用Python写贪吃蛇游戏的代码实例

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：

# Write By Guobao
# 2017/4//7
#
# 贪吃蛇
# 用#做边界，*做食物，o做身体和头部
# python 3.6.1
import copy
import random
import os
import msvcrt

# the board class, used to put everything
class 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(&＃39;#&＃39;)
      else:
        line.append(&＃39;#&＃39;)
        for j in range(20):
          line.append(&＃39; &＃39;)
        line.append(&＃39;#&＃39;)
      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(&＃39;#&＃39;)
      else:
        line.append(&＃39;#&＃39;)
        for j in range(20):
          line.append(&＃39; &＃39;)
        line.append(&＃39;#&＃39;)
      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]] = &＃39;o&＃39;

    # the head
    x = snake_locations[len(snake_locations) - 1]
    self.__points[x[0]][x[1]] = &＃39;O&＃39;

  def put_food(self, food_location):
    self.__points[food_location[0]][food_location[1]] = &＃39;*&＃39;

  def show(self):
    os.system("cls")
    for i in range(22):
      for j in range(22):
        print(self.__points[i][j], end=&＃39;&＃39;)
      print()

# the snake class
class 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=&＃39;default&＃39;):

    # need to change the value, so copy it
    head = copy.deepcopy(self.__points[len(self.__points) - 1])

    # calc the "default" direction
    if direction == &＃39;default&＃39;:
      neck = self.__points[len(self.__points) - 2]
      if neck[0] > head[0]:
        direction = &＃39;up&＃39;
      elif neck[0]  head[1]:
        direction = &＃39;left&＃39;
      elif neck[1] = 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) == &＃39;#&＃39; or self.board.getPoint(new_head) == &＃39;o&＃39;:
          print(&＃39;GG&＃39;)
          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

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