim.start()
+
+        anim.update(500.0)  # Halfway
+
+        self.assertAlmostEqual(anim.attribute, 50.0, places=2)
+
+    @patch('libs.animation.get_current_ms')
+    def test_move_completion(self, mock_get_ms):
+        """Test move completes at final position."""
+        mock_get_ms.return_value = 0.0
+
+        anim = MoveAnimation(duration=1000.0, start_position=0, total_distance=100)
+        anim.start()
+
+        anim.update(1000.0)
+
+        self.assertEqual(anim.attribute, 100)
+        self.assertTrue(anim.is_finished)
+
+    @patch('libs.animation.get_current_ms')
+    def test_move_with_reverse_delay(self, mock_get_ms):
+        """Test move reverses after reverse_delay."""
+        mock_get_ms.return_value = 0.0
+
+        anim = MoveAnimation(
+            duration=1000.0,
+            start_position=0,
+            total_distance=100,
+            reverse_delay=100.0
+        )
+        anim.start()
+
+        anim.update(1000.0)  # Complete first move
+
+        self.assertEqual(anim.start_position, 100)
+        self.assertEqual(anim.total_distance, -100)
+        self.assertIsNone(anim.reverse_delay)
+        self.assertFalse(anim.is_finished)
+
+    @patch('libs.animation.get_current_ms')
+    def test_move_with_easing(self, mock_get_ms):
+        """Test move applies easing."""
+        mock_get_ms.return_value = 0.0
+
+        anim = MoveAnimation(
+            duration=1000.0,
+            start_position=0,
+            total_distance=100,
+            ease_out="quadratic"
+        )
+        anim.start()
+
+        anim.update(500.0)
+
+        # With quadratic ease out, at 0.5 progress we should have 0.75
+        self.assertAlmostEqual(anim.attribute, 75.0, places=2)
+
+
+class TestTextureChangeAnimation(unittest.TestCase):
+    """Test cases for the TextureChangeAnimation class."""
+
+    @patch('libs.animation.get_current_ms')
+    def test_initialization(self, mock_get_ms):
+        """Test texture change animation initialization."""
+        mock_get_ms.return_value = 0.0
+
+        textures = [(0.0, 100.0, 0), (100.0, 200.0, 1), (200.0, 300.0, 2)]
+        anim = TextureChangeAnimation(duration=300.0, textures=textures)
+
+        self.assertEqual(anim.textures, textures)
+        self.assertEqual(anim.attribute, 0)  # First texture index
+
+    @patch('libs.animation.get_current_ms')
+    def test_texture_change_progression(self, mock_get_ms):
+        """Test texture changes at correct times."""
+        mock_get_ms.return_value = 0.0
+
+        textures = [(0.0, 100.0, 0), (100.0, 200.0, 1), (200.0, 300.0, 2)]
+        anim = TextureChangeAnimation(duration=300.0, textures=textures)
+        anim.start()
+
+        anim.update(50.0)
+        self.assertEqual(anim.attribute, 0)
+
+        anim.update(150.0)
+        self.assertEqual(anim.attribute, 1)
+
+        anim.update(250.0)
+        self.assertEqual(anim.attribute, 2)
+
+    @patch('libs.animation.get_current_ms')
+    def test_texture_change_completion(self, mock_get_ms):
+        """Test texture change completes."""
+        mock_get_ms.return_value = 0.0
+
+        textures = [(0.0, 100.0, 0), (100.0, 200.0, 1)]
+        anim = TextureChangeAnimation(duration=200.0, textures=textures)
+        anim.start()
+
+        anim.update(300.0)  # Past duration
+
+        self.assertTrue(anim.is_finished)
+
+    @patch('libs.animation.get_current_ms')
+    def test_texture_change_with_delay(self, mock_get_ms):
+        """Test texture change respects delay."""
+        mock_get_ms.return_value = 0.0
+
+        textures = [(0.0, 100.0, 0), (100.0, 200.0, 1)]
+        anim = TextureChangeAnimation(duration=200.0, textures=textures, delay=100.0)
+        anim.start()
+
+        anim.update(50.0)  # During delay
+        self.assertEqual(anim.attribute, 0)
+
+        anim.update(150.0)  # 50ms into animation (after delay)
+        self.assertEqual(anim.attribute, 0)
+
+
+class TestTextureResizeAnimation(unittest.TestCase):
+    """Test cases for the TextureResizeAnimation class."""
+
+    @patch('libs.animation.get_current_ms')
+    def test_initialization(self, mock_get_ms):
+        """Test texture resize initialization."""
+        mock_get_ms.return_value = 0.0
+
+        anim = TextureResizeAnimation(
+            duration=1000.0,
+            initial_size=1.0,
+            final_size=2.0
+        )
+
+        self.assertEqual(anim.initial_size, 1.0)
+        self.assertEqual(anim.final_size, 2.0)
+        self.assertEqual(anim.attribute, 1.0)
+
+    @patch('libs.animation.get_current_ms')
+    def test_resize_progression(self, mock_get_ms):
+        """Test resize progresses correctly."""
+        mock_get_ms.return_value = 0.0
+
+        anim = TextureResizeAnimation(duration=1000.0, initial_size=1.0, final_size=2.0)
+        anim.start()
+
+        anim.update(500.0)  # Halfway
+
+        self.assertAlmostEqual(anim.attribute, 1.5, places=2)
+
+    @patch('libs.animation.get_current_ms')
+    def test_resize_completion(self, mock_get_ms):
+        """Test resize completes."""
+        mock_get_ms.return_value = 0.0
+
+        anim = TextureResizeAnimation(duration=1000.0, initial_size=1.0, final_size=0.5)
+        anim.start()
+
+        anim.update(1000.0)
+
+        self.assertEqual(anim.attribute, 0.5)
+        self.assertTrue(anim.is_finished)
+
+
+class TestTextStretchAnimation(unittest.TestCase):
+    """Test cases for the TextStretchAnimation class."""
+
+    @patch('libs.animation.get_current_ms')
+    def test_stretch_phases(self, mock_get_ms):
+        """Test text stretch animation phases."""
+        mock_get_ms.return_value = 0.0
+
+        anim = TextStretchAnimation(duration=100.0)
+        anim.start()
+
+        # Phase 1: Growing
+        anim.update(50.0)
+        self.assertGreater(anim.attribute, 2)
+
+        # Phase 2: Shrinking back
+        anim.update(150.0)
+        self.assertGreater(anim.attribute, 0)
+
+        # Phase 3: Finished
+        anim.update(300.0)
+        self.assertEqual(anim.attribute, 0)
+        self.assertTrue(anim.is_finished)
+
+
+class TestAnimationFactory(unittest.TestCase):
+    """Test cases for the Animation factory class."""
+
+    def test_create_fade(self):
+        """Test factory creates fade animation."""
+        anim = Animation.create_fade(1000.0, initial_opacity=1.0, final_opacity=0.0)
+
+        self.assertIsInstance(anim, FadeAnimation)
+        self.assertEqual(anim.duration, 1000.0)
+        self.assertEqual(anim.initial_opacity, 1.0)
+
+    def test_create_move(self):
+        """Test factory creates move animation."""
+        anim = Animation.create_move(1000.0, start_position=0, total_distance=100)
+
+        self.assertIsInstance(anim, MoveAnimation)
+        self.assertEqual(anim.duration, 1000.0)
+        self.assertEqual(anim.total_distance, 100)
+
+    def test_create_texture_change(self):
+        """Test factory creates texture change animation."""
