Java board game

[sumys]

Hi,

I am working on a board game which is a 8x8 grid with 5 images of different colours. The objects can swap as long as they are next to each other in a row or column. If the switch results 3 or more objects are same in a row or column, they will be removed. if the switch does not result in a match, the switch will not happen. when the object is removed, the board collapses so that the objects positioned above the removed one falls down to take its place and new one falls in to the top to fill in the spaces.
I have started programming, but stuck at a point. here is the program I have written so far.
I need help with the following questions:
1. I have not implemented the dragging part yet. Since I first want to see when I move my mouse as a drag, does it give me the right location. But the mouse drag itself is not recognised when I drag the mouse from one location to another. Don't know why?
2. I click at a grid, the mouse location is correct. The mouse pressed also give the right location but the mouse release doesnot give the right object that I am printing when the mouse is released at a different location. It still gives the same object as mouse presses. I am not able to understand why?
3. Which is a good way to implement drag operation and falling down of the objects, Should I use layered pane?

I will be grateful if some one help me . thanks

package com.games;

	import java.awt.BorderLayout;
	import java.awt.Color;
	import java.awt.Component;
	import java.awt.Container;
	import java.awt.Dimension;
	import java.awt.GridLayout;
	import java.awt.Point;
	import javax.swing.ImageIcon;
	import javax.swing.JFrame;
	import javax.swing.JLabel;
	import javax.swing.JLayeredPane;
    import javax.swing.JPanel;
    import java.util.Random;
import java.awt.event.*;

	@SuppressWarnings("serial")
	public class GameBoard extends JFrame  {
	
			String []arrPic = {"Blue.png","Green.png","Purple.png","Red.png","Yellow.png"};
	    	String prefix = "C:/Users/Public/Documents/test/";
	    	JLabel[][] gameArray=new JLabel[8][8];
	    	JLabel gamepiece;
	    	GameImage gImage=new GameImage();
	    	GameImage[][] gimage=new GameImage[8][8];
	    	GameListener listener;
	    	GameImage gImagestart = new GameImage();
	    	GameImage gImageend = new GameImage();
	    	
		 JPanel gameboard=new JPanel();
		
		 class GameImage {  
			 
			 int gridrow;  
			 int gridcolumn; 
			 JLabel boardimage; 
			 public GameImage()
			 {
				 
			 }
			 public GameImage(int X, int Y, JLabel img) {  
			 gridrow = X;  
			 gridcolumn = Y;   
			 boardimage = img;  
			 }  
			    
			 public int getRow() {  
			 return gridrow;  
			 }
			 public int getColumn() {  
			 return gridcolumn;  
				 }  
			 public JLabel getImage(){
				 return boardimage;  
			 }
		
			 } 
		 class GameListener implements MouseListener, MouseMotionListener {
			    GameImage gimage;
			    
			 
			    public GameListener(GameImage gimage) {
			        this.gimage=gimage;
			        
			    }
			 
			    public void mouseMoved(MouseEvent e) {
					System.out.println("mouse is moved");
					  
					  
					  }
					  public void mouseDragged(MouseEvent event) {
					  System.out.println("mouse is dragged");
					  }
					  
					  public void mouseClicked(MouseEvent e) {
							System.out.println("The frame was clicked.");
							 JLabel label = (JLabel)e.getSource();
								
							    System.out.println("label="+ label);  
						//	 if (label.equals(gimage)) System.out.println("hurray");
							// gImagestart=gimage;
						   
							// System.out.println(" clicked at " + gimage.getRow() + gimage.getColumn());
							// System.out.println(" image is" + gimage.getImage());

					
						}

						public void mouseEntered(MouseEvent e) {
						//	System.out.println("The mouse entered the frame.");
							
						}

						public void mouseExited(MouseEvent e) {
						//	System.out.println("The mouse exited the frame.");
							
						}

						public void mousePressed(MouseEvent e) {
							
							System.out.println("mouse is pressed");
							//Component c =  gameboard.findComponentAt(e.getX(), e.getY());
							//System.out.println("c="+ c);
							 JLabel label = (JLabel)e.getSource();
							
						    System.out.println("label="+ label);   
							// gImagestart=gimage;
							// System.out.println(" clicked at " + gimage.getRow() + gimage.getColumn());
							// System.out.println(" pressed at " + e.getX() + e.getY());
							// System.out.println(" image is" + gimage.getImage());
						}

						public void mouseReleased(MouseEvent e) {
							System.out.println("The left mouse button was released.");
							 JLabel label = (JLabel)e.getSource();
							
