source: 2010/27/akrauhan/Ultimate Hardcore Pong Tournament/Peli.cs @ 1068

using System;
using Jypeli;
using Jypeli.Widgets;
using Jypeli.Assets;

public class Peli : PhysicsGame
{
    Vector nopeusYlos = new Vector(0, 200);
    Vector nopeusAlas = new Vector(0, -200);

    PhysicsObject pallo;
    PhysicsObject maila1;
    PhysicsObject maila2;

    protected override void Begin()
    {
        LuoKentta();
        AsetaOhjaimet();'
        LisaaLaskurit ();
        AloitaPeli ();
        Vector impulssi = new Vector(500.0, 0.0);
        pallo.Hit(impulssi);

        
    }
     void LuoKentta()
     {
        //TODO: Alusta peli tässä
        pallo = new PhysicsObject(40.0, 40.0);
        
        pallo.Shape = Shapes.Circle;
        pallo.X = -200.0;
        pallo.Y = 0.0; 
        Level.CreateBorders( 1.0, false );
        pallo.Restitution = 1.05;
        Level.BackgroundColor = Color.Black;
        Camera.ZoomToLevel();
        Add(pallo);

        maila1 = LuoMaila (Level.Left + 20.0, 0.0);
        maila2 = LuoMaila (Level.Right - 20.0, 0.0);
     }   
        void AloitaPeli ()
        {
             Vector impulssi = new Vector ( 500.0, 0.0);
            pallo.Hit ( impulssi );
        }
        PhysicsObject LuoMaila(double x, double y)
        {
            PhysicsObject maila = PhysicsObject.CreateStaticObject(20.0, 100.0);
            maila.Shape = Shapes.Rectangle;
            maila.X = x;
            maila.Y = y;
            maila.Restitution = 1.0;
            Add(maila);

            return (maila);
        }
           
        
       void AsetaOhjaimet()
        {
            Keyboard.Listen(Key.A, ButtonState.Down, AsetaNopeus, "Pelaaja 1: Liikuta mailaa ylös", maila1, nopeusYlos);
            Keyboard.Listen(Key.A, ButtonState.Released,AsetaNopeus, null, maila1, Vector.Zero);
            Keyboard.Listen(Key.Z, ButtonState.Down, AsetaNopeus, "Pelaaja 1: Liikuta mailaa alas", maila1, nopeusAlas);
            Keyboard.Listen(Key.Z, ButtonState.Released, AsetaNopeus, null, maila1, Vector.Zero);

            Keyboard.Listen(Key.Up, ButtonState.Down, AsetaNopeus, "Pelaaja 2: Liikuta mailaa ylös", maila2, nopeusYlos);
            Keyboard.Listen(Key.Up, ButtonState.Released, AsetaNopeus, null, maila2, Vector.Zero);
            Keyboard.Listen(Key.Down, ButtonState.Down, AsetaNopeus, "Pelaaja 2: Liikuta mailaa alas", maila2, nopeusAlas);
            Keyboard.Listen(Key.Down, ButtonState.Released, AsetaNopeus, null, maila2, Vector.Zero);

            Keyboard.Listen(Key.F1, ButtonState.Pressed, ShowControlHelp, "Näytä ohjeet");
            Keyboard.Listen(Key.Escape, ButtonState.Pressed, Exit, "Poistu");
        }
        void AsetaNopeus(PhysicsObject maila, Vector nopeus)
        {
            if ((nopeus.Y < 0) && (maila.Y < Level.Bottom))
            {
                maila.Velocity = Vector.Zero;
                return;
            }
            if ( (nopeus.Y > 0 && (maila.Y > Level.Top) ))
            {
                maila.Velocity = Vector.Zero;
                return;
            }

            maila.Velocity = nopeus;

        }
        void LisaaLaskurit()
        {
        }



    }