class ShardSprite(pygame.sprite.Sprite):
scene: 'GameScene'
shard: Shard
image: Surface
rect: Rect
hitbox: Rect
animation: Animation
def __init__(self, scene: 'GameScene', shard: Shard,
*groups: AbstractGroup):
super().__init__(*groups)
self.scene = scene
self.shard = shard
scale_factor = self.scene.settings.scale_factor
# load images and create looping animation
frames = load_scaled_surfaces(ANIM_SHARD_IDLE, scale_factor)
self.image = frames[0]
self.animation = Animation(frames, 75, loop=True)
self.animation.start(pygame.time.get_ticks())
center_of_first_tile = ((TILE_SIZE_PX // 2) * scale_factor,
(TILE_SIZE_PX // 2) * scale_factor)
# set rect and hitbox
self.rect = self.image.get_rect(center=center_of_first_tile)
self.hitbox = self.rect.copy()
self.hitbox.inflate_ip(-3 * scale_factor, -3 * scale_factor)
def update(self, *args, **kwargs) -> None:
self._update_rectangle_based_on_current_position()
self.image = self.animation.get_image(pygame.time.get_ticks())
def _update_rectangle_based_on_current_position(self):
scale_factor = self.scene.settings.scale_factor
position = self.shard.position
x = (position.x * TILE_SIZE_PX) + (TILE_SIZE_PX // 2)
x = x * scale_factor
y = ((position.y - self.scene.vertical_shift) *
TILE_SIZE_PX) + (TILE_SIZE_PX // 2)
y = y * scale_factor
self.rect.center = (x, y)
self.hitbox.center = (x, y)
def test_animation_should_loop_forever(self):
dummy_frames = ["0", "1", "2"]
dummy_delay = 10
a = Animation(dummy_frames, dummy_delay, loop=True)
# start animation at 100-th millisecond
a.start(100)
self.assertFalse(a.is_over())
self.assertEqual("0", a.get_image(100))
self.assertEqual("0", a.get_image(101))
self.assertFalse(a.is_over())
self.assertEqual("2", a.get_image(120))
self.assertEqual("2", a.get_image(129))
self.assertFalse(a.is_over())
self.assertEqual("0", a.get_image(130))
self.assertFalse(a.is_over())
self.assertEqual("1", a.get_image(145))
self.assertFalse(a.is_over())
self.assertEqual("2", a.get_image(150))
self.assertFalse(a.is_over())
self.assertEqual("1", a.get_image(410))
self.assertFalse(a.is_over())