Python编写坦克大战(新增无敌模式)

新增功能: 
1、q键直接退出游戏  -》  进行结算然后返回模式选择界面
2、 新增全屏按钮u ，并且切换的时候会造成3s的冻结效果
3、静音键m
4、暂停键p
5、无敌模式，进入下一关条件是只能打败20个坦克
6、代码注释完整
7、z键打印当前坦克的情况
8、可自定义地图
9、可自定义起始关卡

#!/usr/bin/python
# coding=utf-8
import datetime
import os, pygame, time, random, uuid, sys, psutil
from datetime import date
from time import ctime, sleep


# 矩阵的 长宽高
class myRect(pygame.Rect):
    """ 添加类型属性 """

    def __init__(self, left, top, width, height, type):
        # 矩阵位置
        pygame.Rect.__init__(self, left, top, width, height)
        self.type = type

# 获得一个唯一的随机的uid
class Timer(object):
    def __init__(self):
        self.timers = []

    # 获得一个唯一的随机的uid

    def add(self, interval, f, repeat=-1):
        options = {"interval": interval, "callback": f, "repeat": repeat, "times": 0, "time": 0, "uuid": uuid.uuid4()
                   # 生成一个随机的UUID
                   }
        self.timers.append(options)

        return options["uuid"]

    #  销毁指定的uid(uuid_nr)

    def destroy(self, uuid_nr):
        for timer in self.timers:
            if timer["uuid"] == uuid_nr:
                self.timers.remove(timer)
                return

    # 定时器
    def update(self, time_passed):
        for timer in self.timers:
            timer["time"] += time_passed
            if timer["time"] > timer["interval"]:
                timer["time"] -= timer["interval"]
                timer["times"] += 1
                if timer["repeat"] > -1 and timer["times"] == timer["repeat"]:
                    self.timers.remove(timer)
                try:
                    timer["callback"]()
                except:
                    try:
                        self.timers.remove(timer)
                    except:
                        pass


# 堡垒类
class Castle():
    """ Player's castle/fortress 堡垒的位置"""

    (STATE_STANDING, STATE_DESTROYED, STATE_EXPLODING) = range(3)

    def __init__(self):

        global sprites

        # images ,subsurface()从父表面创建一个新表面
        self.img_undamaged = sprites.subsurface(0, 15 * 2, 16 * 2, 16 * 2)
        self.img_destroyed = sprites.subsurface(16 * 2, 15 * 2, 16 * 2, 16 * 2)

        # init position 初始化位置
        self.rect = pygame.Rect(12 * 16, 24 * 16, 32, 32)

        # start w/ undamaged and shiny castle从未损坏和闪亮的城堡开始
        self.rebuild()


    def draw(self):
        """ Draw castle 画一个城堡"""
        global screen
        # blit()对图片进行操作,将一个平面的一部分或全部图象整块从这个平面复制到另一个平面
        screen.blit(self.image, self.rect.topleft)
        # 判断城堡是否被扎破
        if self.state == self.STATE_EXPLODING:
            if not self.explosion.active:
                self.state = self.STATE_DESTROYED
                del self.explosion
            else:
                self.explosion.draw()

    def rebuild(self):
        """ Reset castle重置城堡 """
        self.state = self.STATE_STANDING
        self.image = self.img_undamaged  # 城堡完整的图片
        self.active = True

    def destroy(self):
        """ Destroy castle 销毁城堡"""
        self.state = self.STATE_EXPLODING
        self.explosion = Explosion(self.rect.topleft)  # 图片的左上被销毁
        self.image = self.img_destroyed  # 城堡被销毁的图片
        if god == False:
            self.active = False

# 道具
class Bonus():
    """ Various power-ups 各种道具
    When bonus is spawned, it begins flashing and after some time dissapears当奖励产生时，它开始闪烁，一段时间后消失

    Available bonusses:  可用奖励列表
        手雷grenade	: Picking up the grenade power up instantly wipes out ever enemy presently on the screen, including Armor Tanks regardless of how many times you've hit them. You do not, however, get credit for destroying them during the end-stage bonus points.
        头盔helmet	: The helmet power up grants you a temporary force field that makes you invulnerable to enemy shots, just like the one you begin every stage with.
        铲子shovel	: The shovel power up turns the walls around your fortress from brick to stone. This makes it impossible for the enemy to penetrate the wall and destroy your fortress, ending the game prematurely. The effect, however, is only temporary, and will wear off eventually.
        星星star		: The star power up grants your tank with new offensive power each time you pick one up, up to three times. The first star allows you to fire your bullets as fast as the power tanks can. The second star allows you to fire up to two bullets on the screen at one time. And the third star allows your bullets to destroy the otherwise unbreakable steel walls. You carry this power with you to each new stage until you lose a life.
        坦克tank		: The tank power up grants you one extra life. The only other way to get an extra life is to score 20000 points.
        定时器timer		: The timer power up temporarily freezes time, allowing you to harmlessly approach every tank and destroy them until the time freeze wears off.
手雷:拿起手雷的电源，立即清除屏幕上的任何敌人，包括装甲坦克，无论你击中他们多少次。但是，你不会因为在最后阶段摧毁它们而得到积分。

头盔:头盔能量提升给你一个临时力场，使你对敌人的射击无坚不摧，就像你在每个阶段开始的时候一样。

铲子:铲子的力量把堡垒周围的墙从砖变成石头。这使得敌人不可能穿透墙壁并摧毁你的堡垒，从而提前结束游戏。然而，这种影响只是暂时的，最终会逐渐消失。

星型:每次你拿起一辆星型坦克，它就会给你的坦克提供新的进攻能力，最多三次。第一颗星可以让你发射子弹的速度与动力坦克一样快。
第二颗星允许你在屏幕上同时发射两颗子弹。第三颗星可以让你的子弹摧毁原本坚不可摧的钢铁墙。你带着这种力量进入每一个新的阶段，直到你失去一条生命。

坦克:坦克的能量增加可以让你多活一次。获得额外生命的唯一方法是获得20000分。

定时器:定时器暂时冻结时间，允许你无害地接近每一辆坦克并摧毁它们，直到冻结时间消失。

    """

    # bonus types 道具类型
    (BONUS_GRENADE, BONUS_HELMET, BONUS_SHOVEL, BONUS_STAR, BONUS_TANK, BONUS_TIMER) = range(6)

    def __init__(self, level):
        global sprites

        # to know where to place 在哪个地图(关卡)
        self.level = level

        # bonus lives only for a limited period of time 奖励只在有限的一段时间内有效
        self.active = True

        # blinking state 闪烁状态
        self.visible = True

        # 道具随机出现的地点
        self.rect = pygame.Rect(random.randint(0, 416 - 32), random.randint(0, 416 - 32), 32, 32)

        # 随机选一个道具
        self.bonus = random.choice(
            [self.BONUS_GRENADE, self.BONUS_HELMET, self.BONUS_SHOVEL, self.BONUS_STAR, self.BONUS_TANK,
             self.BONUS_TIMER])

        self.image = sprites.subsurface(16 * 2 * self.bonus, 32 * 2, 16 * 2, 15 * 2)

    def draw(self):
        """ draw bonus 画道具"""
        global screen
        if self.visible:
            screen.blit(self.image, self.rect.topleft)

    def toggleVisibility(self):
        """ Toggle bonus visibility 道具开关可见??"""
        self.visible = not self.visible  # self.visible = self.visible


# 子弹
class Bullet():
    # direction constants 子弹的方向的常量
    (DIR_UP, DIR_RIGHT, DIR_DOWN, DIR_LEFT) = range(4)

    # bullet's stated 声明子弹
    (STATE_REMOVED, STATE_ACTIVE, STATE_EXPLODING) = range(3)

    (OWNER_PLAYER, OWNER_ENEMY) = range(2)

    # 子弹初始化是:damage = 100, speed = 5
    def __init__(self, level, position, direction, damage=100, speed=5):

        global sprites

        self.level = level
        self.direction = direction
        self.damage = damage
        self.owner = None
        self.owner_class = None

        # 1-regular everyday normal bullet常规子弹
        # 2-can destroy steel能摧毁钢铁的子弹
        self.power = 1  # 1/2

        self.image = sprites.subsurface(75 * 2, 74 * 2, 3 * 2, 4 * 2)

