我正在使用 Livewires 和 pygame,我在游戏中给你额外生命的一个物体被误认为是小行星物体,当额外生命物体与玩家碰撞时,它返回“额外生命物体没有属性 handle_caught”错误消息,所以我可以请一些帮助。
class Extralives(games.Sprite):
global lives
image = games.load_image('lives.png', transparent = True)
speed = 2
def __init__(self,x,y = 10):
""" Initialize a asteroid object. """
super(Extralives, self).__init__(image = Extralives.image,
x = x, y = y,
dy = Extralives.speed)
def update(self):
""" Check if bottom edge has reached screen bottom. """
if self.bottom>games.screen.height:
self.destroy()
self.add_extralives
def add_extralives(self):
lives+=1
小行星类:
class Asteroid(games.Sprite):
global lives
global score
"""
A asteroid which falls through space.
"""
image = games.load_image("asteroid_med.bmp")
speed = 1.7
def __init__(self, x,image, y = 10):
""" Initialize a asteroid object. """
super(Asteroid, self).__init__(image = image,
x = x, y = y,
dy = Asteroid.speed)
def update(self):
""" Check if bottom edge has reached screen bottom. """
if self.bottom>games.screen.height:
self.destroy()
score.value+=10
def handle_caught(self):
if lives.value>0:
lives.value-=1
self.destroy_asteroid()
if lives.value <= 0:
self.destroy_asteroid()
self.end_game()
def destroy_asteroid(self):
self.destroy()
处理碰撞的播放器类的一部分:
def update(self):
""" uses A and D keys to move the ship """
if games.keyboard.is_pressed(games.K_a):
self.x-=4
if games.keyboard.is_pressed(games.K_d):
self.x+=4
if self.left < 0:
self.left = 0
if self.right > games.screen.width:
self.right = games.screen.width
self.check_collison()
def ship_destroy(self):
self.destroy()
def check_collison(self):
""" Check if catch pizzas. """
global lives
for asteroid in self.overlapping_sprites:
asteroid.handle_caught()
if lives.value <=0:
self.ship_destroy()
for extralives in self.overlapping_sprites:
extralives.add_extralives()