class Entity(pygame.sprite.Sprite):
def __init__(self, size, start_pos, move_speed):
super().__init__()
self.surf = pygame.Surface(size)
self.rect = self.surf.get_rect(center=start_pos)
self.move_direction = Vector((0, 0))
self.speed = move_speed
def update(self):
if not self.alive():
return
new_direction = self.get_move_direction().normalize().multiply(
self.speed)
if game_rules.USE_ACCELERATION:
self.move_direction = self.move_direction.multiply(
game_rules.ACCELERATION_DECAY).plus(new_direction)
else:
self.move_direction = new_direction
self.rect.move_ip(self.move_direction.values)
@abstractmethod
def get_move_direction(self):
pass
def draw(self, surface):
rotation = get_image_rotation_from_direction(self.move_direction)
if self.get_image():
image = pygame.transform.rotate(self.get_image(), rotation)
surface.blit(image, self.rect)
@abstractmethod
def get_image(self):
pass
@staticmethod
def load_scaled_image(image_path, scale):
image = pygame.image.load(image_path)
return pygame.transform.scale(image, scale)
@property
def x(self):
return self.rect.centerx
@property
def y(self):
return self.rect.centery
def get_size(self):
return self.rect.size
