Question

因此，我在开发游戏中的太空飞船运动时遇到了一些麻烦。我检查了几次代码，但仍然找不到。该项目来自该视频https://www.youtube.com/watch?v=FfWpgLFMI7w，并且我在44:55分钟就收到了这个错误，并且我正在使用Python 3.8。这是代码。

import pygame

# Initiate pygame
pygame.init()

# Display the game window
screen = pygame.display.set_mode((800,600))

# Title and Icon
pygame.display.set_caption('Space Invaders')
icon = pygame.image.load('icon.png')
pygame.display.set_icon(icon)

# Player
playerSprite = pygame.image.load('player.png')
playerX = 370
playerY = 480
playerX_change = 0

def player(x,y):
    screen.blit(playerSprite, (x, y))

# Game Loop
running = True
while running:

    # Background color (RGB)
    screen.fill((0, 0, 0))

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

        # If a key is pressed, check if it's the right or left arrow key
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                playerX_change = -0.1
            if event.key == pygame.K_RIGHT:
                playerX_change = 0.1
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
                playerX_change = 0.1

    # Move the spaceship to the left or right
    playerX_change += playerX
    player(playerX,playerY)
    pygame.display.update()

Answer 1

您必须更改播放器的位置（playerX），而不是移动距离playerX_change：

~~playerX_change += playerX~~

playerX += playerX_change

无论如何，可以使用pygame.key.get_pressed()来简化代码。 pygame.key.get_pressed()返回表示每个键状态的布尔值序列：

# Game Loop
running = True
while running:

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

    # Move the spaceship to the left or right
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        playerX -= 0.1
    if keys[pygame.K_RIGHT]:
        playerX += 0.1

    # Background color (RGB)
    screen.fill((0, 0, 0))

    player(playerX,playerY)
    pygame.display.update()

玩家角色没有动弹

1 个答案: