forked from mirror/openmw-tes3mp
135 lines
3.1 KiB
C++
135 lines
3.1 KiB
C++
#include "loadland.hpp"
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namespace ESM
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{
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void Land::load(ESMReader &esm)
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{
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// Get the grid location
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esm.getSubNameIs("INTV");
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esm.getSubHeaderIs(8);
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esm.getT<int>(X);
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esm.getT<int>(Y);
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esm.getHNT(flags, "DATA");
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// Store the file position
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context = esm.getContext();
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hasData = false;
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int cnt = 0;
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// Skip these here. Load the actual data when the cell is loaded.
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if (esm.isNextSub("VNML"))
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{
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esm.skipHSubSize(12675);
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cnt++;
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}
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if (esm.isNextSub("VHGT"))
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{
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esm.skipHSubSize(4232);
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cnt++;
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}
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if (esm.isNextSub("WNAM"))
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{
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esm.skipHSubSize(81);
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}
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if (esm.isNextSub("VCLR"))
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{
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esm.skipHSubSize(12675);
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}
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if (esm.isNextSub("VTEX"))
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{
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esm.skipHSubSize(512);
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cnt++;
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}
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// We need all three of VNML, VHGT and VTEX in order to use the
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// landscape.
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hasData = (cnt == 3);
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dataLoaded = false;
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landData = NULL;
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}
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void Land::loadData(ESMReader &esm)
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{
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if (dataLoaded)
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{
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return;
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}
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landData = new LandData;
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if (hasData)
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{
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esm.restoreContext(context);
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//esm.getHNExact(landData->normals, sizeof(VNML), "VNML");
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if (esm.isNextSub("VNML"))
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{
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esm.skipHSubSize(12675);
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}
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VHGT rawHeights;
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esm.getHNExact(&rawHeights, sizeof(VHGT), "VHGT");
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int currentHeightOffset = rawHeights.heightOffset;
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for (int y = 0; y < LAND_SIZE; y++)
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{
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currentHeightOffset += rawHeights.heightData[y * LAND_SIZE];
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landData->heights[y * LAND_SIZE] = currentHeightOffset * HEIGHT_SCALE;
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int tempOffset = currentHeightOffset;
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for (int x = 1; x < LAND_SIZE; x++)
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{
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tempOffset += rawHeights.heightData[y * LAND_SIZE + x];
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landData->heights[x + y * LAND_SIZE] = tempOffset * HEIGHT_SCALE;
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}
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}
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if (esm.isNextSub("WNAM"))
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{
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esm.skipHSubSize(81);
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}
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if (esm.isNextSub("VCLR"))
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{
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landData->usingColours = true;
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esm.getHExact(&landData->colours, 3*LAND_NUM_VERTS);
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}else{
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landData->usingColours = false;
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}
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//TODO fix magic numbers
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uint16_t vtex[512];
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esm.getHNExact(&vtex, 512, "VTEX");
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int readPos = 0; //bit ugly, but it works
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for ( int y1 = 0; y1 < 4; y1++ )
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for ( int x1 = 0; x1 < 4; x1++ )
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for ( int y2 = 0; y2 < 4; y2++)
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for ( int x2 = 0; x2 < 4; x2++ )
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landData->textures[(y1*4+y2)*16+(x1*4+x2)] = vtex[readPos++];
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}
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else
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{
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landData->usingColours = false;
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memset(&landData->textures, 0, 512 * sizeof(uint16_t));
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for (int i = 0; i < LAND_NUM_VERTS; i++)
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{
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landData->heights[i] = -256.0f * HEIGHT_SCALE;
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}
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}
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dataLoaded = true;
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}
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void Land::unloadData()
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{
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if (dataLoaded)
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{
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delete landData;
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landData = NULL;
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dataLoaded = false;
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}
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}
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}
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