//-----------------------------------------------------------------
//  Copyright 2014 Justin Lueders and Fervent Interactive
//  All rights reserved
//-----------------------------------------------------------------

using System;
using FI.Framework.IoCFramework.Attributes;
using FI.Framework.Messaging.Messages;
using FI.Interfaces.Grout;
using UnityEngine;
namespace FI.Grout
{
    public class CustomPerlinDataLoader:ITerrainDataLoader
    {
        /*None = 0, Rock = 1, Forest = 2, Marsh = 3, Sand = 4, Water = 5 , Paver = 6*/

        [Dependency]
        public ITerrainParameterProvider TerrainParameterProvider { get; set; }

        private Vector2 _shift;
        private float _zoom;
        private Func<float, int> PerlinValueConversionFunc;

        public CustomPerlinDataLoader()
        {
            PerlinDataLoaderConfigMessage.Register(this, PerlinDataLoaderSettingsMessageHandler);
        }

        private void PerlinDataLoaderSettingsMessageHandler(PerlinDataLoaderConfigMessage obj)
        {
            _shift = obj.Shift;
            _zoom = obj.Zoom;

            PerlinValueConversionFunc = obj.PerlinValueConversionFunc;
        }


        public int[] LoadTerrainData(int chunkX, int chunkY, int chunkLayer)
        {
            var mapSize = TerrainParameterProvider.TerrainChunkSize;
            var map = new int[mapSize * mapSize];

            var xoff = chunkX*mapSize;
            var yoff = chunkY*mapSize;

            var xCounter = 0;
            var yCounter = 0;

            for (var y = yoff; y < yoff + mapSize; y++)
            {
                for (var x = xoff; x < xoff + mapSize; x++)
                {
                    var pos = _zoom*(new Vector2(x, y)) + _shift;
                    //NewPerlin2 perlin2 = new NewPerlin2();
                    float noise = 0.2f;
                    //Debug.Log(perlin2.newNoise(pos.x,pos.y, 3));
                    if (PerlinValueConversionFunc == null)
                    {
                        Debug.LogError("No conversion function given to the perlin data loader.");
                        continue;
                    }
                    var val = PerlinValueConversionFunc(noise);
                    map[(yCounter*mapSize) + xCounter] = val;
                    xCounter++;
                }
                yCounter++;
                xCounter = 0;
            }

            return map;
        }
    }
}