c#写的贪吃蛇小游戏

2022-07-15 80酷酷网 80kuku.com

下面是游戏的源代码。有两个文件：Main.cs 和 Snake.cs

//
// Main.cs Begin
//
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;

namespace GreedySnake
{
///
/// formMain 的摘要说明。
///
public class formMain : System.Windows.Forms.Form
{
///
/// 必需的设计器变量。
///
private System.ComponentModel.Container components = null;
private System.Windows.Forms.MenuItem menuGame;
private System.Windows.Forms.MenuItem menuGameBegin;
private System.Windows.Forms.MenuItem menuGameEnd;
private System.Windows.Forms.MainMenu menuMain;
private System.Windows.Forms.MenuItem menuGameRebegin;
private System.Windows.Forms.MenuItem menuOption;
private System.Windows.Forms.MenuItem menuOptionTopMost;

private System.Windows.Forms.MenuItem menuOptionGameDifficulty;
private System.Windows.Forms.MenuItem menuOptionSplit;
private System.Windows.Forms.MenuItem menuOptionGameDifficultyEasy;
private System.Windows.Forms.MenuItem menuOptionGameDifficultyCommon;
private System.Windows.Forms.MenuItem menuOptionGameDifficultyDifficult;

private System.Windows.Forms.Panel panelGameRegion;
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.Label labelGameDifficulty;
private System.Windows.Forms.Label labelGameCurrentDifficulty;
private System.Windows.Forms.Label labelGameIntroduce;
private System.Windows.Forms.Label labelUp;
private System.Windows.Forms.Label labelDown;
private System.Windows.Forms.Label labelLeft;
private System.Windows.Forms.Label labelRight;
private System.Windows.Forms.Label labelStatistic;
private System.Windows.Forms.Label labelInitCount;
private System.Windows.Forms.Label labelCurrentCount;
private System.Windows.Forms.Label labelScore;

private System.Windows.Forms.Label labelEatGreenCount;

private const int ciSpeed = 80; // 游戏速度（默认难度：一般）
private int iSpeed = ciSpeed; // 游戏速度

private const int iCount = 18; // 蛇长
private const int iRadius = 5; // 蛇骨接的半径
private const int iStep = 2 * iRadius; // 两个相邻的蛇骨中心相差的距离

private const int iMaxCount = 5; // 最多能剩下的食物总数

private Snake snake;
private SnakeFood snakeFood;

public formMain()
{
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
}

#region 清理正在使用的资源
///
/// 清理所有正在使用的资源。
///
protected override void Dispose( bool disposing )
{
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
}
#endregion