+        textures = [(0.0, 100.0, 0)]
+        anim = Animation.create_texture_change(1000.0, textures=textures)
+
+        self.assertIsInstance(anim, TextureChangeAnimation)
+        self.assertEqual(anim.textures, textures)
+
+    def test_create_texture_resize(self):
+        """Test factory creates texture resize animation."""
+        anim = Animation.create_texture_resize(1000.0, initial_size=1.0, final_size=2.0)
+
+        self.assertIsInstance(anim, TextureResizeAnimation)
+        self.assertEqual(anim.initial_size, 1.0)
+
+
+class TestParseAnimations(unittest.TestCase):
+    """Test cases for parse_animations function."""
+
+    def test_parse_basic_animation(self):
+        """Test parsing a simple animation."""
+        animation_json = [
+            {
+                "id": 1,
+                "type": "fade",
+                "duration": 1000.0,
+                "initial_opacity": 1.0,
+                "final_opacity": 0.0
+            }
+        ]
+
+        result = parse_animations(animation_json)
+
+        self.assertIn(1, result)
+        self.assertIsInstance(result[1], FadeAnimation)
+        self.assertEqual(result[1].duration, 1000.0)
+
+    def test_parse_multiple_animations(self):
+        """Test parsing multiple animations."""
+        animation_json = [
+            {"id": 1, "type": "fade", "duration": 1000.0},
+            {"id": 2, "type": "move", "duration": 500.0, "total_distance": 50}
+        ]
+
+        result = parse_animations(animation_json)
+
+        self.assertEqual(len(result), 2)
+        self.assertIsInstance(result[1], FadeAnimation)
+        self.assertIsInstance(result[2], MoveAnimation)
+
+    def test_parse_with_reference(self):
+        """Test parsing animations with references."""
+        animation_json = [
+            {"id": 1, "type": "fade", "duration": 1000.0, "initial_opacity": 1.0},
+            {
+                "id": 2,
+                "type": "fade",
+                "duration": {"reference_id": 1, "property": "duration"},
+                "initial_opacity": 0.5
+            }
+        ]
+
+        result = parse_animations(animation_json)
+
+        self.assertEqual(result[2].duration, 1000.0)
+        self.assertEqual(result[2].initial_opacity, 0.5)
+
+    def test_parse_with_reference_and_init_val(self):
+        """Test parsing with reference and init_val modifier."""
+        animation_json = [
+            {"id": 1, "type": "fade", "duration": 1000.0},
+            {
+                "id": 2,
+                "type": "fade",
+                "duration": {
+                    "reference_id": 1,
+                    "property": "duration",
+                    "init_val": 500.0
+                }
+            }
+        ]
+
+        result = parse_animations(animation_json)
+
+        self.assertEqual(result[2].duration, 1500.0)
+
+    def test_parse_missing_id_raises_error(self):
+        """Test that missing id raises exception."""
+        animation_json = [
+            {"type": "fade", "duration": 1000.0}
+        ]
+
+        with self.assertRaises(Exception) as context:
+            parse_animations(animation_json)
+        self.assertIn("requires id", str(context.exception))
+
+    def test_parse_missing_type_raises_error(self):
+        """Test that missing type raises exception."""
+        animation_json = [
+            {"id": 1, "duration": 1000.0}
+        ]
+
+        with self.assertRaises(Exception) as context:
+            parse_animations(animation_json)
+        self.assertIn("requires type", str(context.exception))
+
+    def test_parse_circular_reference_raises_error(self):
+        """Test that circular references are detected."""
+        animation_json = [
+            {
+                "id": 1,
+                "type": "fade",
+                "duration": {"reference_id": 2, "property": "duration"}
+            },
+            {
+                "id": 2,
+                "type": "fade",
+                "duration": {"reference_id": 1, "property": "duration"}
+            }
+        ]
+
+        with self.assertRaises(Exception) as context:
+            parse_animations(animation_json)
+        self.assertIn("Circular reference", str(context.exception))
+
+    def test_parse_unknown_type_raises_error(self):
+        """Test that unknown animation type raises exception."""
+        animation_json = [
+            {"id": 1, "type": "unknown_type", "duration": 1000.0}
+        ]
+
+        with self.assertRaises(Exception) as context:
+            parse_animations(animation_json)
+        self.assertIn("Unknown Animation type", str(context.exception))
+
+    def test_parse_missing_reference_property_raises_error(self):
+        """Test that missing reference property raises exception."""
+        animation_json = [
+            {"id": 1, "type": "fade", "duration": 1000.0},
+            {
+                "id": 2,
+                "type": "fade",
+                "duration": {"reference_id": 1}
+            }
+        ]
+
+        with self.assertRaises(Exception) as context:
+            parse_animations(animation_json)
+        self.assertIn("requires 'property'", str(context.exception))
+
+    def test_parse_nonexistent_reference_raises_error(self):
+        """Test that referencing nonexistent animation raises exception."""
+        animation_json = [
+            {
+                "id": 1,
+                "type": "fade",
+                "duration": {"reference_id": 999, "property": "duration"}
+            }
+        ]
+
+        with self.assertRaises(Exception) as context:
+            parse_animations(animation_json)
+        self.assertIn("not found", str(context.exception))
+
+    def test_parse_ignores_comments(self):
+        """Test that comments are ignored during parsing."""
+        animation_json = [
+            {
+                "id": 1,
+                "type": "fade",
+                "duration": 1000.0,
+                "comment": "This is a fade animation"
+            }
+        ]
+
+        result = parse_animations(animation_json)
+
+        self.assertIn(1, result)
+        self.assertIsInstance(result[1], FadeAnimation)
+
+    def test_parse_nested_references(self):
+        """Test parsing nested reference chains."""
+        animation_json = [
+            {"id": 1, "type": "fade", "duration": 1000.0},
+            {
+                "id": 2,
+                "type": "fade",
+                "duration": {"reference_id": 1, "property": "duration"}
+            },
+            {
+                "id": 3,
+                "type": "fade",
+                "duration": {
+                    "reference_id": 2,
+                    "property": "duration",
+                    "init_val": 500.0
+                }
+            }
+        ]
+
+        result = parse_animations(animation_json)
+
+        self.assertEqual(result[3].duration, 1500.0)
+
+
+if __name__ == '__main__':
+    unittest.main()

