中途岛海战敌机发射的子弹类模块

这是本人编写的飞机大战中途岛海战的敌机发射的子弹类之模块。以供给有需要的人士。

下面是部分代码预览：

"""
   中途岛海战敌机发射的子弹类
   本程序新建敌机子弹类,子弹有一个目的地,
   它实例化后会朝目的地不断地移动。
"""
import math
import pygame
from pygame.locals import *
from random import randint

class Enemy_Bullet(pygame.sprite.Sprite):
    """
       敌机子弹类      
    """
    def __init__(self,image,pos,dest,screen):
        """
           image:图形,pos:初始坐标,dest:目标,screen:屏幕
        """       

    def update(self):
        """更新"""

def main():
    """主要函数"""
    bg = 'images/海洋.png'
    image = "images/Shot.png"
    width,height = size = 960,720
    center = width//2,height//2
    
    screen = pygame.display.set_mode(size)
    pygame.display.set_caption("中途岛海战敌机发射的子弹类by lixingqiu")
    bg = pygame.image.load(bg)

    # 下面准备把图像缩小
    image = pygame.image.load(image)
    w,h = image.get_size()
    image = pygame.transform.scale(image,(w//2,h//2))
    enemy_bullet_group = pygame.sprite.Group() # 新建敌人组

    pygame.time.set_timer(USEREVENT,100) # 设置自定义事件定时器
    clock = pygame.time.Clock()

    running = True
    while running:
        for event in pygame.event.get():
            if event.type == QUIT:running=False            
            if event.type == USEREVENT:
                x = randint(0,width)
                y = randint(0,height)
                p = image,(x,y),center,screen
                enemy_bullet_group.add(Enemy_Bullet(*p))                
                info = '当前子弹数:'+ str(len(enemy_bullet_group))
                info = info + ',中途岛海战敌机发射的子弹类by lixingqiu'
                pygame.display.set_caption(info)       

        enemy_bullet_group.update()
        screen.blit(bg,(0,0))          # 渲染背景
        enemy_bullet_group.draw(screen)# 画每个子弹
        pygame.display.update()        # 更新显示
        clock.tick(60)
        
    pygame.quit()

if __name__ == "__main__":

    main()

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