Python Pygame中精灵和碰撞检测详解

class Sprite(pygame.sprite.Sprite):
    def __init__(self, pos):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface([20, 20])
        self.image.fill((255, 0, 255))
        self.rect = self.image.get_rect()
        self.rect.center = pos

pygame.init()
    clock = pygame.time.Clock()
    fps = 50
    bg = [0, 0, 0]
    size =[300, 300]
    screen = pygame.display.set_mode(size)
    player = Sprite([40, 50])
    # Define keys for player movement
    player.move = [pygame.K_LEFT, pygame.K_RIGHT, pygame.K_UP, pygame.K_DOWN]
    player.vx = 5
    player.vy = 5

    wall = Sprite([100, 60])

    wall_group = pygame.sprite.Group()
    wall_group.add(wall)

    player_group = pygame.sprite.Group()
    player_group.add(player)

while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                return False
        key = pygame.key.get_pressed()
        for i in range(2):
            if key[player.move[i]]:
                player.rect.x += player.vx * [-1, 1][i]

        for i in range(2):
            if key[player.move[2:4][i]]:
                player.rect.y += player.vy * [-1, 1][i]
        screen.fill(bg)
        # first parameter takes a single sprite
        # second parameter takes sprite groups
        hit = pygame.sprite.spritecollide(player, wall_group, True)
        if hit:
        # if collision is detected call a function to destroy
            # rect
            player.image.fill((255, 255, 255))

pygame.sprite.collide_rect(first, second) #返回布尔值

#第一个参数是精灵，
#第二个参数是精灵组，
#第三个参数为True，则碰撞检测后，组中所有碰撞的精灵被删除
#返回 组中被碰撞的精灵
collide_list = pygame.sprite.spritecollide(sprite,group,False)

#前两个参数都是组
#后两个参数，代表发生碰撞时，是否删除精灵
#该函数返回一个字典
#第一个组中的每一个精灵都会添加到字典中
#第二组中与之碰撞的精灵会添加到字典相应的条目中
hit_list = pygame.sprite.groupcollide(group1,group2,True,False)