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private unsafe int writeChunk(XTDTerrainChunk chunk, BinaryWriter mem)
{
mem.Write(Xbox_EndianSwap.endSwapI32(chunk.gridLocX));
mem.Write(Xbox_EndianSwap.endSwapI32(chunk.gridLocZ));
mem.Write(Xbox_EndianSwap.endSwapI32(chunk.maxVertStride));
mem.Write(Xbox_EndianSwap.endSwapF32(chunk.mMin.X));
mem.Write(Xbox_EndianSwap.endSwapF32(chunk.mMin.Y));
mem.Write(Xbox_EndianSwap.endSwapF32(chunk.mMin.Z));
mem.Write(Xbox_EndianSwap.endSwapF32(chunk.mMax.X));
mem.Write(Xbox_EndianSwap.endSwapF32(chunk.mMax.Y));
mem.Write(Xbox_EndianSwap.endSwapF32(chunk.mMax.Z));
bool canCastShadows = true;
if (chunk.mMax.Y - chunk.mMin.Y < 2)
{
canCastShadows = false;
}
mem.Write(canCastShadows);
return(0);
}
private void generateGridChunks(ref XTDVisualHeader header)
{
//Create and write our flat terrain quadnode chunks
BTerrainQuadNode[] mLeafNodes = TerrainGlobals.getTerrain().getQuadNodeLeafArray();
for (int i = 0; i < mLeafNodes.Length; i++)
{
int width = (int)BTerrainQuadNode.getMaxNodeWidth();
ECF.ECFChunkHolder chunkHolder = new ECF.ECFChunkHolder();
chunkHolder.mDataMemStream = new MemoryStream();
BinaryWriter binWriter = new BinaryWriter(chunkHolder.mDataMemStream);
XTDTerrainChunk gridNode = new XTDTerrainChunk();
int locX = mLeafNodes[i].getDesc().mMinXVert / width;
int locZ = mLeafNodes[i].getDesc().mMinZVert / width;
gridNode.gridLocX = locX;
gridNode.gridLocZ = locZ;
//calculate our chunk data
gridNode.heightmapOnly = false;
gridNode.maxVertStride = 64;
//lets get our verts, normals, and ambOcclu
int mnX = locX * width;
int mnZ = locZ * width;
BBoundingBox bb = new BBoundingBox();
bb.empty();
for (int z = 0; z < width + 1; z++)
{
for (int x = 0; x < width + 1; x++)
{
int xVal = (int)(mnX + x);
int zVal = (int)(mnZ + z);
Vector3 v = TerrainGlobals.getTerrain().getPos(xVal, zVal);
bb.addPoint(v);
}
}
gridNode.mMin = bb.min;
gridNode.mMax = bb.max;
//IF WE CONTAIN FOLIAGE! increase the size of our bounding boxes..
if (FoliageManager.isChunkUsed(mLeafNodes[i]))
{
BBoundingBox bbA = FoliageManager.giveMaxBBs();
gridNode.mMin += bbA.min;
gridNode.mMax += bbA.max;
}
//expand our box a tad
float scle = TerrainGlobals.getTerrain().getTileScale();
gridNode.mMin -= new Vector3(scle, scle, scle);
gridNode.mMax += new Vector3(scle, scle, scle);
//send the verts off to the compressor to be compressed properly into an image (using whatever technique)
//be sure to assign a corolary ID so we can reference it later.
writeChunk(gridNode, binWriter);
//add this chunk to our main data stream
ExportTo360.mECF.addChunk((int)eXTD_ChunkID.cXTD_TerrainChunk, chunkHolder, binWriter.BaseStream.Length);
binWriter.Close();
binWriter = null;
chunkHolder.Close();
chunkHolder = null;
}
mLeafNodes = null;
}