        # position is player's top left corner, so we'll need to子弹位置在坦克的左上角
        # recalculate a bit. also rotate image itself.旋转图像本身
        if direction == self.DIR_UP:
            self.rect = pygame.Rect(position[0] + 11, position[1] - 8, 6, 8)
        elif direction == self.DIR_RIGHT:
            self.image = pygame.transform.rotate(self.image, 270)
            self.rect = pygame.Rect(position[0] + 26, position[1] + 11, 8, 6)
        elif direction == self.DIR_DOWN:
            self.image = pygame.transform.rotate(self.image, 180)
            self.rect = pygame.Rect(position[0] + 11, position[1] + 26, 6, 8)
        elif direction == self.DIR_LEFT:
            self.image = pygame.transform.rotate(self.image, 90)
            self.rect = pygame.Rect(position[0] - 8, position[1] + 11, 8, 6)

        self.explosion_images = [  # 子弹爆炸图片
            sprites.subsurface(0, 80 * 2, 32 * 2, 32 * 2), sprites.subsurface(32 * 2, 80 * 2, 32 * 2, 32 * 2), ]

        self.speed = speed

        self.state = self.STATE_ACTIVE

    def find(self):
        print "玩家射出的子弹移伤害为:" + str(self.damage) +",子弹飞行速度为:" + str(self.speed)

    def draw(self):
        """ draw bullet 画子弹"""
        global screen
        if self.state == self.STATE_ACTIVE:  # 子弹射出的时候的样子
            screen.blit(self.image, self.rect.topleft)
        elif self.state == self.STATE_EXPLODING:  # 子弹爆炸时候的样子
            self.explosion.draw()

    def update(self):
        global castle, players, enemies, bullets  # 城堡,玩家,敌人,子弹

        if self.state == self.STATE_EXPLODING:
            if not self.explosion.active:
                self.destroy()
                del self.explosion

        if self.state != self.STATE_ACTIVE:
            return

        """ move bullet 子弹移动"""
        if self.direction == self.DIR_UP:
            self.rect.topleft = [self.rect.left, self.rect.top - self.speed]
            if self.rect.top < 0:
                if play_sounds and self.owner == self.OWNER_PLAYER:
                    try:
                        sounds["steel"].play()
                        # time.sleep(1)
                    except:
                        print "无法播放子弹击中屏幕顶端墙边bgm"
                        print "子弹从顶端到底部花了"
                self.explode()
                return
        elif self.direction == self.DIR_RIGHT:
            self.rect.topleft = [self.rect.left + self.speed, self.rect.top]
            if self.rect.left > (416 - self.rect.width):
                if play_sounds and self.owner == self.OWNER_PLAYER:
                    try:
                        sounds["steel"].play()
                    except:
                        print "无法播放子弹击中屏幕右边墙边bgm"
                self.explode()
                return
        elif self.direction == self.DIR_DOWN:
            self.rect.topleft = [self.rect.left, self.rect.top + self.speed]
            if self.rect.top > (416 - self.rect.height):
                if play_sounds and self.owner == self.OWNER_PLAYER:
                    try:
                        sounds["steel"].play()
                    except:
                        print "无法播放子弹击中屏幕下面墙边bgm"
                self.explode()
                return
        elif self.direction == self.DIR_LEFT:
            self.rect.topleft = [self.rect.left - self.speed, self.rect.top]
            if self.rect.left < 0:
                if play_sounds and self.owner == self.OWNER_PLAYER:
                    try:
                        sounds["steel"].play()
                    except:
                        print "无法播放子弹击中屏幕左边墙边bgm"
                self.explode()
                return
        # 是否冲突
        has_collided = False

        # check for collisions with walls. one bullet can destroy several (1 or 2) 检查是否与墙壁碰撞。一颗子弹可以摧毁数颗(1颗或2颗)
        # tiles but explosion remains 1   打到瓷砖，但依然显示爆炸特效
        rects = self.level.obstacle_rects
        collisions = self.rect.collidelistall(rects)  # collidelistall 冲突(爆炸)列表
        if collisions != []:
            for i in collisions:
                if self.level.hitTile(rects[i].topleft, self.power, self.owner == self.OWNER_PLAYER):
                    has_collided = True
        if has_collided:
            self.explode()
            return

        # check for collisions with other bullets 检查是否与其他子弹发生碰撞
        for bullet in bullets:
            if self.state == self.STATE_ACTIVE and bullet.owner != self.owner and bullet != self and self.rect.colliderect(
                    bullet.rect):
                self.explode()
                return

        # check for collisions with players 检查是否与玩家发生碰撞
        for player in players:
            if player.state == player.STATE_ALIVE and self.rect.colliderect(player.rect):
                if player.bulletImpact(self.owner == self.OWNER_PLAYER, self.damage, self.owner_class):
                    self.destroy()
                    return

        # check for collisions with enemies检查与敌人的碰撞
        for enemy in enemies:
            if enemy.state == enemy.STATE_ALIVE and self.rect.colliderect(enemy.rect):
                if enemy.bulletImpact(self.owner == self.OWNER_ENEMY, self.damage, self.owner_class):
                    self.destroy()
                    return

        # check for collision with castle 检查是否与城堡发生碰撞
        if castle.active and self.rect.colliderect(castle.rect):
            castle.destroy()
            self.destroy()
            return

    def explode(self):
        """ start bullets's explosion 开始子弹爆炸"""
        global screen
        if self.state != self.STATE_REMOVED:
            self.state = self.STATE_EXPLODING
            self.explosion = Explosion([self.rect.left - 13, self.rect.top - 13], None, self.explosion_images)

    def destroy(self):
        self.state = self.STATE_REMOVED


# 标签类(游戏画面的右边)
class Label():
    def __init__(self, position, text="", duration=None):
        self.position = position

        self.active = True

        self.text = text

        self.font = pygame.font.SysFont("Arial", 13)  # 字体

        if duration != None:  # duration
            gtimer.add(duration, lambda: self.destroy(), 1)

    def draw(self):
        """ draw label 画标签"""
        global screen
        screen.blit(self.font.render(self.text, False, (200, 200, 200)), [self.position[0] + 20, self.position[1] + 8])

    def destroy(self):
        self.active = False


# 爆炸类
class Explosion():
    def __init__(self, position, interval=None, images=None):

        global sprites

        self.position = [position[0] - 16, position[1] - 16]
        self.active = True

        if interval == None:
            interval = 100

        if images == None:
            images = [sprites.subsurface(0, 80 * 2, 32 * 2, 32 * 2), sprites.subsurface(32 * 2, 80 * 2, 32 * 2, 32 * 2),
                      sprites.subsurface(64 * 2, 80 * 2, 32 * 2, 32 * 2)]

        images.reverse()

        self.images = [] + images

        self.image = self.images.pop()

        gtimer.add(interval, lambda: self.update(), len(self.images) + 1)

    def draw(self):
        global screen
        """ draw current explosion frame """
        screen.blit(self.image, self.position)

    def update(self):
        """ Advace to the next image """
        if len(self.images) > 0:
            self.image = self.images.pop()
        else:
            self.active = False


# 瓷砖
class Level():
    # tile constants
    (TILE_EMPTY, TILE_BRICK, TILE_STEEL, TILE_WATER, TILE_GRASS, TILE_FROZE) = range(6)

    # tile width/height in px平铺宽度/高度 16个像素(px)
    TILE_SIZE = 16

    def __init__(self, level_nr=None):
        """ There are total 35 different levels. If level_nr is larger than 35, loop over
        to next according level so, for example, if level_nr ir 37, then load level 2
        总共有35个不同的等级。如果level_nr大于35，循环;例如，如果level_nr ir 37，则加载level 2
        """

        global sprites

        # max number of enemies simultaneously  being on map 最大数量的敌人同时在地图上是4
        self.max_active_enemies = 4

        tile_images = [pygame.Surface((8 * 2, 8 * 2)), sprites.subsurface(48 * 2, 64 * 2, 8 * 2, 8 * 2),
                       sprites.subsurface(48 * 2, 72 * 2, 8 * 2, 8 * 2),
                       sprites.subsurface(56 * 2, 72 * 2, 8 * 2, 8 * 2),
                       sprites.subsurface(64 * 2, 64 * 2, 8 * 2, 8 * 2),
                       sprites.subsurface(64 * 2, 64 * 2, 8 * 2, 8 * 2),
                       sprites.subsurface(72 * 2, 64 * 2, 8 * 2, 8 * 2),
                       sprites.subsurface(64 * 2, 72 * 2, 8 * 2, 8 * 2)]
        self.tile_empty = tile_images[0]
        self.tile_brick = tile_images[1]
        self.tile_steel = tile_images[2]
        self.tile_grass = tile_images[3]
        self.tile_water = tile_images[4]
        self.tile_water1 = tile_images[4]
        self.tile_water2 = tile_images[5]
        self.tile_froze = tile_images[6]

        self.obstacle_rects = []

        # 关卡等级
        level_nr = 1 if level_nr == None else level_nr % 35
        if level_nr == 0:
            level_nr = 35

        self.loadLevel(level_nr)

        # tiles' rects on map, tanks cannot move over 瓷砖在地图上的rects，坦克不能移动
        self.obstacle_rects = []

        # update these tiles 更新障碍物列表
        self.updateObstacleRects()

        gtimer.add(400, lambda: self.toggleWaves())

    # 根据子弹是1还是2来更新子弹打的显示效果
    def hitTile(self, pos, power=1, sound=False):
        """
            Hit the tile
            @param pos Tile's x, y in px
            @return True if bullet was stopped, False otherwise 如果子弹被停止，返回True，否则返回False
        """

        global play_sounds, sounds

        for tile in self.mapr:
            if tile.topleft == pos:
                if tile.type == self.TILE_BRICK:
                    if play_sounds and sound:
                        try:
                            sounds["brick"].play()
                        except:
                            print "无法播放子弹击中墙砖时bgm"
                    self.mapr.remove(tile)
                    self.updateObstacleRects()
                    return True
                elif tile.type == self.TILE_STEEL:
                    if play_sounds and sound:
                        try:
                            sounds["steel"].play()
                        except:
                            print "无法播放子弹击中墙砖时bgm"
                    if power == 2:  # 能摧毁钢铁的子弹为2
                        self.mapr.remove(tile)
                        self.updateObstacleRects()
                    return True
                else:
                    return False

    def toggleWaves(self):
        """ Toggle water image 切换图片"""
        if self.tile_water == self.tile_water1:
            self.tile_water = self.tile_water2
        else:
            self.tile_water = self.tile_water1

    def loadLevel(self, level_nr=1):
        """ Load specified level 加载指定关卡等级
        @return boolean Whether level was loaded 返回的是布尔值,是-加载 , 否-没有加载
        """

