空中碰撞

问题描述

我正在制作一个平台游戏并且我有碰撞工作，但是对于平台，左侧似乎有一个额外的立方体区域，玩家可以在上面行走。我似乎无法弄清楚如何删除它。下面是一些我认为是其原因的代码，但我不确定。

。我已经为平台等修剪了图像，但问题仍然存在。

background_image = pygame.image.load("JungleBackground.png")
done = False
clock = pygame.time.Clock()
black = ( 0,0)
white = ( 255,255,255)
x = 300
y = 88

class Character(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((100,100))
        self.image.set_colorkey(black)

        self.rect = self.image.get_rect(center=(50,300))
        self.rect.x = 50
        self.rect.y = 300
        self.pos = vec(50,300)
        self.vel = vec(0,0)
        self.acc = vec(0,0)

        self.image.blit(pygame.image.load("TheoHillsS.png"),(0,0))

    def characterJump(self):
        self.rect.y += 1
        hits = pygame.sprite.spritecollide(self,platforms,False)
        self.rect.y -= 1
        if hits:
            self.vel.y = -13
            
    def update(self):
        self.acc = vec(0,0.5)
        keys = pygame.key.get_pressed()
        if keys[pygame.K_a]:
            self.acc.x = -PLAYER_ACC
        if keys[pygame.K_d]:
            self.acc.x = PLAYER_ACC

        # apply friction
        self.vel.x *= PLAYER_FRICTION
        self.vel += self.acc
        self.pos += self.vel

        self.rect.midbottom = self.pos



class Platform(pygame.sprite.Sprite):
    def __init__(self,x,y,w,h):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((100,88))
        self.image.fill(black)
        self.image = pygame.image.load("Platform1.png")
        self.rect = self.image.get_rect(topleft=(x,y))
        
        

all_sprites = pygame.sprite.Group()
platforms = pygame.sprite.Group()

character = Character()
all_sprites.add(character)

p1 = Platform(-80,350,WIDTH - 400,HEIGHT - 10)
p2 = Platform(175,220,HEIGHT - 10)
p3 = Platform(500,HEIGHT - 10)
all_sprites.add(p1,p2,p3)
platforms.add(p1,p3)


# Main Game

running = True
while running:
    clock.tick(FPS)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_SPACE:
                character.characterJump()
    
    all_sprites.update()
    
    hits = pygame.sprite.spritecollide(character,False)
    for platform in hits:
        if character.vel.y > 0:
            character.rect.bottom = platform.rect.top
            character.vel.y = 0
        elif character.vel.y < 0:
            character.rect.top = platform.rect.bottom
            character.vel.y = 3
            
        character.pos.y = character.rect.bottom

    
    screen.blit(background_image,[0,0])
    all_sprites.draw(screen)
    pygame.display.flip()

game_intro()
game_loop()
pygame.quit()
quit()

解决方法

碰撞是针对图像的边界矩形进行测试的，而不是针对图像上绘制的区域。确保平台和玩家几乎填满了 pygame.Surface 的整个区域。
不要在比播放器大得多的透明Surface上绘制播放器，而是直接使用pygame.image.load创建的Surface：

class Character(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)

        self.image = pygame.image.load("TheoHillsS.png")
        self.rect = self.image.get_rect(topleft = (50,300))
        
        self.pos = vec(50,300)
        self.vel = vec(0,0)
        self.acc = vec(0,0)

    # [...]