#region Windows 窗体设计器生成的代码
///
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
///
private void InitializeComponent()
{
   this.menuMain = new System.Windows.Forms.MainMenu();
   this.menuGame = new System.Windows.Forms.MenuItem();
   this.menuGameBegin = new System.Windows.Forms.MenuItem();
   this.menuGameRebegin = new System.Windows.Forms.MenuItem();
   this.menuGameEnd = new System.Windows.Forms.MenuItem();
   this.menuOption = new System.Windows.Forms.MenuItem();
   this.menuOptionGameDifficulty = new System.Windows.Forms.MenuItem();
   this.menuOptionGameDifficultyEasy = new System.Windows.Forms.MenuItem();
   this.menuOptionGameDifficultyCommon = new System.Windows.Forms.MenuItem();
   this.menuOptionGameDifficultyDifficult = new System.Windows.Forms.MenuItem();
   this.menuOptionSplit = new System.Windows.Forms.MenuItem();
   this.menuOptionTopMost = new System.Windows.Forms.MenuItem();
   this.panelGameRegion = new System.Windows.Forms.Panel();
   this.panel1 = new System.Windows.Forms.Panel();
   this.labelScore = new System.Windows.Forms.Label();
   this.labelEatGreenCount = new System.Windows.Forms.Label();
   this.labelCurrentCount = new System.Windows.Forms.Label();
   this.labelInitCount = new System.Windows.Forms.Label();
   this.labelStatistic = new System.Windows.Forms.Label();
   this.labelRight = new System.Windows.Forms.Label();
   this.labelLeft = new System.Windows.Forms.Label();
   this.labelDown = new System.Windows.Forms.Label();
   this.labelUp = new System.Windows.Forms.Label();
   this.labelGameIntroduce = new System.Windows.Forms.Label();
   this.labelGameCurrentDifficulty = new System.Windows.Forms.Label();
   this.labelGameDifficulty = new System.Windows.Forms.Label();
   this.panel1.SuspendLayout();
   this.SuspendLayout();
   //
   // menuMain
   //
   this.menuMain.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                      this.menuGame,
                      this.menuOption});
   //
   // menuGame
   //
   this.menuGame.Index = 0;
   this.menuGame.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                      this.menuGameBegin,
                      this.menuGameRebegin,
                      this.menuGameEnd});
   this.menuGame.Text = "游戏(&G)";
   //
   // menuGameBegin
   //
   this.menuGameBegin.Index = 0;
   this.menuGameBegin.Text = "开始(&S)";
   this.menuGameBegin.Click += new System.EventHandler(this.menuGameBegin_Click);
   //
   // menuGameRebegin
   //
   this.menuGameRebegin.Enabled = false;
   this.menuGameRebegin.Index = 1;
   this.menuGameRebegin.Text = "重新开始（&R）";
   this.menuGameRebegin.Click += new System.EventHandler(this.menuGameRebegin_Click);
   //
   // menuGameEnd
   //
   this.menuGameEnd.Index = 2;
   this.menuGameEnd.Text = "结束(&X)";
   this.menuGameEnd.Click += new System.EventHandler(this.menuGameEnd_Click);
   //
   // menuOption
   //
   this.menuOption.Index = 1;
   this.menuOption.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                        this.menuOptionGameDifficulty,
                        this.menuOptionSplit,
                        this.menuOptionTopMost});
   this.menuOption.Text = "选项(&O)";
   //
   // menuOptionGameDifficulty
   //
   this.menuOptionGameDifficulty.Index = 0;
   this.menuOptionGameDifficulty.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                          this.menuOptionGameDifficultyEasy,
                          this.menuOptionGameDifficultyCommon,
                          this.menuOptionGameDifficultyDifficult});
   this.menuOptionGameDifficulty.Text = "游戏难度";
   //
   // menuOptionGameDifficultyEasy
   //
   this.menuOptionGameDifficultyEasy.Index = 0;
   this.menuOptionGameDifficultyEasy.RadioCheck = true;
   this.menuOptionGameDifficultyEasy.Text = "容易";
   this.menuOptionGameDifficultyEasy.Click += new System.EventHandler(this.menuOptionGameDifficultyEasy_Click);
   //
   // menuOptionGameDifficultyCommon
   //
   this.menuOptionGameDifficultyCommon.Checked = true;
   this.menuOptionGameDifficultyCommon.Index = 1;
   this.menuOptionGameDifficultyCommon.RadioCheck = true;
   this.menuOptionGameDifficultyCommon.Text = "一般";
   this.menuOptionGameDifficultyCommon.Click += new System.EventHandler(this.menuOptionGameDifficultyCommon_Click);
   //
   // menuOptionGameDifficultyDifficult
   //
   this.menuOptionGameDifficultyDifficult.Index = 2;
   this.menuOptionGameDifficultyDifficult.RadioCheck = true;
   this.menuOptionGameDifficultyDifficult.Text = "极难";
   this.menuOptionGameDifficultyDifficult.Click += new System.EventHandler(this.menuOptionGameDifficultyDifficult_Click);
   //
   // menuOptionSplit
   //
   this.menuOptionSplit.Index = 1;
   this.menuOptionSplit.Text = "-";
   //
   // menuOptionTopMost
   //
   this.menuOptionTopMost.Index = 2;
   this.menuOptionTopMost.Text = "总在最前面";
   this.menuOptionTopMost.Click += new System.EventHandler(this.menuOptionTopMost_Click);
   //
   // panelGameRegion
   //
   this.panelGameRegion.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
    | System.Windows.Forms.AnchorStyles.Left)
    | System.Windows.Forms.AnchorStyles.Right)));
   this.panelGameRegion.BackColor = System.Drawing.Color.Black;
   this.panelGameRegion.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
   this.panelGameRegion.Location = new System.Drawing.Point(8, 16);
   this.panelGameRegion.Name = "panelGameRegion";
   this.panelGameRegion.Size = new System.Drawing.Size(500, 540);
   this.panelGameRegion.TabIndex = 0;
   //
   // panel1
   //
   this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
    | System.Windows.Forms.AnchorStyles.Right)));
   this.panel1.Controls.Add(this.labelScore);
   this.panel1.Controls.Add(this.labelEatGreenCount);
   this.panel1.Controls.Add(this.labelCurrentCount);
   this.panel1.Controls.Add(this.labelInitCount);
   this.panel1.Controls.Add(this.labelStatistic);
   this.panel1.Controls.Add(this.labelRight);
   this.panel1.Controls.Add(this.labelLeft);
   this.panel1.Controls.Add(this.labelDown);
   this.panel1.Controls.Add(this.labelUp);
   this.panel1.Controls.Add(this.labelGameIntroduce);
