python之游戏开发-贪吃蛇
#!/usr/bin/env python# coding=utf-8import pygameimport sysimport random# 全局定义,screen的长和宽SCREEN_X = 600SCREEN_Y = 600# 蛇类# 点以25为单位class Snake(object): # 定义一个类--Snake,默认使用object类,如果你有更好的话,可以替换它 # 初始化各种需要的属性 [开始时默认向右/身体块x5] def __init__(self): # 定义init方法,第一个参数永远都是self本身,在__init__方法内部,可以把各种属性绑定到self,因为self指向创建实例的本身。 # 有了__init__方法,在创建实例的时候,就不能传入空的参数来,必须传入与__init__方法匹配的参数,但是self不需要穿 # 举例,如果是def __init__(self,name,score):这种类型的话,那么self不需要,但是name和score必须要有的 self.dirction = pygame.K_RIGHT self.body = [] for x in range(5): self.addnode() # 调用addnode函数,增加身体,循环5次后,蛇身初始值为5个node # 增加贪吃蛇身体长度的函数,无论何时 都在前端增加蛇块 def addnode(self): left, top = (0, 0) # 默认是0 if self.body: left, top = (self.body[0].left, self.body[0].top) node = pygame.Rect(left, top, 25, 25) # 一个node节点的大小 if self.dirction == pygame.K_LEFT: node.left -= 25 elif self.dirction == pygame.K_RIGHT: node.left += 25 elif self.dirction == pygame.K_UP: node.top -= 25 elif self.dirction == pygame.K_DOWN: node.top += 25 self.body.insert(0, node) # 插入节点 # 删除最后一个块,pop默认从最后弹出元素 def delnode(self): self.body.pop() # 死亡判断 def isdead(self): # 撞墙,身体top部位不在SCREEN中的X或者Y值中(0,600),认为撞墙死亡 if self.body[0].x not in range(SCREEN_X): return True if self.body[0].y not in range(SCREEN_Y): return True # 撞自己,头部和身体任意一部分碰撞。body[0]是第一个元素,body[1:]取的是从第二个元素开始,到完结 if self.body[0] in self.body[1:]: return True return False # 移动! def move(self): self.addnode() self.delnode() # 改变方向 但是左右、上下不能被逆向改变 def changedirection(self, curkey): LR = [pygame.K_LEFT, pygame.K_RIGHT] UD = [pygame.K_UP, pygame.K_DOWN] if curkey in LR + UD: if (curkey in LR) and (self.dirction in LR): return if (curkey in UD) and (self.dirction in UD): return self.dirction = curkey# 食物类# 方法: 放置/移除# 点以25为单位class Food: def __init__(self): self.rect = pygame.Rect(-25, 0, 25, 25) def remove(self): self.rect.x = -25 def set(self): if self.rect.x == -25: allpos = [] # 不靠墙太近 25 ~ SCREEN_X-25 之间 for pos in range(25, SCREEN_X - 25, 25): allpos.append(pos) self.rect.left = random.choice(allpos) self.rect.top = random.choice(allpos) print(self.rect)def show_text(screen, pos, text, color, font_bold=False, font_size=60, font_italic=False): # 获取系统字体,并设置文字大小 cur_font = pygame.font.SysFont("宋体", font_size) # 设置是否加粗属性 cur_font.set_bold(font_bold) # 设置是否斜体属性 cur_font.set_italic(font_italic) # 设置文字内容 text_fmt = cur_font.render(text, 1, color) # 绘制文字 screen.blit(text_fmt, pos)def main(): pygame.init() screen_size = (SCREEN_X, SCREEN_Y) screen = pygame.display.set_mode(screen_size) pygame.display.set_caption(‘Snake‘) clock = pygame.time.Clock() scores = 0 isdead = False # 蛇/食物 snake = Snake() food = Food() while True: for event in pygame.event.get(): if event.type == pygame.QUIT: sys.exit() if event.type == pygame.KEYDOWN: snake.changedirection(event.key) # 死后按space重新 if event.key == pygame.K_SPACE and isdead: return main() screen.fill((255, 255, 255)) # 画蛇身 / 每一步+1分 if not isdead: scores += 1 snake.move() for rect in snake.body: pygame.draw.rect(screen, (20, 220, 39), rect, 0) # 显示死亡文字 isdead = snake.isdead() if isdead: show_text(screen, (100, 200), ‘YOU DEAD!‘, (227, 29, 18), False, 100) show_text(screen, (150, 260), ‘press space to try again...‘, (0, 0, 22), False, 30) # 食物处理 / 吃到+50分 # 当食物rect与蛇头重合,吃掉 -> Snake增加一个Node if food.rect == snake.body[0]: scores += 50 food.remove() snake.addnode() # 食物投递 food.set() pygame.draw.rect(screen, (136, 0, 21), food.rect, 0) # 显示分数文字 show_text(screen, (50, 500), ‘Scores: ‘ + str(scores), (223, 223, 223)) pygame.display.update() clock.tick(10)if __name__ == ‘__main__‘: main()
相关推荐
taiyangshenniao 2020-10-05
flycony 2020-09-23
jacktangj 2020-09-18
YENCSDN 2020-09-15
夜斗不是神 2020-11-17
huavhuahua 2020-11-20
Yasin 2020-11-16
xiaoseyihe 2020-11-16
千锋 2020-11-15
diyanpython 2020-11-12
chunjiekid 2020-11-10
wordmhg 2020-11-06
世事一场大梦 2020-11-17
xiaoseyihe 2020-11-16
Morelia 2020-11-03
CloudXli 2020-11-03
文山羊 2020-10-31
comtop0 2020-10-31
pythonxuexi 2020-10-30