/*
 * ParticleReader.cs
 * Authors: Brian Murphy
 * Copyright (c) 2007-2008 Cornell University

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/


using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
using TACParticleEngine.Emitters;
using TACParticleEngine.FileProcessing;

namespace TACParticleEngine.Particles
{
    /// <summary>
    /// Reads & process Particle Engines
    /// </summary>
    public class ParticleReader : ContentTypeReader<ParticleEngine>
    {
        /// <summary>
        /// Content Reader for particle engine files
        /// </summary>
        /// <param name="input">File to read from</param>
        /// <param name="existingInstance">An instance of desired return type so that Read is recognized 
        /// by the XNA content pipeline</param>
        /// <returns>A new particle engine filled with emitters made from the read in data</returns>
        protected override ParticleEngine Read(ContentReader input, ParticleEngine existingInstance)
        {
            List<EmitterInfo> emitterInfoList = input.ReadObject<List<EmitterInfo>>();
            List<Emitter> emitters = new List<Emitter>();

            foreach (EmitterInfo info in emitterInfoList)
            {
                //SpriteResourceManager.getSingleton.load(info.TextureName);
				if (info.MinVel.Equals(Vector3.Zero) && info.MaxVel.Equals(Vector3.Zero))
				{
					if (info.Positions.Count > 1)
					{
						emitters.Add(new SplineEmitter(info.Positions,
                            info.BlendEffect, info.TextureName, info.ParticlePersSec, info.ParticleAmount,
							info.EmitLifetime, info.ParticleLifetime, info.MinStartSize, info.MaxStartSize, 
							info.MinEndSize, info.MaxEndSize, info.MinStartSpeed, info.MaxStartSpeed, info.MinEndSpeed, 
							info.MaxEndSpeed, info.MinStartColor, info.MaxStartColor, info.MinEndColor, info.MaxEndColor));
					}
					else if (info.Positions.Count == 1)
					{
						emitters.Add(new PointEmitter(info.Positions[0],
                            info.BlendEffect, info.TextureName, info.ParticlePersSec, info.ParticleAmount,
							info.EmitLifetime, info.ParticleLifetime, info.MinStartSize, info.MaxStartSize, 
							info.MinEndSize, info.MaxEndSize, info.MinStartSpeed, info.MaxStartSpeed, info.MinEndSpeed, 
							info.MaxEndSpeed, info.MinStartColor, info.MaxStartColor, info.MinEndColor, info.MaxEndColor));
					}
					else
					{
						continue;
					}
				}
				else
				{
					if (info.Positions.Count == 1)
					{
						if (info.MinVel.X < -1 || info.MinVel.Y < -1 || info.MinVel.Z < -1 ||
							info.MinVel.X > 1 || info.MinVel.Y > 1 || info.MinVel.Z > 1 ||
							info.MaxVel.X < -1 || info.MaxVel.Y < -1 || info.MaxVel.Z < -1 ||
							info.MaxVel.X > 1 || info.MaxVel.Y > 1 || info.MaxVel.Z > 1)
						{
							emitters.Add(new SprayEmitter(info.Positions[0], info.MinVel, info.MaxVel,
                                info.BlendEffect, info.TextureName, info.ParticlePersSec, info.ParticleAmount,
								info.EmitLifetime, info.ParticleLifetime, info.MinStartSize, info.MaxStartSize, 
								info.MinEndSize, info.MaxEndSize, info.MinStartSpeed, info.MaxStartSpeed, 
								info.MinEndSpeed, info.MaxEndSpeed, info.MinStartColor, info.MaxStartColor,
								info.MinEndColor, info.MaxEndColor));
						}
						else
						{
							emitters.Add(new DirectionalEmitter(info.Positions[0], info.MinVel, info.MaxVel,
                                info.BlendEffect, info.TextureName, info.ParticlePersSec, info.ParticleAmount,
								info.EmitLifetime, info.ParticleLifetime, info.MinStartSize, info.MaxStartSize, 
								info.MinEndSize, info.MaxEndSize, info.MinStartSpeed, info.MaxStartSpeed, info.MinEndSpeed, 
								info.MaxEndSpeed, info.MinStartColor, info.MaxStartColor, info.MinEndColor, info.MaxEndColor));
						}
					}
					else
					{
						continue;
					}
				}
            }
            return new ParticleEngine(emitters);
        }

    }
}