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285 lines
11 KiB
Python
285 lines
11 KiB
Python
from typing import Optional
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from libs.utils import get_current_ms
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class BaseAnimation():
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def __init__(self, duration: float, delay: float = 0.0) -> None:
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"""
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Initialize a base animation.
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Args:
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duration: Length of the animation in milliseconds
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delay: Time to wait before starting the animation
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reverse_delay: If provided, animation will play in reverse after this delay
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"""
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self.duration = duration
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self.delay = delay
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self.start_ms = get_current_ms()
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self.is_finished = False
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self.attribute = 0
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def update(self, current_time_ms: float) -> None:
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"""Update the animation based on the current time."""
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pass
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def restart(self) -> None:
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self.start_ms = get_current_ms()
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self.is_finished = False
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def _ease_in(self, progress: float, ease_type: str) -> float:
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if ease_type == "quadratic":
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return progress * progress
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elif ease_type == "cubic":
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return progress * progress * progress
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elif ease_type == "exponential":
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return 0 if progress == 0 else pow(2, 10 * (progress - 1))
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return progress
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def _ease_out(self, progress: float, ease_type: str) -> float:
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if ease_type == "quadratic":
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return progress * (2 - progress)
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elif ease_type == "cubic":
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return 1 - pow(1 - progress, 3)
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elif ease_type == "exponential":
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return 1 if progress == 1 else 1 - pow(2, -10 * progress)
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return progress
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def _apply_easing(self, progress: float, ease_in: Optional[str] = None,
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ease_out: Optional[str] = None) -> float:
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if ease_in:
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return self._ease_in(progress, ease_in)
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elif ease_out:
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return self._ease_out(progress, ease_out)
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return progress
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class FadeAnimation(BaseAnimation):
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def __init__(self, duration: float, initial_opacity: float = 1.0,
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final_opacity: float = 0.0, delay: float = 0.0,
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ease_in: Optional[str] = None, ease_out: Optional[str] = None,
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reverse_delay: Optional[float] = None) -> None:
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super().__init__(duration, delay)
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self.initial_opacity = initial_opacity
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self.final_opacity = final_opacity
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self.initial_opacity_saved = initial_opacity
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self.final_opacity_saved = final_opacity
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self.ease_in = ease_in
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self.ease_out = ease_out
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self.reverse_delay = reverse_delay
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self.reverse_delay_saved = reverse_delay
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def restart(self) -> None:
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super().restart()
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self.reverse_delay = self.reverse_delay_saved
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self.initial_opacity = self.initial_opacity_saved
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self.final_opacity = self.final_opacity_saved
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def update(self, current_time_ms: float) -> None:
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elapsed_time = current_time_ms - self.start_ms
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if elapsed_time <= self.delay:
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self.attribute = self.initial_opacity
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elif elapsed_time >= self.delay + self.duration:
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self.attribute = self.final_opacity
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if self.reverse_delay is not None:
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self.start_ms = current_time_ms
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self.delay = self.reverse_delay
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self.initial_opacity, self.final_opacity = self.final_opacity, self.initial_opacity
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self.reverse_delay = None
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else:
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self.is_finished = True
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else:
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animation_time = elapsed_time - self.delay
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progress = animation_time / self.duration
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progress = max(0.0, min(1.0, progress))
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progress = self._apply_easing(progress, self.ease_in, self.ease_out)
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self.attribute = self.initial_opacity + progress * (self.final_opacity - self.initial_opacity)
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class MoveAnimation(BaseAnimation):
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def __init__(self, duration: float, total_distance: int = 0,
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start_position: int = 0, delay: float = 0.0,
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reverse_delay: Optional[float] = None,
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ease_in: Optional[str] = None, ease_out: Optional[str] = None) -> None:
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super().__init__(duration, delay)
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self.reverse_delay = reverse_delay
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self.reverse_delay_saved = reverse_delay
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self.total_distance = total_distance
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self.start_position = start_position
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self.total_distance_saved = total_distance
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self.start_position_saved = start_position
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self.ease_in = ease_in
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self.ease_out = ease_out
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def restart(self) -> None:
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super().restart()
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self.reverse_delay = self.reverse_delay_saved
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self.total_distance = self.total_distance_saved
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self.start_position = self.start_position_saved
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def update(self, current_time_ms: float) -> None:
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elapsed_time = current_time_ms - self.start_ms
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if elapsed_time < self.delay:
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self.attribute = self.start_position
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elif elapsed_time >= self.delay + self.duration:
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self.attribute = self.start_position + self.total_distance
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if self.reverse_delay is not None:
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self.start_ms = current_time_ms
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self.delay = self.reverse_delay
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self.start_position = self.start_position + self.total_distance
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self.total_distance = -(self.total_distance)
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self.reverse_delay = None
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else:
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self.is_finished = True
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else:
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progress = (elapsed_time - self.delay) / self.duration
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progress = self._apply_easing(progress, self.ease_in, self.ease_out)
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self.attribute = self.start_position + (self.total_distance * progress)
