Platformer: Jumping

Today we will add jumping with some faux physics effects.

code here

And the MyWorld code:

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class MyWorld here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class MyWorld extends World
{

    /**
     * Constructor for objects of class MyWorld.
     * 
     */
    public MyWorld()
    {    
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(800, 600, 1); 

        prepare();
    }

    /**
     * Prepare the world for the start of the program. That is: create the initial
     * objects and add them to the world.
     */
    private void prepare()
    {
        Player player = new Player();
        addObject(player, 441, 32);
        Platform platform01 = new Platform();
        addObject(platform01, 10, 580);
        Platform platform02 = new Platform();
        addObject(platform02, 40, 580);
        Platform platform03 = new Platform();
        addObject(platform03, 70, 580);
        Platform platform04 = new Platform();
        addObject(platform04, 100, 580);
        Platform platform05 = new Platform();
        addObject(platform05, 130, 580);
        Platform platform06 = new Platform();
        addObject(platform06, 160, 580);
        Platform platform07 = new Platform();
        addObject(platform07, 190, 580);
        Platform platform08 = new Platform();
        addObject(platform08, 220, 580);
        Platform platform09 = new Platform();
        addObject(platform09, 250, 580);
        Platform platform10 = new Platform();
        addObject(platform10, 280, 580);
        Platform platform11 = new Platform();
        addObject(platform11, 300, 580);
        Platform platform12 = new Platform();
        addObject(platform12, 330, 580);
        Platform platform13 = new Platform();
        addObject(platform13, 360, 580);
        Platform platform14 = new Platform();
        addObject(platform14, 390, 580);
        Platform platform15 = new Platform();
        addObject(platform15, 420, 580);
        Platform platform16 = new Platform();
        addObject(platform16, 450, 580);
        Platform platform17 = new Platform();
        addObject(platform17, 480, 580);
        Platform platform18 = new Platform();
        addObject(platform18, 510, 580);
        Platform platform19 = new Platform();
        addObject(platform19, 540, 580);
        Platform platform20 = new Platform();
        addObject(platform20, 570, 580);
        Platform platform21 = new Platform();
        addObject(platform21, 600, 580);
        Platform platform22 = new Platform();
        addObject(platform22, 630, 580);
        Platform platform23 = new Platform();
        addObject(platform23, 660, 580);
        Platform platform24 = new Platform();
        addObject(platform24, 690, 580);
        Platform platform25 = new Platform();
        addObject(platform25, 720, 580);
        Platform platform26 = new Platform();
        addObject(platform26, 750, 580);
        Platform platform27 = new Platform();
        addObject(platform27, 780, 580);
        Platform platform28 = new Platform();
        addObject(platform28, 810, 580);
    }
}