using System;
using System.Drawing;
using System.Collections.Generic;
using System.Threading;

using OpenTK.Graphics;
using OpenTK.Graphics.OpenGL;
using OpenTK;

using org.budnhead.core;
using org.budnhead.exceptions;
using org.budnhead.graphics.primitives;

namespace org.budnhead.graphics
{

	public class GLWindow : GameWindow
	{
		private Point mouseCapturePosition;
		private bool mouseCaptured;

		private float arcUpDown,
					arcLeftRight;

		private	Vector3	lookAt;
		private float	lookDistance;


		GLCamera	sceneCamera;
		Scene		scene;

		public GLWindow()
			:base(600, 600,
			      GraphicsMode.Default, 
			      "nhEngine", 
			      GameWindowFlags.Default, 
			      DisplayDevice.Default, 
			      3, 3,
			      GraphicsContextFlags.ForwardCompatible)
		{
			VSync = VSyncMode.On;
			sceneCamera = new GLCamera();
			scene = new Scene(sceneCamera);
		}

		public Scene Scene {
			get { return this.scene; }
		}
		/*
		protected override void OnLoad(EventArgs e)
		{
			base.OnLoad(e);
			GL.ClearColor(0.15f, 0.15f, 0.15f, 0.0f);
			GL.Enable(EnableCap.DepthTest);
			GL.Enable(EnableCap.Normalize);
			GL.Enable(EnableCap.Blend);
			GL.BlendFunc(BlendingFactorSrc.SrcAlpha,BlendingFactorDest.OneMinusSrcAlpha);

			lookAt = new Vector3(0,0,SquaredMap.maxHeight);
			lookDistance = 2048;
			arcUpDown = MathHelper.PiOver6;
			arcLeftRight = MathHelper.PiOver4;
			sceneCamera.setFoV(MathHelper.PiOver2);

			setupCamera();
		}

		protected override void OnResize(EventArgs e)
		{
			base.OnResize(e);

			GL.Viewport(ClientRectangle.X, ClientRectangle.Y, ClientRectangle.Width, ClientRectangle.Height);
			sceneCamera.setViewport(ClientRectangle.Width, ClientRectangle.Height);
		}


		protected void markMouse(float x,float y){
			try {
				Vector3 P = sceneCamera.Position;
				Vector3 V = sceneCamera.pickRay(x,y);

				Vector3 isect = SquaredMap.activeMap.intersect(P,V);
				Vector2 tile = SquaredMap.activeMap.toTile(isect.Xy);

				SquaredMap.activeMap.highlight(tile);


			} catch (OutOfWorldException owe){
				Console.WriteLine(owe);
			}

		}

		protected override void OnMouseUp(OpenTK.Input.MouseButtonEventArgs e)
		{

		}

		protected override void OnMouseWheel(OpenTK.Input.MouseWheelEventArgs e)
		{

		}

		protected override void OnKeyPress(KeyPressEventArgs e)
		{
		}

		protected override void OnKeyDown(OpenTK.Input.KeyboardKeyEventArgs e)
		{
			switch (e.Key){
				case OpenTK.Input.Key.Up:
					rotateUpDown(-MathHelper.Pi / 180.0f);
					break;
				case OpenTK.Input.Key.Down:
                    rotateUpDown(MathHelper.Pi / 180.0f);
					break;
				case OpenTK.Input.Key.Left:
					rotateLeftRight(MathHelper.Pi / 90.0f);
					break;
				case OpenTK.Input.Key.Right:
					rotateLeftRight(-MathHelper.Pi / 90.0f);
					break;
				case OpenTK.Input.Key.W:
					walk(e.Shift ? 50.0f : 5.0f);
					break;
				case OpenTK.Input.Key.S:
					walk(e.Shift ? -50.0f : -5.0f);
					break;
				case OpenTK.Input.Key.A:
					strafe(e.Shift ? 50.0f : 5.0f);
					break;
				case OpenTK.Input.Key.D:
					strafe(e.Shift ? -50.0f : -5.0f);
					break;

				case OpenTK.Input.Key.Space:
					//fireBallistic();
					break;

				case OpenTK.Input.Key.Number1:
					lookAt = new Vector3(0,0,SquaredMap.maxHeight);
					arcLeftRight = 0;
					arcUpDown = MathHelper.PiOver2;
					setupCamera();
					break;
				case OpenTK.Input.Key.Number2:
					lookAt = new Vector3(0,0,SquaredMap.maxHeight);
					arcLeftRight = MathHelper.PiOver2;
					arcUpDown = MathHelper.PiOver2;
					setupCamera();
					break;
				case OpenTK.Input.Key.Number3:
					lookAt = new Vector3(0,0,SquaredMap.maxHeight);
					sceneCamera.View = new Vector3(1,1,-1);
					sceneCamera.Top = new Vector3(0,0,1);
					break;

			}	
		}

		private void fireBallistic(){
			Console.WriteLine("Fire Ballistic...");
			BallisticActor ba = new BallisticActor(0);
			ba.fire();

			ba.Position = BootStrap.instance().SquaredMap.ground(new Vector2(10,10));
			ba.Velocity = new Vector3(0,1,1);// + (Matrix4.CreateRotationZ(arcLeftRight) * Vector4.UnitY).Xyz;
			ba.Velocity.Normalize();
			ba.Velocity *= 50;
		}
*/
	}
}