source: 2013/30/AleksiK/Pong/Pong/Pong/Pong.cs @ 4511

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, 200);
    Vector nopeusAlas = new Vector(0, -200);

    PhysicsObject pallo;
    PhysicsObject maila1;
    PhysicsObject maila2;

    IntMeter pelaajan1Pisteet;
    IntMeter pelaajan2Pisteet;

    PhysicsObject vasenReuna;
    PhysicsObject oikeaReuna;

    public override void Begin()
    {
        // TODO: Kirjoita ohjelmakoodisi tähän
        // PhoneBackButton.Listen(ConfirmExit, "Lopeta peli");
        
        LuoKentta();
        AsetaOhjaimet();
        LisaaLaskurit();
        AloitaPeli();
        
    }

    void LuoKentta()
    {
        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;

        Level.BackgroundColor = Color.Black;
        Camera.ZoomToLevel();

        pallo = new PhysicsObject(40.0, 40.0, Shape.Circle);
        Add(pallo);
        pallo.Restitution = 1.0;

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

        AddCollisionHandler(pallo, KasittelePallonTormays);

    }

    void AloitaPeli()
    {
        Vector impulssi = new Vector(1000.0, 0.0);
        pallo.Hit(impulssi);
    }

    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;
    }

    void AsetaOhjaimet()
    {
        Keyboard.Listen(Key.Escape, ButtonState.Pressed, ConfirmExit, null);

        Keyboard.Listen(Key.A, ButtonState.Down, AsetaNopeus, null, maila1, nopeusYlos);
        Keyboard.Listen(Key.A, ButtonState.Released, AsetaNopeus, null, maila1, Vector.Zero);
        Keyboard.Listen(Key.Z, ButtonState.Down, AsetaNopeus, null, maila1, nopeusAlas);
        Keyboard.Listen(Key.Z, ButtonState.Released, AsetaNopeus, null, maila1, Vector.Zero);

        Keyboard.Listen(Key.Up, ButtonState.Down, AsetaNopeus, null, maila2, nopeusYlos);
        Keyboard.Listen(Key.Up, ButtonState.Released, AsetaNopeus, null, maila2, Vector.Zero);
        Keyboard.Listen(Key.Down, ButtonState.Down, AsetaNopeus, null, maila2, nopeusAlas);
        Keyboard.Listen(Key.Down, ButtonState.Released, AsetaNopeus, null, maila2, Vector.Zero);

    }

    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 = 1000;

        Label naytto = new Label();
        naytto.BindTo(laskuri);
        naytto.X = x;
        naytto.Y = y;
        naytto.TextColor = Color.White;
        naytto.BorderColor = Level.BackgroundColor;
        naytto.Color = Level.BackgroundColor;
        Add(naytto);

        return laskuri;
    }

    void KasittelePallonTormays(PhysicsObject pallo, PhysicsObject kohde)
    {
        if (kohde == oikeaReuna)
        {
            pelaajan1Pisteet.Value += 1;
        }
        else if (kohde == vasenReuna)
        {
            pelaajan2Pisteet.Value += 1;
        }

    }
}