test/libs/test_audio.py

@@ -0,0 +1,518 @@
+import shutil
+import struct
+import unittest
+import wave
+from pathlib import Path
+from unittest.mock import patch
+
+from libs.audio import AudioEngine, audio
+from libs.config import VolumeConfig
+
+DEFAULT_CONFIG = VolumeConfig(sound=0.8, music=0.7, voice=0.6, hitsound=0.5, attract_mode=0.4)
+
+class TestAudioEngine(unittest.TestCase):
+    """Integration tests using the audio library."""
+
+    @classmethod
+    def setUpClass(cls):
+        """Set up test fixtures once for all tests."""
+        # Create temporary directory for test audio files
+        cls.test_dir = Path().cwd() / Path("temp")
+        cls.test_dir.mkdir(exist_ok=True)
+        cls.sounds_dir = Path(cls.test_dir) / "Sounds"
+        cls.sounds_dir.mkdir(exist_ok=True)
+
+        # Create test WAV files
+        cls._create_test_wav(cls.sounds_dir / "don.wav")
+        cls._create_test_wav(cls.sounds_dir / "ka.wav")
+        cls._create_test_wav(cls.sounds_dir / "test_sound.wav")
+        cls._create_test_wav(cls.sounds_dir / "test_music.wav", duration=2.0)
+
+        # Create screen sounds directory
+        cls.screen_sounds = cls.sounds_dir / "menu"
+        cls.screen_sounds.mkdir()
+        cls._create_test_wav(cls.screen_sounds / "click.wav")
+        cls._create_test_wav(cls.screen_sounds / "hover.wav")
+
+        # Create global sounds directory
+        cls.global_sounds = cls.sounds_dir / "global"
+        cls.global_sounds.mkdir()
+        cls._create_test_wav(cls.global_sounds / "confirm.wav")
+
+        cls.volume_presets = DEFAULT_CONFIG
+
+    @classmethod
+    def tearDownClass(cls):
+        """Clean up test files."""
+        shutil.rmtree(cls.test_dir)
+
+    @staticmethod
+    def _create_test_wav(filepath, duration=0.1, frequency=440):
+        """Create a simple test WAV file."""
+        sample_rate = 44100
+        num_samples = int(sample_rate * duration)
+
+        with wave.open(str(filepath), 'w') as wav_file:
+            wav_file.setnchannels(1)  # Mono
+            wav_file.setsampwidth(2)  # 16-bit
+            wav_file.setframerate(sample_rate)
+
+            for i in range(num_samples):
+                # Generate a simple sine wave
+                value = int(32767.0 * 0.3 *
+                           (i % (sample_rate // frequency)) /
+                           (sample_rate // frequency))
+                wav_file.writeframes(struct.pack('h', value))
+
+    def setUp(self):
+        """Set up each test."""
+        self.mock_config_path = self.sounds_dir
+        # Store original audio singleton state to avoid test pollution
+        self._original_audio_sounds_path = audio.sounds_path
+
+    def tearDown(self):
+        """Tear down each test."""
+        # Restore original audio singleton state
+        audio.sounds_path = self._original_audio_sounds_path
+        # Clear any sounds or music loaded during tests
+        if hasattr(audio, 'sounds') and isinstance(audio.sounds, dict):
+            audio.sounds.clear()
+        if hasattr(audio, 'music_streams') and isinstance(audio.music_streams, dict):
+            audio.music_streams.clear()
+
+    @patch('libs.audio.get_config')
+    def test_initialization(self, mock_config):
+        """Test AudioEngine initialization."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+
+        engine = AudioEngine(
+            device_type=0,
+            sample_rate=44100.0,
+            buffer_size=512,
+            volume_presets=self.volume_presets,
+            sounds_path=self.sounds_dir
+        )
+
+        self.assertEqual(engine.device_type, 0)
+        self.assertEqual(engine.target_sample_rate, 44100.0)
+        self.assertEqual(engine.buffer_size, 512)
+        self.assertEqual(engine.volume_presets, self.volume_presets)
+        self.assertFalse(engine.audio_device_ready)
+
+    @patch('libs.audio.get_config')
+    def test_init_and_close_audio_device(self, mock_config):
+        """Test initializing and closing audio device."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        # Initialize
+        success = engine.init_audio_device()
+        self.assertTrue(success)
+        self.assertTrue(engine.audio_device_ready)
+        self.assertTrue(engine.is_audio_device_ready())
+
+        # Close
+        engine.close_audio_device()
+        self.assertFalse(engine.audio_device_ready)
+
+    @patch('libs.audio.get_config')
+    def test_master_volume(self, mock_config):
+        """Test master volume control."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                # Set and get master volume
+                engine.set_master_volume(0.75)
+                volume = engine.get_master_volume()
+                self.assertAlmostEqual(volume, 0.75, places=2)
+
+                # Test clamping
+                engine.set_master_volume(1.5)
+                volume = engine.get_master_volume()
+                self.assertLessEqual(volume, 1.0)
+
+                engine.set_master_volume(-0.5)
+                volume = engine.get_master_volume()
+                self.assertGreaterEqual(volume, 0.0)
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_load_and_unload_sound(self, mock_config):
+        """Test loading and unloading sounds."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                # Load sound
+                sound_path = self.sounds_dir / "test_sound.wav"
+                sound_id = engine.load_sound(sound_path, "test")
+
+                self.assertEqual(sound_id, "test")
+                self.assertIn("test", engine.sounds)
+
+                # Unload sound
+                engine.unload_sound("test")
+                self.assertNotIn("test", engine.sounds)
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_load_nonexistent_sound(self, mock_config):
+        """Test loading a non-existent sound file."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                sound_id = engine.load_sound(Path("nonexistent.wav"), "bad")
+                self.assertEqual(sound_id, "")
+                self.assertNotIn("bad", engine.sounds)
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_play_and_stop_sound(self, mock_config):
+        """Test playing and stopping sounds."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                # Load and play sound
+                sound_path = self.sounds_dir / "test_sound.wav"
+                engine.load_sound(sound_path, "test")
+
+                engine.play_sound("test", "sound")
+
+                # Give it a moment to start
+                import time
+                time.sleep(0.05)
+
+                # Check if playing (might not be if audio is very short)
+                # Just verify no exceptions were raised
+                is_playing = engine.is_sound_playing("test")
+                self.assertIsInstance(is_playing, bool)
+
+                # Stop sound
+                engine.stop_sound("test")
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_play_don_and_kat(self, mock_config):
+        """Test playing the special don and kat sounds."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                # Play don
+                engine.play_sound("don", "sound")
+                is_playing = engine.is_sound_playing("don")
+                self.assertIsInstance(is_playing, bool)
+                engine.stop_sound("don")
+
+                # Play kat
+                engine.play_sound("kat", "sound")
+                is_playing = engine.is_sound_playing("kat")
+                self.assertIsInstance(is_playing, bool)
+                engine.stop_sound("kat")
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_sound_volume_control(self, mock_config):
+        """Test setting sound volume."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                sound_path = self.sounds_dir / "test_sound.wav"
+                engine.load_sound(sound_path, "test")
+
+                # Set volume (should not raise exception)
+                engine.set_sound_volume("test", 0.5)
+                engine.play_sound("test", "")
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_sound_pan_control(self, mock_config):
+        """Test setting sound pan."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                sound_path = self.sounds_dir / "test_sound.wav"
+                engine.load_sound(sound_path, "test")
+
+                # Set pan (should not raise exception)
+                engine.set_sound_pan("test", -0.5)  # Left
+                engine.set_sound_pan("test", 0.5)   # Right
+                engine.set_sound_pan("test", 0.0)   # Center
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_load_screen_sounds(self, mock_config):
+        """Test loading sounds for a screen."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                engine.load_screen_sounds("menu")
+
+                # Check that screen sounds were loaded
+                self.assertIn("click", engine.sounds)
+                self.assertIn("hover", engine.sounds)
+
+                # Check that global sounds were loaded
+                self.assertIn("confirm", engine.sounds)
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_unload_all_sounds(self, mock_config):
+        """Test unloading all sounds."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                # Load multiple sounds
+                engine.load_sound(self.sounds_dir / "test_sound.wav", "s1")
+                engine.load_sound(self.sounds_dir / "test_sound.wav", "s2")
+                engine.load_sound(self.sounds_dir / "test_sound.wav", "s3")
+
+                self.assertEqual(len(engine.sounds), 3)
+
+                # Unload all
+                engine.unload_all_sounds()
+                self.assertEqual(len(engine.sounds), 0)
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_load_and_play_music_stream(self, mock_config):
+        """Test loading and playing music streams."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                music_path = self.sounds_dir / "test_music.wav"
+                music_id = engine.load_music_stream(music_path, "bgm")
+                print(music_id)
+
+                self.assertEqual(music_id, "bgm")
+                self.assertIn("bgm", engine.music_streams)
+
+                # Play music
+                engine.play_music_stream("bgm", "music")
+
+                # Update music stream
+                engine.update_music_stream("bgm")
+
+                # Check if playing
+                is_playing = engine.is_music_stream_playing("bgm")
+                self.assertIsInstance(is_playing, bool)
+
+                # Stop music
+                engine.stop_music_stream("bgm")
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_music_time_functions(self, mock_config):
+        """Test getting music time length and played."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                music_path = self.sounds_dir / "test_music.wav"
+                music_file = engine.load_music_stream(music_path, "bgm")
+
+                # Get time length
+                length = engine.get_music_time_length(music_file)
+                self.assertGreater(length, 0.0)
+                self.assertLess(length, 10.0)  # Should be around 2 seconds
+
+                # Play and get time played
+                engine.play_music_stream(music_file, "music")
+                engine.update_music_stream(music_file)
+
+                import time
+                time.sleep(0.1)
+                engine.update_music_stream(music_file)
+
+                played = engine.get_music_time_played(music_file)
+                self.assertGreaterEqual(played, 0.0)
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_music_volume_control(self, mock_config):
+        """Test setting music volume."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                music_path = self.sounds_dir / "test_music.wav"
+                engine.load_music_stream(music_path, "bgm")
+
+                # Set volume (should not raise exception)
+                engine.set_music_volume("bgm", 0.6)
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_seek_music_stream(self, mock_config):
+        """Test seeking in music stream."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                music_path = self.sounds_dir / "test_music.wav"
+                engine.load_music_stream(music_path, "bgm")
+
+                # Seek to position (should not raise exception)
+                engine.seek_music_stream("bgm", 0.5)
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_unload_music_stream(self, mock_config):
+        """Test unloading music stream."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+
+        if engine.init_audio_device():
+            try:
+                music_path = self.sounds_dir / "test_music.wav"
+                engine.load_music_stream(music_path, "bgm")
+
+                self.assertIn("bgm", engine.music_streams)
+
+                engine.unload_music_stream("bgm")
+                self.assertNotIn("bgm", engine.music_streams)
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_unload_all_music(self, mock_config):
+        """Test unloading all music streams."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                # Load multiple music streams
+                music_path = self.sounds_dir / "test_music.wav"
+                engine.load_music_stream(music_path, "bgm1")
+                engine.load_music_stream(music_path, "bgm2")
+
+                self.assertEqual(len(engine.music_streams), 2)
+
+                engine.unload_all_music()
+                self.assertEqual(len(engine.music_streams), 0)
+
+            finally:
+                engine.close_audio_device()
+
+    @patch('libs.audio.get_config')
+    def test_host_api_functions(self, mock_config):
+        """Test host API query functions."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+        engine.init_audio_device()
+
+        # List host APIs (should not crash)
+        engine.list_host_apis()
+
+        # Get host API name
+        name = engine.get_host_api_name(0)
+        self.assertIsInstance(name, str)
+
+    @patch('libs.audio.get_config')
+    def test_full_lifecycle(self, mock_config):
+        """Test complete audio engine lifecycle."""
+        mock_config.return_value = {"paths": {"skin": f"{self.sounds_dir}"}}
+        engine = AudioEngine(0, 44100.0, 512, self.volume_presets, sounds_path=self.sounds_dir)
+
+
+        if engine.init_audio_device():
+            try:
+                # Load sounds and music
+                engine.load_sound(self.sounds_dir / "test_sound.wav", "sfx")
+                engine.load_music_stream(self.sounds_dir / "test_music.wav", "bgm")
+
+                # Set volumes
+                engine.set_master_volume(0.8)
+                engine.set_sound_volume("sfx", 0.7)
+                engine.set_music_volume("bgm", 0.6)
+
+                # Play audio
+                engine.play_sound("sfx", "sound")
+                engine.play_music_stream("bgm", "music")
+
+                import time
+                time.sleep(0.1)
+
+                # Update music
+                engine.update_music_stream("bgm")
+
+                # Stop
+                engine.stop_sound("sfx")
+                engine.stop_music_stream("bgm")
+
+                # Cleanup
+                engine.unload_sound("sfx")
+                engine.unload_music_stream("bgm")
+
+            finally:
+                engine.close_audio_device()
+
+
+if __name__ == '__main__':
+    # Run tests
+    unittest.main(verbosity=2)