   this.panel1.Controls.Add(this.labelGameCurrentDifficulty);
   this.panel1.Controls.Add(this.labelGameDifficulty);
   this.panel1.Location = new System.Drawing.Point(515, 8);
   this.panel1.Name = "panel1";
   this.panel1.Size = new System.Drawing.Size(104, 545);
   this.panel1.TabIndex = 3;
   //
   // labelScore
   //
   this.labelScore.ForeColor = System.Drawing.Color.White;
   this.labelScore.Location = new System.Drawing.Point(8, 184);
   this.labelScore.Name = "labelScore";
   this.labelScore.Size = new System.Drawing.Size(88, 16);
   this.labelScore.TabIndex = 11;
   this.labelScore.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelEatGreenCount
   //
   this.labelEatGreenCount.ForeColor = System.Drawing.Color.Green;
   this.labelEatGreenCount.Location = new System.Drawing.Point(8, 168);
   this.labelEatGreenCount.Name = "labelEatGreenCount";
   this.labelEatGreenCount.Size = new System.Drawing.Size(88, 16);
   this.labelEatGreenCount.TabIndex = 10;
   this.labelEatGreenCount.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelCurrentCount
   //
   this.labelCurrentCount.ForeColor = System.Drawing.Color.White;
   this.labelCurrentCount.Location = new System.Drawing.Point(8, 144);
   this.labelCurrentCount.Name = "labelCurrentCount";
   this.labelCurrentCount.Size = new System.Drawing.Size(88, 16);
   this.labelCurrentCount.TabIndex = 9;
   this.labelCurrentCount.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelInitCount
   //
   this.labelInitCount.ForeColor = System.Drawing.Color.White;
   this.labelInitCount.Location = new System.Drawing.Point(8, 119);
   this.labelInitCount.Name = "labelInitCount";
   this.labelInitCount.Size = new System.Drawing.Size(88, 16);
   this.labelInitCount.TabIndex = 8;
   this.labelInitCount.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelStatistic
   //
   this.labelStatistic.Font = new System.Drawing.Font("隶书", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
   this.labelStatistic.ForeColor = System.Drawing.Color.White;
   this.labelStatistic.Location = new System.Drawing.Point(8, 80);
   this.labelStatistic.Name = "labelStatistic";
   this.labelStatistic.Size = new System.Drawing.Size(88, 32);
   this.labelStatistic.TabIndex = 7;
   this.labelStatistic.Text = "游戏统计:";
   this.labelStatistic.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
   //
   // labelRight
   //
   this.labelRight.ForeColor = System.Drawing.Color.White;
   this.labelRight.Location = new System.Drawing.Point(8, 408);
   this.labelRight.Name = "labelRight";
   this.labelRight.Size = new System.Drawing.Size(88, 23);
   this.labelRight.TabIndex = 6;
   this.labelRight.Text = "D(Right) 右";
   this.labelRight.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelLeft
   //
   this.labelLeft.ForeColor = System.Drawing.Color.White;
   this.labelLeft.Location = new System.Drawing.Point(8, 376);
   this.labelLeft.Name = "labelLeft";
   this.labelLeft.Size = new System.Drawing.Size(88, 23);
   this.labelLeft.TabIndex = 5;
   this.labelLeft.Text = "A(Left)   左";
   this.labelLeft.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelDown
   //
   this.labelDown.ForeColor = System.Drawing.Color.White;
   this.labelDown.Location = new System.Drawing.Point(8, 344);
   this.labelDown.Name = "labelDown";
   this.labelDown.Size = new System.Drawing.Size(88, 23);
   this.labelDown.TabIndex = 4;
   this.labelDown.Text = "S(Down) 向下";
   this.labelDown.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelUp
   //
   this.labelUp.ForeColor = System.Drawing.Color.White;
   this.labelUp.Location = new System.Drawing.Point(8, 312);
   this.labelUp.Name = "labelUp";
   this.labelUp.Size = new System.Drawing.Size(88, 23);
   this.labelUp.TabIndex = 3;
   this.labelUp.Text = "W(Up)   向上";
   this.labelUp.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelGameIntroduce
   //
   this.labelGameIntroduce.Font = new System.Drawing.Font("隶书", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
   this.labelGameIntroduce.ForeColor = System.Drawing.Color.White;
   this.labelGameIntroduce.Location = new System.Drawing.Point(8, 272);
   this.labelGameIntroduce.Name = "labelGameIntroduce";
   this.labelGameIntroduce.Size = new System.Drawing.Size(88, 32);
   this.labelGameIntroduce.TabIndex = 2;
   this.labelGameIntroduce.Text = "游戏说明:";
   this.labelGameIntroduce.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
   //
   // labelGameCurrentDifficulty
   //
   this.labelGameCurrentDifficulty.ForeColor = System.Drawing.Color.White;
   this.labelGameCurrentDifficulty.Location = new System.Drawing.Point(8, 48);
   this.labelGameCurrentDifficulty.Name = "labelGameCurrentDifficulty";
   this.labelGameCurrentDifficulty.Size = new System.Drawing.Size(88, 23);
   this.labelGameCurrentDifficulty.TabIndex = 1;
   this.labelGameCurrentDifficulty.Text = "一般";
   this.labelGameCurrentDifficulty.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
   //
   // labelGameDifficulty
   //
   this.labelGameDifficulty.Font = new System.Drawing.Font("隶书", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
   this.labelGameDifficulty.ForeColor = System.Drawing.Color.White;
   this.labelGameDifficulty.Location = new System.Drawing.Point(8, 8);
   this.labelGameDifficulty.Name = "labelGameDifficulty";
   this.labelGameDifficulty.Size = new System.Drawing.Size(88, 32);
   this.labelGameDifficulty.TabIndex = 0;
   this.labelGameDifficulty.Text = "游戏难度:";
   this.labelGameDifficulty.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
   //
   // formMain
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.BackColor = System.Drawing.Color.Black;
   this.ClientSize = new System.Drawing.Size(632, 565);
   this.ControlBox = false;
   this.Controls.Add(this.panel1);
   this.Controls.Add(this.panelGameRegion);
   this.Menu = this.menuMain;
   this.Name = "formMain";
   this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
   this.Text = "贪吃蛇 - by lzumcj";
   this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
   this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.formMain_KeyDown);
   this.panel1.ResumeLayout(false);
   this.ResumeLayout(false);

