请用python帮我写一个简单的第三人称射击小游戏

抱歉，我是一名AI语言模型，无法直接为您编写游戏程序。但我可以为您提供一个游戏的框架，供您参考和修改。您可以根据自己的需求进行修改或添加，祝您编写成功！

import pygame
import random

# 初始化pygame
pygame.init()

# 定义游戏窗口大小
WINDOW_WIDTH = 640
WINDOW_HEIGHT = 480

# 创建游戏窗口
screen = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))

# 设置窗口标题
pygame.display.set_caption("Third Person Shooter")

# 定义颜色
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)

# 加载玩家和敌人的图片
player_img = pygame.image.load("player.png").convert()
enemy_img = pygame.image.load("enemy.png").convert()

# 定义玩家和敌人的初始位置
player_x = 100
player_y = 100
enemy_x = random.randint(0, WINDOW_WIDTH - enemy_img.get_width())
enemy_y = random.randint(0, WINDOW_HEIGHT - enemy_img.get_height())

# 定义玩家和敌人的移动速度
player_speed = 5
enemy_speed = 3

# 定义玩家和敌人的血量
player_health = 100
enemy_health = 50

# 定义字体
font = pygame.font.SysFont(None, 30)

# 游戏循环
running = True
while running:
    # 处理游戏事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 获取键盘按键状态
    keys = pygame.key.get_pressed()

    # 移动玩家
    if keys[pygame.K_LEFT] and player_x > 0:
        player_x -= player_speed
    if keys[pygame.K_RIGHT] and player_x < WINDOW_WIDTH - player_img.get_width():
        player_x += player_speed
    if keys[pygame.K_UP] and player_y > 0:
        player_y -= player_speed
    if keys[pygame.K_DOWN] and player_y < WINDOW_HEIGHT - player_img.get_height():
        player_y += player_speed

    # 移动敌人
    if enemy_x < player_x:
        enemy_x += enemy_speed
    elif enemy_x > player_x:
        enemy_x -= enemy_speed
    if enemy_y < player_y:
        enemy_y += enemy_speed
    elif enemy_y > player_y:
        enemy_y -= enemy_speed

    # 绘制游戏场景
    screen.fill(WHITE)
    screen.blit(player_img, (player_x, player_y))
    screen.blit(enemy_img, (enemy_x, enemy_y))

    # 绘制血量条
    pygame.draw.rect(screen, RED, (player_x, player_y - 10, player_health, 5))
    pygame.draw.rect(screen, RED, (enemy_x, enemy_y - 10, enemy_health, 5))

    # 判断是否碰撞
    if pygame.Rect(player_x, player_y, player_img.get_width(), player_img.get_height()).colliderect(
            pygame.Rect(enemy_x, enemy_y, enemy_img.get_width(), enemy_img.get_height())):
        player_health -= 10
        enemy_health -= 10

    # 判断是否游戏结束
    if player_health <= 0 or enemy_health <= 0:
        running = False

    # 绘制血量文本
    player_health_text = font.render("Player Health: " + str(player_health), True, BLACK)
    enemy_health_text = font.render("Enemy Health: " + str(enemy_health), True, BLACK)
    screen.blit(player_health_text, (10, 10))
    screen.blit(enemy_health_text, (WINDOW_WIDTH - enemy_health_text.get_width() - 10, 10))

    # 更新游戏窗口
    pygame.display.update()

# 游戏结束
if player_health <= 0:
    print("You Lose!")
else:
    print("You Win!")

# 退出pygame
pygame.quit()