        filename = "levels/" + str(level_nr)  # 读取关卡文件
        if (not os.path.isfile(filename)):
            return False
        level = []
        f = open(filename, "r")
        data = f.read().split("\n")
        self.mapr = []
        x, y = 0, 0
        for row in data:  # 把文件的符号翻译成对应的瓷砖类型
            for ch in row:
                if ch == "#":
                    self.mapr.append(myRect(x, y, self.TILE_SIZE, self.TILE_SIZE, self.TILE_BRICK))
                elif ch == "@":
                    self.mapr.append(myRect(x, y, self.TILE_SIZE, self.TILE_SIZE, self.TILE_STEEL))
                elif ch == "~":
                    self.mapr.append(myRect(x, y, self.TILE_SIZE, self.TILE_SIZE, self.TILE_WATER))
                elif ch == "%":
                    self.mapr.append(myRect(x, y, self.TILE_SIZE, self.TILE_SIZE, self.TILE_GRASS))
                elif ch == "-":
                    self.mapr.append(myRect(x, y, self.TILE_SIZE, self.TILE_SIZE, self.TILE_FROZE))
                x += self.TILE_SIZE
            x = 0
            y += self.TILE_SIZE
        return True

    def draw(self, tiles=None):
        """ Draw specified map on top of existing surface 在现有表面上绘制指定的地图"""

        global screen

        if tiles == None:
            tiles = [TILE_BRICK, TILE_STEEL, TILE_WATER, TILE_GRASS, TILE_FROZE]

        for tile in self.mapr:  # 开始画图
            if tile.type in tiles:
                if tile.type == self.TILE_BRICK:
                    screen.blit(self.tile_brick, tile.topleft)
                elif tile.type == self.TILE_STEEL:
                    screen.blit(self.tile_steel, tile.topleft)
                elif tile.type == self.TILE_WATER:
                    screen.blit(self.tile_water, tile.topleft)
                elif tile.type == self.TILE_FROZE:
                    screen.blit(self.tile_froze, tile.topleft)
                elif tile.type == self.TILE_GRASS:
                    screen.blit(self.tile_grass, tile.topleft)

    def updateObstacleRects(self):
        """ Set self.obstacle_rects to all tiles' rects that players can destroy
        with bullets 设定可以摧毁瓷砖的子弹"""

        global castle

        self.obstacle_rects = [castle.rect]

        for tile in self.mapr:
            if tile.type in (self.TILE_BRICK, self.TILE_STEEL, self.TILE_WATER):
                self.obstacle_rects.append(tile)

    def buildFortress(self, tile):
        """ Build walls around castle made from tile 用瓷砖在城堡周围筑墙"""

        positions = [(11 * self.TILE_SIZE, 23 * self.TILE_SIZE), (11 * self.TILE_SIZE, 24 * self.TILE_SIZE),
                     (11 * self.TILE_SIZE, 25 * self.TILE_SIZE), (14 * self.TILE_SIZE, 23 * self.TILE_SIZE),
                     (14 * self.TILE_SIZE, 24 * self.TILE_SIZE), (14 * self.TILE_SIZE, 25 * self.TILE_SIZE),
                     (12 * self.TILE_SIZE, 23 * self.TILE_SIZE), (13 * self.TILE_SIZE, 23 * self.TILE_SIZE)]

        obsolete = []

        for i, rect in enumerate(self.mapr):
            if rect.topleft in positions:
                obsolete.append(rect)
        for rect in obsolete:
            self.mapr.remove(rect)

        for pos in positions:
            self.mapr.append(myRect(pos[0], pos[1], self.TILE_SIZE, self.TILE_SIZE, tile))

        self.updateObstacleRects()


#  坦克类
class Tank():
    # possible directions 可能会出现的位置
    (DIR_UP, DIR_RIGHT, DIR_DOWN, DIR_LEFT) = range(4)

    # states 坦克的状态
    (STATE_SPAWNING, STATE_DEAD, STATE_ALIVE, STATE_EXPLODING) = range(4)

    # sides  坦克类型:玩家\机器人
    (SIDE_PLAYER, SIDE_ENEMY) = range(2)

    def __init__(self, level, side, position=None, direction=None, filename=None):

        global sprites

        # health. 0 health means dead,健康。0健康意味着死亡/坦克默认是100血
        self.health = 100

        # tank can't move but can rotate and shoot 坦克不能移动，但可以旋转和射击
        self.paralised = False

        # tank can't do anything 坦克什么也做不了
        self.paused = False

        # tank is protected from bullets 坦克不受子弹的伤害
        self.shielded = False

        self.speed = 2
        # how many bullets can tank fire simultaneously 坦克能同时发射多少子弹
        self.max_active_bullets = 1

        self.side = side

        # flashing state. 0-off, 1-on  坦克闪烁状态 0 不闪烁, 1 闪烁
        self.flash = 0

        # 0 - no superpowers
        # 1 - faster bullets
        # 2 - can fire 2 bullets
        # 3 - can destroy steel
        """
            0 -没有超能力
            1-更快的子弹
            2 -可以发射2颗子弹
            3-能摧毁钢铁
        """
        self.superpowers = 0

        # each tank can pick up 1 bonus 每个坦克可以获得1加值
        self.bonus = None

        # navigation keys: fire, up, right, down, left 坦克移动键:火，上，右，下，左
        self.controls = [pygame.K_SPACE, pygame.K_UP, pygame.K_RIGHT, pygame.K_DOWN, pygame.K_LEFT]

        # currently pressed buttons (navigation only)当前按下的按钮(仅供导航)  坦克有4个键位
        self.pressed = [False] * 4

        self.shield_images = [  # 坦克的盾
            sprites.subsurface(0, 48 * 2, 16 * 2, 16 * 2), sprites.subsurface(16 * 2, 48 * 2, 16 * 2, 16 * 2)]
        self.shield_image = self.shield_images[0]
        self.shield_index = 0

        self.spawn_images = [  # 坦克刚下来的样子?
            sprites.subsurface(32 * 2, 48 * 2, 16 * 2, 16 * 2), sprites.subsurface(48 * 2, 48 * 2, 16 * 2, 16 * 2)]
        self.spawn_image = self.spawn_images[0]
        self.spawn_index = 0

        self.level = level

        if position != None:
            self.rect = pygame.Rect(position, (26, 26))
        else:
            self.rect = pygame.Rect(0, 0, 26, 26)

        if direction == None:
            self.direction = random.choice([self.DIR_RIGHT, self.DIR_DOWN, self.DIR_LEFT])
        else:
            self.direction = direction

        self.state = self.STATE_SPAWNING

        # spawning animation 坦克生成的动画?
        self.timer_uuid_spawn = gtimer.add(100, lambda: self.toggleSpawnImage())

        # duration of spawning 坦克生成的时间?
        self.timer_uuid_spawn_end = gtimer.add(1000, lambda: self.endSpawning())

    def endSpawning(self):
        """ End spawning Player becomes operational 从生产状态转变为玩家操控状态
        """
        self.state = self.STATE_ALIVE
        gtimer.destroy(self.timer_uuid_spawn_end)

    def toggleSpawnImage(self):
        """ advance to the next spawn image 推进到下一个衍生图像"""
        if self.state != self.STATE_SPAWNING:
            gtimer.destroy(self.timer_uuid_spawn)
            return
        self.spawn_index += 1
        if self.spawn_index >= len(self.spawn_images):
            self.spawn_index = 0
        self.spawn_image = self.spawn_images[self.spawn_index]

    # 护盾图像
    def toggleShieldImage(self):
        """ advance to the next shield image进入下一个盾牌图像 """
        if self.state != self.STATE_ALIVE:
            gtimer.destroy(self.timer_uuid_shield)
            return
        if self.shielded:
            self.shield_index += 1
            if self.shield_index >= len(self.shield_images):
                self.shield_index = 0
            self.shield_image = self.shield_images[self.shield_index]

    def draw(self):
        """ draw tank 画坦克"""
        global screen
        if self.state == self.STATE_ALIVE:
            screen.blit(self.image, self.rect.topleft)
            if self.shielded:
                screen.blit(self.shield_image, [self.rect.left - 3, self.rect.top - 3])
        elif self.state == self.STATE_EXPLODING:
            self.explosion.draw()
        elif self.state == self.STATE_SPAWNING:
            screen.blit(self.spawn_image, self.rect.topleft)

    def explode(self):
        """ start tanks's explosion 开始坦克的爆炸"""
        if self.state != self.STATE_DEAD:
            self.state = self.STATE_EXPLODING
            self.explosion = Explosion(self.rect.topleft)

            if self.bonus:
                self.spawnBonus()

    # 坦克发射子弹
    def fire(self, forced=False):
        """ Shoot a bullet 坦克射出一个子弹
        @param boolean forced. If false, check whether tank has exceeded his bullet quota. Default: True 如果错误，检查坦克是否超过子弹限额。默认值:真正的
        @return boolean True if bullet was fired, false otherwise 如果子弹被发射，为真，否则为假
        """

        global bullets, labels

        if self.state != self.STATE_ALIVE:
            gtimer.destroy(self.timer_uuid_fire)
            return False

        if self.paused:
            return False

        if not forced:
            active_bullets = 0
            for bullet in bullets:
                if bullet.owner_class == self and bullet.state == bullet.STATE_ACTIVE:
                    active_bullets += 1
            if active_bullets >= self.max_active_bullets:
                return False

        bullet = Bullet(self.level, self.rect.topleft, self.direction)

        # 坦克超能力
        # if superpower level is at least 1 如果子弹速度超能力级别至少为1
        if self.superpowers > 0:
            bullet.speed = 8  # 子弹速度是8

