Python+Pygame实战之实现小蜜蜂历险记游戏

import random
import pygame
# 屏幕大小的常量
SCREEN_RECT = pygame.Rect(0, 0, 480, 650)
# 刷新的帧率
FRAME_PER_SEC = 60
# 创建敌机定时器常量
CREATE_ENEMY_EVENT = pygame.USEREVENT
# 创建子弹定时器常量
HERO_FIRE_EVENT = pygame.USEREVENT + 1


class GrameSprite(pygame.sprite.Sprite):
    """"飞机大战游戏精灵类"""

    def __init__(self, image_name, speed=1,speed1=1):
        # 调用父类方法
        super().__init__()
        pygame.image.load(image_name).convert_alpha()

        self.image = pygame.image.load(image_name).convert_alpha()
        self.rect = self.image.get_rect()
        self.speed = speed
        self.speed1=speed1

    def update(self):
        self.rect.y += self.speed


class Background(GrameSprite):
    """背景类"""

    def __init__(self, is_flag=False):
        super().__init__('./images/background1.jpeg')
        if is_flag:
            self.rect.y = -self.rect.height

    def update(self):
        super().update()
        if self.rect.y >= SCREEN_RECT.height:
            self.rect.y = -SCREEN_RECT.height


class Enemy(GrameSprite):
    """"敌机类"""

    def __init__(self):
        super().__init__('./images/enemy0.png')
        self.speed = random.randint(2, 3)
        max_x = SCREEN_RECT.width - self.rect.width
        self.rect.x = random.randint(0, max_x)
        self.rect.bottom = 0

    def __del__(self):
        # print('敌机挂了%s' % self.rect)
        pass

    def update(self):
        super().update()
        if self.rect.y >= SCREEN_RECT.height:
            # kill方法可以将精灵从精灵组中移除，精灵就会被销毁
            self.kill()


class Hero(GrameSprite):
    """英雄类"""

    def __init__(self):
        super().__init__('./images/hero1.png', 0)
        self.rect.centerx = SCREEN_RECT.centerx
        self.rect.bottom = SCREEN_RECT.bottom - 120

        # 创建子弹精灵组
        self.bullet_group = pygame.sprite.Group()

    def update(self):
        self.rect.x += self.speed
        self.rect.y += self.speed1
        if self.rect.x < 0:
            self.rect.x = 0
        elif self.rect.right > SCREEN_RECT.right:
            self.rect.right = SCREEN_RECT.right
        if self.rect.y>SCREEN_RECT.height:
            self.rect.bottom=SCREEN_RECT.height
        elif self.rect.y<0:
            self.rect.bottom=0
            

    def fire(self):
        bullet = Bullet()
        bullet.rect.bottom = self.rect.y - 20
        bullet.rect.centerx = self.rect.centerx
        self.bullet_group.add(bullet)



class Bullet(GrameSprite):
    """子弹类"""

    def __init__(self):
        super().__init__('./images/new_arrow.png', -4)

    def __del__(self):
        pass
        # print('子弹销毁')


    def update(self):
        super().update()
        if self.rect.bottom < 0:
            self.kill()

import pygame
from plame_sprites import *


class PlaneGame(object):
    def __init__(self):
        # 1.创建游戏窗口
        self.screen = pygame.display.set_mode(SCREEN_RECT.size)
        # 2.创建时钟对象
        self.clock = pygame.time.Clock()
        #  3.创建精灵组
        self.__create_speites()
        # 4.设置定时器
        pygame.time.set_timer(CREATE_ENEMY_EVENT, 1000)
        pygame.time.set_timer(HERO_FIRE_EVENT, 500)

    def __create_speites(self):
        bg1 = Background()
        bg2 = Background(True)
        self.back_group = pygame.sprite.Group(bg1, bg2)

        # 创建敌机精灵组
        self.enemy_group = pygame.sprite.Group()

        # 创建英雄
        self.hero = Hero()
        self.hero_group = pygame.sprite.Group( self.hero )

    def __event_handler(self):
        for event in pygame.event.get():
            # 退出
            if event.type == pygame.QUIT:
                PlaneGame.__game_over()
            # 判断事件是不是定时器
            elif event.type == CREATE_ENEMY_EVENT:
                enemy = Enemy()
                self.enemy_group.add(enemy)
            if event.type==pygame.KEYDOWN:
                if event.key==pygame.K_SPACE:
                    self.hero.fire()


            # elif event.type == pygame.KEYDOWN and event.key == pygame.K_RIGHT:
            #     print('按下向右')
        # 获取按下的键盘被按下的键
        keys_pressd = pygame.key.get_pressed()
        #  判断用户按下的方向
        if keys_pressd[pygame.K_RIGHT]:
            self.hero.speed = 3
        elif keys_pressd[pygame.K_LEFT]:
            self.hero.speed = -3
        elif keys_pressd[pygame.K_UP]:
            self.hero.speed1 =-3
        elif keys_pressd[pygame.K_DOWN]:
            self.hero.speed1 = 3
        
            
        else:
            self.hero.speed = 0
            self.hero.speed1=0


    def __check_collide(self):
        # 子弹打飞机
        pygame.sprite.groupcollide(self.hero.bullet_group,self.enemy_group,True,True)

        # 敌机撞英雄
        enemies  = pygame.sprite.spritecollide(self.hero,self.enemy_group,True)

        if len(enemies) > 0:
            self.hero.kill()
            #  清空所有的子弹 精灵组的 子弹
            # self.hero.bullet_group.empty()
            #   停止在事件队列上重复创建子弹事件
            # pygame.time.set_timer(HERO_FIRE_EVENT, 0)
            # Restart = pygame.image.load('./images/restart_sel.png')
            # self.screen.blit(Restart, (0, 0))
            # pygame.display.update()

            PlaneGame.__game_over()



    def __update_sprites(self):
        # 精灵组 更新精灵的位置
        self.back_group.update()
        self.enemy_group.update()
        self.hero_group.update()
        self.hero.bullet_group.update()
        # 绘制所有得精灵
        self.back_group.draw(self.screen)
        self.enemy_group.draw(self.screen)
        self.hero_group.draw(self.screen)
        self.hero.bullet_group.draw(self.screen)


    @staticmethod
    def __game_over():
        pygame.quit()
        exit()


    def start_game(self):
        while True:
            # 1.设置刷新帧率
            self.clock.tick(FRAME_PER_SEC)
            # 2.事件监听
            self.__event_handler()
            # 3.碰撞检测
            self.__check_collide()
            # 4.更新/绘制精灵组
            self.__update_sprites()
            # 5.更新显示
            pygame.display.update()



if __name__ == '__main__':
    game = PlaneGame()
    game.start_game()