用python做一个坦克大战游戏

好的，下面是一个简单的坦克大战游戏的Python代码：

import pygame
import random

# 初始化游戏
pygame.init()

# 定义游戏屏幕大小
screen_width = 640
screen_height = 480

# 创建游戏屏幕
screen = pygame.display.set_mode((screen_width, screen_height))

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

# 定义坦克类
class Tank:
    def __init__(self, x, y):
        self.x = x
        self.y = y
        self.direction = 'up'
        self.speed = 3
        self.bullets = []

    # 移动坦克
    def move(self):
        if self.direction == 'up':
            if self.y > 0:
                self.y -= self.speed
        elif self.direction == 'down':
            if self.y < screen_height - 50:
                self.y += self.speed
        elif self.direction == 'left':
            if self.x > 0:
                self.x -= self.speed
        elif self.direction == 'right':
            if self.x < screen_width - 50:
                self.x += self.speed

    # 发射子弹
    def fire(self):
        bullet = Bullet(self.x + 20, self.y + 20, self.direction)
        self.bullets.append(bullet)

    # 绘制坦克和子弹
    def draw(self):
        screen.blit(tank_img, (self.x, self.y))
        for bullet in self.bullets:
            bullet.move()
            bullet.draw()

# 定义子弹类
class Bullet:
    def __init__(self, x, y, direction):
        self.x = x
        self.y = y
        self.direction = direction
        self.speed = 5

    # 移动子弹
    def move(self):
        if self.direction == 'up':
            if self.y > 0:
                self.y -= self.speed
            else:
                self.kill()
        elif self.direction == 'down':
            if self.y < screen_height:
                self.y += self.speed
            else:
                self.kill()
        elif self.direction == 'left':
            if self.x > 0:
                self.x -= self.speed
            else:
                self.kill()
        elif self.direction == 'right':
            if self.x < screen_width:
                self.x += self.speed
            else:
                self.kill()

    # 绘制子弹
    def draw(self):
        screen.blit(bullet_img, (self.x, self.y))

    # 移除子弹
    def kill(self):
        tank.bullets.remove(self)

# 创建坦克对象
tank = Tank(300, 400)

# 游戏循环
while True:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                tank.direction = 'up'
            elif event.key == pygame.K_DOWN:
                tank.direction = 'down'
            elif event.key == pygame.K_LEFT:
                tank.direction = 'left'
            elif event.key == pygame.K_RIGHT:
                tank.direction = 'right'
            elif event.key == pygame.K_SPACE:
                tank.fire()

    # 移动坦克和子弹
    tank.move()

    # 绘制背景
    screen.fill((255, 255, 255))

    # 绘制坦克和子弹
    tank.draw()

    # 更新屏幕
    pygame.display.update()

这个游戏还比较简单，你可以根据自己的需求对代码进行修改和扩展。