Pasted

package destr.jogl.main;
 
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
 
import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
 
import destr.jogl.game2d.Game2DCanvas;
 
public class PinPongMin extends Game2DCanvas implements MouseMotionListener {
    private static final long serialVersionUID = -2012327736229675921L;
    private int mouseY = 0;
    private float clubX = 10, clubY = 0, clubW = 25, clubH = 100;
    private float ballX = 50, ballY = 50, ballW = 25, ballH = 25;
    private float ballSX = 2.5f, ballSY = 1.5f;
    
    public PinPongMin(int width, int height) {
        super(width, height);
        this.addMouseMotionListener(this);
    }
 
    @Override
    public void mouseDragged(MouseEvent e) {
        
    }
 
    @Override
    public void mouseMoved(MouseEvent e) {
        mouseY = e.getPoint().y;
    }
 
    private void drawRect(GL2 gl2, float x, float y, float w, float h) {
        gl2.glPushMatrix();
        gl2.glTranslatef(x, y, 0);
        gl2.glScalef(w, h, 0f);
        
        gl2.glBegin(GL2.GL_QUADS);
            gl2.glColor3f(1.0f, 0.0f, 0.0f);
            gl2.glVertex3f(0.0f, 0.0f, 0.0f);
            
            gl2.glColor3f(0.0f, 1.0f, 0.0f);
            gl2.glVertex3f(1.0f, 0.0f, 0.0f);
            
            gl2.glColor3f(0.0f, 0.0f, 1.0f);
            gl2.glVertex3f(1.0f, 1.0f, 0.0f);
            
            gl2.glColor3f(1.0f, 1.0f, 0.0f);
            gl2.glVertex3f(0.0f, 1.0f, 0.0f);
        gl2.glEnd();
        gl2.glPopMatrix();
    }
    
    @Override
    public void display(GLAutoDrawable drawable) {
        clubY += (mouseY - clubY) / 25;
        ballX += ballSX;
        ballY += ballSY;
        
        if(ballX < 0.0f){
            ballX = width-ballW;
        }
        if(ballX+ballW > width){
            ballSX = -ballSX;
        }
        if(ballY < 0.0f || ballY+ballH > height){
            ballSY = -ballSY;
        }
        
        if( ballX       < clubX + clubW &&
            ballX+ballW > clubX &&
            ballY       < clubY + clubH &&
            ballY+ballH > clubY
        ){
            ballSX = -ballSX;
            ballX = clubX + clubW;
        }
        
        GL2 gl2 = drawable.getGL().getGL2();
        gl2.glClear(GL2.GL_COLOR_BUFFER_BIT);
        gl2.glLoadIdentity();
        gl2.glTranslatef(-1f, 1f, 0);
        gl2.glScalef(2.0f/width, -2.0f/height, 0f);
        
        drawRect(gl2, clubX, clubY, clubW, clubH);
        drawRect(gl2, ballX, ballY, ballW, ballH);
    }
}