用pygame编程实现军舰拦截导弹，实现多搜军舰合作拦截多枚敌方导弹，军舰位置坐标已知，每种己方导弹拦截成功概率和作用范围已知，已知己方导弹数量和己方导弹发射成本，已知敌方导弹位置，约束条件为己方导弹只有在作用范围内才能拦截敌方导弹

在pygame中模拟军舰拦截导弹可以使用事件驱动的编程模式，结合角色移动和碰撞检测来实现。这里给出一个简化版的示例，假设我们有一个简单的场景，其中军舰和导弹都是由矩形表示的：

1. **初始化**[^1]:

   import pygame, random
   from pygame.locals import *

   screen_width, screen_height = 800, 600
   ship_size = 50
   missile_radius = 10
   max_missiles = 10
   missile_cost = 50
   ship_positions = [(screen_width//2, screen_height//2)] # 假设只有一个初始军舰位置

   pygame.init()
   screen = pygame.display.set_mode((screen_width, screen_height))

2. **创建军舰和导弹**:

   def create_ships(screen):
       ships = []
       for pos in ship_positions:
           ship = pygame.Rect(pos[0]-ship_size//2, pos[1]-ship_size//2, ship_size, ship_size)
           ships.append(ship)
       return ships

   def create_missiles(screen, ships, missile_prob, range_limit):
       missiles = []
       for _ in range(min(max_missiles, len(ships))):
           if random.random() < missile_prob:
               missile_pos = random.choice(ships).center
               missile = pygame.Rect(missile_pos[0]-missile_radius, missile_pos[1]-missile_radius, missile_radius*2, missile_radius*2)
               missiles.append(missile)
       return missiles

3. **检测碰撞**:

   def check_collision(ship, missile):
       distance = (ship.centerx - missile.centerx)**2 + (ship.centery - missile.centery)**2
       if distance < missile.width**2:
           return True
       else:
           return False

4. **游戏循环**:

   running = True
   while running:
       for event in pygame.event.get():
           if event.type == QUIT or (event.type == KEYDOWN and event.key == K_ESCAPE):
               running = False

       # 更新军舰位置（此处仅示例，实际游戏中可能涉及复杂的AI决策）
       for ship in ships:
           ship.x += 5  # 军舰向右移动

       # 创建新导弹并更新屏幕
       missiles = create_missiles(screen, ships, 0.5, 100)  # 每次迭代生成一半的概率，作用范围100像素内
       screen.fill((0, 0, 0))  # 清屏
       for missile in missiles:
           pygame.draw.rect(screen, (255, 0, 0), missile)  # 绘制红色导弹
       for ship in ships:
           pygame.draw.rect(screen, (0, 255, 0), ship)  # 绘制绿色军舰
       for missile in missiles:
           for ship in ships:
               if check_collision(ship, missile):
                   # 如果碰撞，处理逻辑（如消耗一枚导弹，敌方减分等）
                   pass

       pygame.display.flip()

   pygame.quit()