}
#endregion

///
/// 应用程序的主入口点。
///
[STAThread]
static void Main()
{
Application.Run(new formMain());
}

///
/// 选择开始游戏
///
///
///
private void menuGameBegin_Click(object sender, System.EventArgs e)
{
this.menuGameBegin.Enabled = false;
this.menuGameRebegin.Enabled = true;

BeginGame();
}

///
/// 选择重新开始游戏
///
///
///
private void menuGameRebegin_Click(object sender, System.EventArgs e)
{
BeginGame();
}

///
/// 选择结束游戏
///
///
///
private void menuGameEnd_Click(object sender, System.EventArgs e)
{
ExitGame();
}

///
/// 选择游戏难度
///
///
///
private void menuOptionGameDifficultyEasy_Click(object sender, System.EventArgs e)
{
SelectGameDifficulty(sender , e);
}

private void menuOptionGameDifficultyCommon_Click(object sender, System.EventArgs e)
{
SelectGameDifficulty(sender , e);
}

private void menuOptionGameDifficultyDifficult_Click(object sender, System.EventArgs e)
{
SelectGameDifficulty(sender , e);
}

///
/// 选择总在最前面
///
///
///
private void menuOptionTopMost_Click(object sender, System.EventArgs e)
{
menuOptionTopMost.Checked = !menuOptionTopMost.Checked;
this.TopMost = menuOptionTopMost.Checked;
}

///
/// 响应键盘输入
///
///
///
private void formMain_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
   //
   // 根据键盘输入重新设置蛇的运动方向
   //
   if (snake != null)
    snake.ResetMoveDirection(e.KeyData.ToString());
}

