using System;
using System.Collections.Generic;
using System.Text;
using Wrak.Objects;
using System.Diagnostics;

namespace Wrak
{
    class World
    {
        static List<GameObject> gameObjects = new List<GameObject>();

        static System.Diagnostics.Stopwatch timer = new System.Diagnostics.Stopwatch();

        static float avgTime;
        static Stopwatch gameTimer;


        static public void Initialize()
        {
            gameTimer = new Stopwatch();
            gameTimer.Start();
        }

        static public float GetTime()
        {
            return (float)gameTimer.ElapsedTicks / System.Diagnostics.Stopwatch.Frequency;
        }

        static public void Add(GameObject go)
        {
            gameObjects.Add(go);
        }

        static public void Draw()
        {
            Camera.Draw();

            Stopwatch drawTimer = new Stopwatch();
            drawTimer.Start();
            foreach (IDrawable go in gameObjects)
            {
                go.Draw();
            }
            drawTimer.Stop();
            float dt = 1000 * (float)timer.ElapsedTicks / Stopwatch.Frequency;

            avgTime = 0.95F * avgTime + 0.05F * dt;

            Console.WriteLine("World draw:" + avgTime.ToString("F3") + "ms");
        }


        static public void Run()
        {

            float dt; //delta time
            timer.Stop();
            dt = (float) timer.ElapsedTicks / System.Diagnostics.Stopwatch.Frequency;
            timer.Reset();
            timer.Start();


            Camera.Run(dt);

            foreach (GameObject go in gameObjects)
            {
                IRunable ir = go as IRunable;
                if (ir!=null)
                    ir.Run(dt);
            }
        }


    }
}