private void ReadNodes(InternalBspLump lump, BinaryReader reader)
{
reader.BaseStream.Seek(lump.offset, SeekOrigin.Begin);
nodes = new InternalBspNode[lump.size / Marshal.SizeOf(typeof(InternalBspNode))];
for (int i = 0; i < nodes.Length; i++)
{
nodes[i] = new InternalBspNode();
nodes[i].plane = reader.ReadInt32();
nodes[i].front = reader.ReadInt32();
nodes[i].back = reader.ReadInt32();
nodes[i].bbox = new int[6];
for (int j = 0; j < nodes[i].bbox.Length; j++)
{
nodes[i].bbox[j] = reader.ReadInt32();
}
TransformBoundingBox(nodes[i].bbox);
}
}
private void ReadNodes( InternalBspLump lump, BinaryReader reader )
{
reader.BaseStream.Seek( lump.offset, SeekOrigin.Begin );
for ( int i = 0; i < nodes.Length; i++ )
{
nodes[ i ] = new InternalBspNode();
nodes[ i ].plane = reader.ReadInt32();
nodes[ i ].front = reader.ReadInt32();
nodes[ i ].back = reader.ReadInt32();
nodes[ i ].bbox = new int[ 6 ];
for ( int j = 0; j < nodes[ i ].bbox.Length; j++ )
nodes[ i ].bbox[ j ] = reader.ReadInt32();
TransformBoundingBox( nodes[ i ].bbox );
}
}
private void CreateNodes(Quake3Level q3lvl)
{
// Allocate memory for all nodes (leaves and splitters)
nodes = new BspNode[q3lvl.NumNodes + q3lvl.NumLeaves];
numLeaves = q3lvl.NumLeaves;
leafStart = q3lvl.NumNodes;
// Run through and initialize the array so front/back node pointers
// aren't null.
for (int i = 0; i < nodes.Length; i++)
{
nodes[i] = new BspNode();
}
// Convert nodes
// In our array, first q3lvl.NumNodes are non-leaf, others are leaves
for (int i = 0; i < q3lvl.NumNodes; i++)
{
BspNode node = nodes[i];
InternalBspNode q3node = q3lvl.Nodes[i];
node.IsLeaf = false;
node.Owner = this;
Plane splitPlane = new Plane();
// Set plane
splitPlane.Normal = new Vector3(
q3lvl.Planes[q3node.plane].normal[0],
q3lvl.Planes[q3node.plane].normal[1],
q3lvl.Planes[q3node.plane].normal[2]
);
splitPlane.D = -q3lvl.Planes[q3node.plane].distance;
node.SplittingPlane = splitPlane;
// Set bounding box
node.BoundingBox = new AxisAlignedBox(
new Vector3(
q3node.bbox[0],
q3node.bbox[1],
q3node.bbox[2]
),
new Vector3(
q3node.bbox[3],
q3node.bbox[4],
q3node.bbox[5]
)
);
// Set back pointer
// Negative indexes in Quake3 mean leaves.
if (q3node.back < 0)
{
node.BackNode = nodes[leafStart + (~(q3node.back))];
}
else
{
node.BackNode = nodes[q3node.back];
}
// Set front pointer
// Negative indexes in Quake3 mean leaves
if (q3node.front < 0)
{
node.FrontNode = nodes[leafStart + (~(q3node.front))];
}
else
{
node.FrontNode = nodes[q3node.front];
}
}
}