检查列表中的项目未按预期工作

如何解决检查列表中的项目未按预期工作

我正在尝试重新创建一个通常称为 Tron 的游戏。游戏的目标是让玩家尽可能长时间地活着。玩家不断移动并且只能在 90 度转弯时改变方向，如果玩家踩到他们之前已经站过的地方，他们就会死亡并且游戏会重置。 我对存储玩家已经站过的地方的坐标的列表有问题。当玩家第一次移动时，它会立即记录失败并重置游戏。 请查看我下面的代码，告诉我问题所在，尤其是游戏循环结束时的最后一个“if 块”。

import pygame
import sys

pygame.init()
screen = pygame.display.set_mode((600,600))
clock = pygame.time.Clock()

player_y = 300
player_x = 300

player_x_list = [300]
player_y_list = [300]

player_rect = pygame.Rect(0,25,25)

player_direction_y = 0
player_direction_x = 0


while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_s and player_direction_y == 0:
                player_direction_y = 25
                player_direction_x = 0
            if event.key == pygame.K_w and player_direction_y == 0:
                player_direction_y = -25
                player_direction_x = 0
            if event.key == pygame.K_d and player_direction_x == 0:
                player_direction_x = 25
                player_direction_y = 0
            if event.key == pygame.K_a and player_direction_x == 0:
                player_direction_x = -25
                player_direction_y = 0

    player_y += player_direction_y
    player_x += player_direction_x

    # This is supposed to record every x coord the player was located in on a list,#  and every y coord a player was located in on a list
    # I only record the coord once as seen below
    if player_x_list.count(player_x) == 0:
        player_x_list.append(player_x)
    if player_y_list.count(player_y) == 0:
        player_y_list.append(player_y)

    player_rect.center = player_x,player_y

    # This right here is supposed to reset the game when the player steps on
    # coords that were already stepped on previosly.
    # If you remove this,the player is able to move freely,so the issue is here
    if player_x_list.count(player_x) > 0 and player_y_list.count(player_y) > 0:
        player_x = 300
        player_y = 300
        player_direction_x = 0
        player_direction_y = 0
        player_x_list.clear()
        player_y_list.clear()

    screen.fill((pygame.Color('black')))
    pygame.draw.rect(screen,(pygame.Color('white')),player_rect)
    pygame.display.update()
    clock.tick(10)

我真诚地感谢您的时间。

解决方法

我认为问题在于您在更新坐标并将其附加到坐标列表后检查坐标。因此，在对坐标列表进行任何更改之前，尝试将您的 if 语句移动到循环的顶部。

另外，在一个不相关的注释中，您可以使用单个元组列表作为坐标，而不是两个整数列表。