12-坦克大战3

坦克大战之实现敌方坦克的随机射击

    def shot(self):
        num = random.randint(1,1000)
        if num  <= 20:
            return Bullet(self)

坦克大战之我方子弹与敌方坦克的碰撞处理

ef hit_tank(self):
        for eTank in MainGame.enemy_tank_list:
            result = pygame.sprite.collide_rect(eTank,self)
            if result:
                self.live = False
                eTank.live = False

坦克大战之实现爆炸效果

class Explode(BaseItem):
    def __init__(self,rect):
        self.images = [
            pygame.image.load('img/blast0.gif'),
            pygame.image.load('img/blast1.gif'),
            pygame.image.load('img/blast2.gif'),
            pygame.image.load('img/blast3.gif'),
            pygame.image.load('img/blast4.gif'),
            pygame.image.load('img/blast5.gif'),
            pygame.image.load('img/blast6.gif')
        ]
        self.rect = rect
        self.image = self.images[0]
        self.live = True
        #记录当前图片的索引
        self.step = 0
    #展示爆炸效果
    def display_explode(self):
        if self.step < len(self.images):
            MainGame.window.blit(self.image,self.rect)
            self.image = self.images[self.step]
            self.step += 1
        else:
            self.live = False
            self.step = 0

坦克大战之敌方子弹与我方坦克的碰撞

 def hit_my_tank(self):
    for eBullet in MainGame.enemy_bullet_list:
        if MainGame.PI_TANK and MainGame.PI_TANK.live:
            result = pygame.sprite.collide_rect(eBullet, MainGame.PI_TANK)
            if result:
                #创建一个爆炸，加入到爆炸效果列表
                explode = Explode(MainGame.PI_TANK.rect)
                MainGame.explode_list.append(explode)
                # 修改状态
                eBullet.live = False
                MainGame.PI_TANK.live = False
            else:
                break

坦克大战之实现墙壁类

class Wall(BaseItem):
    def __init__(self,left,top):
        self.image = pygame.image.load('img/steels.gif')
        self.rect = self.image.get_rect()
        self.rect.left = left
        self.rect.top = top
    def display_wall(self):
        # 将墙壁加到窗口中
        MainGame.window.blit(self.image,self.rect)

坦克大战之实现子弹不能穿墙

def hit_wall(self):
    for wall in MainGame.wall_list:
        result = pygame.sprite.collide_rect(wall, self)
        if result:
           self.live = False

坦克大战之实现坦克不能穿墙

 def move(self):
        #先记录移动之前的坐标（供还原时用）
        self.old_top = self.rect.top
        self.old_left = self.rect.left
        #修改tank的坐标：取决于坦克的方向
        if self.direction == 'U':
            if self.rect.top > 0:
                self.rect.top -= self.speed
        elif self.direction == 'D':
            if self.rect.top < MainGame.SCREEN_HEIGHT-self.rect.height:
                self.rect.top += self.speed
        elif self.direction == 'L':
            if self.rect.left > 0:
                self.rect.left -= self.speed
        elif self.direction == 'R':
            if self.rect.left < MainGame.SCREEN_WIDTH-self.rect.width:
                self.rect.left += self.speed
    # 坦克坐标还原的方法
    def stay(self):
        self.rect.left = self.old_left
        self.rect.top = self.old_top
    # 坦克与墙壁的碰撞方法
    def hit_wall(self):
        for wall in MainGame.wall_list:
            result = pygame.sprite.collide_rect(wall,self)
            if result:
                #碰撞后，调用坐标还原方法
                self.stay()

坦克大战之音效处理

class Musice():
    def __init__(self,music):
        pygame.mixer.init()
        self.music = music
        pygame.mixer.music.load(self.music)
    def play_music(self,count):
        pygame.mixer.music.play(count)