贪吃蛇2.0

命令行贪吃蛇2.0

实现过程 & 遇到的问题

1. 最开始想用动态数组来记录蛇，后来改成只记录头尾，发现只记录头尾没办法实现， 所以用队列来记录蛇。

2. 地图Map为X行Y列，但是Console.SetCursorPoisition（）函数的X轴是横，y轴是纵轴。Console.SetCursorPosition(HeadY, HeadX);

3. Console.KeyAvailable 用来检测按键是否按下，如果没按下保持现方向不变。

4. private int[] MoveTo=new int[8] { -1, 0, 1, 0, 0, -1, 0, 1 };根据输入将wasd映射为整数对应，前四个为HeadX的改变量，后四个为HeadY的改变量。将不同方向的函数整合为一个函数

5.定义了 LastFoodX 和 LastFoodY 来实现 吃近食物的效果，当食物到了蛇尾时，蛇长度加一。

链接: http://pan.baidu.com/s/1jIsOZrS 密码: qq8u

玩家体验

根据玩家建议加入了可重新开始和蛇反方向移动时游戏该结束。

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Collections;using System.Threading;namespace Snake{  class snake  {      private int x;      private int y;      public bool isHead;      public snake(int a,int b,bool h)      {          x = a;          y = b;          isHead = h;      }      public int getx()      {          return x;      }      public int gety()      {          return y;      }  }  class Map  {      const int WALL = -1;      const int BODY = 1;      const int HEAD = 2;      const int FOOD = 3;      const int MapHeight = 20;      const int MapWidth = 40;      private int [,] map =new int [50,50];      private int HeadX = 5;      private int HeadY = 6;      private int dir = 3;      private int FoodX;      private int FoodY;      private int LastFoodX = -1;      private int LastFoodY = -1;      private bool end = false ;      private int[] MoveTo=new int[8] { -1, 0, 1, 0, 0, -1, 0, 1 };      private Queue <snake >s = new Queue<snake>();      public Map()      {          int i, j;          snake a = new snake(HeadX, HeadY-2, false);          snake b = new snake(HeadX, HeadY-1, false);          snake c = new snake(HeadX, HeadY, true);          s.Enqueue(a);          s.Enqueue(b);          s.Enqueue(c);          for (i = 0; i <=MapHeight; i++)              for (j = 0; j <= MapWidth; j++)              {                  if (i == 0 || i == MapHeight || j == 0 || j == MapWidth)                      map[i,j] = WALL ;              }          foreach (snake item in s)          {              if (item.isHead)                  map[item.getx(), item.gety()] = HEAD ;              else map[item.getx(), item.gety()] = BODY ;          }      }      public void AddFood()      {          Random rnd = new Random();          do          {              FoodX =rnd.Next(1,MapHeight);              FoodY = rnd.Next (1,MapWidth);          } while (map[FoodX, FoodY] != 0);          map[FoodX, FoodY] = FOOD;          Console.SetCursorPosition(FoodY, FoodX);          Console.Write("$");      }      public void show()      {          Console.SetCursorPosition(0, 0);          int i, j;          for (i = 0; i <= MapHeight; i++)          {              for (j = 0; j <= MapWidth; j++)              {                  if (map[i, j] == WALL)                      Console.Write("#");                  else if (map[i, j] == HEAD)                      Console.Write("O");                  else if (map[i, j] == BODY)                      Console.Write("o");                  else Console.Write(" ");              }              Console.WriteLine();          }          AddFood();      }      public void HandleInput()      {          ConsoleKeyInfo op = new ConsoleKeyInfo();          if (Console.KeyAvailable)          {              op = Console.ReadKey(true);              switch (op.KeyChar)              {                  case 'w':                  case 'W':                      dir = 0;                      break;                  case 'a':                  case 'A':                      dir = 1;                      break;                  case 's':                  case 'S':                      dir = 2;                      break;                  case 'd':                  case 'D':                      dir = 3;                      break;              }          }      }      public void Move()      {           if (map[HeadX+MoveTo[dir] ,HeadY + MoveTo[dir+4] ]!= WALL  && map[HeadX + MoveTo[dir], HeadY + MoveTo[dir + 4]] != BODY )          {              Console.SetCursorPosition(HeadY, HeadX);              Console.Write("o");              map[HeadX, HeadY] = BODY ;              if (LastFoodX > 0 && LastFoodY>0)              {                  Console.SetCursorPosition(LastFoodY, LastFoodX);                  Console.Write("0");              }              HeadX += MoveTo[dir];              HeadY += MoveTo[dir + 4];              map[HeadX, HeadY] = HEAD ;              snake newHead = new snake(HeadX, HeadY, true);              s.Enqueue(newHead);              Console.SetCursorPosition(HeadY, HeadX);              Console.Write("O");              if(HeadX==FoodX && HeadY==FoodY)              {                  LastFoodX = HeadX;                  LastFoodY = HeadY;                  AddFood();              }              snake tail = s.Peek();              if (LastFoodX== tail.getx() && LastFoodY== tail.gety())              {                   LastFoodX = -1;                  LastFoodY = -1;              }              else              {                  s.Dequeue();                  Console.SetCursorPosition(tail.gety(), tail.getx());                  map[tail.getx(), tail.gety()] = 0;                  Console.Write(" ");              }          }          else          {              end = true;              Console.SetCursorPosition((MapWidth-9)/2, MapHeight/2-1);              Console.Write("Game Over");              Console.SetCursorPosition( 8, MapHeight / 2);              Console.Write("Press any key to restart...");          }      }      public bool isEnd()      {          return end;      }  }  class Program  {      static void Main(string[] args)      {          while(true )          {              Map m = new Map();              m.show();              while (!m.isEnd())              {                  m.HandleInput();                  m.Move();                  Thread.Sleep(200);              }              Console.ReadKey(true);          }      }  }

}