TerrainBuilder.h

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/*
* This file is part of Project SkyFire https://www.projectskyfire.org. 
* See LICENSE.md file for Copyright information
*/
 
#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