/// <summary>
/// Creates a CollisionModel bsp from a Scenario StructureBsp.
/// This does not work for sbsps with > 65536 planes, which use a
/// larger encoding for their bsp related structs differing from the
/// struct used in common with collision model bsps.
/// </summary>
/// <returns></returns>
public static BSP fromSbsp(ScenarioStructureBsp sbsp, OpenTagCache info)
{
// Need to work out how to do that class attribute enumeration thing
// so all of this folds down to < 10 lines
BSP bsp = fromSbspInit(sbsp);
var resource = sbsp.Resource3;
var resourceManager = new ResourceDataManager();
try
{
resourceManager.LoadCachesFromDirectory(info.CacheFile.DirectoryName);
}
catch
{
Console.WriteLine("Unable to load the resource .dat files.");
Console.WriteLine("Make sure that they all exist and are valid.");
}
//Create a binary reader for the resource
Stream stream = new MemoryStream();
resourceManager.Extract(sbsp.Resource3, stream);
BinaryReader reader = new BinaryReader(stream);
reader.BaseStream.Position = 0;
Console.WriteLine("Stream position: {0:X8}", reader.BaseStream.Position);
for (int i = 0; i < bsp.Bsp3dNodes.Count; ++i)
{
BSP.Bsp3dNode node = new BSP.Bsp3dNode();
node.Plane = reader.ReadInt16();
node.BackChildLower = reader.ReadByte();
node.BackChildMid = reader.ReadByte();
node.BackChildUpper = reader.ReadByte();
node.FrontChildLower = reader.ReadByte();
node.FrontChildMid = reader.ReadByte();
node.FrontChildUpper = reader.ReadByte();
bsp.Bsp3dNodes[i] = node;
}
//Align to the next multiple of 16
reader.BaseStream.Position = -((-reader.BaseStream.Position) & ~0xf);
Console.WriteLine("Stream position: {0:X8}", reader.BaseStream.Position);
for (int i = 0; i < bsp.Planes.Count; ++i)
{
BSP.Plane plane = new BSP.Plane();
plane.PlaneI = reader.ReadSingle();
plane.PlaneJ = reader.ReadSingle();
plane.PlaneK = reader.ReadSingle();
plane.PlaneD = reader.ReadSingle();
bsp.Planes[i] = plane;
}
//Put here for consistency
reader.BaseStream.Position = -((-reader.BaseStream.Position) & ~0xf);
Console.WriteLine("Stream position: {0:X8}", reader.BaseStream.Position);
for (int i = 0; i < bsp.Leaves.Count; ++i)
{
BSP.Leaf leaf = new BSP.Leaf();
leaf.Flags = reader.ReadInt16();
leaf.Bsp2dReferenceCount = reader.ReadInt16();
leaf.Unknown = reader.ReadInt16();
leaf.FirstBsp2dReference = reader.ReadInt16();
bsp.Leaves[i] = leaf;
}
//Align to the next multiple of 16
reader.BaseStream.Position = -((-reader.BaseStream.Position) & ~0xf);
Console.WriteLine("Stream position: {0:X8}", reader.BaseStream.Position);
for (int i = 0; i < bsp.Bsp2dReferences.Count; ++i)
{
BSP.Bsp2dReference bsp2dref = new BSP.Bsp2dReference();
bsp2dref.Plane = reader.ReadInt16();
bsp2dref.Bsp2dNode = reader.ReadInt16();
bsp.Bsp2dReferences[i] = bsp2dref;
}
//Align to the next multiple of 16
reader.BaseStream.Position = -((-reader.BaseStream.Position) & ~0xf);
Console.WriteLine("Stream position: {0:X8}", reader.BaseStream.Position);
for (int i = 0; i < bsp.Bsp2dNodes.Count; ++i)
{
BSP.Bsp2dNode node = new BSP.Bsp2dNode();
node.PlaneI = reader.ReadSingle();
node.PlaneJ = reader.ReadSingle();
node.PlaneD = reader.ReadSingle();
node.LeftChild = reader.ReadInt16();
node.RightChild = reader.ReadInt16();
bsp.Bsp2dNodes[i] = node;
}
//Put here for consistency
reader.BaseStream.Position = -((-reader.BaseStream.Position) & ~0xf);
Console.WriteLine("Stream position: {0:X8}", reader.BaseStream.Position);
for (int i = 0; i < bsp.Surfaces.Count; ++i)
