【Python游戏】Python实现一个Q版泡泡堂小游戏

开发环境

Python版本：3.6.4
相关模块：
pygame模块；
以及一些Python自带的模块。

环境搭建

安装Python并添加到环境变量，pip安装需要的相关模块即可。

原理介绍

游戏规则：

玩家通过↑↓←→键控制角色zelda(绿色)行动，当玩家按下空格键时，则可以在当前位置放置炸弹。其他角色(dk和batman)则由电脑控制进行随机行动。所有角色被炸弹产生的火焰灼烧时(包括自己放置的炸弹)，都将损失一定生命值；所有角色吃到水果时，均可恢复一定数值的生命值。另外，墙可以阻止炸弹产生的火焰进一步扩散。
当我方角色zelda生命值为0时，游戏失败；当电脑方所有角色生命值为0时，游戏胜利，进入下一关。
逐步实现：
首先，我们来明确一下该游戏包含哪些游戏精灵类：

炸弹类
角色类
墙类
背景类
水果类

墙类和背景类很好定义，只需要可以导入图片，然后把图片绑定到指定位置就行了：

效果展示

开始界面

游戏界面

代码实现

'''墙类'''
class Wall(pygame.sprite.Sprite):def __init__(self, imagepath, coordinate, blocksize, **kwargs):pygame.sprite.Sprite.__init__(self)self.image = pygame.image.load(imagepath)self.image = pygame.transform.scale(self.image, (blocksize, blocksize))self.rect = self.image.get_rect()self.rect.left, self.rect.top = coordinate[0] * blocksize, coordinate[1] * blocksizeself.coordinate = coordinateself.blocksize = blocksize'''画到屏幕上'''def draw(self, screen):screen.blit(self.image, self.rect)return True'''背景类'''
class Background(pygame.sprite.Sprite):def __init__(self, imagepath, coordinate, blocksize, **kwargs):pygame.sprite.Sprite.__init__(self)self.image = pygame.image.load(imagepath)self.image = pygame.transform.scale(self.image, (blocksize, blocksize))self.rect = self.image.get_rect()self.rect.left, self.rect.top = coordinate[0] * blocksize, coordinate[1] * blocksizeself.coordinate = coordinateself.blocksize = blocksize'''画到屏幕上'''def draw(self, screen):screen.blit(self.image, self.rect)return True

水果类定义其实也差不多，但是不同的水果可以帮助角色恢复不同数值的生命值：

'''水果类'''
class Fruit(pygame.sprite.Sprite):def __init__(self, imagepath, coordinate, blocksize, **kwargs):pygame.sprite.Sprite.__init__(self)self.kind = imagepath.split('/')[-1].split('.')[0]if self.kind == 'banana':self.value = 5elif self.kind == 'cherry':self.value = 10else:raise ValueError('Unknow fruit <%s>...' % self.kind)self.image = pygame.image.load(imagepath)self.image = pygame.transform.scale(self.image, (blocksize, blocksize))self.rect = self.image.get_rect()self.rect.left, self.rect.top = coordinate[0] * blocksize, coordinate[1] * blocksizeself.coordinate = coordinateself.blocksize = blocksize'''画到屏幕上'''def draw(self, screen):screen.blit(self.image, self.rect)return True