test/libs/test_global_data.py

@@ -0,0 +1,551 @@
+import unittest
+from pathlib import Path
+from unittest.mock import Mock, patch
+
+from libs.global_data import (
+    Camera,
+    Crown,
+    DanResultData,
+    DanResultExam,
+    DanResultSong,
+    Difficulty,
+    GlobalData,
+    Modifiers,
+    PlayerNum,
+    ResultData,
+    ScoreMethod,
+    SessionData,
+    global_data,
+    reset_session,
+)
+
+
+class TestPlayerNum(unittest.TestCase):
+    """Test cases for the PlayerNum enum."""
+
+    def test_player_num_values(self):
+        """Test PlayerNum enum values."""
+        self.assertEqual(PlayerNum.ALL, 0)
+        self.assertEqual(PlayerNum.P1, 1)
+        self.assertEqual(PlayerNum.P2, 2)
+        self.assertEqual(PlayerNum.TWO_PLAYER, 3)
+        self.assertEqual(PlayerNum.DAN, 4)
+
+    def test_player_num_is_int_enum(self):
+        """Test that PlayerNum values are integers."""
+        self.assertIsInstance(PlayerNum.P1, int)
+        self.assertIsInstance(PlayerNum.P2, int)
+
+
+class TestScoreMethod(unittest.TestCase):
+    """Test cases for the ScoreMethod class."""
+
+    def test_score_method_constants(self):
+        """Test ScoreMethod constants."""
+        self.assertEqual(ScoreMethod.GEN3, "gen3")
+        self.assertEqual(ScoreMethod.SHINUCHI, "shinuchi")
+
+
+class TestDifficulty(unittest.TestCase):
+    """Test cases for the Difficulty enum."""
+
+    def test_difficulty_values(self):
+        """Test Difficulty enum values."""
+        self.assertEqual(Difficulty.EASY, 0)
+        self.assertEqual(Difficulty.NORMAL, 1)
+        self.assertEqual(Difficulty.HARD, 2)
+        self.assertEqual(Difficulty.ONI, 3)
+        self.assertEqual(Difficulty.URA, 4)
+        self.assertEqual(Difficulty.TOWER, 5)
+        self.assertEqual(Difficulty.DAN, 6)
+
+    def test_difficulty_ordering(self):
+        """Test that difficulty levels are ordered correctly."""
+        self.assertLess(Difficulty.EASY, Difficulty.NORMAL)
+        self.assertLess(Difficulty.NORMAL, Difficulty.HARD)
+        self.assertLess(Difficulty.HARD, Difficulty.ONI)
+        self.assertLess(Difficulty.ONI, Difficulty.URA)
+
+
+class TestCrown(unittest.TestCase):
+    """Test cases for the Crown enum."""
+
+    def test_crown_values(self):
+        """Test Crown enum values."""
+        self.assertEqual(Crown.NONE, 0)
+        self.assertEqual(Crown.CLEAR, 1)
+        self.assertEqual(Crown.FC, 2)
+        self.assertEqual(Crown.DFC, 3)
+
+    def test_crown_ordering(self):
+        """Test crown achievement ordering."""
+        self.assertLess(Crown.NONE, Crown.CLEAR)
+        self.assertLess(Crown.CLEAR, Crown.FC)
+        self.assertLess(Crown.FC, Crown.DFC)
+
+
+class TestModifiers(unittest.TestCase):
+    """Test cases for the Modifiers dataclass."""
+
+    def test_default_values(self):
+        """Test default modifier values."""
+        mods = Modifiers()
+
+        self.assertFalse(mods.auto)
+        self.assertEqual(mods.speed, 1.0)
+        self.assertFalse(mods.display)
+        self.assertFalse(mods.inverse)
+        self.assertEqual(mods.random, 0)
+
+    def test_custom_values(self):
+        """Test custom modifier values."""
+        mods = Modifiers(auto=True, speed=2.0, display=True, inverse=True, random=3)
+
+        self.assertTrue(mods.auto)
+        self.assertEqual(mods.speed, 2.0)
+        self.assertTrue(mods.display)
+        self.assertTrue(mods.inverse)
+        self.assertEqual(mods.random, 3)
+
+    def test_speed_multiplier(self):
+        """Test different speed multiplier values."""
+        mods1 = Modifiers(speed=0.5)
+        mods2 = Modifiers(speed=1.5)
+        mods3 = Modifiers(speed=3.0)
+
+        self.assertEqual(mods1.speed, 0.5)
+        self.assertEqual(mods2.speed, 1.5)
+        self.assertEqual(mods3.speed, 3.0)
+
+
+class TestDanResultSong(unittest.TestCase):
+    """Test cases for the DanResultSong dataclass."""
+
+    def test_default_values(self):
+        """Test default DanResultSong values."""
+        song = DanResultSong()
+
+        self.assertEqual(song.selected_difficulty, 0)
+        self.assertEqual(song.diff_level, 0)
+        self.assertEqual(song.song_title, "default_title")
+        self.assertEqual(song.genre_index, 0)
+        self.assertEqual(song.good, 0)
+        self.assertEqual(song.ok, 0)
+        self.assertEqual(song.bad, 0)
+        self.assertEqual(song.drumroll, 0)
+
+    def test_custom_values(self):
+        """Test custom DanResultSong values."""
+        song = DanResultSong(
+            selected_difficulty=3,
+            diff_level=10,
+            song_title="Test Song",
+            genre_index=5,
+            good=100,
+            ok=20,
+            bad=5,
+            drumroll=15
+        )
+
+        self.assertEqual(song.selected_difficulty, 3)
+        self.assertEqual(song.diff_level, 10)
+        self.assertEqual(song.song_title, "Test Song")
+        self.assertEqual(song.genre_index, 5)
+        self.assertEqual(song.good, 100)
+        self.assertEqual(song.ok, 20)
+        self.assertEqual(song.bad, 5)
+        self.assertEqual(song.drumroll, 15)
+
+
+class TestDanResultExam(unittest.TestCase):
+    """Test cases for the DanResultExam class."""
+
+    def test_default_values(self):
+        """Test default DanResultExam values."""
+        exam = DanResultExam()
+
+        self.assertEqual(exam.progress, 0)
+        self.assertEqual(exam.counter_value, 0)
+        self.assertEqual(exam.bar_texture, "exam_red")
+        self.assertFalse(exam.failed)
+
+    def test_custom_values(self):
+        """Test custom DanResultExam values."""
+        exam = DanResultExam()
+        exam.progress = 0.75
+        exam.counter_value = 150
+        exam.bar_texture = "exam_gold"
+        exam.failed = True
+
+        self.assertEqual(exam.progress, 0.75)
+        self.assertEqual(exam.counter_value, 150)
+        self.assertEqual(exam.bar_texture, "exam_gold")
+        self.assertTrue(exam.failed)
+
+
+class TestDanResultData(unittest.TestCase):
+    """Test cases for the DanResultData dataclass."""
+
+    def test_default_values(self):
+        """Test default DanResultData values."""
+        data = DanResultData()
+
+        self.assertEqual(data.dan_color, 0)
+        self.assertEqual(data.dan_title, "default_title")
+        self.assertEqual(data.score, 0)
+        self.assertEqual(data.gauge_length, 0.0)
+        self.assertEqual(data.max_combo, 0)
+        self.assertEqual(data.songs, [])
+        self.assertEqual(data.exams, [])
+        self.assertEqual(data.exam_data, [])
+
+    def test_with_songs(self):
+        """Test DanResultData with songs."""
+        song1 = DanResultSong(song_title="Song 1")
+        song2 = DanResultSong(song_title="Song 2")
+
+        data = DanResultData(songs=[song1, song2])
+
+        self.assertEqual(len(data.songs), 2)
+        self.assertEqual(data.songs[0].song_title, "Song 1")
+        self.assertEqual(data.songs[1].song_title, "Song 2")
+
+    def test_with_exam_data(self):
+        """Test DanResultData with exam data."""
+        exam1 = DanResultExam()
+        exam1.progress = 0.5
+        exam2 = DanResultExam()
+        exam2.progress = 1.0
+
+        data = DanResultData(exam_data=[exam1, exam2])
+
+        self.assertEqual(len(data.exam_data), 2)
+        self.assertEqual(data.exam_data[0].progress, 0.5)
+        self.assertEqual(data.exam_data[1].progress, 1.0)
+
+
+class TestResultData(unittest.TestCase):
+    """Test cases for the ResultData dataclass."""
+
+    def test_default_values(self):
+        """Test default ResultData values."""
+        data = ResultData()
+
+        self.assertEqual(data.score, 0)
+        self.assertEqual(data.good, 0)
+        self.assertEqual(data.ok, 0)
+        self.assertEqual(data.bad, 0)
+        self.assertEqual(data.max_combo, 0)
+        self.assertEqual(data.total_drumroll, 0)
+        self.assertEqual(data.gauge_length, 0)
+        self.assertEqual(data.prev_score, 0)
+
+    def test_custom_values(self):
+        """Test custom ResultData values."""
+        data = ResultData(
+            score=500000,
+            good=150,
+            ok=30,
+            bad=10,
+            max_combo=120,
+            total_drumroll=45,
+            gauge_length=0.85,
+            prev_score=450000
+        )
+
+        self.assertEqual(data.score, 500000)
+        self.assertEqual(data.good, 150)
+        self.assertEqual(data.ok, 30)
+        self.assertEqual(data.bad, 10)
+        self.assertEqual(data.max_combo, 120)
+        self.assertEqual(data.total_drumroll, 45)
+        self.assertEqual(data.gauge_length, 0.85)
+        self.assertEqual(data.prev_score, 450000)
+
+    def test_total_notes(self):
+        """Test calculating total notes from result data."""
+        data = ResultData(good=100, ok=50, bad=10)
+        total = data.good + data.ok + data.bad
+
+        self.assertEqual(total, 160)
+
+
+class TestSessionData(unittest.TestCase):
+    """Test cases for the SessionData dataclass."""
+
+    def test_default_values(self):
+        """Test default SessionData values."""
+        session = SessionData()
+
+        self.assertEqual(session.selected_song, Path())
+        self.assertEqual(session.song_hash, "")
+        self.assertEqual(session.selected_dan, [])
+        self.assertEqual(session.selected_dan_exam, [])
+        self.assertEqual(session.dan_color, 0)
+        self.assertEqual(session.selected_difficulty, 0)
