source: juuso_m/Aliohjelmia/Peli.cs @ 240

#region Usings
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using Jypeli;
using Jypeli.ScreenObjects;
using Jypeli.Assets;
using AdvanceMath;
using Physics2DDotNet;
using Physics2DDotNet.Shapes;
#endregion

namespace Aliohjelmia
{
    public class Peli : RealTimeGame
    {


        void LuoPallo(double sade, double x, double y)
        {
            PhysicsObject pallo = new PhysicsObject(10, Shapes.CreateCircle(sade));
            Level.Objects.Add(pallo);

            pallo.X = x;
            pallo.Y = y;


        }
        protected override void LoadContent()
        {
            LuoPallo(40, 0, 0);
            LuoPallo(20, 0, 60);
            LuoPallo(80, 0, -120);

            for (int i = 0; i < 100; i++)
            {
                double x = RandomGen.NextDouble(Level.Left, Level.Right);
                Double y = RandomGen.NextDouble(Level.Top, Level.Bottom);
                PiirraYmpyrä(x, y);
                if (x > 0)
                    
            }

        }

        void PiirraYmpyrä(double x, double y)
        {
            PhysicsObject randompallo = new PhysicsObject(10, Shapes.CreateCircle(20));
            Level.Objects.Add(randompallo);
            randompallo.X = x;
            randompallo.Y = y;

        }

    }
}