        # if superpower level is at least 3 如果超能力等级至少为3
        if self.superpowers > 2:  # 子弹为2
            bullet.power = 2

        if self.side == self.SIDE_PLAYER:
            bullet.owner = self.SIDE_PLAYER
        else:
            bullet.owner = self.SIDE_ENEMY
            self.bullet_queued = False

        bullet.owner_class = self
        bullets.append(bullet)
        return True

    # 坦克根据方向键旋转
    def rotate(self, direction, fix_position=True):
        """ Rotate tank
        rotate, update image and correct position 旋转槽旋转，更新图像和正确的位置
        """
        self.direction = direction

        if direction == self.DIR_UP:
            self.image = self.image_up
        elif direction == self.DIR_RIGHT:
            self.image = self.image_right
        elif direction == self.DIR_DOWN:
            self.image = self.image_down
        elif direction == self.DIR_LEFT:
            self.image = self.image_left

        if fix_position:
            new_x = self.nearest(self.rect.left, 8) + 3
            new_y = self.nearest(self.rect.top, 8) + 3

            if (abs(self.rect.left - new_x) < 5):
                self.rect.left = new_x

            if (abs(self.rect.top - new_y) < 5):
                self.rect.top = new_y

    # 把坦克转向相反的方向
    def turnAround(self):
        """ Turn tank into opposite direction 把坦克转向相反的方向"""
        if self.direction in (self.DIR_UP, self.DIR_RIGHT):
            self.rotate(self.direction + 2, False)
        else:
            self.rotate(self.direction - 2, False)

    # 更新计时器和爆炸
    def update(self, time_passed):
        """ Update timer and explosion (if any) 更新计时器和爆炸(如果有的话)"""
        if self.state == self.STATE_EXPLODING:
            if not self.explosion.active:
                self.state = self.STATE_DEAD
                del self.explosion

    # 整数到最能整除的数
    def nearest(self, num, base):
        """ Round number to nearest divisible ??整数到最能整除的数"""
        return int(round(num / (base * 1.0)) * base)

    # 如果子弹在撞击时被摧毁，返回True , 只有敌人交火才是False
    def bulletImpact(self, friendly_fire=False, damage=100, tank=None):
        """ Bullet impact
        Return True if bullet should be destroyed on impact. Only enemy friendly-fire 如果子弹在撞击时被摧毁，返回True。只有敌人交火
        doesn't trigger bullet explosion不会引起子弹爆炸
        """

        #  子弹声音
        global play_sounds, sounds

        if self.shielded:
            return True

        if not friendly_fire:
            self.health -= damage
            if self.health < 1:
                if self.side == self.SIDE_ENEMY:
                    tank.trophies["enemy" + str(self.type)] += 1
                    points = (self.type + 1) * 100
                    tank.score += points
                    if play_sounds:
                        try:
                            sounds["explosion"].play()
                        except:
                            print "无法播放爆炸bgm"

                    labels.append(Label(self.rect.topleft, str(points), 500))

                self.explode()
            return True

        if self.side == self.SIDE_ENEMY:
            return False
        elif self.side == self.SIDE_PLAYER:
            if not self.paralised:
                self.setParalised(True)
                self.timer_uuid_paralise = gtimer.add(10000, lambda: self.setParalised(False), 1)  # 玩家之间互殴后停留10秒
            return True

    def setParalised(self, paralised=True):
        """ set tank paralise state 双人模式坦克互殴，设置坦克状态
        @param boolean paralised
        @return None
        """
        if self.state != self.STATE_ALIVE:
            gtimer.destroy(self.timer_uuid_paralise)
            return
        self.paralised = paralised

"""实例化坦克对象"""
#  敌人坦克
class Enemy(Tank):
    (TYPE_BASIC, TYPE_FAST, TYPE_POWER, TYPE_ARMOR) = range(4)

    def __init__(self, level, type, position=None, direction=None, filename=None):

        Tank.__init__(self, level, type, position=None, direction=None, filename=None)

        global enemies, sprites

        # if true, do not fire 为真则不开火
        self.bullet_queued = False

        # chose type on random 随机选择类型
        if len(level.enemies_left) > 0:
            self.type = level.enemies_left.pop()
        else:
            self.state = self.STATE_DEAD
            return

        if self.type == self.TYPE_BASIC:
            self.speed = 1
        elif self.type == self.TYPE_FAST:
            self.speed = 3
        elif self.type == self.TYPE_POWER:
            self.superpowers = 1
        elif self.type == self.TYPE_ARMOR:
            self.health = 400

        # 1 in 5 chance this will be bonus carrier, but only if no other tank is 五分之一的机会，这将是奖励载体，但只有当没有其他坦克
        # 地图当前只能出现一个奖励载体坦克(修改这里可以刷出更多的道具坦克)
        if random.randint(1, 5) == 1:
            self.bonus = True
            for enemy in enemies:
                if enemy.bonus:
                    self.bonus = False
                    break

        images = [sprites.subsurface(32 * 2, 0, 13 * 2, 15 * 2), sprites.subsurface(48 * 2, 0, 13 * 2, 15 * 2),
                  sprites.subsurface(64 * 2, 0, 13 * 2, 15 * 2), sprites.subsurface(80 * 2, 0, 13 * 2, 15 * 2),
                  sprites.subsurface(32 * 2, 16 * 2, 13 * 2, 15 * 2),
                  sprites.subsurface(48 * 2, 16 * 2, 13 * 2, 15 * 2),
                  sprites.subsurface(64 * 2, 16 * 2, 13 * 2, 15 * 2),
                  sprites.subsurface(80 * 2, 16 * 2, 13 * 2, 15 * 2)]

        self.image = images[self.type + 0]

        self.image_up = self.image;
        self.image_left = pygame.transform.rotate(self.image, 90)
        self.image_down = pygame.transform.rotate(self.image, 180)
        self.image_right = pygame.transform.rotate(self.image, 270)

        if self.bonus:
            self.image1_up = self.image_up;
            self.image1_left = self.image_left
            self.image1_down = self.image_down
            self.image1_right = self.image_right

            self.image2 = images[self.type + 4]
            self.image2_up = self.image2;
            self.image2_left = pygame.transform.rotate(self.image2, 90)
            self.image2_down = pygame.transform.rotate(self.image2, 180)
            self.image2_right = pygame.transform.rotate(self.image2, 270)

        self.rotate(self.direction, False)

        if position == None:
            self.rect.topleft = self.getFreeSpawningPosition()
            if not self.rect.topleft:
                self.state = self.STATE_DEAD
                return

        # list of map coords where tank should go next坦克下一步应该去的地图坐标列表
        self.path = self.generatePath(self.direction)

        # 1000 is duration between shots 1000毫秒=10秒是设计的持续时间??
        self.timer_uuid_fire = gtimer.add(1000, lambda: self.fire())

        # turn on flashing 开始闪光
        if self.bonus:
            self.timer_uuid_flash = gtimer.add(200, lambda: self.toggleFlash())

    def find(self): # 自定义一个方法去查询坦克实例的属性
        if self.type == self.TYPE_BASIC:
            if self.bonus:
                print "存在普通坦克,它是道具坦克,移速为: " + str(self.speed) + ", 血量为: " +str(self.health) + ",它的能力等级为: " + str(self.superpowers)
            else:
                print "存在普通坦克,移速为: " + str(self.speed) + ", 血量为: " + str(self.health) + ",它的能力等级为: " + str(self.superpowers)
        elif self.type == self.TYPE_FAST:
            if self.bonus:
                print "存在移速坦克,它是道具坦克,移速为: " + str(self.speed) + ", 血量为: " + str(self.health) + ",它的能力等级为: " + str(
                    self.superpowers)
            else:
                print "存在移速坦克,移速为: " + str(self.speed) + ", 血量为: " + str(self.health) + ",它的能力等级为: " + str(
                    self.superpowers)
        elif self.type == self.TYPE_POWER:
            if self.bonus:
                print "存在力量坦克,它是道具坦克,移速为: " + str(self.speed) + ", 血量为: " + str(self.health) + ",它的能力等级为: " + str(
                    self.superpowers)
            else:
                print "存在力量坦克,移速为: " + str(self.speed) + ", 血量为: " + str(self.health) + ",它的能力等级为: " + str(
                    self.superpowers)
        elif self.type == self.TYPE_ARMOR:
            if self.bonus:
                print "存在护甲坦克,它是道具坦克,移速为: " + str(self.speed) + ", 血量为: " + str(self.health) + ",它的能力等级为: " + str(
                    self.superpowers)
            else:
                print "存在护甲坦克,移速为: " + str(self.speed) + ", 血量为: " + str(self.health) + ",它的能力等级为: " + str(
                    self.superpowers)
        # print self.type , self.speed, self.bonus

    # 道具坦克的发光状态
    def toggleFlash(self):
        """ Toggle flash state 发光状态"""
        if self.state not in (self.STATE_ALIVE, self.STATE_SPAWNING):
            gtimer.destroy(self.timer_uuid_flash)
            return
        self.flash = not self.flash
        if self.flash:
            self.image_up = self.image2_up
            self.image_right = self.image2_right
            self.image_down = self.image2_down
            self.image_left = self.image2_left
        else:
            self.image_up = self.image1_up
            self.image_right = self.image1_right
            self.image_down = self.image1_down
            self.image_left = self.image1_left
        self.rotate(self.direction, False)

