时间戳

首页 > 解决方案 > 玩家角色没有移动

python - 玩家角色没有移动

问题描述

所以，我在我的游戏中开发太空船运动时遇到了一些麻烦。我检查了几次代码，但仍然找不到任何东西。该项目来自此视频https://www.youtube.com/watch?v=FfWpgLFMI7w，我在 44:55 分钟得到了这个错误，我使用的是 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()

标签： pythonpython-3.xpygame

解决方案

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，代码可以通过使用来简化pygame.key.get_pressed()。pygame.key.get_pressed()返回一个布尔值序列，表示每个键的状态：

# 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()

推荐阅读