写一个坦克大战游戏代码

坦克大战是一个经典的游戏，下面我来写一个基于Python的简单版坦克大战游戏代码。这个游戏是基于Pygame库实现的，需要先安装Pygame库。

import pygame
import random

# 初始化Pygame
pygame.init()

# 定义游戏界面大小
screen_width = 640
screen_height = 480

# 创建游戏界面
screen = pygame.display.set_mode((screen_width, screen_height))

# 设置游戏界面标题
pygame.display.set_caption('坦克大战')

# 加载坦克和子弹图片
tank_image = pygame.image.load('tank.png')
bullet_image = pygame.image.load('bullet.png')

# 定义坦克类
class Tank:
    def __init__(self, x, y):
        self.x = x
        self.y = y
        self.speed = 5
        self.direction = random.choice(['up', 'down', 'left', 'right'])
        self.image = tank_image
        self.rect = self.image.get_rect()
        self.rect.x = self.x
        self.rect.y = self.y
    
    def move(self):
        if self.direction == 'up':
            self.y -= self.speed
        elif self.direction == 'down':
            self.y += self.speed
        elif self.direction == 'left':
            self.x -= self.speed
        elif self.direction == 'right':
            self.x += self.speed
        
        # 边界检测
        if self.x < 0:
            self.x = 0
        elif self.x > screen_width - self.rect.width:
            self.x = screen_width - self.rect.width
        
        if self.y < 0:
            self.y = 0
        elif self.y > screen_height - self.rect.height:
            self.y = screen_height - self.rect.height
        
        self.rect.x = self.x
        self.rect.y = self.y
    
    def fire(self):
        return Bullet(self.x, self.y, self.direction)

# 定义子弹类
class Bullet:
    def __init__(self, x, y, direction):
        self.x = x
        self.y = y
        self.speed = 10
        self.direction = direction
        self.image = bullet_image
        self.rect = self.image.get_rect()
        self.rect.x = self.x
        self.rect.y = self.y
    
    def move(self):
        if self.direction == 'up':
            self.y -= self.speed
        elif self.direction == 'down':
            self.y += self.speed
        elif self.direction == 'left':
            self.x -= self.speed
        elif self.direction == 'right':
            self.x += self.speed
        
        # 边界检测
        if self.x < 0 or self.x > screen_width or self.y < 0 or self.y > screen_height:
            return False
        
        self.rect.x = self.x
        self.rect.y = self.y
        return True

# 创建坦克和子弹
player_tank = Tank(100, 100)
enemy_tank = Tank(400, 300)
bullets = []

# 游戏主循环
running = True
while running:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_SPACE:
                bullets.append(player_tank.fire())
    
    # 移动坦克和子弹
    player_tank.move()
    enemy_tank.move()
    for bullet in bullets:
        if not bullet.move():
            bullets.remove(bullet)
    
    # 绘制游戏界面
    screen.fill((255, 255, 255))
    screen.blit(player_tank.image, player_tank.rect)
    screen.blit(enemy_tank.image, enemy_tank.rect)
    for bullet in bullets:
        screen.blit(bullet.image, bullet.rect)
    pygame.display.update()

# 退出Pygame
pygame.quit()

在这个游戏中，我们定义了两个类：`Tank`表示坦克，`Bullet`表示子弹。在游戏主循环中，我们不断处理事件、移动坦克和子弹、绘制游戏界面。玩家可以按空格键发射子弹。这个游戏还很简陋，你可以根据自己的需要进行扩展和完善，例如添加音效、敌方坦克、障碍物等。