+        self.assertEqual(session.song_title, "default_title")
+        self.assertEqual(session.genre_index, 0)
+        self.assertIsInstance(session.result_data, ResultData)
+        self.assertIsInstance(session.dan_result_data, DanResultData)
+
+    def test_custom_song_selection(self):
+        """Test custom song selection."""
+        song_path = Path("Songs/TestSong/song.tja")
+        session = SessionData(
+            selected_song=song_path,
+            song_hash="abc123",
+            selected_difficulty=3,
+            song_title="Test Song"
+        )
+
+        self.assertEqual(session.selected_song, song_path)
+        self.assertEqual(session.song_hash, "abc123")
+        self.assertEqual(session.selected_difficulty, 3)
+        self.assertEqual(session.song_title, "Test Song")
+
+    def test_dan_selection(self):
+        """Test dan course selection."""
+        dan_songs = [(Mock(), 0, 3, 10), (Mock(), 1, 3, 10)]
+        dan_exams = [Mock(), Mock(), Mock()]
+
+        session = SessionData(
+            selected_dan=dan_songs,
+            selected_dan_exam=dan_exams,
+            dan_color=2
+        )
+
+        self.assertEqual(len(session.selected_dan), 2)
+        self.assertEqual(len(session.selected_dan_exam), 3)
+        self.assertEqual(session.dan_color, 2)
+
+    def test_result_data_independence(self):
+        """Test that each session has independent result data."""
+        session1 = SessionData()
+        session2 = SessionData()
+
+        session1.result_data.score = 100000
+
+        self.assertEqual(session1.result_data.score, 100000)
+        self.assertEqual(session2.result_data.score, 0)
+
+
+class TestCamera(unittest.TestCase):
+    """Test cases for the Camera class."""
+
+    @patch('libs.global_data.ray')
+    def test_default_values(self, mock_ray):
+        """Test default Camera values."""
+        mock_ray.Vector2 = Mock(return_value=Mock())
+        mock_ray.BLACK = Mock()
+
+        camera = Camera()
+
+        self.assertEqual(camera.zoom, 1.0)
+        self.assertEqual(camera.h_scale, 1.0)
+        self.assertEqual(camera.v_scale, 1.0)
+        self.assertEqual(camera.rotation, 0.0)
+
+
+class TestGlobalData(unittest.TestCase):
+    """Test cases for the GlobalData dataclass."""
+
+    def test_default_values(self):
+        """Test default GlobalData values."""
+        data = GlobalData()
+
+        self.assertEqual(data.songs_played, 0)
+        self.assertIsInstance(data.camera, Camera)
+        self.assertEqual(data.song_hashes, {})
+        self.assertEqual(data.song_paths, {})
+        self.assertEqual(data.score_db, "")
+        self.assertEqual(data.song_progress, 0.0)
+        self.assertEqual(data.total_songs, 0)
+        self.assertEqual(data.hit_sound, [0, 0, 0])
+        self.assertEqual(data.player_num, PlayerNum.P1)
+        self.assertEqual(data.input_locked, 0)
+
+    def test_modifiers_list(self):
+        """Test that modifiers list has correct size."""
+        data = GlobalData()
+
+        self.assertEqual(len(data.modifiers), 3)
+        self.assertIsInstance(data.modifiers[0], Modifiers)
+        self.assertIsInstance(data.modifiers[1], Modifiers)
+        self.assertIsInstance(data.modifiers[2], Modifiers)
+
+    def test_session_data_list(self):
+        """Test that session data list has correct size."""
+        data = GlobalData()
+
+        self.assertEqual(len(data.session_data), 3)
+        self.assertIsInstance(data.session_data[0], SessionData)
+        self.assertIsInstance(data.session_data[1], SessionData)
+        self.assertIsInstance(data.session_data[2], SessionData)
+
+    def test_song_hashes_dict(self):
+        """Test song_hashes dictionary operations."""
+        data = GlobalData()
+
+        data.song_hashes["hash1"] = [{"path": "Songs/Song1"}]
+        data.song_hashes["hash2"] = [{"path": "Songs/Song2"}]
+
+        self.assertEqual(len(data.song_hashes), 2)
+        self.assertIn("hash1", data.song_hashes)
+        self.assertIn("hash2", data.song_hashes)
+
+    def test_song_paths_dict(self):
+        """Test song_paths dictionary operations."""
+        data = GlobalData()
+
+        path1 = Path("Songs/Song1/song.tja")
+        path2 = Path("Songs/Song2/song.tja")
+
+        data.song_paths[path1] = "hash1"
+        data.song_paths[path2] = "hash2"
+
+        self.assertEqual(len(data.song_paths), 2)
+        self.assertEqual(data.song_paths[path1], "hash1")
+        self.assertEqual(data.song_paths[path2], "hash2")
+
+    def test_input_locked_counter(self):
+        """Test input_locked as a counter."""
+        data = GlobalData()
+
+        self.assertEqual(data.input_locked, 0)
+
+        data.input_locked += 1
+        self.assertEqual(data.input_locked, 1)
+
+        data.input_locked += 1
+        self.assertEqual(data.input_locked, 2)
+
+        data.input_locked -= 1
+        self.assertEqual(data.input_locked, 1)
+
+    def test_songs_played_counter(self):
+        """Test songs_played counter."""
+        data = GlobalData()
+
+        self.assertEqual(data.songs_played, 0)
+
+        data.songs_played += 1
+        self.assertEqual(data.songs_played, 1)
+
+        data.songs_played += 1
+        self.assertEqual(data.songs_played, 2)
+
+    def test_hit_sound_indices(self):
+        """Test hit_sound indices list."""
+        data = GlobalData()
+
+        self.assertEqual(data.hit_sound, [0, 0, 0])
+
+        data.hit_sound[0] = 1
+        data.hit_sound[1] = 2
+        data.hit_sound[2] = 3
+
+        self.assertEqual(data.hit_sound, [1, 2, 3])
+
+
+class TestGlobalDataSingleton(unittest.TestCase):
+    """Test cases for the global_data singleton."""
+
+    def test_global_data_exists(self):
+        """Test that global_data instance exists."""
+        self.assertIsInstance(global_data, GlobalData)
+
+    def test_global_data_modifiable(self):
+        """Test that global_data can be modified."""
+        original_songs_played = global_data.songs_played
+        global_data.songs_played += 1
+
+        self.assertEqual(global_data.songs_played, original_songs_played + 1)
+
+        # Reset for other tests
+        global_data.songs_played = original_songs_played
+
+
+class TestResetSession(unittest.TestCase):
+    """Test cases for reset_session function."""
+
+    def test_reset_session_clears_p1_data(self):
+        """Test that reset_session clears player 1 data."""
+        global_data.session_data[1].result_data.score = 100000
+        global_data.session_data[1].song_title = "Test Song"
+
+        reset_session()
+
+        self.assertIsInstance(global_data.session_data[1], SessionData)
+        self.assertEqual(global_data.session_data[1].song_title, "default_title")
+
+    def test_reset_session_clears_p2_data(self):
+        """Test that reset_session clears player 2 data."""
+        global_data.session_data[2].result_data.score = 50000
+        global_data.session_data[2].selected_difficulty = 3
+
+        reset_session()
+
+        self.assertIsInstance(global_data.session_data[2], SessionData)
+        self.assertEqual(global_data.session_data[2].selected_difficulty, 0)
+
+    def test_reset_session_preserves_index_0(self):
+        """Test that reset_session doesn't affect index 0."""
+        original_data = global_data.session_data[0]
+        original_data.song_title = "Should Not Change"
+
+        reset_session()
+
+        self.assertEqual(global_data.session_data[0].song_title, "Should Not Change")
+
+    def test_reset_session_creates_new_instances(self):
+        """Test that reset_session creates new SessionData instances."""
+        old_p1_session = global_data.session_data[1]
+        old_p2_session = global_data.session_data[2]
+
+        reset_session()
+
+        self.assertIsNot(global_data.session_data[1], old_p1_session)
+        self.assertIsNot(global_data.session_data[2], old_p2_session)
+
+
+class TestDataclassIntegration(unittest.TestCase):
+    """Integration tests for dataclass interactions."""
+
+    def test_session_with_result_data(self):
+        """Test SessionData with populated ResultData."""
+        session = SessionData()
+        session.result_data.score = 750000
+        session.result_data.good = 200
+        session.result_data.max_combo = 180
+
+        self.assertEqual(session.result_data.score, 750000)
+        self.assertEqual(session.result_data.good, 200)
+        self.assertEqual(session.result_data.max_combo, 180)
+
+    def test_session_with_dan_result_data(self):
+        """Test SessionData with populated DanResultData."""
+        session = SessionData()
+        session.dan_result_data.dan_title = "10th Dan"
+        session.dan_result_data.dan_color = 5
+
+        song1 = DanResultSong(song_title="Dan Song 1")
+        song2 = DanResultSong(song_title="Dan Song 2")
+        session.dan_result_data.songs = [song1, song2]
+
+        self.assertEqual(session.dan_result_data.dan_title, "10th Dan")
+        self.assertEqual(len(session.dan_result_data.songs), 2)
+
+    def test_modifiers_independent_per_player(self):
+        """Test that each player has independent modifiers."""
+        data = GlobalData()
+
+        data.modifiers[1].speed = 2.0
+        data.modifiers[2].speed = 1.5
+
+        self.assertEqual(data.modifiers[1].speed, 2.0)
+        self.assertEqual(data.modifiers[2].speed, 1.5)
+        self.assertEqual(data.modifiers[0].speed, 1.0)
+
+
+if __name__ == '__main__':
+    unittest.main()