{
BSP.Surface surface = new BSP.Surface();
surface.Plane = reader.ReadUInt16();
surface.FirstEdge = reader.ReadUInt16();
surface.Material = reader.ReadInt16();
surface.Unknown = reader.ReadInt16();
surface.BreakableSurface = reader.ReadInt16();
surface.Unknown2 = reader.ReadInt16();
bsp.Surfaces[i] = surface;
}
//Align to the next multiple of 16
reader.BaseStream.Position = -((-reader.BaseStream.Position) & ~0xf);
Console.WriteLine("Stream position: {0:X8}", reader.BaseStream.Position);
for (int i = 0; i < bsp.Edges.Count; ++i)
{
BSP.Edge edge = new BSP.Edge();
edge.StartVertex = reader.ReadUInt16();
edge.EndVertex = reader.ReadUInt16();
edge.ForwardEdge = reader.ReadUInt16();
edge.ReverseEdge = reader.ReadUInt16();
edge.LeftSurface = reader.ReadUInt16();
edge.RightSurface = reader.ReadUInt16();
bsp.Edges[i] = edge;
}
//Align to the next multiple of 16
reader.BaseStream.Position = -((-reader.BaseStream.Position) & ~0xf);
Console.WriteLine("Stream position: {0:X8}", reader.BaseStream.Position);
for (int i = 0; i < bsp.Vertices.Count; ++i)
{
BSP.Vertex vert = new BSP.Vertex();
vert.PointX = reader.ReadSingle();
vert.PointY = reader.ReadSingle();
vert.PointZ = reader.ReadSingle();
vert.FirstEdge = reader.ReadInt16();
vert.Unknown = reader.ReadInt16();
bsp.Vertices[i] = vert;
}
return bsp;
}
/// <summary>
/// Initialises a BSP with the correct number of elements for each
/// of the eight lists.
/// </summary>
/// <param name="sbsp"></param>
/// <returns></returns>
private static BSP fromSbspInit(ScenarioStructureBsp sbsp)
{
BSP bsp = new BSP();
//Resource 3 of the sbsp tag has bsp data
var resource = sbsp.Resource3;
BinaryReader rsrcDef = new BinaryReader(new MemoryStream(resource.DefinitionData));
//The position in the resource definition for the number of bsp3dnodes
rsrcDef.BaseStream.Position = 0;
//set initial size (not capacity) to the number read from the reader
bsp.Bsp3dNodes = new List<BSP.Bsp3dNode>(new BSP.Bsp3dNode[rsrcDef.ReadInt32()]);
Console.WriteLine("{0} Bsp3dNodes", bsp.Bsp3dNodes.Count);
//Position for number of planes
rsrcDef.BaseStream.Position = 12;
bsp.Planes = new List<BSP.Plane>(new BSP.Plane[rsrcDef.ReadInt32()]);
Console.WriteLine("{0} Planes", bsp.Planes.Count);
//Position for number of leaves
rsrcDef.BaseStream.Position = 24;
bsp.Leaves = new List<BSP.Leaf>(new BSP.Leaf[rsrcDef.ReadInt32()]);
Console.WriteLine("{0} Leaves", bsp.Leaves.Count);
//Position for number of bsp2dreferences
rsrcDef.BaseStream.Position = 36;
bsp.Bsp2dReferences = new List<BSP.Bsp2dReference>(new BSP.Bsp2dReference[rsrcDef.ReadInt32()]);
Console.WriteLine("{0} Bsp2dReferences", bsp.Bsp2dReferences.Count);
//Position for number of bsp2dnodes
rsrcDef.BaseStream.Position = 48;
bsp.Bsp2dNodes = new List<BSP.Bsp2dNode>(new BSP.Bsp2dNode[rsrcDef.ReadInt32()]);
Console.WriteLine("{0} Bsp2dNodes", bsp.Bsp2dNodes.Count);
//Position for number of surfaces
rsrcDef.BaseStream.Position = 60;
bsp.Surfaces = new List<BSP.Surface>(new BSP.Surface[rsrcDef.ReadInt32()]);
Console.WriteLine("{0} Surfaces", bsp.Surfaces.Count);
//Position for number of edges
rsrcDef.BaseStream.Position = 72;
bsp.Edges = new List<BSP.Edge>(new BSP.Edge[rsrcDef.ReadInt32()]);
Console.WriteLine("{0} Edges", bsp.Edges.Count);
//Position for number of vertices
rsrcDef.BaseStream.Position = 84;
bsp.Vertices = new List<BSP.Vertex>(new BSP.Vertex[rsrcDef.ReadInt32()]);
Console.WriteLine("{0} Vertices", bsp.Vertices.Count);
return bsp;
}
