source: 2013/26/MikkoTa/Pong/Pong/Pong/Pong.cs @ 4184

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

public class Pong : PhysicsGame
{
    Vector nopeusYlos = new Vector(0, 500);
    Vector nopeusAlas = new Vector(0, -500);
    PhysicsObject maila1;
    PhysicsObject maila2;
    PhysicsObject pallo;

    public override void Begin()
    {

        LuoKentta();
        AsetaOhjaimet();
        AloitaPeli();
        LuoPisteLaskur();

    }
    void LuoKentta()
    {
        PhysicsObject vasenReuna = Level.CreateLeftBorder();
        vasenReuna.Restitution = 1.0;
        vasenReuna.IsVisible = false;
        PhysicsObject oikeaReuna = Level.CreateRightBorder();
        oikeaReuna.Restitution = 1.0;
        oikeaReuna.IsVisible = false;
        PhysicsObject alaReuna = Level.CreateBottomBorder();
        alaReuna.Restitution = 1.0;
        alaReuna.IsVisible = false;
        PhysicsObject ylaReuna = Level.CreateTopBorder();
        ylaReuna.Restitution = 1.0;
        ylaReuna.IsVisible = false;
        
        
        
        pallo = new PhysicsObject(20.0, 20.0);
        Add(pallo);
        pallo.Shape = Shape.Circle;
        pallo.Color = Color.White;
        pallo.Restitution = 1.0;

        maila1 = LuoMaila(Level.Left + 20.0, 0.0);
        maila2 = LuoMaila(Level.Right - 20.0, 0.0);

        Camera.ZoomToLevel();

        Level.BackgroundColor = Color.Black;
    }
    void AloitaPeli()
    {
        Vector impulssi = new Vector(500.0, 0.0);
        pallo.Hit(impulssi);
    }
    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, "Ohjeet");
        Keyboard.Listen(Key.Escape, ButtonState.Pressed, Exit, "Lopeta");

    }
    void AsetaNopeus(PhysicsObject maila, Vector nopeus)
    {
        if ((nopeus.Y > 0) && (maila.Top > Level.Top))
        {
            maila.Velocity = Vector.Zero;
            return;
        } 
        if ((nopeus.Y < 0) && (maila.Bottom < Level.Bottom))
        {
            maila.Velocity = Vector.Zero;
            return;
        }
        maila.Velocity = nopeus;
    }
    IntMeter LuoPisteLaskuri()
    {
        IntMeter laskuri = new IntMeter(0);
        laskuri.MaxValue = 10;
        return laskuri;
    }    
    PhysicsObject LuoMaila(double x, double y)
    {

        PhysicsObject maila = PhysicsObject.CreateStaticObject(20.0, 100.0);
        maila.Shape = Shape.Rectangle;
        maila.X = x;
        maila.Y = y;
        maila.Restitution = 1.0;
        Add(maila);
        return maila;
    }
}