test/libs/test_global_objects.py

@@ -0,0 +1,289 @@
+import unittest
+from unittest.mock import Mock, patch
+
+from libs.global_data import PlayerNum
+from libs.global_objects import (
+    AllNetIcon,
+    CoinOverlay,
+    EntryOverlay,
+    Indicator,
+    Nameplate,
+    Timer,
+)
+
+
+class TestNameplate(unittest.TestCase):
+    """Test cases for the Nameplate class."""
+
+    def setUp(self):
+        """Set up test fixtures."""
+        # Mock global_tex and its methods
+        self.mock_tex = Mock()
+        self.mock_tex.skin_config = {
+            "nameplate_text_name": Mock(font_size=20, x=100, y=50, width=200),
+            "nameplate_text_title": Mock(font_size=16, x=100, y=80, width=150),
+            "nameplate_title_offset": Mock(x=10),
+            "nameplate_dan_offset": Mock(x=20)
+        }
+        self.mock_tex.get_animation = Mock(return_value=Mock(start=Mock(), update=Mock(), is_finished=False))
+
+    @patch('libs.global_objects.global_tex')
+    @patch('libs.global_objects.OutlinedText')
+    def test_initialization_basic(self, mock_text, mock_global_tex):
+        """Test basic nameplate initialization."""
+        mock_global_tex.skin_config = self.mock_tex.skin_config
+
+        nameplate = Nameplate("TestPlayer", "TestTitle", PlayerNum.P1, 5, False, False, 0)
+
+        self.assertEqual(nameplate.dan_index, 5)
+        self.assertEqual(nameplate.player_num, 1)
+        self.assertFalse(nameplate.is_gold)
+        self.assertFalse(nameplate.is_rainbow)
+        self.assertEqual(nameplate.title_bg, 0)
+
+    @patch('libs.global_objects.global_tex')
+    @patch('libs.global_objects.OutlinedText')
+    def test_initialization_rainbow(self, mock_text, mock_global_tex):
+        """Test rainbow nameplate initialization."""
+        mock_global_tex.skin_config = self.mock_tex.skin_config
+        mock_animation = Mock()
+        mock_global_tex.get_animation.return_value = mock_animation
+
+        nameplate = Nameplate("Player", "Title", PlayerNum.P1, 3, False, True, 0)
+
+        self.assertTrue(nameplate.is_rainbow)
+        mock_global_tex.get_animation.assert_called_once_with(12)
+        mock_animation.start.assert_called_once()
+
+    @patch('libs.global_objects.global_tex')
+    def test_update_rainbow_animation(self, mock_global_tex):
+        """Test rainbow animation update logic."""
+        mock_animation = Mock(is_finished=False, update=Mock())
+        mock_global_tex.get_animation.return_value = mock_animation
+        mock_global_tex.skin_config = self.mock_tex.skin_config
+
+        with patch('libs.global_objects.OutlinedText'):
+            nameplate = Nameplate("P", "T", PlayerNum.P1, 0, False, True, 0)
+            nameplate.update(1000.0)
+
+            mock_animation.update.assert_called_once_with(1000.0)
+
+    @patch('libs.global_objects.global_tex')
+    def test_update_rainbow_restart(self, mock_global_tex):
+        """Test rainbow animation restarts when finished."""
+        mock_animation = Mock(is_finished=True, update=Mock(), restart=Mock())
+        mock_global_tex.get_animation.return_value = mock_animation
+        mock_global_tex.skin_config = self.mock_tex.skin_config
+
+        with patch('libs.global_objects.OutlinedText'):
+            nameplate = Nameplate("P", "T", PlayerNum.P1, 0, False, True, 0)
+            nameplate.update(1000.0)
+
+            mock_animation.restart.assert_called_once()
+
+    @patch('libs.global_objects.global_tex')
+    def test_unload(self, mock_global_tex):
+        """Test nameplate resource cleanup."""
+        mock_global_tex.skin_config = self.mock_tex.skin_config
+
+        with patch('libs.global_objects.OutlinedText') as mock_text:
+            mock_name = Mock()
+            mock_title = Mock()
+            mock_text.side_effect = [mock_name, mock_title]
+
+            nameplate = Nameplate("P", "T", PlayerNum.P1, 0, False, False, 0)
+            nameplate.unload()
+
+            mock_name.unload.assert_called_once()
+            mock_title.unload.assert_called_once()
+
+
+class TestIndicator(unittest.TestCase):
+    """Test cases for the Indicator class."""
+
+    @patch('libs.global_objects.global_tex')
+    @patch('libs.global_objects.OutlinedText')
+    def test_initialization(self, mock_text, mock_global_tex):
+        """Test indicator initialization with different states."""
+        mock_global_tex.get_animation.return_value = Mock()
+        mock_global_tex.skin_config = {"indicator_text": Mock(text={"en": "Select"}, font_size=20)}
+
+        with patch('libs.global_objects.global_data') as mock_data:
+            mock_data.config = {"general": {"language": "en"}}
+
+            indicator = Indicator(Indicator.State.SELECT)
+
+            self.assertEqual(indicator.state, Indicator.State.SELECT)
+            self.assertEqual(mock_global_tex.get_animation.call_count, 3)
+
+    @patch('libs.global_objects.global_tex')
+    def test_update_animations(self, mock_global_tex):
+        """Test that all animations update correctly."""
+        mock_don_fade = Mock()
+        mock_arrow_move = Mock()
+        mock_arrow_fade = Mock()
+        mock_global_tex.get_animation.side_effect = [mock_don_fade, mock_arrow_move, mock_arrow_fade]
+        mock_global_tex.skin_config = {"indicator_text": Mock(text={"en": "S"}, font_size=20)}
+
+        with patch('libs.global_objects.global_data.config', {"general": {"language": "en"}}):
+            with patch('libs.global_objects.OutlinedText'):
+                indicator = Indicator(Indicator.State.SKIP)
+                indicator.update(500.0)
+
+                mock_don_fade.update.assert_called_once_with(500.0)
+                mock_arrow_move.update.assert_called_once_with(500.0)
+                mock_arrow_fade.update.assert_called_once_with(500.0)
+
+
+class TestTimer(unittest.TestCase):
+    """Test cases for the Timer class."""
+
+    @patch('libs.global_objects.get_config')
+    @patch('libs.global_objects.global_tex')
+    def test_initialization(self, mock_tex, mock_config):
+        """Test timer initialization."""
+        mock_config.return_value = {"general": {"timer_frozen": False}}
+        mock_tex.get_animation.return_value = Mock()
+        mock_func = Mock()
+
+        timer = Timer(30, 0.0, mock_func)
+
+        self.assertEqual(timer.time, 30)
+        self.assertEqual(timer.counter, "30")
+        self.assertFalse(timer.is_finished)
+        self.assertFalse(timer.is_frozen)
+
+    @patch('libs.global_objects.audio')
+    @patch('libs.global_objects.get_config')
+    @patch('libs.global_objects.global_tex')
+    def test_countdown_normal(self, mock_tex, mock_config, mock_audio):
+        """Test normal countdown behavior."""
+        mock_config.return_value = {"general": {"timer_frozen": False}}
+        mock_tex.get_animation.return_value = Mock(update=Mock(), start=Mock())
+        mock_func = Mock()
+
+        timer = Timer(15, 0.0, mock_func)
+        timer.update(1000.0)
+
+        self.assertEqual(timer.time, 14)
+        self.assertEqual(timer.counter, "14")
+
+    @patch('libs.global_objects.audio')
+    @patch('libs.global_objects.get_config')
+    @patch('libs.global_objects.global_tex')
+    def test_countdown_below_ten(self, mock_tex, mock_config, mock_audio):
+        """Test countdown triggers animations below 10."""
+        mock_config.return_value = {"general": {"timer_frozen": False}}
+        mock_animation = Mock(update=Mock(), start=Mock())
+        mock_tex.get_animation.return_value = mock_animation
+        mock_func = Mock()
+
+        timer = Timer(10, 0.0, mock_func)
+        timer.update(1000.0)
+
+        self.assertEqual(timer.time, 9)
+        mock_audio.play_sound.assert_called_with('timer_blip', 'sound')
+        self.assertEqual(mock_animation.start.call_count, 3)
+
+    @patch('libs.global_objects.audio')
+    @patch('libs.global_objects.get_config')
+    @patch('libs.global_objects.global_tex')
+    def test_voice_triggers(self, mock_tex, mock_config, mock_audio):
+        """Test voice announcements at specific times."""
+        mock_config.return_value = {"general": {"timer_frozen": False}}
+        mock_tex.get_animation.return_value = Mock(update=Mock(), start=Mock())
+        mock_func = Mock()
+
+        # Test 10 second voice
+        timer = Timer(11, 0.0, mock_func)
+        timer.update(1000.0)
+        mock_audio.play_sound.assert_called_with('voice_timer_10', 'voice')
+
+        # Test 5 second voice
+        timer = Timer(6, 0.0, mock_func)
+        timer.update(1000.0)
+        mock_audio.play_sound.assert_called_with('voice_timer_5', 'voice')
+
+    @patch('libs.global_objects.audio')
+    @patch('libs.global_objects.get_config')
+    @patch('libs.global_objects.global_tex')
+    def test_timer_finish_callback(self, mock_tex, mock_config, mock_audio):
+        """Test callback is triggered when timer reaches zero."""
+        mock_config.return_value = {"general": {"timer_frozen": False}}
+        mock_tex.get_animation.return_value = Mock(update=Mock(), start=Mock())
+        mock_audio.is_sound_playing.return_value = False
+        mock_func = Mock()
+
+        timer = Timer(1, 0.0, mock_func)
+        timer.update(1000.0)
+        timer.update(2000.0)
+
+        mock_func.assert_called_once()
+        self.assertTrue(timer.is_finished)
+
+    @patch('libs.global_objects.get_config')
+    @patch('libs.global_objects.global_tex')
+    def test_timer_frozen(self, mock_tex, mock_config):
+        """Test frozen timer doesn't count down."""
+        mock_config.return_value = {"general": {"timer_frozen": True}}
+        mock_tex.get_animation.return_value = Mock(update=Mock())
+        mock_func = Mock()
+
+        timer = Timer(10, 0.0, mock_func)
+        initial_time = timer.time
+        timer.update(1000.0)
+
+        self.assertEqual(timer.time, initial_time)
+
+
+class TestCoinOverlay(unittest.TestCase):
+    """Test cases for the CoinOverlay class."""
+
+    @patch('libs.global_objects.global_tex')
+    @patch('libs.global_objects.global_data')
+    @patch('libs.global_objects.OutlinedText')
+    def test_initialization(self, mock_text, mock_data, mock_tex):
+        """Test coin overlay initialization."""
+        mock_tex.skin_config = {
+            "free_play": Mock(text={"en": "Free Play"}, font_size=24, y=100)
+        }
+        mock_data.config = {"general": {"language": "en"}}
+
+        _ = CoinOverlay()
+
+        mock_text.assert_called_once()
+
+
+class TestAllNetIcon(unittest.TestCase):
+    """Test cases for the AllNetIcon class."""
+
+    @patch('libs.global_objects.get_config')
+    def test_initialization_offline(self, mock_config):
+        """Test AllNet icon initializes offline."""
+        mock_config.return_value = {"general": {"fake_online": False}}
+
+        icon = AllNetIcon()
+
+        self.assertFalse(icon.online)
+
+    @patch('libs.global_objects.get_config')
+    def test_initialization_online(self, mock_config):
+        """Test AllNet icon initializes online."""
+        mock_config.return_value = {"general": {"fake_online": True}}
+
+        icon = AllNetIcon()
+
+        self.assertTrue(icon.online)
+
+
+class TestEntryOverlay(unittest.TestCase):
+    """Test cases for the EntryOverlay class."""
+
+    @patch('libs.global_objects.get_config')
+    def test_initialization(self, mock_config):
+        """Test entry overlay initialization."""
+        mock_config.return_value = {"general": {"fake_online": False}}
+
+        overlay = EntryOverlay()
+
+        self.assertFalse(overlay.online)

