我在使用 pygame 动画时遇到问题

如何解决我在使用 pygame 动画时遇到问题

我对编码非常陌生，我在 pygame 中的动画遇到了一些问题，我只能看到静止图像，而不是移动。

import pygame
import os

pygame.init()

Stationary = pygame.image.load(os.path.join("Assets","stationary.png"))
left = [pygame.image.load(os.path.join("Assets","L1.png")),pygame.image.load(os.path.join("Assets","L2.png")),"L3.png")),"L4.png"))
        ]
right = [pygame.image.load(os.path.join("Assets","R1.png")),"R2.png")),"R3.png")),"R4.png"))
         ]

WIDTH,HEIGHT = 500,300
screen = pygame.display.set_mode((WIDTH,HEIGHT))
BLACK = 0,0
vel = 0.5
stepIndex = 0
clock = pygame.time.Clock()
FPS = 60
move_left = False
move_right = False
x = 50
y = 250


def draw_screen():
    global stepIndex
    screen.fill(BLACK)
    if stepIndex >= 8:
        stepIndex = 0
    if move_left:
        screen.blit(left[stepIndex//2],(x,y))
    elif move_right:
        screen.blit(right[stepIndex//2],y))
    else:
        screen.blit(Stationary,y))


running = True
while running:
    clock.tick(FPS)
    draw_screen()
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    keys_pressed = pygame.key.get_pressed()
    if keys_pressed[pygame.K_d]:
        x += vel
        move_right = True
        move_left = False
    elif keys_pressed[pygame.K_a]:
        x -= vel
        move_right = False
        move_left = True
    else:
        move_left = False
        move_right = False
        stepIndex = 0

    pygame.display.update()

pygame.quit()

我已经盯着我的代码看了大约 2 个小时，并在互联网上搜索解决方案并得到了这个，我什至查看了我的谷歌搜索的第二页只是为了找到我的问题的一些答案。

解决方法

您错过了递增 stepIndex：

def draw_screen():
    global stepIndex
    screen.fill(BLACK)

    stepIndex += 1      # <--- this is missing
    if stepIndex >= 8:
        stepIndex = 0
    
    if move_left:
        screen.blit(left[stepIndex//2],(x,y))
    elif move_right:
        screen.blit(right[stepIndex//2],y))
    else:
        screen.blit(Stationary,y))