///
/// 开始游戏（设置游戏规则）
///
private void BeginGame()
{
int iGreenCount = 0; // 吃的绿色数

   // 清除上次剩下的食物
   if (snakeFood != null)
   {
    snakeFood.Clear();
    snakeFood.Dispose();
   }
   snakeFood = new SnakeFood(this.panelGameRegion , iMaxCount , iRadius);

   // 清除上次的蛇
   if (snake != null)
   {
    snake.Clear();
    snake.Dispose();
   }

   // 初始化新蛇
   snake = new Snake(this.panelGameRegion , iCount , iRadius);
   snake.Draw();

   int k = 0;
   while (!GameOver())
   {
    Application.DoEvents();
    snake.MoveNext();

    for (int iIndex=0; iIndex    {
     if (snakeFood[iIndex].CenterX == snake.CurrentHeadX && snakeFood[iIndex].CenterY == snake.CurrentHeadY)
     {
      if (snakeFood[iIndex].ColorNode == Color.Green)
      {
       snake.AddTrail();

       iGreenCount++;
       snakeFood.RemoveFood(iIndex);
      }
     }
    }

    // 统计结果
    labelInitCount.Text = "初始蛇长:" + Convert.ToString(iCount);
    labelCurrentCount.Text = "现在蛇长:" + Convert.ToString(snake.Count);
    labelEatGreenCount.Text = "吃了:● × " + Convert.ToString(iGreenCount);
    labelScore.Text = "得分:" + Convert.ToString(iGreenCount * 20);

// 两次移动的时间间隔（即移动速度）
Thread.Sleep(iSpeed);

    // 显示随机产生的点 , 且控制当前最多只能有iMaxCount
    if (k%(iSpeed/40*30) == 0 && snakeFood.CurrentCount    {
     snakeFood.AddFood();
    }
    k++;
   }

this.menuGameRebegin.Enabled = true;

DialogResult drResult = MessageBox.Show("重新开始游戏?" , "提示" , MessageBoxButtons.OKCancel , MessageBoxIcon.Information , MessageBoxDefaultButton.Button1);

   if (drResult == DialogResult.OK)
    BeginGame();
   else
    ExitGame();
}

///
/// 判断游戏是否满足结束条件
///
///
private bool GameOver()
{
   if (snake != null)
   {
    snake.Check();
    return snake.IsEatself || snake.IsOutOfRange;
   }

return false;
}

///
/// 退出游戏
///
private void ExitGame()
{
   if (Application.AllowQuit)
   {
    Application.ExitThread();
    Application.Exit();
   }
}

///
/// 选择游戏难度（互斥）
///
///
///
private void SelectGameDifficulty(object sender , EventArgs e)
{
   if (sender == menuOptionGameDifficultyEasy)
   {
    menuOptionGameDifficultyEasy.Checked = true;
    menuOptionGameDifficultyCommon.Checked = false;
    menuOptionGameDifficultyDifficult.Checked = false;

labelGameCurrentDifficulty.Text = menuOptionGameDifficultyEasy.Text;;

    iSpeed = ciSpeed * 2;
   }
   else if (sender == menuOptionGameDifficultyCommon)
   {
    menuOptionGameDifficultyEasy.Checked = false;
    menuOptionGameDifficultyCommon.Checked = true;
    menuOptionGameDifficultyDifficult.Checked = false;

labelGameCurrentDifficulty.Text = menuOptionGameDifficultyCommon.Text;

    iSpeed = ciSpeed;
   }
   else if (sender == menuOptionGameDifficultyDifficult)
   {
    menuOptionGameDifficultyEasy.Checked = false;
    menuOptionGameDifficultyCommon.Checked = false;
    menuOptionGameDifficultyDifficult.Checked = true;

labelGameCurrentDifficulty.Text = menuOptionGameDifficultyDifficult.Text;

iSpeed = ciSpeed / 2;
}
}
}
}
//
// Main.cs End
//

//
// Snake.cs Begin
//
using System;
using System.Collections;
using System.Drawing;
using System.Windows.Forms;
using System.Timers;

namespace GreedySnake
{
#region Snake 蛇身
///
/// Snake 的摘要说明。
///
public class Snake
{
private Control dcControl;

