source: 2013/26/RoopeR/Pong/Pong/Pong/Pong.cs @ 4197

using System;
using System.Collections.Generic;
using Jypeli;
using Jypeli.Assets;
using Jypeli.Controls;
using Jypeli.Effects;
using Jypeli.Widgets;

public class Pong : PhysicsGame
{
    PhysicsObject pallo;

    public override void Begin()
    {
        LuoKentta();
        Aloitapeli();
        AsetaOhjaimet();
        PhoneBackButton.Listen(ConfirmExit, "Lopeta peli");
        Keyboard.Listen(Key.Escape, ButtonState.Pressed, ConfirmExit, "Lopeta peli");
    }



    void LuoKentta()
    {
        pallo = new PhysicsObject(40, 40);
        pallo.Shape = Shape.Circle;
        pallo.Restitution = 1.0;
        Add(pallo);

        LuoMaila(Level.Left + 20.0, 0.0);
        LuoMaila(Level.Right - 20.0, 0.0);

        Level.BackgroundColor = Color.Blue;
        Level.CreateBorders(1.0, false);

        Camera.ZoomToLevel();

    }
    void Aloitapeli()
    {
        Vector impulssi = new Vector(500.0, 0.0);
        pallo.Hit(impulssi);
    }

    void LuoMaila(double x, double y)
    {
        PhysicsObject maila = PhysicsObject.CreateStaticObject(20.0, 100.0);
        maila.Color = Color.Emerald;
        maila.Restitution = 1.0;
        maila.X = x;
        maila.Y = y;
        Add(maila);
    }

    void AsetaOhjaimet()
    {
        Keyboard.Listen(Key.Escape, ButtonState.Pressed, ConfirmExit, "Lopeta peli");
        Keyboard.Listen(Key.A, ButtonState.Down, LiikutaMaila1Ylos, "Pelaaja 1: Liikuta mailaa ylös");
        Keyboard.Listen(Key.A, ButtonState.Released, PysaytaMaila1, null);
    }
  void LiikutaMailaaYlos(PhysicsObject maila)  
  Vector nopeus = new Vector(0, -200);
    maila.Velocity= nopeus;
  }
void LiikutaMailaaAlas(PhysicsObject maila)
{