TerrainBuilder.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 _MMAP_TERRAIN_BUILDER_H
#define _MMAP_TERRAIN_BUILDER_H

#include "PathCommon.h"
#include "WorldModel.h"

#include "G3D/Array.h"
#include "G3D/Vector3.h"
#include "G3D/Matrix3.h"

namespace MMAP
{
 enum Spot
 {
 TOP = 1,
 RIGHT = 2,
 LEFT = 3,
 BOTTOM = 4,
 ENTIRE = 5
 };

 enum Grid
 {
 GRID_V8,
 GRID_V9
 };

 static const int V9_SIZE = 129;
 static const int V9_SIZE_SQ = V9_SIZE*V9_SIZE;
 static const int V8_SIZE = 128;
 static const int V8_SIZE_SQ = V8_SIZE*V8_SIZE;
 static const float GRID_SIZE = 533.3333f;
 static const float GRID_PART_SIZE = GRID_SIZE/V8_SIZE;

 // see contrib/extractor/system.cpp, CONF_use_minHeight
 static const float INVALID_MAP_LIQ_HEIGHT = -500.f;
 static const float INVALID_MAP_LIQ_HEIGHT_MAX = 5000.0f;

 // see following files:
 // contrib/extractor/system.cpp
 // src/game/Map.cpp

 struct MeshData
 {
 G3D::Array<float> solidVerts;
 G3D::Array<int> solidTris;

 G3D::Array<float> liquidVerts;
 G3D::Array<int> liquidTris;
 G3D::Array<uint8> liquidType;

 // offmesh connection data
 G3D::Array<float> offMeshConnections; // [p0y,p0z,p0x,p1y,p1z,p1x] - per connection
 G3D::Array<float> offMeshConnectionRads;
 G3D::Array<unsigned char> offMeshConnectionDirs;
 G3D::Array<unsigned char> offMeshConnectionsAreas;
 G3D::Array<unsigned short> offMeshConnectionsFlags;
 };

 class TerrainBuilder
 {
 public:
 TerrainBuilder(bool skipLiquid);
 ~TerrainBuilder();

 void loadMap(uint32 mapID, uint32 tileX, uint32 tileY, MeshData &meshData);
 bool loadVMap(uint32 mapID, uint32 tileX, uint32 tileY, MeshData &meshData);
 void loadOffMeshConnections(uint32 mapID, uint32 tileX, uint32 tileY, MeshData &meshData, const char* offMeshFilePath);

 bool usesLiquids() { return !m_skipLiquid; }

 // vert and triangle methods
 static void transform(std::vector<G3D::Vector3> &original, std::vector<G3D::Vector3> &transformed,
 float scale, G3D::Matrix3 &rotation, G3D::Vector3 &position);
 static void copyVertices(std::vector<G3D::Vector3> &source, G3D::Array<float> &dest);
 static void copyIndices(std::vector<VMAP::MeshTriangle> &source, G3D::Array<int> &dest, int offest, bool flip);
 static void copyIndices(G3D::Array<int> &src, G3D::Array<int> &dest, int offset);
 static void cleanVertices(G3D::Array<float> &verts, G3D::Array<int> &tris);
 private:
 bool loadMap(uint32 mapID, uint32 tileX, uint32 tileY, MeshData &meshData, Spot portion);

 void getLoopVars(Spot portion, int &loopStart, int &loopEnd, int &loopInc);

 bool m_skipLiquid;

 bool loadHeightMap(uint32 mapID, uint32 tileX, uint32 tileY, G3D::Array<float> &vertices, G3D::Array<int> &triangles, Spot portion);

 void getHeightCoord(int index, Grid grid, float xOffset, float yOffset, float* coord, float* v);

 void getHeightTriangle(int square, Spot triangle, int* indices, bool liquid = false);

 bool isHole(int square, uint8 const holes[16][16][8]);

 void getLiquidCoord(int index, int index2, float xOffset, float yOffset, float* coord, float* v);

 uint8 getLiquidType(int square, const uint8 liquid_type[16][16]);

 // hide parameterless and copy constructor
 TerrainBuilder();
 TerrainBuilder(const TerrainBuilder &tb);
 };
}

#endif