BouncingBall

package cg2d.v7animation;

import java.awt.Color;
import java.awt.Graphics;

@SuppressWarnings("serial")
public class FuckedUpBall extends AnimationPanel {

    private static final float SPEED = 100.0f;
    private static final int SIZE = 50;

    //pass middle
    private boolean state1 = false;

    //end of cycle
    private boolean state2 = false;

    private float y;

    //ball first goes down
    private int dirY = 1;


    public FuckedUpBall(){}

    @Override
    protected boolean step(double elapsedTime) {
        float delta = (float) (elapsedTime * SPEED);
        y += dirY * delta;


        if(((y + SIZE) >= getHeight()) && !state2 && (dirY == 1)){
            state2 = true;
            dirY = -1;
        }else if((y >= getHeight()) && state2 && (dirY == 1)){
            y = 1 - SIZE;
            dirY = 1;
            state1 = false;
            state2 = false;
        }


        if((y <= getHeight() / 2) && !state1 && (dirY == -1)){
            dirY = 1;
            state1 = true;
        }

        return true;
    }

    @Override
    protected void draw(Graphics g) {
        g.setColor(Color.red);
        g.fillOval(getWidth()/2 - SIZE/2, (int) y, SIZE, SIZE);
    }

    public static void main(String[] args) {
        new FuckedUpBall().run(500, 300, "Bounce", true);
    }

}