MapBuilder.h

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/*
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2011 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef _MAP_BUILDER_H
#define _MAP_BUILDER_H

#include <vector>
#include <set>
#include <map>
#include <list>
#include <atomic>
#include <thread>

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

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

using namespace VMAP;

namespace MMAP
{
 struct MapTiles
 {
 MapTiles() : m_mapId(uint32(-1)), m_tiles(NULL) {}

 MapTiles(uint32 id, std::set<uint32>* tiles) : m_mapId(id), m_tiles(tiles) {}
 ~MapTiles() {}

 uint32 m_mapId;
 std::set<uint32>* m_tiles;

 bool operator==(uint32 id)
 {
 return m_mapId == id;
 }
 };

 typedef std::list<MapTiles> 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 = 70.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);
 void buildMeshFromFile(char* name);

 // 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(int threads);

 void WorkerThread();

 private:
 // detect maps and tiles
 void discoverTiles();
 std::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;

 std::vector<std::thread> _workerThreads;
 ProducerConsumerQueue<uint32> _queue;
 std::atomic<bool> _cancelationToken;
 };
}

#endif