private static int iMoveDirection = 0x1000; // 蛇的运动方向，初始化为 right - 0x1000

private int iCount; // 骨节的总数
private int iRadius; // 骨节的半径

private static int iCurrentHeadX; // 当前蛇头的中心坐标 X
private static int iCurrentHeadY; // 当前蛇头的中心坐标 Y

private static int iCurrentTrailX; // 当前蛇尾的中心坐标 X
private static int iCurrentTrailY; // 当前蛇尾的中心坐标 Y

private static int iNextHeadX; // 下一时刻蛇头的中心坐标 X
private static int iNextHeadY; // 下一时刻蛇头的中心坐标 Y

private static int iPreTrailX; // 前一时刻蛇尾的中心坐标 X
private static int iPreTrailY; // 前一时刻蛇尾的中心坐标 Y

private static ArrayList alSnake; // 存放整条蛇
private bool bDisposing = true;

private bool bIsEatself = false; // 是否吃自己
private bool bIsOutOfRange = false; // 是否超出允许活动的范围

public Control DcControl
{
   set { dcControl = value; }
   get { return dcControl;}
}
public int MoveDirection
{
   set { iMoveDirection = value; }
   get { return iMoveDirection; }
}

public int Count
{
set { iCount = value; }
get { return iCount; }
}

public int Radius
{
set { iRadius = value; }
get { return iRadius; }
}

public int CurrentHeadX
{
set { iCurrentHeadX = value; }
get { return iCurrentHeadX; }
}

public int CurrentHeadY
{
set { iCurrentHeadY = value; }
get { return iCurrentHeadY; }
}

public int CurrentTrailX
{
set { iCurrentTrailX = value; }
get { return iCurrentTrailX; }
}

public int CurrentTrailY
{
set { iCurrentTrailY = value; }
get { return iCurrentTrailY; }
}

public int NextHeadX
{
set { iNextHeadX = value; }
get { return iNextHeadX; }
}

public int NextHeadY
{
set { iNextHeadY = value; }
get { return iNextHeadY; }
}

public int PreTrailX
{
set { iPreTrailX = value; }
get { return iPreTrailX; }
}

public int PreTrailY
{
set { iPreTrailY = value; }
get { return iPreTrailY; }
}

public bool IsEatself
{
set { bIsEatself = value; }
get { return bIsEatself; }
}

public bool IsOutOfRange
{
set { bIsOutOfRange = value; }
get { return bIsOutOfRange;}
}

public Snake() : this(null , 20 , 5)
{
   //
   // TODO: 在此处添加构造函数逻辑
   //
}

public Snake(Control control , int iCount , int iRadius)
{
DcControl = control;

Count = iCount;
Radius = iRadius;

CurrentHeadX = CurrentTrailX = PreTrailX = 5;
CurrentHeadY = CurrentTrailY = PreTrailY = 5;

Initialize();
}

~Snake()
{
Dispose(false);
}

// 初始化蛇
private void Initialize()
{
alSnake = new ArrayList();

   for (int i=0 ; i   {
    alSnake.Insert(0 , new SnakeNode(DcControl , CurrentHeadX , CurrentHeadY , Radius));
    CurrentHeadX += 2 * Radius;
   }

CurrentHeadX -= 2 * Radius;

NextHeadX = CurrentHeadX + 2 * Radius;
NextHeadY = CurrentHeadY;
}

public void Dispose()
{
   Dispose(true);
   GC.SuppressFinalize(this);
}

public void Dispose( bool bDisposing )
{
   if (bDisposing)
   {
    // 调用 Dispose 处理受控资源中的字段
    MoveDirection = 0x1000;
    CurrentHeadX = CurrentHeadY = NextHeadX = NextHeadY = 5;
    alSnake.Clear();
   }
   // 清除非受控资源
}

// 加头
public void AddHead()
{
alSnake.Insert(0 , new SnakeNode(DcControl , NextHeadX , NextHeadY , Radius));

CurrentHeadX = NextHeadX;
CurrentHeadY = NextHeadY;

Count++;
}

// 加尾
public void AddTrail()
{
alSnake.Add(new SnakeNode(DcControl , PreTrailX , PreTrailY , Radius));

Count++;

((SnakeNode)alSnake[Count - 1]).Draw();
}

// 去尾
public void RemoveTrail()
{
   if (alSnake.Count>1)
   {
    PreTrailX = ((SnakeNode)alSnake[Count - 1]).CenterX;
    PreTrailY = ((SnakeNode)alSnake[Count - 1]).CenterY;

alSnake.RemoveAt(alSnake.Count - 1);

Count--;

    CurrentTrailX = ((SnakeNode)alSnake[Count - 1]).CenterX;
    CurrentTrailY = ((SnakeNode)alSnake[Count - 1]).CenterY;
   }
}

// 移动到下一位置
public void MoveNext()
{
   // 加头
   AddHead();
   // 画头
   ((SnakeNode)alSnake[0]).Draw();
   // 清除尾（将蛇尾用背景色填充）
   ((SnakeNode)alSnake[Count-1]).Clear();
   // 去尾（将蛇尾从 ArrayList 中删除）
   RemoveTrail();
}

// 画整条蛇
public void Draw()
{
   for (int i=0; i   {
    ((SnakeNode)alSnake[i]).Draw();
   }
}

// 清除整条蛇
public void Clear()
{
   for (int i=0; i   {
    ((SnakeNode)alSnake[i]).Clear();
   }
}

// 重设运动方向
public void ResetMoveDirection(string strKeyData)
{
// 获取键盘输入
int iKeyDirection;

   switch (strKeyData)
   {
    case "W":
    case "Up":
     iKeyDirection = 0x0001;
     break;
    case "S":
    case "Down":
     iKeyDirection = 0x0010;
     break;
    case "A":
    case "Left":
     iKeyDirection = 0x0100;
     break;
    case "D":
    case "Right":
     iKeyDirection = 0x1000;
     break;
    default:
     iKeyDirection = 0x0010;
     break;
   }

   // 重设蛇的运动方向（综合按键方向和当前蛇的运动方向考虑）
   int iDirection = iKeyDirection | MoveDirection;
   if (iDirection == 0x0011 || iDirection == 0x1100)
    MoveDirection = MoveDirection; // 运动方向保持不变
   else
    MoveDirection = iKeyDirection; // 运动方向等于按键方向
}

// 是否超出范围
public void Check()
{
GetNextHeadXY();

   // 检查是否吃自己
   foreach (SnakeNode sn in alSnake)
   {
    if (sn.CenterX == NextHeadX && sn.CenterY == NextHeadY)
    {
     IsEatself = true;
     break;
    }
   }

// 检查是否超出允许活动的范围
IsOutOfRange = NextHeadX<0 || NextHeadX>DcControl.Width || NextHeadY<0 || NextHeadY>DcControl.Height;
}

// 预先算出下个位置坐标
private void GetNextHeadXY()
{
   switch (MoveDirection)
   {
    case 0x0001:
     NextHeadX = CurrentHeadX;
     NextHeadY = CurrentHeadY - 2 * Radius;
     break;
    case 0x0010:
     NextHeadX = CurrentHeadX;
     NextHeadY = CurrentHeadY + 2 * Radius;
     break;
    case 0x0100:
     NextHeadX = CurrentHeadX - 2 * Radius;
     NextHeadY = CurrentHeadY;
     break;
    case 0x1000:
     NextHeadX = CurrentHeadX + 2 * Radius;
     NextHeadY = CurrentHeadY;
     break;
    default:
     break;
   }
}
}
#endregion

#region SnakeNode 蛇的骨节
///
/// Snake Note
/// 蛇的骨节
///
public class SnakeNode
{
private Control dcControl; // 用于画图的控件

private int iCenterX; // 中心坐标 X
private int iCenterY; // 中心坐标 Y
private int iRadius; // 半径
private Color colorNode; // 颜色

public Control DcControl
{
set { dcControl = value; }
get { return dcControl; }
}

public int CenterX
{
set { iCenterX = value; }
get { return iCenterX; }
}

public int CenterY
{
set { iCenterY = value; }
get { return iCenterY; }
}

public int Radius
{
set { iRadius = value; }
get { return iRadius; }
}

public Color ColorNode
{
set { colorNode = value; }
get { return colorNode; }
}

private bool bDisposing = true;

public SnakeNode() : this(null , 0 , 0 , 5)
{
}

public SnakeNode(Control control , int iX , int iY , int iR)
{
DcControl = control;

