Checkers game in Java

I have implemeted checkers game. Used mouselisteners to identify where the user has clicked and then depending on which block is empty i simply swap the values. But remember you can only move vertical or horizontal
Enjoy!!

Untitled.png 37.04K 89 downloads
Below is the complete code



/**

 *

 * @author nyfer

 */

import java.awt.*;

import java.applet.*;

import java.awt.event.*;

public class Checkers extends Applet implements MouseListener {

         int i=0,j=0,xpos,ypos,empty_x,empty_y,row,col;

	char[][] correct=new char[4][4];

	char[][] wrong=new char[4][4];

	Font f=new Font("Courier New ",Font.BOLD,20);

    /** Initializes the applet Checkers */

    public void init() {

       wrong[0][0]='L';

	   wrong[0][1]='T';

	   wrong[0][2]='Y';

	   wrong[0][3]='M';

	   wrong[1][0]='R';

	   wrong[1][1]='I';

	   wrong[1][2]='E';

	   wrong[1][3]='O';

	   wrong[2][0]='A';

	   wrong[2][1]='P';

	   wrong[2][2]='U';

	   wrong[2][3]='N';

	   wrong[3][0]='D';

	   wrong[3][1]='R';

	   wrong[3][2]='A';

	   wrong[3][3]=' ';


	addMouseListener(this);

    }


    public void paint(Graphics g)

    {

	    int x=50,y=55;

        int x1=25,y1=25;

        g.drawString("Arrange the Letters into following sentence",20,270);

        g.drawString("RATE" +" "+"YOUR" +" "+ "MIND" +" "+ "PAL",20,290);

        g.setFont(f);

        g.setColor(Color.red);

        g.fillRect(10,10,230,230);

	    String s;

	    for(int i=0;i<4;i++)

	     {    g.setColor(Color.black);

		     for(int j=0;j<4;j++)

  		     {

				 s=Character.toString(wrong[i][j]);

			     g.drawString(s,x,y);

			     x+=50;

			     g.drawRect(x1,y1,50,50);

			     x1+=50;

		     }

		     x=50;

		     y+=50;

		     y1+=50;

		     x1=25;

	     }

    }


     public void mouseClicked (MouseEvent mc)

     {

	    int x=50,y=55;

        int x1=25,y1=25;

	    xpos=mc.getX();

	    ypos=mc.getY();

	    for(int i=0;i<4;i++)

	     {

		  for(int j=0;j<4;j++)

  		   {

			 if(xpos >x1 && xpos <x1+50 && ypos >y1 && ypos <y1+50 )

			  {

			   getempty();

			   row= getrow(ypos);

			   col= getcol(xpos);

			   try

				{

				 if(row==0 && col==3)

				  {

				   if((wrong[row+1][col]==' ') || (wrong[row][col-1]==' '))

					{

					 wrong[empty_x][empty_y]=wrong[row][col];

					 wrong[row][col]=' ';

					 repaint();

					 }

					}


				 else if(row==3 && col==3)

				  {

				   if((wrong[row-1][col]==' ') || (wrong[row][col-1]==' '))

					{

					 wrong[empty_x][empty_y]=wrong[row][col];

					 wrong[row][col]=' ';

					 repaint();

					 }

				   }


				 else if(row==0)

				  {

				   if((wrong[row+1][col]==' ')|| (wrong[row][col+1]==' ') || (wrong[row][col-1]==' ') )

				    {

				     wrong[empty_x][empty_y]=wrong[row][col];

				     wrong[row][col]=' ';

				     repaint();

			         }

		            }


		           else if(row==3)

					{

					 if( (wrong[row][col+1]==' ') || (wrong[row-1][col]==' ') || (wrong[row][col-1]==' ') )

				       {

				        wrong[empty_x][empty_y]=wrong[row][col];

				        wrong[row][col]=' ';

				        repaint();

			            }

		               }


		            else if(col==0)

					 {

					  if((wrong[row+1][col]==' ')|| (wrong[row][col+1]==' ') || (wrong[row-1][col]==' '))

				        {

				         wrong[empty_x][empty_y]=wrong[row][col];

				         wrong[row][col]=' ';

				         repaint();

			             }

		               }


		             else if(col==3)

					  {

					   if((wrong[row+1][col]==' ')||(wrong[row-1][col]==' ')||(wrong[row][col-1]==' '))

				         {

				          wrong[empty_x][empty_y]=wrong[row][col];

				          wrong[row][col]=' ';

				          repaint();

			              }

		                }


		              else if(row==1|| row==2||col==1|| col==2)

		                {

				         if((wrong[row+1][col]==' ') || (wrong[row][col+1]==' ') || (wrong[row-1][col]==' ') || (wrong[row][col-1]==' '))

				          {

				           wrong[empty_x][empty_y]=wrong[row][col];

				           wrong[row][col]=' ';

				           repaint();

			               }

		                 }

			           }

			           catch(Exception e)

			           {

				           //System.out.println("message:"+e);

				        }

			       }


			     x+=50;

			     x1+=50;


		     }

		     x=50;

		     y+=50;

		     y1+=50;

		     x1=25;

	     }



     }


     public int getrow(int ty)

      {

	      if(ty<75 && ty>25) return 0;

	      else if(ty<125 && ty>75) return 1;

	      else if(ty<175 && ty>125) return 2;

	      else if(ty<225 && ty>175) return 3;

	      else return -1;

      }


      public int getcol(int tx)

       {

	       if(tx<75 && tx>25) return 0;

	      else if(tx<125 && tx>75) return 1;

	      else if(tx<175 && tx>125) return 2;

	      else if(tx<225 && tx>175) return 3;

	      else return -1;

       }


       public void getempty()

        {

	        for(i=0;i<4;i++)

	         {

		         for(j=0;j<4;j++)

		         {

	  		      if(wrong[i][j]==' ')

				     {

					  empty_x=i;

					  empty_y=j;

				      }

			       }

		      }

		  }



 public void mousePressed (MouseEvent mc) {}


 public void mouseReleased (MouseEvent mc) {}


 public void mouseEntered (MouseEvent mc) {}


 public void mouseExited (MouseEvent mc) {}


    /** This method is called from within the init() method to

     * initialize the form.

     * WARNING: Do NOT modify this code. The content of this method is

     * always regenerated by the Form Editor.

     */

    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          

    private void initComponents() {


        setLayout(new java.awt.BorderLayout());

    }// </editor-fold>                        



    // Variables declaration - do not modify                     

    // End of variables declaration                   


}

Thank you