    # 道具闪烁频率和存在时长
    def spawnBonus(self):
        """ Create new bonus if needed """

        global bonuses

        if len(bonuses) > 0:
            return
        bonus = Bonus(self.level)
        bonuses.append(bonus)
        gtimer.add(500, lambda: bonus.toggleVisibility())  # 道具闪烁频率
        gtimer.add(10000, lambda: bonuses.remove(bonus), 1)  # 道具存在时长
    # 坦克的三个出生点
    def getFreeSpawningPosition(self):

        global players, enemies

        # 坦克的三个出生点
        available_positions = [
            [(self.level.TILE_SIZE * 2 - self.rect.width) / 2, (self.level.TILE_SIZE * 2 - self.rect.height) / 2],
            [12 * self.level.TILE_SIZE + (self.level.TILE_SIZE * 2 - self.rect.width) / 2,
             (self.level.TILE_SIZE * 2 - self.rect.height) / 2],
            [24 * self.level.TILE_SIZE + (self.level.TILE_SIZE * 2 - self.rect.width) / 2,
             (self.level.TILE_SIZE * 2 - self.rect.height) / 2]]

        # 随机打乱出生点的顺序
        random.shuffle(available_positions)

        for pos in available_positions:

            enemy_rect = pygame.Rect(pos, [26, 26])

            # collisions with other enemies 与其他敌人的冲突
            collision = False
            for enemy in enemies:
                if enemy_rect.colliderect(enemy.rect):
                    collision = True
                    continue

            if collision:
                continue

            # collisions with players 与玩家冲突
            collision = False
            for player in players:
                if enemy_rect.colliderect(player.rect):
                    collision = True
                    continue

            if collision:
                continue

            return pos
        return False

    def move(self):
        """ move enemy if possible 尽可能移动敌人"""

        global players, enemies, bonuses

        if self.state != self.STATE_ALIVE or self.paused or self.paralised:
            return

        if self.path == []:
            self.path = self.generatePath(None, True)

        new_position = self.path.pop(0)

        # move enemy 敌人移动
        if self.direction == self.DIR_UP:
            if new_position[1] < 0:
                self.path = self.generatePath(self.direction, True)
                return
        elif self.direction == self.DIR_RIGHT:
            if new_position[0] > (416 - 26):
                self.path = self.generatePath(self.direction, True)
                return
        elif self.direction == self.DIR_DOWN:
            if new_position[1] > (416 - 26):
                self.path = self.generatePath(self.direction, True)
                return
        elif self.direction == self.DIR_LEFT:
            if new_position[0] < 0:
                self.path = self.generatePath(self.direction, True)
                return

        new_rect = pygame.Rect(new_position, [26, 26])

        # collisions with tiles 与瓷砖的碰撞
        if new_rect.collidelist(self.level.obstacle_rects) != -1:
            self.path = self.generatePath(self.direction, True)
            return

        # collisions with other enemies 与其他敌人的冲突 , 敌人之间不会发生碰撞
        # for enemy in enemies:
        #     if enemy != self and new_rect.colliderect(enemy.rect):
        #         self.turnAround()
        #         self.path = self.generatePath(self.direction)
        #         return

        # collisions with players 玩家之间的碰撞
        for player in players:
            if new_rect.colliderect(player.rect):
                self.turnAround()
                self.path = self.generatePath(self.direction)
                return

        # collisions with bonuses 碰撞带着道具
        for bonus in bonuses:
            if new_rect.colliderect(bonus.rect):
                bonuses.remove(bonus)

        # if no collision, move enemy 如果没有碰撞，移动敌人
        self.rect.topleft = new_rect.topleft

    def update(self, time_passed):
        Tank.update(self, time_passed)
        if self.state == self.STATE_ALIVE and not self.paused:
            self.move()

    def generatePath(self, direction=None, fix_direction=False):
        """ If direction is specified, try continue that way, otherwise choose at random 如果指定了方向，继续尝试，否则随机选择
        """

        all_directions = [self.DIR_UP, self.DIR_RIGHT, self.DIR_DOWN, self.DIR_LEFT]

        if direction == None:
            if self.direction in [self.DIR_UP, self.DIR_RIGHT]:
                opposite_direction = self.direction + 2
            else:
                opposite_direction = self.direction - 2
            directions = all_directions
            random.shuffle(directions)
            directions.remove(opposite_direction)
            directions.append(opposite_direction)
        else:
            if direction in [self.DIR_UP, self.DIR_RIGHT]:
                opposite_direction = direction + 2
            else:
                opposite_direction = direction - 2

            if direction in [self.DIR_UP, self.DIR_RIGHT]:
                opposite_direction = direction + 2
            else:
                opposite_direction = direction - 2
            directions = all_directions
            random.shuffle(directions)
            directions.remove(opposite_direction)
            directions.remove(direction)
            directions.insert(0, direction)
            directions.append(opposite_direction)

        # at first, work with general units (steps) not px 首先，使用一般单位(步骤)而不是px
        x = int(round(self.rect.left / 16))
        y = int(round(self.rect.top / 16))

        new_direction = None

        for direction in directions:
            if direction == self.DIR_UP and y > 1:
                new_pos_rect = self.rect.move(0, -8)
                if new_pos_rect.collidelist(self.level.obstacle_rects) == -1:
                    new_direction = direction
                    break
            elif direction == self.DIR_RIGHT and x < 24:
                new_pos_rect = self.rect.move(8, 0)
                if new_pos_rect.collidelist(self.level.obstacle_rects) == -1:
                    new_direction = direction
                    break
            elif direction == self.DIR_DOWN and y < 24:
                new_pos_rect = self.rect.move(0, 8)
                if new_pos_rect.collidelist(self.level.obstacle_rects) == -1:
                    new_direction = direction
                    break
            elif direction == self.DIR_LEFT and x > 1:
                new_pos_rect = self.rect.move(-8, 0)
                if new_pos_rect.collidelist(self.level.obstacle_rects) == -1:
                    new_direction = direction
                    break

        # if we can go anywhere else, turn around 如果我们能去别的地方，就掉头吧
        if new_direction == None:
            new_direction = opposite_direction
            print "nav izejas. griezhamies"

        # fix tanks position 修复坦克的位置
        if fix_direction and new_direction == self.direction:
            fix_direction = False

        self.rotate(new_direction, fix_direction)

        positions = []

        x = self.rect.left
        y = self.rect.top

        if new_direction in (self.DIR_RIGHT, self.DIR_LEFT):
            axis_fix = self.nearest(y, 16) - y
        else:
            axis_fix = self.nearest(x, 16) - x
        axis_fix = 0

        pixels = self.nearest(random.randint(1, 12) * 32, 32) + axis_fix + 3

        if new_direction == self.DIR_UP:
            for px in range(0, pixels, self.speed):
                positions.append([x, y - px])
        elif new_direction == self.DIR_RIGHT:
            for px in range(0, pixels, self.speed):
                positions.append([x + px, y])
        elif new_direction == self.DIR_DOWN:
            for px in range(0, pixels, self.speed):
                positions.append([x, y + px])
        elif new_direction == self.DIR_LEFT:
            for px in range(0, pixels, self.speed):
                positions.append([x - px, y])

        return positions

# 玩家
class Player(Tank):

    def __init__(self, level, type, position=None, direction=None, filename=None):

        Tank.__init__(self, level, type, position=None, direction=None, filename=None)

        global sprites

        if filename == None:
            filename = (0, 0, 16 * 2, 16 * 2)

        self.start_position = position
        self.start_direction = direction

        self.lives = 3  # 初始生命条数 , 生命数

        # total score初始总分是0
        self.score = 0

        # 储存这个玩家在这关的战绩
        self.trophies = {"bonus": 0, "enemy0": 0, "enemy1": 0, "enemy2": 0, "enemy3": 0}

        self.image = sprites.subsurface(filename)
        self.image_up = self.image;
        self.image_left = pygame.transform.rotate(self.image, 90)
        self.image_down = pygame.transform.rotate(self.image, 180)
        self.image_right = pygame.transform.rotate(self.image, 270)

        if direction == None:
            self.rotate(self.DIR_UP, False)
        else:
            self.rotate(direction, False)

    def move(self, direction):
        """ move player if possible 玩家移动"""

        global players, enemies, bonuses

        if self.state == self.STATE_EXPLODING:
            if not self.explosion.active:
                self.state = self.STATE_DEAD
                del self.explosion

        if self.state != self.STATE_ALIVE:
            return

        # rotate player 旋转玩家
        if self.direction != direction:
            self.rotate(direction)

        if self.paralised:
            return

        # move player 移动玩家
        if direction == self.DIR_UP:
            new_position = [self.rect.left, self.rect.top - self.speed]
            if new_position[1] < 0:
                return
        elif direction == self.DIR_RIGHT:
            new_position = [self.rect.left + self.speed, self.rect.top]
            if new_position[0] > (416 - 26):
                return
        elif direction == self.DIR_DOWN:
            new_position = [self.rect.left, self.rect.top + self.speed]
            if new_position[1] > (416 - 26):
                return
        elif direction == self.DIR_LEFT:
            new_position = [self.rect.left - self.speed, self.rect.top]
            if new_position[0] < 0:
                return

        player_rect = pygame.Rect(new_position, [26, 26])

        # collisions with tiles 与瓷砖碰撞
        if player_rect.collidelist(self.level.obstacle_rects) != -1:
            return

        # collisions with other players 与其他玩家碰撞
        for player in players:
            if player != self and player.state == player.STATE_ALIVE and player_rect.colliderect(player.rect) == True:
                return

        # collisions with enemies 与敌人碰撞
        for enemy in enemies:
            if player_rect.colliderect(enemy.rect) == True:
                return

        # collisions with bonuses 碰撞道具坦克
        for bonus in bonuses:
            if player_rect.colliderect(bonus.rect) == True:
                self.bonus = bonus

