source: 2012/24/JaakkoL/Crisis Fire/FysiikkaPeli1/FysiikkaPeli1/Peli.cs @ 2908

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

class CrisisFire : PhysicsGame
{
    Vector VelocityUp = new Vector(0.0, 250.0);
    Vector VelocityDown = new Vector(0.0, -250.0);
    Vector VelocityLeft = new Vector(-250.0, 0.0);
    Vector VelocityRight = new Vector(250.0, 0.0);
    PhysicsObject Player;
    IntMeter PowerGauge;

    public override void Begin()
    {
        Field();
        SetControls();
    }
    
    void Field()
    {
        Level.CreateBorders(false);
        Level.BackgroundColor = Color.DarkGreen;
        Camera.ZoomToLevel();
        
        Player = new PhysicsObject(10.0, 10.0, Shape.Circle);
        double massP1 = 75.0;
        Player.Mass = massP1;
        Player.Color = Color.Red;
        Player.X = -400.0;
        Player.Y = 0.0;
  
        Add(Player);
    }

    void SetControls()
    {
        ControllerOne.Listen(Button.DPadUp, ButtonState.Down, SetVelocity, null, Player, VelocityUp);
        ControllerOne.Listen(Button.DPadUp, ButtonState.Released, SetVelocity, null, Player, Vector.Zero);
        ControllerOne.Listen(Button.DPadDown, ButtonState.Down, SetVelocity, null, Player, VelocityDown);
        ControllerOne.Listen(Button.DPadDown, ButtonState.Released, SetVelocity, null, Player, Vector.Zero);
        ControllerOne.Listen(Button.DPadLeft, ButtonState.Down, SetVelocity, null, Player, VelocityLeft);
        ControllerOne.Listen(Button.DPadLeft, ButtonState.Released, SetVelocity, null, Player, Vector.Zero);
        ControllerOne.Listen(Button.DPadRight, ButtonState.Down, SetVelocity, null, Player, VelocityRight);
        ControllerOne.Listen(Button.DPadRight, ButtonState.Released, SetVelocity, null, Player, Vector.Zero);
        ControllerOne.Listen(Button.Back, ButtonState.Pressed, Exit, null);
        // ControllerOne.Listen(Button.RightTrigger, ButtonState.Down, FirePrimary, null, Player, null);
        // ControllerOne.Listen(Button.LeftTrigger, ButtonState.Down, FireSecondary, null, Player, null);
    }

    void SetVelocity(PhysicsObject Player, Vector velocity)
    {
        Player.Velocity = velocity;
    }

    void CreatePowerGauge()
    {
        PowerGauge = new IntMeter(0);
 
        Label PowerMeter = new Label();
        PowerMeter.X = Screen.Left + 100;
        PowerMeter.Y = Screen.Top - 100;
        PowerMeter.TextColor = Color.White;
        PowerMeter.Color = Color.Red;

        PowerMeter.BindTo(PowerGauge);
        Add(PowerMeter);

        Label PowerText = new Label("Power: ");
        PowerText.X = Screen.Left + 50;
        PowerText.Y = Screen.Top - 100;
        PowerText.TextColor = Color.White;
        PowerText.Color = Color.Red;
    }
}