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131 lines
2.8 KiB
C++
131 lines
2.8 KiB
C++
#ifndef OPENMW_ESM_LAND_H
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#define OPENMW_ESM_LAND_H
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#include <stdint.h>
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#include "esmcommon.hpp"
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namespace ESM
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{
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class ESMReader;
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class ESMWriter;
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/*
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* Landscape data.
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*/
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struct Land
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{
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static unsigned int sRecordId;
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Land();
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~Land();
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int mFlags; // Only first four bits seem to be used, don't know what
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// they mean.
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int mX, mY; // Map coordinates.
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int mPlugin; // Plugin index, used to reference the correct material palette.
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// File context. This allows the ESM reader to be 'reset' to this
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// location later when we are ready to load the full data set.
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ESMReader* mEsm;
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ESM_Context mContext;
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bool mHasData;
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int mDataTypes;
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int mDataLoaded;
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enum
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{
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DATA_VNML = 1,
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DATA_VHGT = 2,
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DATA_WNAM = 4,
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DATA_VCLR = 8,
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DATA_VTEX = 16
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};
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// number of vertices per side
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static const int LAND_SIZE = 65;
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// cell terrain size in world coords
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static const int REAL_SIZE = 8192;
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// total number of vertices
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static const int LAND_NUM_VERTS = LAND_SIZE * LAND_SIZE;
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static const int HEIGHT_SCALE = 8;
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//number of textures per side of land
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static const int LAND_TEXTURE_SIZE = 16;
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//total number of textures per land
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static const int LAND_NUM_TEXTURES = LAND_TEXTURE_SIZE * LAND_TEXTURE_SIZE;
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#pragma pack(push,1)
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struct VHGT
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{
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float mHeightOffset;
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int8_t mHeightData[LAND_NUM_VERTS];
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short mUnk1;
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char mUnk2;
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};
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#pragma pack(pop)
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typedef signed char VNML;
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struct LandData
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{
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float mHeightOffset;
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float mHeights[LAND_NUM_VERTS];
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VNML mNormals[LAND_NUM_VERTS * 3];
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uint16_t mTextures[LAND_NUM_TEXTURES];
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bool mUsingColours;
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char mColours[3 * LAND_NUM_VERTS];
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int mDataTypes;
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uint8_t mWnam[81];
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short mUnk1;
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uint8_t mUnk2;
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void save(ESMWriter &esm);
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static void transposeTextureData(uint16_t *in, uint16_t *out);
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};
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LandData *mLandData;
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void load(ESMReader &esm);
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void save(ESMWriter &esm) const;
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void blank() {}
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/**
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* Actually loads data
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*/
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void loadData(int flags);
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/**
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* Frees memory allocated for land data
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*/
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void unloadData();
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/// Check if given data type is loaded
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/// \todo reimplement this
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bool isDataLoaded(int flags) {
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return (mDataLoaded & flags) == flags;
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}
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private:
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Land(const Land& land);
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Land& operator=(const Land& land);
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/// Loads data and marks it as loaded
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/// \return true if data is actually loaded from file, false otherwise
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/// including the case when data is already loaded
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bool condLoad(int flags, int dataFlag, void *ptr, unsigned int size);
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};
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}
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#endif
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