1.控制飞机

基础设置 pygame template.py

# Pygame 模板
import pygame
import random

WIDTH = 360
HEIGHT = 480
FPS = 30

# 定义RGB 颜色常量
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)

# 初始Pygame及窗口
pygame.init()
pygame.mixer.init()
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("My Game")
clock = pygame.time.Clock()

# 主循环
running = True
while running:
    # 设置刷新频率
    clock.tick(FPS)
    # 输入侦测
    for event in pygame.event.get():
        # 检查窗口关闭操作
        if event.type == pygame.QUIT:
            running = False

    # 更新内容

    # 填充背景色
    screen.fill(BLACK)
    # 刷新
    pygame.display.flip()

pygame.quit()

设置参数

WIDTH = 480
HEIGHT = 600
FPS = 60

添加飞船

# .....
class Player(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((50, 40))
        self.image.fill(GREEN)
        self.rect = self.image.get_rect()
        self.rect.centerx = WIDTH / 2
        self.rect.bottom = HEIGHT - 10
        self.speedx = 0
        
    def update(self):
        self.rect.x += self.speedx

sprite 添加到组，方便一起刷新绘制
all_sprites = pygame.sprite.Group()
player = Player()
all_sprites.add(player)

控制飞船移动 方案1：

for event in pygame.event.get():
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                player.speedx = -8
            if event.key == pygame.K_RIGHT:
                player.speedx = 8

这种方法的问题在于，虽然按下该键会使 Player 移动，但无法停止！方案2：

def update(self):
        self.speedx = 0
        keystate = pygame.key.get_pressed()
        if keystate[pygame.K_LEFT]:
            self.speedx = -8
        if keystate[pygame.K_RIGHT]:
            self.speedx = 8
        self.rect.x += self.speedx

不按键时速度为0 避免飞船跑出屏幕

        if self.rect.right > WIDTH:
            self.rect.right = WIDTH
        if self.rect.left < 0:
            self.rect.left = 0

blank

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1.控制飞机

1.控制飞机

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