void Land::loadData(int flags) const
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(mMutex);
// Try to load only available data
flags = flags & mDataTypes;
// Return if all required data is loaded
if ((mDataLoaded & flags) == flags) {
return;
}
// Create storage if nothing is loaded
if (mLandData == NULL) {
mLandData = new LandData;
mLandData->mDataTypes = mDataTypes;
}
ESM::ESMReader reader;
reader.restoreContext(mContext);
if (reader.isNextSub("VNML")) {
condLoad(reader, flags, DATA_VNML, mLandData->mNormals, sizeof(mLandData->mNormals));
}
if (reader.isNextSub("VHGT")) {
static VHGT vhgt;
if (condLoad(reader, flags, DATA_VHGT, &vhgt, sizeof(vhgt))) {
float rowOffset = vhgt.mHeightOffset;
for (int y = 0; y < LAND_SIZE; y++) {
rowOffset += vhgt.mHeightData[y * LAND_SIZE];
mLandData->mHeights[y * LAND_SIZE] = rowOffset * HEIGHT_SCALE;
float colOffset = rowOffset;
for (int x = 1; x < LAND_SIZE; x++) {
colOffset += vhgt.mHeightData[y * LAND_SIZE + x];
mLandData->mHeights[x + y * LAND_SIZE] = colOffset * HEIGHT_SCALE;
}
}
mLandData->mUnk1 = vhgt.mUnk1;
mLandData->mUnk2 = vhgt.mUnk2;
}
}
if (reader.isNextSub("WNAM")) {
condLoad(reader, flags, DATA_WNAM, mLandData->mWnam, 81);
}
if (reader.isNextSub("VCLR"))
condLoad(reader, flags, DATA_VCLR, mLandData->mColours, 3 * LAND_NUM_VERTS);
if (reader.isNextSub("VTEX")) {
static uint16_t vtex[LAND_NUM_TEXTURES];
if (condLoad(reader, flags, DATA_VTEX, vtex, sizeof(vtex))) {
LandData::transposeTextureData(vtex, mLandData->mTextures);
}
}
}
