Question

我正在尝试对此代码进行整合，该代码会自动使用我的Sprite代码生成一个迷宫，但是当我尝试添加自己的Sprite代码段时，程序始终会出错。

IV尝试删除和重新定义变量，并使用自己的代码段删除程序变量

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如果有人可以帮助我找出这里的实际问题，那真是太棒了，因为当我浏览代码时，我看不到列出的当前变量有任何问题，因为我的代码段与自动生成的迷宫没有任何共同之处程序。

Answer 1

在主循环中

The issue is the assignment of the function object load_background to背景`

background = load_background

您必须调用函数load_background并将返回值分配给background：

background = load_background()

我建议将默认参数值添加到函数load_background的参数中：

def load_background(filename=None):
    name = filename if filename else "background.jpg"
    background = pygame.image.load(name)
    background = pygame.transform.rotate(background, -90)
    background = pygame.transform.scale(background, (800,600))
    return background

如果您想选择放弃背景，请设置

background = None

并在绘制或访问背景之前检查背景是否存在：

if background:
    screen.fill(pygame.Color('grey'))
    screen.blit(background, (0, 0))

class Player(pygame.sprite.Sprite):

    # [...]

    def update(self, events, dt):

        # [...]

        if self.background:

            new_rect.clamp_ip(self.background.get_rect())
            new_pos = new_rect.center

            hit_box = self.background.subsurface(new_rect)
            for x in range(new_rect.width):
                for y in range(new_rect.height):
                    if sum(hit_box.get_at((x, y))) < 500:
                        return

避免在主循环内出现其他循环。该应用程序应在单个循环中运行。在主循环中，应该有一个事件循环。

变量play是state，它指示迷宫是否已建立或游戏是否处于运行状态：

# initilization
# [...]

while not done:

    # event loop
    for event in pygame.event.get():

        # [...]

    if play:

        # play 
        # [...]

    else:

        # create maze
        # [...]

play为空时，必须设置状态stack：

        if next_cell != False:
            current_cell.neighbors = []
            stack.append(current_cell)
            removeWalls(current_cell,next_cell)
            current_cell.current = False
            current_cell = next_cell
        elif len(stack) > 0:
            current_cell.current = False
            current_cell = stack.pop()
        else:
            play = True

main函数的外观如下：

def main():

    global current_cell

    player = None
    initialized = False
    current_maze = None
    dt = 0  
    screen_rect = screen.get_rect()
    clock = pygame.time.Clock()
    sprites = pygame.sprite.Group()

    if not initialized:
        #current_maze = 0
        background = load_background()
        background = None
        player = load_player(background)
        sprites.add(player)
        initialized = True

    play = False
    while not done:
        # --- Main event loop
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                return

        for y in range(rows):
            for x in range(cols):
                grid[y][x].draw()

        if play:

            # [...]

            sprites.update(None, dt)

            # [...]

            sprites.draw(screen)
            pygame.display.flip()
            dt = clock.tick(60)

        else:
            current_cell.visited = True
            current_cell.current = True

            next_cell = current_cell.checkNeighbors()
            if next_cell != False:
                current_cell.neighbors = []
                stack.append(current_cell)
                removeWalls(current_cell,next_cell)
                current_cell.current = False
                current_cell = next_cell
            elif len(stack) > 0:
                current_cell.current = False
                current_cell = stack.pop()
            else:
                play = True

        pygame.display.flip()

最后，由于self.pos从未更改且self.rect从未设置，因此播放器不会移动。
在self.rect中设置Player.update：

def update(self, events, dt):
    pressed = pygame.key.get_pressed()
    move = pygame.Vector2((0, 0))
    if pressed[pygame.K_w]: move += (0, -1)
    if pressed[pygame.K_a]: move += (-1, 0)
    if pressed[pygame.K_s]: move += (0, 1)
    if pressed[pygame.K_d]: move += (1, 0)

    self.pos = self.pos + move*(dt/5)
    self.rect.center = self.pos

将Sprite片段集成到迷宫程序中

1 个答案: