拼图游戏

本例创建一个简单的拼图游戏，将一个打乱的图形拼合完整，本例用数字替代图形，游戏界面如图。

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程序代码如下。

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
namespace eg50_pintu
{
  public partial class MainForm : Form
  {
    int flag;
    private int count;
    private int[] numbers=new int[16];
    public MainForm()
    {
      InitializeComponent();
    }

    void T1KeyDown(object sender, KeyEventArgs e)
    {
      if(flag==0)
      {
        string keyId=e.KeyCode.ToString();
        switch(keyId)
        {
            case "Right":LeftPress();
            break;
            case "Left":RightPress();
            break;
            case "Down":UpPress();
            break;
            case "Up":DownPress();
            break;
        }
      }
    }
    private void assign()
    {
      if(numbers[0]!=-1)
        b1.Text=numbers[0].ToString();
      else
      {
        b1.Text="*";
        b1.Visible=false;
      }
      if(numbers[1]!=-1)
        b2.Text=numbers[1].ToString();
      else 
      {
        b2.Text="*";
        b2.Visible=false;
      }
      if(numbers[2]!=-1)
        b3.Text=numbers[2].ToString();
      else
      {
        b3.Text="*";
        b3.Visible=false;
      }
      if(numbers[3]!=-1)
        b4.Text=numbers[3].ToString();
      else
      {
        b4.Text="*";
        b4.Visible=false;
      }
      if(numbers[4]!=-1)
        b5.Text=numbers[4].ToString();
      else
      {
        b5.Text="*";
        b5.Visible=false;
      }
      if(numbers[5]!=-1)
        b6.Text=numbers[5].ToString();
      else
      {
        b6.Text="*";
        b6.Visible=false;
      }
      if(numbers[6]!=-1)
        b7.Text=numbers[6].ToString();
      else
      {
        b7.Text="*";
        b7.Visible=false;
      }
      if(numbers[7]!=-1)
        b8.Text=numbers[7].ToString();
      else
      {
        b8.Text="*";
        b8.Visible=false;
      }
      if(numbers[8]!=-1)
        b9.Text=numbers[8].ToString();
      else
      {
        b9.Text="*";
        b9.Visible=false;
      }
      if(numbers[9]!=-1)
        b10.Text=numbers[9].ToString();
      else
      {
        b10.Text="*";
        b10.Visible=false;
      }
      if(numbers[10]!=-1)
        b11.Text=numbers[10].ToString();
      else
      {
        b11.Text="*";
        b11.Visible=false;
      }
      if(numbers[11]!=-1)
        b12.Text=numbers[11].ToString();
      else
      {
        b12.Text="*";
        b12.Visible=false;
      }
      if(numbers[12]!=-1)
        b13.Text=numbers[12].ToString();
      else
      {
        b13.Text="*";
        b13.Visible=false;
      }
      if(numbers[13]!=-1)
        b14.Text=numbers[13].ToString();
      else
      {
        b14.Text="*";
        b14.Visible=false;
      }
      if(numbers[14]!=-1)
        b15.Text=numbers[14].ToString();
      else
      {
        b15.Text="*";
        b15.Visible=false;
      }
      if(numbers[15]!=-1)
        b16.Text=numbers[15].ToString();
      else
      {
        b16.Text="*";
        b16.Visible=false;
      }
    }
    public void RightPress()
    {
      int chk;
      int loc;
      int swap;
      loc=locator();
      if(((loc+1)%4)==0)
        return;
      swap=numbers[loc+1];
      numbers[loc+1]=-1;
      numbers[loc]=swap;
      MakeVisible();
      assign();
      chk=CheckForCompletion();
      lbl3.Text=count.ToString();
      if(chk==0)
      {
        count++;
        lbl3.Text=count.ToString();
      }
      if(chk==1)
      {
        flag=1;
        lbl1.Visible=true;
      }
    }
    public void LeftPress()
    {
      int chk;
      int loc;
      int swap;
      loc=locator();
      if((loc%4)==0)
        return;
      swap=numbers[loc-1];
      numbers[loc-1]=-1;
      numbers[loc]=swap;
      MakeVisible();
      assign();
      chk=CheckForCompletion();
      lbl3.Text=count.ToString();
      if(chk==0)
      {
        count++;
        lbl3.Text=count.ToString();
      }
      if(chk==1)
      {
        flag=1;
        lbl1.Visible=true;
      }
    }
    public void UpPress()
    {
      int chk;
      int loc;
      int swap;
      loc=locator();
      if(loc<=3)
        return;
      swap=numbers[loc-4];
      numbers[loc]=swap;
      MakeVisible();
      assign();
      chk=CheckForCompletion();
      lbl3.Text=count.ToString();
      if(chk==0)
      {
        count++;
        lbl3.Text=count.ToString();
      }
      if(chk==1)
      {
        flag=1;
        lbl1.Visible=true;
      }
    }
    public void DownPress()
    {
      int chk;
      int loc;
      int swap;
      loc=locator();
      if(loc>1)
        return;
      swap=numbers[loc+4];
      numbers[loc]=swap;
      MakeVisible();
      assign();
      chk=CheckForCompletion();
      lbl3.Text=count.ToString();
      if(chk==0)
      {
        count++;
        lbl3.Text=count.ToString();
      }
      if(chk==1)
      {
        flag=1;
        lbl1.Visible=true;
      }
    }
    private int locator()
    {
      int i;
      for(i=0;i<=15;i++)
      {
        if(numbers[i]==-1)
          break;
        else continue;
      }
      return i;
    }
    private int CheckForCompletion()
    {
      int j;
      for(int i=0;i<=15;i++)
      {
        if(numbers[i]==-1)
          numbers[i]=16;
      }
      for (j=0;j<=14;j++)
      {
        if(numbers[j]>numbers[j+1])
          break;
      }
      if(j==15)
        return 1;
      else 
      {
        for(int i=0;i<=15;i++)
        {
          if(numbers[i]==16)
            numbers[i]=-1;
        }
        return 0;
      }
    }
    private void MakeVisible()
    {
      b1.Visible=true;
      b2.Visible=true;
      b3.Visible=true;
      b4.Visible=true;
      b5.Visible=true;
      b6.Visible=true;
      b7.Visible=true;
      b8.Visible=true;
      b9.Visible=true;
      b10.Visible=true;
      b11.Visible=true;
      b12.Visible=true;
      b13.Visible=true;
      b14.Visible=true;
      b15.Visible=true;
      b16.Visible=true;
    }
  }
}