//---------------------------------------------------------------------------------------------------------------------------------------------------
// <copyright file="Landscape.cs" company="DarkWynter Studios">
//     Copyright (C)2007 DarkWynter Studios.  All rights reserved.
// </copyright>
//---------------------------------------------------------------------------------------------------------------------------------------------------
// {Contact : darkwynter.com for licensing information
//---------------------------------------------------------------------------------------------------------------------------------------------------

namespace DarkWynter.Game.GameObjects
{

    #region Using Statements
    using System;
    using System.Collections.Generic;
    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.Storage;
    using System.Xml;
    #endregion

    using DarkWynter.Engine.Globals;
    using DarkWynter.Engine.Physics;
    using DarkWynter.Engine.ObjectLib;
    using DarkWynter.Engine.GameObjects;
    using DarkWynter.Engine.Init;
    using DarkWynter.Stream;


    public class Landscape : GameObject
    {

        List<Billboard> billboards;
        Texture2D locationMap;

        float _recenteringThreshold = 1000;
        public float recenteringThreshold
        {
            get { return _recenteringThreshold; }
            set { _recenteringThreshold = value; }
        }

        /// <summary>
        /// Portal constructor
        /// </summary>
        public Landscape(Load gameObjectLoader)
            : base(gameObjectLoader)
        {

        }

        public override bool Load(ObjectLibrary objectLibrary)
        {
            //return base.Load(objectLibrary);

            // Load Location Map
            locationMap = Statics_Engine.SystemSettings.content.Load<Texture2D>("Content/_textures/FireRed");
            
            // Load Textures for Billboards
            draw.textureList.Add(Statics_Engine.SystemSettings.content.Load<Texture2D>("Content/_textures/FireRed"));

            // Create billboards based on player posiiton
            billboards = new List<Billboard>();

            // for( each pixel in locationMap)
            {
                // Get pixel position from locationmap and scale to world position
                Vector3 position = new Vector3(0);
                Billboard billboard = new Billboard(null);
                billboard.Load(position, new Vector3(0), 600.0f, 800.0f, draw.textureList[0]);
            }

            return true;
        }

        /// <summary>
        /// Clip to Player position if distance between Player and center of Landscape exceeds threshold.
        /// </summary>
        /// <param name="objectLibrary"></param>
        public override void Update(ref ObjectLibrary objectLibrary)
        {
            // No physics required..
            base.Update(ref objectLibrary);

            // Recenter if distance between Player and center of Landscape exceeds threshold
            Vector3 distance = DarkWynter.Engine.DarkWynterEngine.objectLibrary.humans[0].mass.currentPosition - this.mass.currentPosition;
            if(distance.Length() > recenteringThreshold)
            {
                this.mass.currentPosition = DarkWynter.Engine.DarkWynterEngine.objectLibrary.humans[0].mass.currentPosition;

                for (int i = 0; i < billboards.Count; i++)
                {
                    // NOTE: Add random offset to new position to eliminate repetative pattern
                    billboards[i].Position = billboards[i].Position + distance; 
                }
            }
        }

        public override void Draw_Billboards(ObjectLibrary objectLibrary, BillboardList gameObjectBillboards)
        {
            // draw all billboard in list 
            for (int i = 0; i < billboards.Count; i++)
            {
                gameObjectBillboards.Add(billboards[i] as IBillboard);
            }
        }

    }
}