最近在学Python，想做点什么来练练手，命令行的贪吃蛇一般是C的练手项目，但是一时之间找不到别的，就先做个贪吃蛇来练练简单的语法。
由于Python监听键盘很麻烦，没有C语言的kbhit()，所以这条贪吃蛇不会自己动，运行效果如下：
要求：用#表示边框，用*表示食物，o表示蛇的身体，O表示蛇头，使用wsad来移动
Python版本：3.6.1
系统环境：Win10
类：
board：棋盘，也就是游戏区域
snake：贪吃蛇，通过记录身体每个点来记录蛇的状态
game：游戏类
本来还想要个food类的，但是food只需要一个坐标，和一个新建，所以干脆使用list来保存坐标，新建food放在game里面，从逻辑上也没有太大问题
源码：
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# Write By Guobao# 2017/4//7## 贪吃蛇# 用#做边界，*做食物，o做身体和头部# python 3.6.1import copyimport randomimport osimport msvcrt# the board class, used to put everythingclass board: __points =[] def __init__(self): self.__points.clear() for i in range(22): line = [] if i == 0 or i == 21: for j in range(22): line.append('#') else: line.append('#') for j in range(20): line.append(' ') line.append('#') self.__points.append(line) def getPoint(self, location): return self.__points[location[0]][location[1]] def clear(self): self.__points.clear() for i in range(22): line = [] if i == 0 or i == 21: for j in range(22): line.append('#') else: line.append('#') for j in range(20): line.append(' ') line.append('#') self.__points.append(line) def put_snake(self, snake_locations): # clear the board self.clear() # put the snake points for x in snake_locations: self.__points[x[0]][x[1]] = 'o' # the head x = snake_locations[len(snake_locations) - 1] self.__points[x[0]][x[1]] = 'O' def put_food(self, food_location): self.__points[food_location[0]][food_location[1]] = '*' def show(self): os.system("cls") for i in range(22): for j in range(22): print(self.__points[i][j], end='') print()# the snake classclass snake: __points = [] def __init__(self): for i in range(1, 6): self.__points.append([1, i]) def getPoints(self): return self.__points # move to the next position # give the next head def move(self, next_head): self.__points.pop(0) self.__points.append(next_head) # eat the food # give the next head def eat(self, next_head): self.__points.append(next_head) # calc the next state # and return the direction def next_head(self, direction='default'): # need to change the value, so copy it head = copy.deepcopy(self.__points[len(self.__points) - 1]) # calc the "default" direction if direction == 'default': neck = self.__points[len(self.__points) - 2] if neck[0] > head[0]: direction = 'up' elif neck[0] < head[0]: direction = 'down' elif neck[1] > head[1]: direction = 'left' elif neck[1] < head[1]: direction = 'right' if direction == 'up': head[0] = head[0] - 1 elif direction == 'down': head[0] = head[0] + 1 elif direction == 'left': head[1] = head[1] - 1 elif direction == 'right': head[1] = head[1] + 1 return head# the gameclass game: board = board() snake = snake() food = [] count = 0 def __init__(self): self.new_food() self.board.clear() self.board.put_snake(self.snake.getPoints()) self.board.put_food(self.food) def new_food(self): while 1: line = random.randint(1, 20) column = random.randint(1, 20) if self.board.getPoint([column, line]) == ' ': self.food = [column, line] return def show(self): self.board.clear() self.board.put_snake(self.snake.getPoints()) self.board.put_food(self.food) self.board.show() def run(self): self.board.show() # the 'w a s d' are the directions operation_dict = {b'w': 'up', b'W': 'up', b's': 'down', b'S': 'down', b'a': 'left', b'A': 'left', b'd': 'right', b'D': 'right'} op = msvcrt.getch() while op != b'q': if op not in operation_dict: op = msvcrt.getch() else: new_head = self.snake.next_head(operation_dict[op]) # get the food if self.board.getPoint(new_head) == '*': self.snake.eat(new_head) self.count = self.count + 1 if self.count >= 15: self.show() print("Good Job") break else: self.new_food() self.show() # 反向一Q日神仙 elif new_head == self.snake.getPoints()[len(self.snake.getPoints()) - 2]: pass # rush the wall elif self.board.getPoint(new_head) == '#' or self.board.getPoint(new_head) == 'o': print('GG') break # normal move else: self.snake.move(new_head) self.show() op = msvcrt.getch()game().run() |
笔记：
1.Python 没有Switch case语句，可以利用dirt来实现
2.Python的=号是复制，复制引用，深复制需要使用copy的deepcopy()函数来实现
3.即使在成员函数内，也需要使用self来访问成员变量，这和C++、JAVA很不一样
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
