add fever bouncers

libs/bg_objects/fever.py

@@ -0,0 +1,49 @@
+from libs.animation import Animation
+from libs.texture import TextureWrapper
+
+class Fever:
+
+    @staticmethod
+    def create(tex: TextureWrapper, index: int, bpm: float):
+        map = [Fever0, Fever1, Fever2, Fever3]
+        selected_obj = map[index]
+        return selected_obj(tex, index, bpm)
+
+class BaseFever:
+    def __init__(self, tex: TextureWrapper, index: int, bpm: float):
+        self.name = 'fever_' + str(index)
+        tex.load_zip('background', f'fever/{self.name}')
+        self.bounce_up = Animation.create_move((60000 / bpm) / 2, total_distance=50, ease_out='quadratic')
+        self.bounce_down = Animation.create_move((60000 / bpm) / 2, total_distance=50, ease_in='quadratic', delay=self.bounce_up.duration)
+
+    def start(self):
+        self.bounce_down.start()
+        self.bounce_up.start()
+
+    def update(self, current_time_ms: int, bpm: float):
+        self.bounce_up.update(current_time_ms)
+        self.bounce_down.update(current_time_ms)
+        if self.bounce_down.is_finished:
+            self.bounce_up.duration = (60000 / bpm) / 2
+            self.bounce_down.duration = (60000 / bpm) / 2
+            self.bounce_up.restart()
+            self.bounce_down.restart()
+
+class Fever0(BaseFever):
+    def draw(self, tex: TextureWrapper):
+        tex.draw_texture(self.name, 'overlay_l', y=self.bounce_down.attribute-self.bounce_up.attribute)
+        tex.draw_texture(self.name, 'overlay_r', y=self.bounce_down.attribute-self.bounce_up.attribute)
+
+class Fever1(BaseFever):
+    def draw(self, tex: TextureWrapper):
+        tex.draw_texture(self.name, 'overlay_l', y=self.bounce_down.attribute-self.bounce_up.attribute)
+        tex.draw_texture(self.name, 'overlay_r', y=self.bounce_down.attribute-self.bounce_up.attribute)
+
+class Fever2(BaseFever):
+    def draw(self, tex: TextureWrapper):
+        tex.draw_texture(self.name, 'overlay_l', y=self.bounce_down.attribute-self.bounce_up.attribute)
+        tex.draw_texture(self.name, 'overlay_r', y=self.bounce_down.attribute-self.bounce_up.attribute)
+
+class Fever3(BaseFever):
+    def draw(self, tex: TextureWrapper):
+        tex.draw_texture(self.name, 'overlay', y=self.bounce_down.attribute-self.bounce_up.attribute)