        # if no collision, move player如果没有碰撞，移动玩家
        self.rect.topleft = (new_position[0], new_position[1])

    def reset(self):
        """ reset player 重置玩家"""
        self.rotate(self.start_direction, False)
        self.rect.topleft = self.start_position
        if god == False:
            self.superpowers = 0
            self.max_active_bullets = 1

        else:
            # 修改无敌模式的数值
            self.superpowers = 3
            self.max_active_bullets = 2
            self.speed = 5

        self.health = 100
        self.paralised = False
        self.paused = False
        self.pressed = [False] * 4
        self.state = self.STATE_ALIVE

# 开始游戏
class Game():
    # direction constants
    (DIR_UP, DIR_RIGHT, DIR_DOWN, DIR_LEFT) = range(4)

    TILE_SIZE = 16  # 瓷砖大小是16

    def __init__(self):

        global screen, sprites, play_sounds, sounds, Fullscreen,textList,bullets

        # center window
        os.environ['SDL_VIDEO_WINDOW_POS'] = 'center'

        if play_sounds:
            pygame.mixer.pre_init(44100, -16, 1, 512)

        pygame.init()

        pygame.display.set_caption("Battle City")
        global size
        size = width, height = 480, 416

        #  玩家输入-f可以获得全屏
        if "-f" in sys.argv[1:]:
            screen = pygame.display.set_mode(size, pygame.FULLSCREEN)
        else:
            screen = pygame.display.set_mode(size)

        self.clock = pygame.time.Clock()

        # load sprites (funky version)
        # sprites = pygame.transform.scale2x(pygame.image.load("images/sprites.gif"))
        # load sprites (pixely version)
        sprites = pygame.transform.scale(pygame.image.load("images/sprites.gif"), [192, 224])
        # screen.set_colorkey((0,138,104))

        pygame.display.set_icon(sprites.subsurface(0, 0, 13 * 2, 13 * 2))

        # load sounds
        try:
            if play_sounds:
                pygame.mixer.init(44100, -16, 1, 512)
                sounds["start"] = pygame.mixer.Sound("sounds/gamestart.ogg")
                sounds["end"] = pygame.mixer.Sound("sounds/gameover.ogg")
                sounds["score"] = pygame.mixer.Sound("sounds/score.ogg")
                sounds["bg"] = pygame.mixer.Sound("sounds/background.ogg")
                sounds["fire"] = pygame.mixer.Sound("sounds/fire.ogg")
                sounds["bonus"] = pygame.mixer.Sound("sounds/bonus.ogg")
                sounds["explosion"] = pygame.mixer.Sound("sounds/explosion.ogg")
                sounds["brick"] = pygame.mixer.Sound("sounds/brick.ogg")
                sounds["steel"] = pygame.mixer.Sound("sounds/steel.ogg")
        except:
            print "没有插耳机"  # 不插耳机报错
        # finally:
        #     pygame.mixer.init(44100, -16, 1, 512)
        #     sounds["start"] = pygame.mixer.Sound("sounds/gamestart.ogg")
        #     sounds["end"] = pygame.mixer.Sound("sounds/gameover.ogg")
        #     sounds["score"] = pygame.mixer.Sound("sounds/score.ogg")
        #     sounds["bg"] = pygame.mixer.Sound("sounds/background.ogg")
        #     sounds["fire"] = pygame.mixer.Sound("sounds/fire.ogg")
        #     sounds["bonus"] = pygame.mixer.Sound("sounds/bonus.ogg")
        #     sounds["explosion"] = pygame.mixer.Sound("sounds/explosion.ogg")
        #     sounds["brick"] = pygame.mixer.Sound("sounds/brick.ogg")
        #     sounds["steel"] = pygame.mixer.Sound("sounds/steel.ogg")

        self.enemy_life_image = sprites.subsurface(81 * 2, 57 * 2, 7 * 2, 7 * 2)
        self.player_life_image = sprites.subsurface(89 * 2, 56 * 2, 7 * 2, 8 * 2)
        self.flag_image = sprites.subsurface(64 * 2, 49 * 2, 16 * 2, 15 * 2)

        # this is used in intro screen这在介绍屏幕中使用
        self.player_image = pygame.transform.rotate(sprites.subsurface(0, 0, 13 * 2, 13 * 2), 270)

        # if true, no new enemies will be spawn during this time 如果是这样，在此期间不会产生新的敌人
        self.timefreeze = False

        # load custom font加载自定义字体
        self.font = pygame.font.Font("fonts/prstart.ttf", 16)

        # pre-render game over text预先渲染游戏的文字
        self.im_game_over = pygame.Surface((64, 40))
        self.im_game_over.set_colorkey((0, 0, 0))
        self.im_game_over.blit(self.font.render("GAME", False, (127, 64, 64)), [0, 0])
        self.im_game_over.blit(self.font.render("OVER", False, (127, 64, 64)), [0, 20])
        self.game_over_y = 416 + 40

        # number of players. here is defined preselected menu value 默认的玩家数量是1(菜单默认1开始,)
        self.nr_of_players = 1

        del players[:]
        del bullets[:]
        del enemies[:]
        del bonuses[:]

    def gameLoop(self, flag):
        while flag:
            if flag == False:
                break
    # 触发道具
    def triggerBonus(self, bonus, player):
        """ Execute bonus powers 执行额外的权力"""

        global enemies, labels, play_sounds, sounds

        if play_sounds:
            try:
                sounds["bonus"].play()
            except:
                print "无法播放获得道具时bgm"

        player.trophies["bonus"] += 1
        player.score += 500  # 触发道具+500分

        if bonus.bonus == bonus.BONUS_GRENADE:
            for enemy in enemies:
                enemy.explode()
        elif bonus.bonus == bonus.BONUS_HELMET:
            if god == False:
                self.shieldPlayer(player, True, 10000)  # 护盾持续10000毫秒=10秒

        elif bonus.bonus == bonus.BONUS_SHOVEL:
            self.level.buildFortress(self.level.TILE_STEEL)
            gtimer.add(10000, lambda: self.level.buildFortress(self.level.TILE_BRICK), 1)
        elif bonus.bonus == bonus.BONUS_STAR:
            player.superpowers += 1
            if player.superpowers == 2:
                player.max_active_bullets = 2  # 坦克最多同时发射的子弹
        elif bonus.bonus == bonus.BONUS_TANK:
            player.lives += 1  # 生命+1
        elif bonus.bonus == bonus.BONUS_TIMER:
            self.toggleEnemyFreeze(True)  # 敌人被冻住10秒
            gtimer.add(10000, lambda: self.toggleEnemyFreeze(False), 1)
        bonuses.remove(bonus)

        labels.append(Label(bonus.rect.topleft, "500", 500))

    def shieldPlayer(self, player, shield=True, duration=None):
        """ 添加/移除护盾
        玩家: 玩家 (非敌人)
        护盾: 真/假（布尔型）
        持续时间: 在（持续时间）毫秒内. 如果没有, 不要自动移除护盾
        """
        player.shielded = shield
        if shield:
            player.timer_uuid_shield = gtimer.add(100, lambda: player.toggleShieldImage())  # 任务定时器
        else:
            gtimer.destroy(player.timer_uuid_shield)

        if shield and duration != None:  # 如果有护盾，持续时间不为空
            gtimer.add(duration, lambda: self.shieldPlayer(player, False), 1)

    # 生成坦克
    def spawnEnemy(self):
        """ Spawn new enemy if needed 如果有需要就产生新的坦克
        Only add enemy if:
            - there are at least one in queue至少有一个在排队
            - map capacity hasn't exceeded its quota地图容量没有超过限额
            - now isn't timefreeze现在不是时间冻结
        """

        global enemies

        if len(enemies) >= self.level.max_active_enemies:
            return
        if len(self.level.enemies_left) < 1 or self.timefreeze:
            return
        enemy = Enemy(self.level, 1)

        enemies.append(enemy)

    # 玩家重生
    def respawnPlayer(self, player, clear_scores=False):
        """ 玩家重生 """
        player.reset()

        if clear_scores:
            player.trophies = {"bonus": 0, "enemy0": 0, "enemy1": 0, "enemy2": 0, "enemy3": 0}

        if god == False:
            self.shieldPlayer(player, True, 4000)
        else:
            # 无敌模式
            self.shieldPlayer(player, True, 99999999999)
            print "进入无敌模式"

    # 设定self.game_over = True
    def gameOver(self):
        """ 结束游戏 返回到菜单 """

        global play_sounds, sounds

        print "Game Over"
        if play_sounds:
            try:
                for sound in sounds:
                    sounds[sound].stop()
                sounds["end"].play()
            except:
                print "无法播放游戏结束bgm"
        self.game_over_y = 416 + 40

        self.game_over = True
        gtimer.add(3000, lambda: self.showScores(), 1)  # 展示分数

    def gameOverScreen(self):
        #  游戏结束时界面

        global screen, Fullscreen
        Fullscreen = False

        # 停止游戏主循环
        self.running = False

        screen.fill([0, 0, 0])  # 游戏结束时背景颜色

        self.writeInBricks("game", [125, 140])  # [x,y] x为横坐标，y为纵坐标，意思是字体显示位置
        self.writeInBricks("over", [125, 220])
        pygame.display.flip()  # 更新整个待显示的 Surface 对象到屏幕上
        while 1:  # 循环
            time_passed = self.clock.tick(50)
            for event in pygame.event.get():  # 监听用户事件
                if event.type == pygame.QUIT:  # 判断用户是否点击了关闭按钮
                    print "quit()3"
                    quit()  # 关闭所有相关联的窗口
                elif event.type == pygame.KEYDOWN:  # 判断用户是否按下键盘
                    if event.key == pygame.K_p :  # 游戏结算界面暂停
                        Flag = True
                        print "结算界面暂停"
                        while Flag:
                            for event in pygame.event.get():
                                if event.type == pygame.KEYDOWN:
                                    #sleep(1)
                                    if event.key == pygame.K_p:
                                        # self.writeInBricks("stopping", [65, 80])
                                        # print "开始"
                                        Flag = False
                                    else:
                                        continue
                    if event.key == pygame.K_u:  # u键切换窗口为全屏或窗口
                        Fullscreen = not Fullscreen
                        if Fullscreen:
                            print "菜单进入全屏"
                            screen = pygame.display.set_mode(size, pygame.FULLSCREEN)
                            self.FreezeAll(True)  # 冻结3秒,让程序卡过图
                            gtimer.add(3000, lambda: self.FreezeAll(False), 1)
                        else:
                            print "菜单进入窗口"
                            screen = pygame.display.set_mode(size)
                            self.FreezeAll(True)  # 冻结3秒,让程序卡过图
                            gtimer.add(3000, lambda: self.FreezeAll(False), 1)
                    # elif event.key == pygame.K_RETURN:  # 判断按键输入为Enter时
                    self.showMenu()  # 调用showMenu回到主菜单
                    return

