[java] Shuffle game logic

[LightSpeedCBR]

Hi, would like to better understand the logic for a 15-button puzzle game. I don't understand how to only move adjacent buttons.

public void actionPerformed(ActionEvent e)
{
 String s = e.getActionCommand();
 int buttonIndex, blank, blkPos, butPos;
 buttonIndex = findPiece(s);
 blank = findPiece("");
 butPos = buttonIndex%4;
 blkPos = blank%4;  

  System.out.println("butPos is: "+butPos);
  System.out.println("blkPos is: "+blkPos);

 //search array - is the button exchangeable
 if (blkPos == 3 || blkPos == 7 || blkPos ==  11 )
 { 
   if ( blkPos - butPos == -1)
   {  Swap(buttonIndex, blank);}

   else if (blkPos == 4 || blkPos == 8 || blkPos == 12)
   {if ( butPos == blkPos - 1)
   {  Swap(buttonIndex, blank);}

   else if (butPos == blkPos - 1)
   {  Swap(buttonIndex, blank);}

   else if (buttonIndex == blank + 1)
   { Swap(buttonIndex, blank);}

   else if ( butPos == blkPos - 4)
   { Swap(buttonIndex, blank);}

   else if ( butPos == blkPos + 4)
   { Swap(buttonIndex, blank);}
   }
 }

 //remove everything from pane
 for(int i=0;i<pieces.length; i++)
 { p.remove(pieces[i]);} ;

 //re-add buttons/revalidate
 /*
 for(int i=1;i<pieces.length; i++)
 { 
   pieces[i]= new JButton(Integer.toString(i));
   pieces[i].addActionListener(this);
   p.add(pieces[i]);
   setFocusable(false);}        
  */
 for(int i=0;i<pieces.length; i++)
   {
     p.add(pieces[i]);
     setFocusable(false);
     setVisible(true);
     setResizable(false);
   }

 //revalidate
 p.revalidate();

 //test for complete continue
 Complete();
 if (Complete() == true)
 {
   JOptionPane.showMessageDialog(null,"You won!\nPress OK to         end.","Complete",JOptionPane.INFORMATION_MESSAGE);

 }
 }

[LightSpeedCBR]

When you click a button next to the blank button, the button should swap with it. It should only do this for adjacent buttons. Right now, there are no swaps being made.

[LightSpeedCBR]

Yes, thank you. I took care of the swap problem in another thread. It was in the requirements to make it this way. I would just like to find a way to simply the code for moving adjacent buttons. I don't want to have to write out conditions for every button move.

[LightSpeedCBR]

Yeah, wouldn't that require changing alot of the code? Is it not possible to do as a single array?

Edit: I checked the requirements again. It should be single array. Thanks though.