炸弹类和角色类的定义就稍稍复杂一些了。角色类需要根据玩家或者电脑的指示上下左右移动，同时可以在自己的位置上产生炸弹以及吃水果之后恢复一定数值的生命值：

'''角色类'''
class Hero(pygame.sprite.Sprite):def __init__(self, imagepaths, coordinate, blocksize, map_parser, **kwargs):pygame.sprite.Sprite.__init__(self)self.imagepaths = imagepathsself.image = pygame.image.load(imagepaths[-1])self.image = pygame.transform.scale(self.image, (blocksize, blocksize))self.rect = self.image.get_rect()self.rect.left, self.rect.top = coordinate[0] * blocksize, coordinate[1] * blocksizeself.coordinate = coordinateself.blocksize = blocksizeself.map_parser = map_parserself.hero_name = kwargs.get('hero_name')# 生命值self.health_value = 50# 炸弹冷却时间self.bomb_cooling_time = 5000self.bomb_cooling_count = 0# 随机移动冷却时间(仅AI电脑用)self.randommove_cooling_time = 100self.randommove_cooling_count = 0'''角色移动'''def move(self, direction):self.__updateImage(direction)if direction == 'left':if self.coordinate[0]-1 < 0 or self.map_parser.getElemByCoordinate([self.coordinate[0]-1, self.coordinate[1]]) in ['w', 'x', 'z']:return Falseself.coordinate[0] = self.coordinate[0] - 1elif direction == 'right':if self.coordinate[0]+1 >= self.map_parser.width or self.map_parser.getElemByCoordinate([self.coordinate[0]+1, self.coordinate[1]]) in ['w', 'x', 'z']:return Falseself.coordinate[0] = self.coordinate[0] + 1elif direction == 'up':if self.coordinate[1]-1 < 0 or self.map_parser.getElemByCoordinate([self.coordinate[0], self.coordinate[1]-1]) in ['w', 'x', 'z']:return Falseself.coordinate[1] = self.coordinate[1] - 1elif direction == 'down':if self.coordinate[1]+1 >= self.map_parser.height or self.map_parser.getElemByCoordinate([self.coordinate[0], self.coordinate[1]+1]) in ['w', 'x', 'z']:return Falseself.coordinate[1] = self.coordinate[1] + 1else:raise ValueError('Unknow direction <%s>...' % direction)self.rect.left, self.rect.top = self.coordinate[0] * self.blocksize, self.coordinate[1] * self.blocksizereturn True'''随机行动(AI电脑用)'''def randomAction(self, dt):# 冷却倒计时if self.randommove_cooling_count > 0:self.randommove_cooling_count -= dtaction = random.choice(['left', 'left', 'right', 'right', 'up', 'up', 'down', 'down', 'dropbomb'])flag = Falseif action in ['left', 'right', 'up', 'down']:if self.randommove_cooling_count <= 0:flag = Trueself.move(action)self.randommove_cooling_count = self.randommove_cooling_timeelif action in ['dropbomb']:if self.bomb_cooling_count <= 0:flag = Trueself.bomb_cooling_count = self.bomb_cooling_timereturn action, flag'''生成炸弹'''def generateBomb(self, imagepath, digitalcolor, explode_imagepath):return Bomb(imagepath=imagepath, coordinate=copy.deepcopy(self.coordinate), blocksize=self.blocksize, digitalcolor=digitalcolor, explode_imagepath=explode_imagepath)'''画到屏幕上'''def draw(self, screen, dt):# 冷却倒计时if self.bomb_cooling_count > 0:self.bomb_cooling_count -= dtscreen.blit(self.image, self.rect)return True'''吃水果'''def eatFruit(self, fruit_sprite_group):eaten_fruit = pygame.sprite.spritecollide(self, fruit_sprite_group, True, None)for fruit in eaten_fruit:self.health_value += fruit.value'''更新角色朝向'''def __updateImage(self, direction):directions = ['left', 'right', 'up', 'down']idx = directions.index(direction)self.image = pygame.image.load(self.imagepaths[idx])self.image = pygame.transform.scale(self.image, (self.blocksize, self.blocksize))

炸弹类则需要有倒计时提示功能，以及倒计时结束之后在炸弹杀伤范围内产生火焰特效(穷，估计只值1毛钱的特效T_T，大家多担待)：

'''炸弹类'''
class Bomb(pygame.sprite.Sprite):def __init__(self, imagepath, coordinate, blocksize, digitalcolor, explode_imagepath, **kwargs):pygame.sprite.Sprite.__init__(self)self.image = pygame.image.load(imagepath)self.image = pygame.transform.scale(self.image, (blocksize, blocksize))self.explode_imagepath = explode_imagepathself.rect = self.image.get_rect()# 像素位置self.rect.left, self.rect.top = coordinate[0] * blocksize, coordinate[1] * blocksize# 坐标(元素块为单位长度)self.coordinate = coordinateself.blocksize = blocksize# 爆炸倒计时self.explode_millisecond = 6000 * 1 - 1self.explode_second = int(self.explode_millisecond / 1000)self.start_explode = False# 爆炸持续时间self.exploding_count = 1000 * 1# 炸弹伤害能力self.harm_value = 1# 该炸弹是否还存在self.is_being = Trueself.font = pygame.font.SysFont('Consolas', 20)self.digitalcolor = digitalcolor'''画到屏幕上'''def draw(self, screen, dt, map_parser):if not self.start_explode:# 爆炸倒计时self.explode_millisecond -= dtself.explode_second = int(self.explode_millisecond / 1000)if self.explode_millisecond < 0:self.start_explode = Truescreen.blit(self.image, self.rect)text = self.font.render(str(self.explode_second), True, self.digitalcolor)rect = text.get_rect(center=(self.rect.centerx-5, self.rect.centery+5))screen.blit(text, rect)return Falseelse:# 爆炸持续倒计时self.exploding_count -= dtif self.exploding_count > 0:return self.__explode(screen, map_parser)else:self.is_being = Falsereturn False'''爆炸效果'''def __explode(self, screen, map_parser):explode_area = self.__calcExplodeArea(map_parser.instances_list)for each in explode_area:image = pygame.image.load(self.explode_imagepath)image = pygame.transform.scale(image, (self.blocksize, self.blocksize))rect = image.get_rect()rect.left, rect.top = each[0] * self.blocksize, each[1] * self.blocksizescreen.blit(image, rect)return explode_area'''计算爆炸区域'''def __calcExplodeArea(self, instances_list):explode_area = []# 区域计算规则为墙可以阻止爆炸扩散, 且爆炸范围仅在游戏地图范围内for ymin in range(self.coordinate[1], self.coordinate[1]-5, -1):if ymin < 0 or instances_list[ymin][self.coordinate[0]] in ['w', 'x', 'z']:breakexplode_area.append([self.coordinate[0], ymin])for ymax in range(self.coordinate[1]+1, self.coordinate[1]+5):if ymax >= len(instances_list) or instances_list[ymax][self.coordinate[0]] in ['w', 'x', 'z']:breakexplode_area.append([self.coordinate[0], ymax])for xmin in range(self.coordinate[0], self.coordinate[0]-5, -1):if xmin < 0 or instances_list[self.coordinate[1]][xmin] in ['w', 'x', 'z']:breakexplode_area.append([xmin, self.coordinate[1]])for xmax in range(self.coordinate[0]+1, self.coordinate[0]+5):if xmax >= len(instances_list[0]) or instances_list[self.coordinate[1]][xmax] in ['w', 'x', 'z']:breakexplode_area.append([xmax, self.coordinate[1]])return explode_area