   CenterX = iX;
   CenterY = iY;
   Radius = iR;
}

~SnakeNode()
{
   Dispose(false);
}

public void Dispose()
{
   Dispose(true);
   GC.SuppressFinalize(this);
}

public void Dispose( bool bDisposing )
{
   if (bDisposing)
   {
    // 调用 Dispose 处理受控资源中的字段
    CenterX = CenterY = 0;
    Radius = 5;
   }
   // 清除非受控资源
}

// 画自身
public void Draw()
{
Draw(Color.Blue);
}

public void Draw(Color color)
{
   // 以指定颜色画圆
   ColorNode = color;
   DrawCircle(ColorNode);
}

// 清除
public void Clear()
{
// 以控件的背景色画圆
DrawCircle(DcControl.BackColor);
}

// 以骨节的中心画圆
public void DrawCircle(Color color)
{
   using (Graphics dc = DcControl.CreateGraphics())
   {
    // 创建实心的笔刷
    SolidBrush sbBrush = new SolidBrush(color);
    // 创建圆的区间范围
    float x = CenterX - Radius;
    float y = CenterY - Radius;
    float width = 2 * Radius;
    float height = 2 * Radius;
    // 创建开始和扫过的弧度
    float fStartAngle = 0.0F;
    float fSweepAngle = 360.0F;
    // 画圆
    dc.FillPie(sbBrush , x , y , width , height , fStartAngle , fSweepAngle);
   }
}
}
#endregion

#region SnakeFood 蛇的食物
///
/// SnakeFood 的摘要说明。
///
public class SnakeFood
{
private Control dcControl;

private int iMaxCount; // 最多能剩下的食物总数
private int iCurrentCount; // 当前剩下的食物总数
private int iRadius; // 骨节的半径

private Color[] acolor = new Color[]{Color.Red , Color.Green , Color.Yellow}; // 新点的颜色取值范围
private static ArrayList alSnakeFood; // 蛇的食物
private bool bDisposing = true;

public Control DcControl
{
   set { dcControl = value; }
   get { return dcControl;}
}
public int MaxCount
{
   set { iMaxCount = value; }
   get { return iMaxCount; }
}

public int CurrentCount
{
set { iCurrentCount = value;}
get { return iCurrentCount;}
}

public int Radius
{
set { iRadius = value; }
get { return iRadius; }
}

public SnakeNode this[int index]
{
   get
   {
    if (index<0 || index>=CurrentCount)
    {
     throw new IndexOutOfRangeException();
    }
    return (SnakeNode)alSnakeFood[index];
   }
}

public SnakeFood() : this(null , 5 , 5)
{
}

public SnakeFood(Control control , int iMaxCount , int iRadius)
{
DcControl = control;

   MaxCount = iMaxCount;
   CurrentCount = 0;
   Radius = iRadius;

alSnakeFood = new ArrayList();
}

~SnakeFood()
{
Dispose(false);
}

public void Dispose()
{
   Dispose(true);
   GC.SuppressFinalize(this);
}

public void Dispose( bool bDisposing )
{
   if (bDisposing)
   {
    // 调用 Dispose 处理受控资源中的字段
    CurrentCount = 0;
    alSnakeFood.Clear();
   }
   // 清除非受控资源
}

// 添加食物
public void AddFood()
{
Random random = new Random();

   int iStep = Radius + Radius;
   int iX = Radius + iStep * random.Next(0 , DcControl.Width/iStep);
   int iY = Radius + iStep * random.Next(0 , DcControl.Height/iStep);

SnakeNode sn = new SnakeNode(DcControl , iX , iY , iRadius);

   Random randomIndex = new Random();
   Color color = acolor[randomIndex.Next(0 , acolor.Length)];
   color = Color.Green;
   sn.Draw(color);

alSnakeFood.Add(sn);

// 当前剩下的食物总数加1
CurrentCount++;
}

// 删除被吃掉的食物
public void RemoveFood(int iIndex)
{
   if (CurrentCount>0)
   {
    alSnakeFood.RemoveAt(iIndex);

    // 当前剩下的食物总数减1
    CurrentCount--;
   }
}

// 画所有食物
public void Draw()
{
   foreach (SnakeNode sn in alSnakeFood)
   {
    sn.Draw();
   }
}

// 清除所有食物
public void Clear()
{
   foreach (SnakeNode sn in alSnakeFood)
   {
    sn.Clear();
   }
}
}
#endregion
}
//
// Snake.cs End
//