/*
 * Copyright (C) 2005-2012 MaNGOS <http://getmangos.com/>
 *
 * 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
 */

#ifndef _MAP_BUILDER_H
#define _MAP_BUILDER_H

#include <vector>
#include <set>
#include <map>

#include "TerrainBuilder.h"
#include "IntermediateValues.h"

#include "IVMapManager.h"
#include "WorldModel.h"

#include "Recast.h"
#include "DetourNavMesh.h"

using namespace std;
using namespace VMAP;
// G3D namespace typedefs conflicts with ACE typedefs

namespace MMAP
{
    typedef map<uint32,set<uint32>*> TileList;
    struct Tile
    {
        Tile() : chf(NULL), solid(NULL), cset(NULL), pmesh(NULL), dmesh(NULL) {}
        ~Tile()
        {
            rcFreeCompactHeightfield(chf);
            rcFreeContourSet(cset);
            rcFreeHeightField(solid);
            rcFreePolyMesh(pmesh);
            rcFreePolyMeshDetail(dmesh);
        }
        rcCompactHeightfield* chf;
        rcHeightfield* solid;
        rcContourSet* cset;
        rcPolyMesh* pmesh;
        rcPolyMeshDetail* dmesh;
    };

    class MapBuilder
    {
        public:
            MapBuilder(float maxWalkableAngle   = 60.f,
                       bool skipLiquid          = false,
                       bool skipContinents      = false,
                       bool skipJunkMaps        = true,
                       bool skipBattlegrounds   = false,
                       bool debugOutput         = false,
                       bool bigBaseUnit         = false,
                       const char* offMeshFilePath = NULL);

            ~MapBuilder();

            // builds all mmap tiles for the specified map id (ignores skip settings)
            void buildMap(uint32 mapID);

            // builds an mmap tile for the specified map and its mesh
            void buildSingleTile(uint32 mapID, uint32 tileX, uint32 tileY);

            // builds list of maps, then builds all of mmap tiles (based on the skip settings)
            void buildAllMaps();

        private:
            // detect maps and tiles
            void discoverTiles();
            set<uint32>* getTileList(uint32 mapID);

            void buildNavMesh(uint32 mapID, dtNavMesh* &navMesh);

            void buildTile(uint32 mapID, uint32 tileX, uint32 tileY, dtNavMesh* navMesh);

            // move map building
            void buildMoveMapTile(uint32 mapID,
                                  uint32 tileX,
                                  uint32 tileY,
                                  MeshData &meshData,
                                  float bmin[3],
                                  float bmax[3],
                                  dtNavMesh* navMesh);

            void getTileBounds(uint32 tileX, uint32 tileY,
                               float* verts, int vertCount,
                               float* bmin, float* bmax);
            void getGridBounds(uint32 mapID, uint32 &minX, uint32 &minY, uint32 &maxX, uint32 &maxY);

            bool shouldSkipMap(uint32 mapID);
            bool isTransportMap(uint32 mapID);
            bool shouldSkipTile(uint32 mapID, uint32 tileX, uint32 tileY);

            TerrainBuilder* m_terrainBuilder;
            TileList m_tiles;

            bool m_debugOutput;

            const char* m_offMeshFilePath;
            bool m_skipContinents;
            bool m_skipJunkMaps;
            bool m_skipBattlegrounds;

            float m_maxWalkableAngle;
            bool m_bigBaseUnit;

            // build performance - not really used for now
            rcContext* m_rcContext;
    };
}

#endif