Pygame 窗口即使在 while 循环内也会立即关闭

Question

我目前正在尝试在项目中使用 pygame，但无论我做什么，我都无法让窗口保持打开状态。我把它放在一个 while 循环中，唯一打破循环的应该是用户关闭窗口。我个人也没有看到任何缩进问题。我可以在这里做什么来让我的窗口保持打开状态？相关代码如下

def create_grid(rows, width):
    grid = []
    gap = width // rows

    for i in range(rows):
        grid.append([])

        for j in range(rows):
            node = Node(i, j, gap, rows)
            grid[i].append(node)

    return grid


def draw_grid(win, rows, width):

    gap = width // rows

    for i in range(rows):
        pygame.draw.line(win, GREY, (0, i * gap), (width, i * gap))

        for j in range(rows):
            pygame.draw.line(win, GREY, (j * gap, 0), (j * gap, width))

def draw(win, grid, rows, width):
    win.fill(WHITE)

    for row in grid:
        for node in row:
            node.draw(win)

    draw_grid(win, rows, width)
    pygame.display.update()

def get_mouse_pos(pos, rows, width):
    gap = width // rows

    y, x = pos

    row = y // gap
    col = x // gap

    return row, col

def main(win, width):

    ROWS = 50
    grid = draw_grid(ROWS, width)

    start = None
    end = None

    run = True
    started = False

    while run:

        draw(win, grid, ROWS, width)

        for event in pygame.event.get():
            
            if event.type == pygame.QUIT:
                run = False

            if started:
                continue

            if pygame.mouse.get_pressed()[0]:

                pos = pygame.mouse.get_pos()
                row, col = get_mouse_pos(pos, ROWS, width)
                node = grid[row][col]

                if not start:
                    start = node
                    start.create_start()

                elif not end:
                    end = node
                    end.create_end()

                elif node != end and node != start:
                    node.create_barrier()

            elif pygame.mouse.get_pressed()[2]:
                pass

    pygame.quit()

main(WIN, WIDTH)

Answer 1

您不应该在主循环中调用 create_grid 吗？我做了一些更改，请告诉我它是否有效。您可以根据您的要求进行一些调整。

def main(win, width):
    ROWS = 50
    grid = create_grid(ROWS, width) 

    start = None
    end = None

    run = True
    started = False

    while run:
        draw(win, grid, ROWS, width)

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                run = False

            if started:   
                continue

            if pygame.mouse.get_pressed()[0]:
                pos = pygame.mouse.get_pos()
                row, col = get_mouse_pos(pos, ROWS, width)
                node = grid[row][col]

                if not start:
                    start = node
                    start.create_start()

                elif not end:
                    end = node
                    end.create_end()

                elif node != end and node != start:
                    node.create_barrier()

            elif pygame.mouse.get_pressed()[2]:
                pass

    pygame.quit()

main(WIN, WIDTH)