test/libs/test_screen.py

@@ -0,0 +1,333 @@
+import unittest
+from unittest.mock import Mock, patch
+
+from libs.screen import Screen
+
+
+class TestScreen(unittest.TestCase):
+    """Test cases for the Screen class."""
+
+    def setUp(self):
+        """Set up test fixtures."""
+        self.screen_name = "test_screen"
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_initialization(self, mock_audio, mock_tex):
+        """Test screen initialization."""
+        screen = Screen(self.screen_name)
+
+        self.assertEqual(screen.screen_name, self.screen_name)
+        self.assertFalse(screen.screen_init)
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_on_screen_start(self, mock_audio, mock_tex):
+        """Test on_screen_start loads textures and sounds."""
+        screen = Screen(self.screen_name)
+        screen.on_screen_start()
+
+        mock_tex.load_screen_textures.assert_called_once_with(self.screen_name)
+        mock_audio.load_screen_sounds.assert_called_once_with(self.screen_name)
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_do_screen_start_first_call(self, mock_audio, mock_tex):
+        """Test _do_screen_start initializes screen on first call."""
+        screen = Screen(self.screen_name)
+
+        self.assertFalse(screen.screen_init)
+        screen._do_screen_start()
+
+        self.assertTrue(screen.screen_init)
+        mock_tex.load_screen_textures.assert_called_once_with(self.screen_name)
+        mock_audio.load_screen_sounds.assert_called_once_with(self.screen_name)
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_do_screen_start_subsequent_calls(self, mock_audio, mock_tex):
+        """Test _do_screen_start doesn't reinitialize on subsequent calls."""
+        screen = Screen(self.screen_name)
+
+        screen._do_screen_start()
+        screen._do_screen_start()
+        screen._do_screen_start()
+
+        # Should only be called once despite multiple calls
+        mock_tex.load_screen_textures.assert_called_once()
+        mock_audio.load_screen_sounds.assert_called_once()
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_on_screen_end(self, mock_audio, mock_tex):
+        """Test on_screen_end unloads resources and returns next screen."""
+        screen = Screen(self.screen_name)
+        screen.screen_init = True
+
+        next_screen = "next_screen"
+        result = screen.on_screen_end(next_screen)
+
+        self.assertEqual(result, next_screen)
+        self.assertFalse(screen.screen_init)
+        mock_audio.unload_all_sounds.assert_called_once()
+        mock_audio.unload_all_music.assert_called_once()
+        mock_tex.unload_textures.assert_called_once()
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_on_screen_end_unload_order(self, mock_audio, mock_tex):
+        """Test that resources are unloaded in correct order."""
+        screen = Screen(self.screen_name)
+        screen.screen_init = True
+
+        manager = Mock()
+        manager.attach_mock(mock_audio.unload_all_sounds, 'unload_sounds')
+        manager.attach_mock(mock_audio.unload_all_music, 'unload_music')
+        manager.attach_mock(mock_tex.unload_textures, 'unload_textures')
+
+        screen.on_screen_end("next")
+
+        # Verify order: sounds, music, then textures
+        calls = manager.mock_calls
+        self.assertEqual(calls[0][0], 'unload_sounds')
+        self.assertEqual(calls[1][0], 'unload_music')
+        self.assertEqual(calls[2][0], 'unload_textures')
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_update_not_initialized(self, mock_audio, mock_tex):
+        """Test update initializes screen if not already initialized."""
+        screen = Screen(self.screen_name)
+
+        self.assertFalse(screen.screen_init)
+        screen.update()
+
+        self.assertTrue(screen.screen_init)
+        mock_tex.load_screen_textures.assert_called_once()
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_update_already_initialized(self, mock_audio, mock_tex):
+        """Test update doesn't reinitialize if already initialized."""
+        screen = Screen(self.screen_name)
+        screen.screen_init = True
+
+        screen.update()
+
+        # Should not load again
+        mock_tex.load_screen_textures.assert_not_called()
+        mock_audio.load_screen_sounds.assert_not_called()
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_update_returns_value(self, mock_audio, mock_tex):
+        """Test update returns value from _do_screen_start."""
+        screen = Screen(self.screen_name)
+
+        with patch.object(screen, '_do_screen_start', return_value="test_value"):
+            result = screen.update()
+            self.assertEqual(result, "test_value")
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_draw_default_implementation(self, mock_audio, mock_tex):
+        """Test draw has empty default implementation."""
+        screen = Screen(self.screen_name)
+
+        # Should not raise any errors
+        screen.draw()
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_do_draw_when_initialized(self, mock_audio, mock_tex):
+        """Test _do_draw calls draw when screen is initialized."""
+        screen = Screen(self.screen_name)
+        screen.screen_init = True
+
+        with patch.object(screen, 'draw') as mock_draw:
+            screen._do_draw()
+            mock_draw.assert_called_once()
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_do_draw_when_not_initialized(self, mock_audio, mock_tex):
+        """Test _do_draw doesn't call draw when screen is not initialized."""
+        screen = Screen(self.screen_name)
+        screen.screen_init = False
+
+        with patch.object(screen, 'draw') as mock_draw:
+            screen._do_draw()
+            mock_draw.assert_not_called()
+
+
+class TestScreenSubclass(unittest.TestCase):
+    """Test cases for Screen subclass behavior."""
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_subclass_custom_on_screen_start(self, mock_audio, mock_tex):
+        """Test that subclass can override on_screen_start."""
+        class CustomScreen(Screen):
+            def __init__(self, name):
+                super().__init__(name)
+                self.custom_init_called = False
+
+            def on_screen_start(self):
+                super().on_screen_start()
+                self.custom_init_called = True
+
+        screen = CustomScreen("custom")
+        screen.on_screen_start()
+
+        self.assertTrue(screen.custom_init_called)
+        mock_tex.load_screen_textures.assert_called_once_with("custom")
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_subclass_custom_update(self, mock_audio, mock_tex):
+        """Test that subclass can override update."""
+        class CustomScreen(Screen):
+            def __init__(self, name):
+                super().__init__(name)
+                self.update_count = 0
+
+            def update(self):
+                result = super().update()
+                self.update_count += 1
+                return result
+
+        screen = CustomScreen("custom")
+        screen.update()
+        screen.update()
+
+        self.assertEqual(screen.update_count, 2)
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_subclass_custom_draw(self, mock_audio, mock_tex):
+        """Test that subclass can override draw."""
+        class CustomScreen(Screen):
+            def __init__(self, name):
+                super().__init__(name)
+                self.draw_called = False
+
+            def draw(self):
+                self.draw_called = True
+
+        screen = CustomScreen("custom")
+        screen.screen_init = True
+        screen._do_draw()
+
+        self.assertTrue(screen.draw_called)
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_subclass_custom_on_screen_end(self, mock_audio, mock_tex):
+        """Test that subclass can override on_screen_end."""
+        class CustomScreen(Screen):
+            def __init__(self, name):
+                super().__init__(name)
+                self.cleanup_called = False
+
+            def on_screen_end(self, next_screen):
+                self.cleanup_called = True
+                return super().on_screen_end(next_screen)
+
+        screen = CustomScreen("custom")
+        screen.screen_init = True
+        result = screen.on_screen_end("next")
+
+        self.assertTrue(screen.cleanup_called)
+        self.assertEqual(result, "next")
+
+
+class TestScreenLifecycle(unittest.TestCase):
+    """Test cases for complete screen lifecycle."""
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_full_lifecycle(self, mock_audio, mock_tex):
+        """Test complete screen lifecycle from start to end."""
+        screen = Screen("lifecycle_test")
+
+        # Initial state
+        self.assertFalse(screen.screen_init)
+
+        # Start screen
+        screen.update()
+        self.assertTrue(screen.screen_init)
+        mock_tex.load_screen_textures.assert_called_once_with("lifecycle_test")
+        mock_audio.load_screen_sounds.assert_called_once_with("lifecycle_test")
+
+        # Multiple updates don't reinitialize
+        screen.update()
+        screen.update()
+        self.assertEqual(mock_tex.load_screen_textures.call_count, 1)
+
+        # Draw while initialized
+        with patch.object(screen, 'draw') as mock_draw:
+            screen._do_draw()
+            mock_draw.assert_called_once()
+
+        # End screen
+        result = screen.on_screen_end("next_screen")
+        self.assertEqual(result, "next_screen")
+        self.assertFalse(screen.screen_init)
+        mock_audio.unload_all_sounds.assert_called_once()
+        mock_audio.unload_all_music.assert_called_once()
+        mock_tex.unload_textures.assert_called_once()
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_multiple_screen_transitions(self, mock_audio, mock_tex):
+        """Test transitioning between multiple screens."""
+        screen1 = Screen("screen1")
+        screen2 = Screen("screen2")
+        screen3 = Screen("screen3")
+
+        # Initialize first screen
+        screen1.update()
+        self.assertTrue(screen1.screen_init)
+
+        # Transition to second screen
+        next_name = screen1.on_screen_end("screen2")
+        self.assertEqual(next_name, "screen2")
+        self.assertFalse(screen1.screen_init)
+
+        screen2.update()
+        self.assertTrue(screen2.screen_init)
+
+        # Transition to third screen
+        next_name = screen2.on_screen_end("screen3")
+        self.assertEqual(next_name, "screen3")
+        self.assertFalse(screen2.screen_init)
+
+        screen3.update()
+        self.assertTrue(screen3.screen_init)
+
+    @patch('libs.screen.tex')
+    @patch('libs.screen.audio')
+    def test_screen_reinitialize_after_end(self, mock_audio, mock_tex):
+        """Test that screen can be reinitialized after ending."""
+        screen = Screen("reinit_test")
+
+        # First initialization
+        screen.update()
+        self.assertTrue(screen.screen_init)
+
+        # End screen
+        screen.on_screen_end("next")
+        self.assertFalse(screen.screen_init)
+
+        # Reinitialize
+        mock_tex.load_screen_textures.reset_mock()
+        mock_audio.load_screen_sounds.reset_mock()
+
+        screen.update()
+        self.assertTrue(screen.screen_init)
+        mock_tex.load_screen_textures.assert_called_once()
+        mock_audio.load_screen_sounds.assert_called_once()
+
+
+if __name__ == '__main__':
+    unittest.main()

