def __init__(self, position, radius):
BaseGameEntity.__init__(self, position, radius)
self.velocity = Vector2(0, 1)
self.head_direction = Vector2(0, 1) # 指向实体的朝向
self.side_direction = self.head_direction.perp() # 垂直朝向的向量
self.mass = 10.0 # 质量
self.max_speed = 1.0 # 最大速度
self.max_force = 0 # 最大力
self.max_turn_rate = 0 # 弧度每秒
def __init__(self):
BaseGameEntity.__init__(self)
def __init__(self, game_world, position, radius, tag=False, scale=(1.0, 1.0)):
BaseGameEntity.__init__(self, position, radius, tag, scale)
self.game_world = game_world