source: 2010/30/alkivima/Car Duels/Peli.cs @ 1330

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

public class Peli : TopDownPhysicsGame
{
    protected override void Begin()
    {
        KineticFriction = 1.0; // Asetetaan kitka

        Automobile auto = new Automobile(80, 40);
        auto.Mass = 100.0;
        auto.Color = new Color(1, 1, 1);
        Add(auto);

        Automobile auto2 = new Automobile(80, 40);
        auto2.Mass = 100.0;
        auto2.Color = new Color(255, 255, 255);
        Add(auto2);

        Keyboard.Listen(Key.F1, ButtonState.Pressed, ShowControlHelp, "Näytä ohjeet");
        Keyboard.Listen(Key.Escape, ButtonState.Pressed, Exit, "Poistu pelistä");
        Keyboard.Listen(Key.Up, ButtonState.Down, kiihdyta, "Kiihdytä", auto);
        Keyboard.Listen(Key.Down, ButtonState.Down, jarruta, "Jarruta", auto);
        Keyboard.Listen(Key.Left, ButtonState.Down, kaanny, "Käänny vasemmalle", auto, 2.0);
        Keyboard.Listen(Key.Right, ButtonState.Down, kaanny, "Käänny oikealle", auto, -2.0);

        Keyboard.Listen(Key.F1, ButtonState.Pressed, ShowControlHelp, "Näytä ohjeet");
        Keyboard.Listen(Key.Escape, ButtonState.Pressed, Exit, "Poistu pelistä");
        Keyboard.Listen(Key.W, ButtonState.Down, kiihdyta, "Kiihdytä", auto2);
        Keyboard.Listen(Key.S, ButtonState.Down, jarruta, "Jarruta", auto2);
        Keyboard.Listen(Key.A, ButtonState.Down, kaanny, "Käänny vasemmalle", auto2, 2.0);
        Keyboard.Listen(Key.D, ButtonState.Down, kaanny, "Käänny oikealle", auto2, -2.0);

        ShowControlHelp();

        Kentta();
    }

    void kiihdyta(Automobile auto)
    {
        auto.Accelerate(Time.SinceLastUpdate.TotalSeconds);
    }

    void jarruta(Automobile auto)
    {
        auto.Brake(Time.SinceLastUpdate.TotalSeconds);
    }

    void kaanny(Automobile auto, double kaannos)
    {
        auto.Angle = Angle.Degrees(auto.Angle.Degree + kaannos);
    }

    void Kentta()
    {
        Level.BackgroundColor = Color.ForestGreen;
    }
}