test/libs/test_texture.py

@@ -0,0 +1,289 @@
+import unittest
+from unittest.mock import Mock, patch
+
+from libs.texture import (
+    FramedTexture,
+    SkinInfo,
+    Texture,
+    TextureWrapper,
+)
+
+
+class TestSkinInfo(unittest.TestCase):
+    """Test cases for the SkinInfo dataclass."""
+
+    def test_initialization(self):
+        """Test SkinInfo initialization."""
+        skin_info = SkinInfo(
+            x=100.0,
+            y=200.0,
+            font_size=24,
+            width=300.0,
+            height=100.0,
+            text={"en": "Test", "ja": "テスト"}
+        )
+
+        self.assertEqual(skin_info.x, 100.0)
+        self.assertEqual(skin_info.y, 200.0)
+        self.assertEqual(skin_info.font_size, 24)
+        self.assertEqual(skin_info.width, 300.0)
+        self.assertEqual(skin_info.height, 100.0)
+        self.assertEqual(skin_info.text, {"en": "Test", "ja": "テスト"})
+
+    def test_repr(self):
+        """Test SkinInfo string representation."""
+        skin_info = SkinInfo(
+            x=100.0,
+            y=200.0,
+            font_size=24,
+            width=300.0,
+            height=100.0,
+            text={"en": "Test"}
+        )
+
+        repr_str = repr(skin_info)
+        self.assertIn("100.0", repr_str)
+        self.assertIn("200.0", repr_str)
+
+
+class TestTexture(unittest.TestCase):
+    """Test cases for the Texture class."""
+
+    def setUp(self):
+        """Set up test fixtures."""
+        self.mock_texture = Mock()
+        self.mock_texture.width = 100
+        self.mock_texture.height = 50
+
+    @patch('libs.texture.ray')
+    def test_initialization_single_texture(self, mock_ray):
+        """Test Texture initialization with single texture."""
+        texture = Texture(
+            name="test_texture",
+            texture=self.mock_texture,
+            init_vals={}
+        )
+
+        self.assertEqual(texture.name, "test_texture")
+        self.assertEqual(texture.texture, self.mock_texture)
+        self.assertEqual(texture.width, 100)
+        self.assertEqual(texture.height, 50)
+        self.assertEqual(texture.x, [0])
+        self.assertEqual(texture.y, [0])
+
+    @patch('libs.texture.ray')
+    def test_initialization_with_init_vals(self, mock_ray):
+        """Test Texture initialization with init_vals."""
+        init_vals = {"x": 10, "y": 20}
+        texture = Texture(
+            name="test",
+            texture=self.mock_texture,
+            init_vals=init_vals
+        )
+
+        self.assertEqual(texture.init_vals, init_vals)
+        self.assertEqual(texture.name, "test")
+
+    @patch('libs.texture.ray')
+    def test_default_values(self, mock_ray):
+        """Test Texture default values."""
+        texture = Texture(name="test", texture=self.mock_texture, init_vals={})
+
+        self.assertEqual(texture.x, [0])
+        self.assertEqual(texture.y, [0])
+        self.assertEqual(texture.x2, [100])
+        self.assertEqual(texture.y2, [50])
+        self.assertEqual(texture.controllable, [False])
+
+    @patch('libs.texture.ray')
+    def test_repr(self, mock_ray):
+        """Test Texture string representation."""
+        texture = Texture(name="test", texture=self.mock_texture, init_vals={})
+
+        repr_str = repr(texture)
+        self.assertIn("test", repr_str)
+
+
+class TestFramedTexture(unittest.TestCase):
+    """Test cases for the FramedTexture class."""
+
+    def setUp(self):
+        """Set up test fixtures."""
+        self.mock_textures = [Mock() for _ in range(4)]
+        for tex in self.mock_textures:
+            tex.width = 200
+            tex.height = 100
+
+    @patch('libs.texture.ray')
+    def test_initialization(self, mock_ray):
+        """Test FramedTexture initialization."""
+        framed = FramedTexture(
+            name="test_framed",
+            texture=self.mock_textures,
+            init_vals={}
+        )
+
+        self.assertEqual(framed.name, "test_framed")
+        self.assertEqual(framed.texture, self.mock_textures)
+        self.assertEqual(framed.width, 200)
+        self.assertEqual(framed.height, 100)
+        self.assertEqual(framed.x, [0])
+        self.assertEqual(framed.y, [0])
+
+    @patch('libs.texture.ray')
+    def test_default_values(self, mock_ray):
+        """Test FramedTexture default values."""
+        framed = FramedTexture(
+            name="test",
+            texture=self.mock_textures,
+            init_vals={}
+        )
+
+        self.assertEqual(framed.x, [0])
+        self.assertEqual(framed.y, [0])
+        self.assertEqual(framed.x2, [200])
+        self.assertEqual(framed.y2, [100])
+
+
+class TestTextureWrapper(unittest.TestCase):
+    """Test cases for the TextureWrapper class."""
+
+    def setUp(self):
+        """Set up test fixtures."""
+        self.mock_texture = Mock()
+        self.mock_texture.width = 100
+        self.mock_texture.height = 50
+
+    @patch('libs.texture.get_config')
+    @patch('libs.texture.Path')
+    def test_initialization(self, mock_path_cls, mock_get_config):
+        """Test TextureWrapper initialization."""
+        mock_get_config.return_value = {'paths': {'skin': 'TestSkin'}}
+
+        # Mock the skin_config.json file
+        mock_path_instance = Mock()
+        mock_config_path = Mock()
+        mock_config_path.exists.return_value = True
+        mock_config_path.read_text.return_value = '{"screen": {"width": 1280, "height": 720}}'
+        mock_path_instance.__truediv__ = Mock(return_value=mock_config_path)
+        mock_path_cls.return_value = mock_path_instance
+
+        wrapper = TextureWrapper()
+
+        self.assertEqual(wrapper.screen_width, 1280)
+        self.assertEqual(wrapper.screen_height, 720)
+        self.assertIsInstance(wrapper.textures, dict)
+
+    @patch('libs.texture.get_config')
+    @patch('libs.texture.Path')
+    def test_get_animation(self, mock_path_cls, mock_get_config):
+        """Test getting animation from list."""
+        mock_get_config.return_value = {'paths': {'skin': 'TestSkin'}}
+
+        # Mock the skin_config.json file
+        mock_path_instance = Mock()
+        mock_config_path = Mock()
+        mock_config_path.exists.return_value = True
+        mock_config_path.read_text.return_value = '{"screen": {"width": 1280, "height": 720}}'
+        mock_path_instance.__truediv__ = Mock(return_value=mock_config_path)
+        mock_path_cls.return_value = mock_path_instance
+
+        mock_animation = Mock()
+
+        wrapper = TextureWrapper()
+        wrapper.animations = {0: mock_animation}
+
+        result = wrapper.get_animation(0)
+
+        self.assertEqual(result, mock_animation)
+
+    @patch('libs.texture.get_config')
+    @patch('libs.texture.Path')
+    @patch('libs.texture.copy.deepcopy')
+    def test_get_animation_copy(self, mock_deepcopy, mock_path_cls, mock_get_config):
+        """Test getting animation copy."""
+        mock_get_config.return_value = {'paths': {'skin': 'TestSkin'}}
+
+        # Mock the skin_config.json file
+        mock_path_instance = Mock()
+        mock_config_path = Mock()
+        mock_config_path.exists.return_value = True
+        mock_config_path.read_text.return_value = '{"screen": {"width": 1280, "height": 720}}'
+        mock_path_instance.__truediv__ = Mock(return_value=mock_config_path)
+        mock_path_cls.return_value = mock_path_instance
+
+        mock_animation = Mock()
+        mock_copy = Mock()
+        mock_deepcopy.return_value = mock_copy
+
+        wrapper = TextureWrapper()
+        wrapper.animations = {0: mock_animation}
+
+        result = wrapper.get_animation(0, is_copy=True)
+
+        mock_deepcopy.assert_called_once_with(mock_animation)
+        self.assertEqual(result, mock_copy)
+
+    @patch('libs.texture.get_config')
+    @patch('libs.texture.Path')
+    @patch('libs.texture.ray')
+    def test_read_tex_obj_data(self, mock_ray, mock_path_cls, mock_get_config):
+        """Test reading texture object data from JSON."""
+        mock_get_config.return_value = {'paths': {'skin': 'TestSkin'}}
+
+        # Mock the skin_config.json file
+        mock_path_instance = Mock()
+        mock_config_path = Mock()
+        mock_config_path.exists.return_value = True
+        mock_config_path.read_text.return_value = '{"screen": {"width": 1280, "height": 720}}'
+
+        mock_path_instance.__truediv__ = Mock(return_value=mock_config_path)
+        mock_path_cls.return_value = mock_path_instance
+
+        wrapper = TextureWrapper()
+
+        # Create a mock texture object
+        mock_texture = Mock()
+        mock_texture.x = [0]
+        mock_texture.y = [0]
+
+        # Test with a dictionary mapping
+        tex_mapping = {"x": 10, "y": 20}
+        wrapper._read_tex_obj_data(tex_mapping, mock_texture)
+
+        # Verify the texture attributes were updated (they are lists)
+        self.assertEqual(mock_texture.x, [10])
+        self.assertEqual(mock_texture.y, [20])
+
+    @patch('libs.texture.get_config')
+    @patch('libs.texture.Path')
+    def test_read_tex_obj_data_not_exists(self, mock_path_cls, mock_get_config):
+        """Test reading texture data with empty mapping."""
+        mock_get_config.return_value = {'paths': {'skin': 'TestSkin'}}
+
+        # Mock the skin_config.json file
+        mock_path_instance = Mock()
+        mock_config_path = Mock()
+        mock_config_path.exists.return_value = True
+        mock_config_path.read_text.return_value = '{"screen": {"width": 1280, "height": 720}}'
+
+        mock_path_instance.__truediv__ = Mock(return_value=mock_config_path)
+        mock_path_cls.return_value = mock_path_instance
+
+        wrapper = TextureWrapper()
+
+        # Create a mock texture object
+        mock_texture = Mock()
+        mock_texture.x = [0]
+        mock_texture.y = [0]
+
+        # Test with empty mapping (should not modify texture)
+        tex_mapping = {}
+        wrapper._read_tex_obj_data(tex_mapping, mock_texture)
+
+        # Verify the texture attributes remained unchanged
+        self.assertEqual(mock_texture.x, [0])
+        self.assertEqual(mock_texture.y, [0])
+
+if __name__ == '__main__':
+    unittest.main()

uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 2
 requires-python = ">=3.13"
 
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+    { url = "https://files.pythonhosted.org/packages/b3/30/177102e798539368aef25688a6a171d66ec92e6f16b6b651a89045a2bd13/pyinstrument-5.1.1-cp314-cp314t-win_amd64.whl", hash = "sha256:fa254f269a72a007b5d02c18cd4b67081e0efabbd33e18acdbd5e3be905afa06", size = 126528, upload-time = "2025-08-12T11:35:22.578Z" },
+]
+
 [[package]]
 name = "pypresence"
 version = "4.6.1"
@@ -122,11 +260,13 @@ wheels = [
 
 [[package]]
 name = "pytaiko"
-version = "1.0"
+version = "1.1"
 source = { virtual = "." }
 dependencies = [
     { name = "av" },
+    { name = "pyinstrument" },
     { name = "pypresence" },
+    { name = "pytest" },
     { name = "raylib-sdl" },
     { name = "tomlkit" },
 ]
@@ -134,18 +274,54 @@ dependencies = [
 [package.dev-dependencies]
 dev = [
     { name = "nuitka" },
+    { name = "pytest-cov" },
 ]
 
 [package.metadata]
 requires-dist = [
     { name = "av", specifier = ">=16.0.1" },
+    { name = "pyinstrument", specifier = ">=5.1.1" },
     { name = "pypresence", specifier = ">=4.6.1" },
+    { name = "pytest", specifier = ">=9.0.2" },
     { name = "raylib-sdl", specifier = ">=5.5.0.2" },
     { name = "tomlkit", specifier = ">=0.13.3" },
 ]
 
 [package.metadata.requires-dev]
-dev = [{ name = "nuitka", specifier = ">=2.8.4" }]
+dev = [
+    { name = "nuitka", specifier = ">=2.8.4" },
+    { name = "pytest-cov", specifier = ">=6.0.0" },
+]
+
+[[package]]
+name = "pytest"
+version = "9.0.2"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "colorama", marker = "sys_platform == 'win32'" },
+    { name = "iniconfig" },
+    { name = "packaging" },
+    { name = "pluggy" },
+    { name = "pygments" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/d1/db/7ef3487e0fb0049ddb5ce41d3a49c235bf9ad299b6a25d5780a89f19230f/pytest-9.0.2.tar.gz", hash = "sha256:75186651a92bd89611d1d9fc20f0b4345fd827c41ccd5c299a868a05d70edf11", size = 1568901, upload-time = "2025-12-06T21:30:51.014Z" }
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+]
+
+[[package]]
+name = "pytest-cov"
+version = "7.0.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "coverage" },
+    { name = "pluggy" },
+    { name = "pytest" },
+]
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+wheels = [
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+]
 
 [[package]]
 name = "raylib-sdl"