因为炸弹类和角色类每帧都要绑定到游戏屏幕上，所以一些倒计时操作就合并地写到draw函数里了，当然最好是重新写一个函数来实现该功能，那样代码结构看起来会更清晰一些。

接下来，我们在.map文件中设计我们的游戏地图：

然后通过一个地图解析类来解析.map文件，这样每次切换关卡时只需要重新导入一个新的.map文件就行了，同时这样也方便游戏后续进行扩展：

'''.map文件解析器'''
class mapParser():def __init__(self, mapfilepath, bg_paths, wall_paths, blocksize, **kwargs):self.instances_list = self.__parse(mapfilepath)self.bg_paths = bg_pathsself.wall_paths = wall_pathsself.blocksize = blocksizeself.height = len(self.instances_list)self.width = len(self.instances_list[0])self.screen_size = (blocksize * self.width, blocksize * self.height)'''地图画到屏幕上'''def draw(self, screen):for j in range(self.height):for i in range(self.width):instance = self.instances_list[j][i]if instance == 'w':elem = Wall(self.wall_paths[0], [i, j], self.blocksize)elif instance == 'x':elem = Wall(self.wall_paths[1], [i, j], self.blocksize)elif instance == 'z':elem = Wall(self.wall_paths[2], [i, j], self.blocksize)elif instance == '0':elem = Background(self.bg_paths[0], [i, j], self.blocksize)elif instance == '1':elem = Background(self.bg_paths[1], [i, j], self.blocksize)elif instance == '2':elem = Background(self.bg_paths[2], [i, j], self.blocksize)else:raise ValueError('instance parse error in mapParser.draw...')elem.draw(screen)'''随机获取一个空地'''def randomGetSpace(self, used_spaces=None):while True:i = random.randint(0, self.width-1)j = random.randint(0, self.height-1)coordinate = [i, j]if used_spaces and coordinate in used_spaces:continueinstance = self.instances_list[j][i]if instance in ['0', '1', '2']:breakreturn coordinate'''根据坐标获取元素类型'''def getElemByCoordinate(self, coordinate):return self.instances_list[coordinate[1]][coordinate[0]]'''解析.map文件'''def __parse(self, mapfilepath):instances_list = []with open(mapfilepath) as f:for line in f.readlines():instances_line_list = []for c in line:if c in ['w', 'x', 'z', '0', '1', '2']:instances_line_list.append(c)instances_list.append(instances_line_list)return instances_list