						    System.out.println("label="+ label);  
							//System.out.println(" released at " + gimage.getRow() + gimage.getColumn());
							//System.out.println(" released at " + e.getX() + e.getY());
			}
		 }
		 public GameBoard(){
	    	
	   
	    getContentPane().add(gameboard);
	    gameboard.setLayout(new GridLayout(8,8));
	  
    	Random randomGenerator = new Random();
	    	
	    	int count=0;
	    	int current = randomGenerator.nextInt(4);
	    	for (int i=0;i<8;i++)
	    		for (int j=0;j<8;j++)
	    	{
	    		int previous=current;
	    	
	    		System.out.println("Generated : " + current);
	    		System.out.println("i="+i);
	    		System.out.println("j="+j);
	    		String images=prefix+arrPic[current];
	    		gameArray[i][j]=new JLabel(new ImageIcon(images));
	    		System.out.println("Generated path: " + images);
	    		current = randomGenerator.nextInt(4);
	    		gimage[i][j]=new GameImage(i,j,gameArray[i][j]);
	    		
	    		listener = new GameListener(gimage[i][j]);
	    		gimage[i][j].getImage().addMouseListener(listener);
	    		gameboard.add(gimage[i][j].getImage());
	    		if( current == previous )
	    		{
	    		   count++;
	    		   if (count==1){
	    		     current = randomGenerator.nextInt(4);
	    		     count=0;
	    		               }
	    		 }
	    		       
	    	}
	    	
	    		     
	    	System.out.println("Done.");		       	    				
		 }

	    	
		 
	    		public static void main(String[] args) {
	    			GameBoard frame = new GameBoard();
	    			frame.setSize(500,500);
	    	        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	    	        frame.pack();
	    	        frame.setVisible(true);	    			
	    		}
	    	}

[sumys]

Just one more, the link I gave has given for the game midas miner seems to be printed some thing else. It is wrong. Please donit use that link.

[Norm]

when I move my mouse as a drag, does it give me the right location.

Can you post the output that shows what you mean and explain what is wrong with it.

the mouse release doesnot give the right object that I am printing when the mouse is released at a different location.

Same for this.

[sumys]

1. When I move the mouse as a drag, The print statement "mouse is dragged" is not printed. So I assume drag is not working
public void mouseDragged(MouseEvent event) {
System.out.println("mouse is dragged");}

2. Mouse is pressed and released points to same object, even though I have pressed and released mouse in different locations

mouse is pressed
label=javax.swing.JLabel[,175,0,35x36,alignmentX=0.0,alignmentY=0.0,border= ,flags=8388608,maximumSize=,minimumSize=,preferred Size=,defaultIcon=C:/Users/Public/Documents/test/Blue.png,disabledIcon=,horizontalAlignment=CENTER, horizontalTextPosition=TRAILING,iconTextGap=4,labe lFor=,text=,verticalAlignment=CENTER,verticalTextP osition=CENTER]

The left mouse button was released.
label=javax.swing.JLabel[,175,0,35x36,alignmentX=0.0,alignmentY=0.0,border= ,flags=8388608,maximumSize=,minimumSize=,preferred Size=,defaultIcon=C:/Users/Public/Documents/test/Blue.png,disabledIcon=,horizontalAlignment=CENTER, horizontalTextPosition=TRAILING,iconTextGap=4,labe lFor=,text=,verticalAlignment=CENTER,verticalTextP osition=CENTER]

[Norm]

Where do you add the mouse motion listener?

Print out the mouse event instead of the label for more debug information.

[sumys]

Hehe..I have not added mouse motion listener? Now that part is working.

Still I am not able to understand why the mouse release is not pointing at the right location where I have released it.
Mouse listener only recognizes where I have pressed it.

[Norm]

Print out the mouse event instead of the label for more debug information.

Read the API doc to see what to expect from the Event object for press and release.

[sumys]

I will look into that.. thanks
I would also like know good or an easy way to implement drag operation and falling down of the objects, Should I use layered pane?

[DarrylBurke]

Don't ask the same question in more than o ne place. The new thread you started has been closed.

db

[sumys]

Sorry about that. I really need help to finish my assignment. It will be great if any one answers about a good way to implement drag ad drop of images from one grid to another and also to show the falling of images in the grid as I mentioned earliar. I have looked at use of layered pane in chessgame implementation. I am wondering if there is any other way suitable for my board game

[sumys]

Can any one give suggestions? Some ideas to drag and drop and also show the movement.