很多小伙伴找我说要一个Python制作的消灭星星小游戏，必须给你们安排好！！

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：

玩家通过鼠标交换相邻的拼图，若交换后水平/竖直方向存在连续三个相同的拼图，则这些拼图消失，玩家得分，同时生成新的拼图以补充消失的部分，否则，交换失败，玩家不得分。

玩家需要在规定时间内获取尽可能高的得分。

逐步实现：

Step1：初始化

游戏初始化，并加载必要的游戏素材：


```python
def main():pygame.init()screen = pygame.display.set_mode(cfg.SCREENSIZE)pygame.display.set_caption('消灭星星——彳余大胆')# 加载背景音乐pygame.mixer.init()pygame.mixer.music.load(os.path.join(cfg.ROOTDIR, "resources/audios/bg.mp3"))pygame.mixer.music.set_volume(0.6)pygame.mixer.music.play(-1)# 加载音效sounds = {}sounds['mismatch'] = pygame.mixer.Sound(os.path.join(cfg.ROOTDIR, 'resources/audios/badswap.wav'))sounds['match'] = []for i in range(6):sounds['match'].append(pygame.mixer.Sound(os.path.join(cfg.ROOTDIR, 'resources/audios/match%s.wav' % i)))# 加载字体font = pygame.font.Font(os.path.join(cfg.ROOTDIR, 'resources/font/font.TTF'), 25)# 图片加载gem_imgs = []for i in range(1, 8):gem_imgs.append(os.path.join(cfg.ROOTDIR, 'resources/images/gem%s.png' % i))

Step2：定义游戏精灵类

游戏中需要用到鼠标与拼图块之间的碰撞检测，从而操作拼图块移动，因此我们定义一个拼图块游戏精灵类以方便实现这些功能：

'''拼图精灵类'''
class gemSprite(pygame.sprite.Sprite):def __init__(self, img_path, size, position, downlen, **kwargs):pygame.sprite.Sprite.__init__(self)self.image = pygame.image.load(img_path)self.image = pygame.transform.smoothscale(self.image, size)self.rect = self.image.get_rect()self.rect.left, self.rect.top = positionself.downlen = downlenself.target_x = position[0]self.target_y = position[1] + downlenself.type = img_path.split('/')[-1].split('.')[0]self.fixed = Falseself.speed_x = 10self.speed_y = 10self.direction = 'down''''拼图块移动'''def move(self):if self.direction == 'down':self.rect.top = min(self.target_y, self.rect.top+self.speed_y)if self.target_y == self.rect.top:self.fixed = Trueelif self.direction == 'up':self.rect.top = max(self.target_y, self.rect.top-self.speed_y)if self.target_y == self.rect.top:self.fixed = Trueelif self.direction == 'left':self.rect.left = max(self.target_x, self.rect.left-self.speed_x)if self.target_x == self.rect.left:self.fixed = Trueelif self.direction == 'right':self.rect.left = min(self.target_x, self.rect.left+self.speed_x)if self.target_x == self.rect.left:self.fixed = True'''获取坐标'''def getPosition(self):return self.rect.left, self.rect.top'''设置坐标'''def setPosition(self, position):self.rect.left, self.rect.top = position

Step3：实现游戏主循环

逻辑其实很简单，就是不断检测是否有鼠标点击事件发生，如果有，则判断鼠标点击时的位置是否在某拼图块的位置区域内，若在，则选中该拼图块，否则不选中。

当有第二块拼图块被选中时，则判断两个拼图块是否满足拼图交换的条件，若满足，则交换拼图块，并获得奖励，否则不交换并取消选这两个拼图块的选中状态。

源代码如下图所示：

 '''开始游戏'''def start(self):clock = pygame.time.Clock()# 遍历整个游戏界面更新位置overall_moving = True# 指定某些对象个体更新位置individual_moving = False# 定义一些必要的变量gem_selected_xy = Nonegem_selected_xy2 = Noneswap_again = Falseadd_score = 0add_score_showtimes = 10time_pre = int(time.time())# 游戏主循环while True:for event in pygame.event.get():if event.type == pygame.QUIT or (event.type == pygame.KEYUP and event.key == pygame.K_ESCAPE):pygame.quit()sys.exit()elif event.type == pygame.MOUSEBUTTONUP:if (not overall_moving) and (not individual_moving) and (not add_score):position = pygame.mouse.get_pos()if gem_selected_xy is None:gem_selected_xy = self.checkSelected(position)else:gem_selected_xy2 = self.checkSelected(position)if gem_selected_xy2:if self.swapGem(gem_selected_xy, gem_selected_xy2):individual_moving = Trueswap_again = Falseelse:gem_selected_xy = Noneif overall_moving:overall_moving = not self.dropGems(0, 0)# 移动一次可能可以拼出多个3连块if not overall_moving:res_match = self.isMatch()add_score = self.removeMatched(res_match)if add_score > 0:overall_moving = Trueif individual_moving:gem1 = self.getGemByPos(*gem_selected_xy)gem2 = self.getGemByPos(*gem_selected_xy2)gem1.move()gem2.move()if gem1.fixed and gem2.fixed:res_match = self.isMatch()if res_match[0] == 0 and not swap_again:swap_again = Trueself.swapGem(gem_selected_xy, gem_selected_xy2)self.sounds['mismatch'].play()else:add_score = self.removeMatched(res_match)overall_moving = Trueindividual_moving = Falsegem_selected_xy = Nonegem_selected_xy2 = Noneself.screen.fill((135, 206, 235))self.drawGrids()self.gems_group.draw(self.screen)if gem_selected_xy:self.drawBlock(self.getGemByPos(*gem_selected_xy).rect)if add_score:if add_score_showtimes == 10:random.choice(self.sounds['match']).play()self.drawAddScore(add_score)add_score_showtimes -= 1if add_score_showtimes < 1:add_score_showtimes = 10add_score = 0self.remaining_time -= (int(time.time()) - time_pre)time_pre = int(time.time())self.showRemainingTime()self.drawScore()if self.remaining_time <= 0:return self.scorepygame.display.update()clock.tick(self.cfg.FPS)

Step4：游戏结束界面

游戏倒计时结束后，进入游戏结束界面，界面显示用户当前得分。同时，若用户键入R键则重新开始游戏，键入ESC键则退出游戏。

源代码实现如下：

 while True:score = game.start()flag = False# 一轮游戏结束后玩家选择重玩或者退出while True:for event in pygame.event.get():if event.type == pygame.QUIT or (event.type == pygame.KEYUP and event.key == pygame.K_ESCAPE):pygame.quit()sys.exit()elif event.type == pygame.KEYUP and event.key == pygame.K_r:flag = Trueif flag:breakscreen.fill((135, 206, 235))text0 = 'Final score: %s' % scoretext1 = 'Press <R> to restart the game.'text2 = 'Press <Esc> to quit the game.'y = 150for idx, text in enumerate([text0, text1, text2]):text_render = font.render(text, 1, (85, 65, 0))rect = text_render.get_rect()if idx == 0:rect.left, rect.top = (212, y)elif idx == 1:rect.left, rect.top = (122.5, y)else:rect.left, rect.top = (126.5, y)y += 100screen.blit(text_render, rect)pygame.display.update()game.reset()

效果展示：

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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，需要源码的可以找小编领取哟，记得关注小编的公众号哈~