GridMap.h

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * 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 TRINITY_GRID_MAP_H
#define TRINITY_GRID_MAP_H
 
#include "Define.h"
#include "MapDefines.h"
#include "Optional.h"
#include <cstdio>
 
struct LiquidData;
enum ZLiquidStatus : uint32;
namespace G3D { class Plane; }
 
class TC_GAME_API GridMap
{
 uint32 _flags;
 union
 {
 float* m_V9;
 uint16* m_uint16_V9;
 uint8* m_uint8_V9;
 };
 union
 {
 float* m_V8;
 uint16* m_uint16_V8;
 uint8* m_uint8_V8;
 };
 G3D::Plane* _minHeightPlanes;
 // Height level data
 float _gridHeight;
 float _gridIntHeightMultiplier;
 
 // Area data
 uint16* _areaMap;
 
 // Liquid data
 float _liquidLevel;
 uint16* _liquidEntry;
 map_liquidHeaderTypeFlags* _liquidFlags;
 float* _liquidMap;
 uint16 _gridArea;
 uint16 _liquidGlobalEntry;
 map_liquidHeaderTypeFlags _liquidGlobalFlags;
 uint8 _liquidOffX;
 uint8 _liquidOffY;
 uint8 _liquidWidth;
 uint8 _liquidHeight;
 
 uint8* _holes;
 
 bool loadAreaData(FILE* in, uint32 offset, uint32 size);
 bool loadHeightData(FILE* in, uint32 offset, uint32 size);
 bool loadLiquidData(FILE* in, uint32 offset, uint32 size);
 bool loadHolesData(FILE* in, uint32 offset, uint32 size);
 bool isHole(int row, int col) const;
 
 // Get height functions and pointers
 typedef float (GridMap::* GetHeightPtr) (float x, float y) const;
 GetHeightPtr _gridGetHeight;
 float getHeightFromFloat(float x, float y) const;
 float getHeightFromUint16(float x, float y) const;
 float getHeightFromUint8(float x, float y) const;
 float getHeightFromFlat(float x, float y) const;
 
public:
 GridMap();
 ~GridMap();
 
 enum class LoadResult
 {
 Ok,
 FileDoesNotExist,
 InvalidFile
 };
 
 LoadResult loadData(char const* filename);
 void unloadData();
 
 uint16 getArea(float x, float y) const;
 float getHeight(float x, float y) const { return (this->*_gridGetHeight)(x, y); }
 float getMinHeight(float x, float y) const;
 float getLiquidLevel(float x, float y) const;
 ZLiquidStatus GetLiquidStatus(float x, float y, float z, Optional<map_liquidHeaderTypeFlags> ReqLiquidType, LiquidData* data = nullptr, float collisionHeight = 2.03128f) const; // DEFAULT_COLLISION_HEIGHT in Object.h
};
 
#endif // TRINITY_GRID_MAP_H