OK，做完这些准备工作，就可以开始写游戏主循环啦：

'''游戏主程序'''
def main(cfg):# 初始化pygame.init()pygame.mixer.init()pygame.mixer.music.load(cfg.BGMPATH)pygame.mixer.music.play(-1, 0.0)screen = pygame.display.set_mode(cfg.SCREENSIZE)pygame.display.set_caption('Q版泡泡堂 公众号：Python 学习交流群： 773162165')# 开始界面Interface(screen, cfg, mode='game_start')# 游戏主循环font = pygame.font.SysFont('Consolas', 15)for gamemap_path in cfg.GAMEMAPPATHS:# -地图map_parser = mapParser(gamemap_path, bg_paths=cfg.BACKGROUNDPATHS, wall_paths=cfg.WALLPATHS, blocksize=cfg.BLOCKSIZE)# -水果fruit_sprite_group = pygame.sprite.Group()used_spaces = []for i in range(5):coordinate = map_parser.randomGetSpace(used_spaces)used_spaces.append(coordinate)fruit_sprite_group.add(Fruit(random.choice(cfg.FRUITPATHS), coordinate=coordinate, blocksize=cfg.BLOCKSIZE))# -我方Herocoordinate = map_parser.randomGetSpace(used_spaces)used_spaces.append(coordinate)ourhero = Hero(imagepaths=cfg.HEROZELDAPATHS, coordinate=coordinate, blocksize=cfg.BLOCKSIZE, map_parser=map_parser, hero_name='ZELDA')# -电脑Heroaihero_sprite_group = pygame.sprite.Group()coordinate = map_parser.randomGetSpace(used_spaces)aihero_sprite_group.add(Hero(imagepaths=cfg.HEROBATMANPATHS, coordinate=coordinate, blocksize=cfg.BLOCKSIZE, map_parser=map_parser, hero_name='BATMAN'))used_spaces.append(coordinate)coordinate = map_parser.randomGetSpace(used_spaces)aihero_sprite_group.add(Hero(imagepaths=cfg.HERODKPATHS, coordinate=coordinate, blocksize=cfg.BLOCKSIZE, map_parser=map_parser, hero_name='DK'))used_spaces.append(coordinate)# -炸弹bombbomb_sprite_group = pygame.sprite.Group()# -用于判断游戏胜利或者失败的flagis_win_flag = False# -主循环screen = pygame.display.set_mode(map_parser.screen_size)clock = pygame.time.Clock()while True:dt = clock.tick(cfg.FPS)for event in pygame.event.get():if event.type == pygame.QUIT:pygame.quit()sys.exit(-1)# --↑↓←→键控制上下左右, 空格键丢炸弹elif event.type == pygame.KEYDOWN:if event.key == pygame.K_UP:ourhero.move('up')elif event.key == pygame.K_DOWN:ourhero.move('down')elif event.key == pygame.K_LEFT:ourhero.move('left')elif event.key == pygame.K_RIGHT:ourhero.move('right')elif event.key == pygame.K_SPACE:if ourhero.bomb_cooling_count <= 0:bomb_sprite_group.add(ourhero.generateBomb(imagepath=cfg.BOMBPATH, digitalcolor=cfg.YELLOW, explode_imagepath=cfg.FIREPATH))screen.fill(cfg.WHITE)# --电脑Hero随机行动for hero in aihero_sprite_group:action, flag = hero.randomAction(dt)if flag and action == 'dropbomb':bomb_sprite_group.add(hero.generateBomb(imagepath=cfg.BOMBPATH, digitalcolor=cfg.YELLOW, explode_imagepath=cfg.FIREPATH))# --吃到水果加生命值(只要是Hero, 都能加)ourhero.eatFruit(fruit_sprite_group)for hero in aihero_sprite_group:hero.eatFruit(fruit_sprite_group)# --游戏元素都绑定到屏幕上map_parser.draw(screen)for bomb in bomb_sprite_group:if not bomb.is_being:bomb_sprite_group.remove(bomb)explode_area = bomb.draw(screen, dt, map_parser)if explode_area:# --爆炸火焰范围内的Hero生命值将持续下降if ourhero.coordinate in explode_area:ourhero.health_value -= bomb.harm_valuefor hero in aihero_sprite_group:if hero.coordinate in explode_area:hero.health_value -= bomb.harm_valuefruit_sprite_group.draw(screen)for hero in aihero_sprite_group:hero.draw(screen, dt)ourhero.draw(screen, dt)# --左上角显示生命值pos_x = showText(screen, font, text=ourhero.hero_name+'(our):'+str(ourhero.health_value), color=cfg.YELLOW, position=[5, 5])for hero in aihero_sprite_group:pos_x, pos_y = pos_x+15, 5pos_x = showText(screen, font, text=hero.hero_name+'(ai):'+str(hero.health_value), color=cfg.YELLOW, position=[pos_x, pos_y])# --我方玩家生命值小于等于0/电脑方玩家生命值均小于等于0则判断游戏结束if ourhero.health_value <= 0:is_win_flag = Falsebreakfor hero in aihero_sprite_group:if hero.health_value <= 0:aihero_sprite_group.remove(hero)if len(aihero_sprite_group) == 0:is_win_flag = Truebreakpygame.display.update()clock.tick(cfg.FPS)if is_win_flag:Interface(screen, cfg, mode='game_switch')else:breakInterface(screen, cfg, mode='game_end')

游戏界面

逻辑很简单，就是初始化之后导入关卡地图开始游戏，结束一关之后，判断是游戏胜利还是游戏失败，游戏胜利的话就进入下一关，否则就退出主循环，让玩家选择是否重新开始游戏。具体细节自己看下代码就能懂了，必要的注释我都加过了。

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好啦，今天的小游戏就给大家安利到这里啦，有啥不懂的大家可以在下方评论，需要源码的可以关注小编公众号：Python日志
在公众号中回复：泡泡堂