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class TextureChangeAnimation(BaseAnimation):
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def __init__(self, duration: float, textures: list[tuple[float, float, int]], delay: float = 0.0) -> None:
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super().__init__(duration)
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self.textures = textures
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self.delay = delay
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def update(self, current_time_ms: float) -> None:
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elapsed_time = current_time_ms - self.start_ms - self.delay
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if elapsed_time <= self.duration:
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for start, end, index in self.textures:
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if start < elapsed_time <= end:
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self.attribute = index
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else:
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self.is_finished = True
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class TextStretchAnimation(BaseAnimation):
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def __init__(self, duration: float) -> None:
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super().__init__(duration)
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def update(self, current_time_ms: float) -> None:
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elapsed_time = current_time_ms - self.start_ms
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if elapsed_time <= self.duration:
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self.attribute = 2 + 5 * (elapsed_time // 25)
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elif elapsed_time <= self.duration + 116:
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frame_time = (elapsed_time - self.duration) // 16.57
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self.attribute = 2 + 10 - (2 * (frame_time + 1))
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else:
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self.attribute = 0
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self.is_finished = True
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class TextureResizeAnimation(BaseAnimation):
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def __init__(self, duration: float, initial_size: float = 1.0,
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final_size: float = 0.0, delay: float = 0.0,
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reverse_delay: Optional[float] = None) -> None:
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super().__init__(duration, delay)
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self.initial_size = initial_size
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self.final_size = final_size
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self.reverse_delay = reverse_delay
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self.initial_size_saved = initial_size
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self.final_size_saved = final_size
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self.reverse_delay_saved = reverse_delay
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def restart(self) -> None:
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super().restart()
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self.reverse_delay = self.reverse_delay_saved
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self.initial_size = self.initial_size_saved
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self.final_size = self.final_size_saved
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def update(self, current_time_ms: float) -> None:
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elapsed_time = current_time_ms - self.start_ms
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if elapsed_time <= self.delay:
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self.attribute = self.initial_size
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elif elapsed_time >= self.delay + self.duration:
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self.attribute = self.final_size
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if self.reverse_delay is not None:
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self.start_ms = current_time_ms
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self.delay = self.reverse_delay
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self.initial_size, self.final_size = self.final_size, self.initial_size
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self.reverse_delay = None
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else:
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self.is_finished = True
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else:
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animation_time = elapsed_time - self.delay
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progress = animation_time / self.duration
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self.attribute = self.initial_size + ((self.final_size - self.initial_size) * progress)
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class Animation:
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"""Factory for creating different types of animations."""
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@staticmethod
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def create_fade(duration: float, **kwargs) -> FadeAnimation:
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"""Create a fade animation.
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Args:
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duration: Length of the fade in milliseconds
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delay: Time to wait before starting the fade
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initial_opacity: Default is 1.0
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final_opacity: Default is 0.0
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reverse_delay: If provided, fade will play in reverse after this delay
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ease_in: Control ease into the fade
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ease_out: Control ease out of the fade
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Easing options:
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quadratic,
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cubic,
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exponential
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"""
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return FadeAnimation(duration, **kwargs)
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@staticmethod
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def create_move(duration: float, **kwargs) -> MoveAnimation:
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"""Create a movement animation.
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Args:
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duration: Length of the move in milliseconds
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start_position: The coordinates of the object before the move
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total_distance: The distance travelled from the start to end position
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reverse_delay: If provided, move will play in reverse after this delay
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delay: Time to wait before starting the move
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ease_in: Control ease into the move
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ease_out: Control ease out of the move
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Easing options:
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quadratic,
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cubic,
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exponential
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"""
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return MoveAnimation(duration, **kwargs)
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@staticmethod
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def create_texture_change(duration: float, **kwargs) -> TextureChangeAnimation:
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"""Create a texture change animation
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Args:
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duration: Length of the change in milliseconds
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textures: Passed in as a tuple of the starting millisecond, ending millisecond, and texture index
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delay: Time to wait before starting the change
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"""
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return TextureChangeAnimation(duration, **kwargs)
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@staticmethod
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def create_text_stretch(duration: float) -> TextStretchAnimation:
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"""Create a text stretch animation.
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Args:
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duration: Length of the stretch in milliseconds
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"""
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return TextStretchAnimation(duration)
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@staticmethod
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def create_texture_resize(duration: float, **kwargs) -> TextureResizeAnimation:
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"""Create a texture resize animation.
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Args:
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duration: Length of the change in milliseconds
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initial_size: Default is 1.0
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final_size: Default is 0.0
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delay: Time to wait before starting the resize
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reverse_delay: If provided, resize will play in reverse after this delay
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"""
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return TextureResizeAnimation(duration, **kwargs)
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