    def showMenu(self):
        # 显示游戏菜单
        # 仅当按下向上或向下键时重新绘制屏幕。
        # 当按下回车键时，退出这个屏幕，跳转到主界面中进行玩家人数选择

        global players, screen

        # stop game main loop (if any)停止游戏主循环(如果有的话)
        self.running = False

        # clear all timers 清除所有计时器
        del gtimer.timers[:]

        # 设置当前阶段为0 ,等于1时,是第2关,所以是从0开始才对，初始关卡(设置关卡)
        # self.stage = 1
        self.stage = 0

        self.animateIntroScreen()

        main_loop = True
        Fullscreen = False
        running = 0
        flag = False
        while main_loop:
            time_passed = self.clock.tick(50)
            # 各种事件
            for event in pygame.event.get():

                if event.type == pygame.QUIT:
                    quit()

                elif event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_u:  # f键切换窗口为全屏或窗口
                        Fullscreen = not Fullscreen
                        if Fullscreen:
                            print "菜单进入全屏"
                            screen = pygame.display.set_mode(size, pygame.FULLSCREEN)
                            self.FreezeAll(True)  # 冻结3秒,让程序卡过图
                            gtimer.add(30000, lambda: self.FreezeAll(False), 1)
                        else:
                            print "菜单进入窗口"
                            screen = pygame.display.set_mode(size)
                            self.FreezeAll(True)  # 冻结3秒,让程序卡过图
                            gtimer.add(30000, lambda: self.FreezeAll(False), 1)
                    elif event.key == pygame.K_p :  # 菜单暂停
                        Flag = True
                        print "菜单界面停"
                        while Flag:
                            for event in pygame.event.get():
                                if event.type == pygame.KEYDOWN:
                                    #sleep(1)
                                    if event.key == pygame.K_p:
                                        # self.writeInBricks("stopping", [65, 80])
                                        # print "开始"
                                        Flag = False
                                    else:
                                        continue
                    elif event.key == pygame.K_q:
                        quit()
                    elif event.key == pygame.K_UP:
                        if self.nr_of_players == 2:
                            self.nr_of_players = 1
                            self.drawIntroScreen()
                        elif self.nr_of_players == 3:
                            self.nr_of_players = 2
                            self.drawIntroScreen()
                    elif event.key == pygame.K_DOWN:
                        if self.nr_of_players == 1:
                            self.nr_of_players = 2
                            self.drawIntroScreen()
                        elif self.nr_of_players == 2:
                            self.nr_of_players = 3
                            self.drawIntroScreen()
                    elif event.key == pygame.K_RETURN:
                        main_loop = False

        del players[:]
        self.nextLevel()

    # 重新载入玩家,包括玩家出生点
    def reloadPlayers(self):
        """初始化玩家
           如果玩家已经存在，只需重置他们
        """

        global players, textList

        if len(players) == 0:
            # first player 第一个玩家
            x = 8 * self.TILE_SIZE + (self.TILE_SIZE * 2 - 26) / 2
            y = 24 * self.TILE_SIZE + (self.TILE_SIZE * 2 - 26) / 2

            player = Player(self.level, 0, [x, y], self.DIR_UP, (0, 0, 13 * 2, 13 * 2))
            players.append(player)

            # second player 第二个玩家
            if self.nr_of_players == 2:
                x = 16 * self.TILE_SIZE + (self.TILE_SIZE * 2 - 26) / 2
                y = 24 * self.TILE_SIZE + (self.TILE_SIZE * 2 - 26) / 2
                player = Player(self.level, 0, [x, y], self.DIR_UP, (16 * 2, 0, 13 * 2, 13 * 2))
                player.controls = [102, 119, 100, 115, 97]
                players.append(player)

        for player in players:
            player.level = self.level
            if player.lives == 0:
                player.lives += 1
                self.respawnPlayer(player, True)
            else:
                self.respawnPlayer(player, True)

    # 展示关卡分数
    def showScores(self):
        """ 展示关卡分数 """

        global screen, sprites, players, play_sounds, sounds

        # 停止游戏主循环
        self.running = False

        # 清除所有计时器
        del gtimer.timers[:]

        if play_sounds:
            for sound in sounds:
                sounds[sound].stop()

        hiscore = self.loadHiscore()

        # 如果需要更新最高分
        if players[0].score > hiscore:
            hiscore = players[0].score
            self.saveHiscore(hiscore)
        if self.nr_of_players == 2 and players[1].score > hiscore:
            hiscore = players[1].score
            self.saveHiscore(hiscore)

        img_tanks = [  # 敌方坦克图片加载
            sprites.subsurface(32 * 2, 0, 13 * 2, 15 * 2), sprites.subsurface(48 * 2, 0, 13 * 2, 15 * 2),
            sprites.subsurface(64 * 2, 0, 13 * 2, 15 * 2), sprites.subsurface(80 * 2, 0, 13 * 2, 15 * 2)]

        img_arrows = [  # 箭头加载
            sprites.subsurface(81 * 2, 48 * 2, 7 * 2, 7 * 2), sprites.subsurface(88 * 2, 48 * 2, 7 * 2, 7 * 2)]

        screen.fill([0, 0, 0])

        # 颜色
        black = pygame.Color("black")
        white = pygame.Color("white")
        purple = pygame.Color(127, 64, 64)
        pink = pygame.Color(191, 160, 128)

        screen.blit(self.font.render("HI-SCORE", False, purple), [105, 35])
        screen.blit(self.font.render(str(hiscore), False, pink), [295, 35])

        screen.blit(self.font.render("STAGE" + str(self.stage).rjust(3), False, white), [170, 65])

        screen.blit(self.font.render("I-PLAYER", False, purple), [25, 95])

        # 玩家一的分数
        screen.blit(self.font.render(str(players[0].score).rjust(8), False, pink), [25, 125])
        print players[0].score

        if self.nr_of_players == 2:
            screen.blit(self.font.render("II-PLAYER", False, purple), [310, 95])

            # 玩家二的分数
            screen.blit(self.font.render(str(players[1].score).rjust(8), False, pink), [325, 125])

        # 坦克和箭头
        for i in range(4):
            screen.blit(img_tanks[i], [226, 160 + (i * 45)])
            screen.blit(img_arrows[0], [206, 168 + (i * 45)])
            if self.nr_of_players == 2:
                screen.blit(img_arrows[1], [258, 168 + (i * 45)])

        screen.blit(self.font.render("TOTAL", False, white), [70, 335])

        # 总计 下划线
        pygame.draw.line(screen, white, [170, 330], [307, 330], 4)

        pygame.display.flip()

        self.clock.tick(2)

        interval = 5

        # 分数和击杀数
        for i in range(4):

            # 特定坦克总数
            tanks = players[0].trophies["enemy" + str(i)]

            for n in range(tanks + 1):
                if n > 0 and play_sounds:
                    try:
                        sounds["score"].play()
                    except:
                        print "无法播放结算bgm"
                # 删除之前的文本
                screen.blit(self.font.render(str(n - 1).rjust(2), False, black), [170, 168 + (i * 45)])
                # 打印新的敌人数量
                screen.blit(self.font.render(str(n).rjust(2), False, white), [170, 168 + (i * 45)])
                # 删除之前的文本
                screen.blit(self.font.render(str((n - 1) * (i + 1) * 100).rjust(4) + " PTS", False, black),
                            [25, 168 + (i * 45)])
                # 打印每个敌人的总分数
                screen.blit(self.font.render(str(n * (i + 1) * 100).rjust(4) + " PTS", False, white),
                            [25, 168 + (i * 45)])
                pygame.display.flip()
                self.clock.tick(interval+5)

            if self.nr_of_players == 2:
                tanks = players[1].trophies["enemy" + str(i)]

                for n in range(tanks + 1):

                    if n > 0 and play_sounds:
                        try:
                            sounds["score"].play()
                        except:
                            print "无法播放结算bgm"
                    screen.blit(self.font.render(str(n - 1).rjust(2), False, black), [277, 168 + (i * 45)])
                    screen.blit(self.font.render(str(n).rjust(2), False, white), [277, 168 + (i * 45)])

                    screen.blit(self.font.render(str((n - 1) * (i + 1) * 100).rjust(4) + " PTS", False, black),
                                [325, 168 + (i * 45)])
                    screen.blit(self.font.render(str(n * (i + 1) * 100).rjust(4) + " PTS", False, white),
                                [325, 168 + (i * 45)])

                    pygame.display.flip()
                    self.clock.tick(interval)

            self.clock.tick(interval)

