Movement of a image...

Question

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class Mouse extends JFrame implements MouseMotionListener {
     JPanel mapPl;
     JLabel label;
     public Mouse()
          Container contentPane = getContentPane();
          mapPl =new JPanel();
          mapPl.setLayout(null);
          label = new JLabel(new ImageIcon( "C://Documents and Settings//Ronald Soh//My Documents//person1.jpg" ));
          //ImageIcon imageIcon = );
          //info.setLocation(50,50);
          label.setBounds(0,0,280,50);
          mapPl.add( label );
          contentPane.add( mapPl );
          contentPane.addMouseMotionListener(this);
contentPane.addMouseListener(new PositionFinder());
contentPane.setBackground(Color.white);
          contentPane.add(mapPl, BorderLayout.CENTER);
          setSize(800,400);
          show();
     public void mouseDragged(MouseEvent e) {}
public void mouseMoved(MouseEvent e)
System.out.println("x = " + e.getX() + ", y = " + e.getY());
private class PositionFinder extends MouseAdapter
public void mousePressed(MouseEvent e)
System.out.println("Point selected: x = " + e.getX() +
", y = " + e.getY());
label.setBounds(e.getX(),e.getY(),280,50);
     public static void main( String args[] )
          Mouse ms = new Mouse();
the program code is as above..
the image will just move to the location where the mouse was clicked..
however..there some diff ..like i point to 200,244..but the image goes to like 178 166 eg..
why is this so..
then how can i apply a sort of gradual movement for the image..
like can see the image slowly moving to the location..my mouse clicked..
or wat i have done is totally wrong..
cos i trying to design a veri simple java..game..
starting by character walking around the map..
but seens diffcult at this point of time..
so should i apply the tiles based??
but i dunno how to use that...
ny assigning tiles to arrays rite..
can anyone pls enlighten me?

Answer 1

public static ArrayList calculatePath(Position p1,Position p2){
ArrayList al=new ArrayList();
ArrayList alReversed=new ArrayList();
float dy=(float)(p1.getY()-p2.getY());
float dx=(float)(p1.getX()-p2.getX());
float m=dy/dx;
float x1=p1.getX();
float x2=p2.getX();
float y1=p1.getY();
float y2=p2.getY();
//System.out.println(m);
if(Math.abs(m)<1){
if(x1<x2){
for(x1=p1.getX();x1<=p2.getX();x1++){
al.add(new Position((int)x1,Math.round(y1)));
y1=y1+m;
}else{
for(x2=p2.getX();x2<=p1.getX();x2++){
alReversed.add(new Position((int)x2,Math.round(y2)));
y2=y2+m;
for(int i=alReversed.size()-1;i>=0;i--){
al.add(alReversed.get(i));
}else{
if(p1.getY()<p2.getY()){
for(y1=p1.getY();y1<=p2.getY();y1++){
al.add(new Position(Math.round(x1),(int)y1));
x1=x1+1/m;
}else{
for(y2=p2.getY();y2<=p1.getY();y2++){
alReversed.add(new Position(Math.round(x2),(int)y2));
x2=x2+1/m;
for(int i=alReversed.size()-1;i>=0;i--){
al.add(alReversed.get(i));
return al;
I just takes two points and generates an ArrayList with all the points in between (the shortest path). It generates only the path from the first point received as argument to the second one.
A Position object has only 2 int fields....
:) **/