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import pygame
import time

# 初始化 Pygame
pygame.init()

# 设置游戏屏幕大小，标题及背景颜色
screen_width = 600
screen_height = 800
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("飞机大战")
background = (255, 255, 255) # 白色背景

# 加载游戏资源图片
player_img = pygame.image.load('player.png')
enemy_img = pygame.image.load('enemy.png')
bullet_img = pygame.image.load('bullet.png')

# 定义游戏角色类
class Character:
def __init__(self, x, y, img):
self.x = x
self.y = y
self.img = img

def draw(self):
screen.blit(self.img, (self.x, self.y))

# 定义玩家类
class Player(Character):
def __init__(self, x, y, img):
super().__init__(x, y, img)
self.speed = 5
self.bullets = []

def move_left(self):
self.x -= self.speed

def move_right(self):
self.x += self.speed

def fire(self):
bullet = Bullet(self.x + 45, self.y - 20, bullet_img)
self.bullets.append(bullet)

# 定义敌人类
class Enemy(Character):
def __init__(self, x, y, img):
super().__init__(x, y, img)
self.speed = 3

def update(self):
self.y += self.speed

# 定义子弹类
class Bullet(Character):
def __init__(self, x, y, img):
super().__init__(x, y, img)
self.speed = 10

def update(self):
self.y -= self.speed

# 创建游戏角色实例
player = Player(275, 700, player_img)
enemies = [Enemy(100, 50, enemy_img), Enemy(250, 50, enemy_img), Enemy(400, 50, enemy_img)]

# 游戏循环
while True:
# 监听游戏事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()

# 游戏逻辑

# 玩家移动
keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT]:
player.move_left()
if keys[pygame.K_RIGHT]:
player.move_right()

# 玩家发射子弹
if keys[pygame.K_SPACE]:
player.fire()

# 子弹移动
for bullet in player.bullets:
bullet.update()
if bullet.y < 0:
player.bullets.remove(bullet)

# 敌人移动及碰撞检测
for enemy in enemies:
enemy.update()
if enemy.y > screen_height:
enemies.remove(enemy)
for bullet in player.bullets:
if bullet.x > enemy.x and bullet.x < enemy.x + 50 and bullet.y > enemy.y and bullet.y < enemy.y + 50:
enemies.remove(enemy)
player.bullets.remove(bullet)

# 绘制游戏图像
screen.fill(background)
player.draw()
for enemy in enemies:
enemy.draw()
for bullet in player.bullets:
bullet.draw()
pygame.display.flip()

# 游戏帧率控制
time.sleep(0.01)

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