source: 2010/30/nilaiton/Pong/Peli.cs @ 1355

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 vasenReuna;
    PhysicsObject oikeaReuna;

    PhysicsObject maila1;
    PhysicsObject maila2;
    IntMeter pelaajan1Pisteet;
    IntMeter pelaajan2Pisteet;

    protected override void Begin()
    {
        LuoKentta();
        AsetaOhjaimet();
        LisaaLaskurit();
        AloitaPeli();

        AddCollisionHandler( pallo, KasittelePallonTormays );

      

    }

    void LuoKentta()
    {
  pallo = new PhysicsObject(40.0, 40.0);
        pallo.Shape = Shapes.Triangle;
        Add(pallo);
        pallo.X = -200.0;
        pallo.Y = 0.0;
        pallo.CanRotate = true;
        pallo.KineticFriction = 0.0;
        maila1 = LuoMaila(Level.Left + 20.0, 0.0);
        maila2 = LuoMaila(Level.Right - 20.0, 0.0);
        pallo.Color = Color.Fuchsia;
        pallo.Velocity = new Vector ( 35.0, 35.0);

        PhysicsObject pallo2;

        pallo2 = new PhysicsObject(60.0, 60.0);
        pallo2.Shape = Shapes.Rectangle;
        Add(pallo2);
        pallo2.X = -200.0;
        pallo2.Y = 0.0;
        pallo2.CanRotate = true;
        pallo2.KineticFriction = 0.0;
       
        pallo2.Color = Color.SkyBlue;
        pallo2.Velocity = new Vector(35.0, 35.0);
        pallo2.Restitution = 1.0;
        AddCollisionHandler(pallo2, KasittelePallonTormays);

        PhysicsObject pallo3;

        pallo3 = new PhysicsObject(50.0, 50.0);
        pallo3.Shape = Shapes.Circle;
        Add(pallo3);
        pallo3.X = -140.0;
        pallo3.Y = 6.0;
        pallo3.CanRotate = true;
        pallo3.KineticFriction = 0.0;

        pallo3.Color = Color.Yellow;
        pallo3.Velocity = new Vector(35.0, 35.0);
        pallo3.Restitution = 1.0;
        AddCollisionHandler(pallo3, KasittelePallonTormays);

        PhysicsObject pallo4;

        pallo4 = new PhysicsObject(50.0, 50.0);
        pallo4.Shape = Shapes.Rectangle;
        Add(pallo4);
        pallo4.X = -111.0;
        pallo4.Y = 9.2;
        pallo4.CanRotate = true;
        pallo4.KineticFriction = 0.0;

        pallo4.Color = Color.YellowGreen;
        pallo4.Velocity = new Vector(35.0, 35.0);
        pallo4.Restitution = 1.0;
        AddCollisionHandler(pallo4, KasittelePallonTormays);

        PhysicsObject pallo5;

        pallo5 = new PhysicsObject(75.0, 75.0);
        pallo5.Shape = Shapes.Circle;
        Add(pallo5);
        pallo5.X = -111.0;
        pallo5.Y = 9.2;
        pallo5.CanRotate = true;
        pallo5.KineticFriction = 0.0;

        pallo5.Color = Color.DarkRed;
        pallo5.Velocity = new Vector(35.0, 35.0);
        pallo5.Restitution = 1.0;
        AddCollisionHandler(pallo5, KasittelePallonTormays);

        PhysicsObject pallo6;

        pallo6 = new PhysicsObject(50.0, 50.0);
        pallo6.Shape = Shapes.Triangle;
        Add(pallo6);
        pallo6.X = -111.0;
        pallo6.Y = 9.2;
        pallo6.CanRotate = true;
        pallo6.KineticFriction = 0.0;

        pallo6.Color = Color.Beige;
        pallo6.Velocity = new Vector(35.0, 35.0);
        pallo6.Restitution = 1.0;
        AddCollisionHandler(pallo6, KasittelePallonTormays);
      //Joo en tehnyt aliohjelmalla

        vasenReuna = Level.CreateLeftBorder();
        vasenReuna.Restitution = 1.0;
        vasenReuna.IsVisible = false;
        oikeaReuna = Level.CreateRightBorder();
        oikeaReuna.Restitution = 1.0;
        oikeaReuna.IsVisible = false;
        PhysicsObject ylaReuna = Level.CreateTopBorder();
        ylaReuna.Restitution = 1.0;
        ylaReuna.IsVisible = false;
        PhysicsObject alaReuna = Level.CreateBottomBorder();
        alaReuna.Restitution = 1.0;
        alaReuna.IsVisible = false;




        pallo.Restitution = 1.0;
        Level.BackgroundColor = Color.TransparentBlack;
        Camera.ZoomToLevel();

        AddCollisionHandler(pallo, KasittelePallonTormays);


    }
    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);
        maila.Color = Color.White;

        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.Bottom < Level.Bottom))
        {
            maila.Velocity = Vector.Zero;
            return;
        }
        if ((nopeus.Y > 0) && (maila.Top > Level.Top))
        {
            maila.Velocity = Vector.Zero;
            return;
        }

        maila.Velocity = nopeus;

    }
    void LisaaLaskurit()
    {
        pelaajan1Pisteet = LuoPisteLaskuri(Screen.Left + 100.0, Screen.Top - 100.0);
        pelaajan2Pisteet = LuoPisteLaskuri(Screen.Right - 100.0, Screen.Top - 100.0);

    }
    IntMeter LuoPisteLaskuri(double x, double y)
    {
        IntMeter laskuri = new IntMeter(0);
        laskuri.MaxValue = 10;
        Label naytto = new Label(500,500);
        naytto.BindTo(laskuri);
        naytto.X = x;
        naytto.Y = y;
        naytto.TextColor = Color.OrangeRed;
        
        Add(naytto);
        return laskuri;
    }
    void KasittelePallonTormays(PhysicsObject pallo, PhysicsObject kohde)
    {
        if (kohde == oikeaReuna)
        {
            pelaajan1Pisteet.Value += 1;
        }
        else if (kohde == vasenReuna)
        {
            pelaajan2Pisteet.Value += 1;
        }
    }

}