        # 坦克总数
        tanks = sum([i for i in players[0].trophies.values()]) - players[0].trophies["bonus"]
        screen.blit(self.font.render(str(tanks).rjust(2), False, white), [170, 335])
        if self.nr_of_players == 2:
            tanks = sum([i for i in players[1].trophies.values()]) - players[1].trophies["bonus"]
            screen.blit(self.font.render(str(tanks).rjust(2), False, white), [277, 335])

        pygame.display.flip()

        # 什么都不做两秒钟
        self.clock.tick(1)
        self.clock.tick(1)

        if self.game_over:
            self.gameOverScreen()
            #self.nextLevel()     无敌模式
        else:
            self.nextLevel()

    # 画游戏界面的图
    def draw(self):
        global screen, castle, players, enemies, bullets, bonuses

        screen.fill([0, 0, 0])

        self.level.draw([self.level.TILE_EMPTY, self.level.TILE_BRICK, self.level.TILE_STEEL, self.level.TILE_FROZE,
                         self.level.TILE_WATER])

        castle.draw()

        for enemy in enemies:
            enemy.draw()

        for label in labels:
            label.draw()

        for player in players:
            player.draw()

        for bullet in bullets:
            bullet.draw()

        for bonus in bonuses:
            bonus.draw()

        self.level.draw([self.level.TILE_GRASS])

        if self.game_over:
            if self.game_over_y > 188:
                self.game_over_y -= 4
            screen.blit(self.im_game_over, [176, self.game_over_y])  # 176=(416-64)/2

        self.drawSidebar()

        pygame.display.flip()

    # 画右边的标签栏
    def drawSidebar(self):

        global screen, players, enemies

        x = 416
        y = 0
        screen.fill([100, 100, 100], pygame.Rect([416, 0], [64, 416]))

        xpos = x + 16
        ypos = y + 16

        # 敌方坦克数量显示
        for n in range(len(self.level.enemies_left) + len(enemies)):
            screen.blit(self.enemy_life_image, [xpos, ypos])
            if n % 2 == 1:
                xpos = x + 16
                ypos += 17
            else:
                xpos += 17

        # 玩家生命数
        if pygame.font.get_init():
            text_color = pygame.Color('black')
            for n in range(len(players)):
                if n == 0:
                    screen.blit(self.font.render(str(n + 1) + "P", False, text_color), [x + 16, y + 200])
                    screen.blit(self.font.render(str(players[n].lives), False, text_color), [x + 31, y + 215])
                    screen.blit(self.player_life_image, [x + 17, y + 215])
                else:
                    screen.blit(self.font.render(str(n + 1) + "P", False, text_color), [x + 16, y + 240])
                    screen.blit(self.font.render(str(players[n].lives), False, text_color), [x + 31, y + 255])
                    screen.blit(self.player_life_image, [x + 17, y + 255])

            screen.blit(self.flag_image, [x + 17, y + 280])
            screen.blit(self.font.render(str(self.stage), False, text_color), [x + 17, y + 312])

    # 画模式选择界面
    def drawIntroScreen(self, put_on_surface=True):
        """ 游戏主界面菜单
        @param boolean put_on_surface If True, flip display after drawing  put_on_surface如果为真，在绘制后翻转显示
        @return None
        """

        global screen
        global god
        god = False

        screen.fill([0, 0, 0])

        if pygame.font.get_init():
            # hiscore是最高分
            hiscore = self.loadHiscore()

            screen.blit(self.font.render("HI- " + str(hiscore), True, pygame.Color('white')), [170, 35])

            screen.blit(self.font.render("1 PLAYER", True, pygame.Color('white')), [165, 250])
            screen.blit(self.font.render("2 PLAYERS", True, pygame.Color('white')), [165, 275])
            screen.blit(self.font.render("GOD MODE", True, pygame.Color('white')), [165, 300])
            screen.blit(self.font.render("(c) 1980 1985 NAMCO LTD.", True, pygame.Color('white')), [50, 350])
            screen.blit(self.font.render("ALL RIGHTS RESERVED", True, pygame.Color('white')), [85, 380])

        if self.nr_of_players == 1:
            screen.blit(self.player_image, [125, 245])
        elif self.nr_of_players == 2:
            screen.blit(self.player_image, [125, 270])
        elif self.nr_of_players == 3:
            screen.blit(self.player_image, [125, 300])
            god = True

        self.writeInBricks("battle", [65, 80])
        self.writeInBricks("city", [129, 160])

        if put_on_surface:
            pygame.display.flip()

    # 按下Enter键，立即完成模式选择界面的动画
    def animateIntroScreen(self):
        """ 从下到上滑动介绍(菜单)屏幕
            如果按下Enter键，立即完成动画
            @return None
        """

        global screen

        self.drawIntroScreen(False)
        screen_cp = screen.copy()

        screen.fill([0, 0, 0])

        y = 416
        while (y > 0):
            time_passed = self.clock.tick(50)
            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_RETURN:
                        y = 0
                        break


            screen.blit(screen_cp, [0, y])
            pygame.display.flip()
            y -= 5

        screen.blit(screen_cp, [0, 0])
        pygame.display.flip()

    # 将文本字符串分割成指定大小的块
    def chunks(self, l, n):
        """ 将文本字符串分割成指定大小的块
        @param string l Input string
        @param int n Size (number of characters) of each chunk
        @return list
        """
        return [l[i:i + n] for i in range(0, len(l), n)]

    # 以“砖块字体”写入指定文本,组成单词“Battle City”和“Game Over”
    def writeInBricks(self, text, pos):
        """ 以“砖块字体”写入指定文本
只有这些字母可以组成单词“Battle City”和“Game Over”
小写和大写都是有效的输入，但是输出总是大写的
每个字母由7x7块砖块组成，砖块被转换成49个字符的字符串
然后将其转换为十六进制以节省一些字节
        @return None
        """

        global screen, sprites

        bricks = sprites.subsurface(56 * 2, 64 * 2, 8 * 2, 8 * 2)
        brick1 = bricks.subsurface((0, 0, 8, 8))
        brick2 = bricks.subsurface((8, 0, 8, 8))
        brick3 = bricks.subsurface((8, 8, 8, 8))
        brick4 = bricks.subsurface((0, 8, 8, 8))
        #  字母表alphabet
        alphabet = {"a": "0071b63c7ff1e3", "b": "01fb1e3fd8f1fe", "c": "00799e0c18199e", "e": "01fb060f98307e",
                    "g": "007d860cf8d99f", "i": "01f8c183060c7e", "l": "0183060c18307e", "m": "018fbffffaf1e3",
                    "o": "00fb1e3c78f1be", "r": "01fb1e3cff3767", "t": "01f8c183060c18", "v": "018f1e3eef8e08",
                    "y": "019b3667860c18"}

        abs_x, abs_y = pos

        for letter in text.lower():

            binstr = ""
            for h in self.chunks(alphabet[letter], 2):
                binstr += str(bin(int(h, 16)))[2:].rjust(8, "0")
            binstr = binstr[7:]

            x, y = 0, 0
            letter_w = 0
            surf_letter = pygame.Surface((56, 56))
            for j, row in enumerate(self.chunks(binstr, 7)):
                for i, bit in enumerate(row):
                    if bit == "1":
                        if i % 2 == 0 and j % 2 == 0:
                            surf_letter.blit(brick1, [x, y])
                        elif i % 2 == 1 and j % 2 == 0:
                            surf_letter.blit(brick2, [x, y])
                        elif i % 2 == 1 and j % 2 == 1:
                            surf_letter.blit(brick3, [x, y])
                        elif i % 2 == 0 and j % 2 == 1:
                            surf_letter.blit(brick4, [x, y])
                        if x > letter_w:
                            letter_w = x
                    x += 8
                x = 0
                y += 8
            screen.blit(surf_letter, [abs_x, abs_y])
            abs_x += letter_w + 16

    # 道具冻结敌人
    def toggleEnemyFreeze(self, freeze=True):
        """ 冻结/解冻所有敌人 """

        global enemies

        for enemy in enemies:
            enemy.paused = freeze
        self.timefreeze = freeze

    # 卡过图的时候冻结敌人和玩家
    def FreezeAll(self, freeze=True):
        """冻结所有坦克,相对暂停"""
        global enemies,players
        for e in enemies:
            e.paused = freeze

        for p in players:
            p.paused = freeze
        self.timefreeze = freeze

    # 加载最高分,查看本地是否有.hiscore文件
    def loadHiscore(self):
        """ 加载最高分,查看本地是否有.hiscore文件
        如果某种原因不能加载最高分，返回20000
        返回值为int型
        """
        filename = ".hiscore"
        if (not os.path.isfile(filename)):
            return 20000

        f = open(filename, "r")
        hiscore = int(f.read())

        if hiscore > 19999 and hiscore < 1000000:  # 最高分在19999 0:
                                self.respawnPlayer(player)
                        if player.lives == 0:
                            Deadnums += 1
                        if Deadnums ==2:
                            self.gameOver()

            for bullet in bullets:
                if bullet.state == bullet.STATE_REMOVED:
                    bullets.remove(bullet)
                else:
                    bullet.update()

            for bonus in bonuses:
                if bonus.active == False:
                    bonuses.remove(bonus)

            for label in labels:
                if not label.active:
                    labels.remove(label)

            if not self.game_over:
                if not castle.active:
                    self.gameOver()

            gtimer.update(time_passed)

            self.draw()


if __name__ == "__main__":
    gtimer = Timer()
    god = False
    sprites = None
    screen = None
    players = []
    enemies = []
    bullets = []
    bonuses = []
    labels = []
    Fullscreen = False
    play_sounds = True
    sounds = {}
    textList = []
    game = Game()
    castle = Castle()
    game.showMenu()