public bool LoadBspFile(Stream buffer)
{
BinaryReader reader = new BinaryReader(buffer);
// read header
string id = Encoding.ASCII.GetString(reader.ReadBytes(4), 0, 4);
int version = reader.ReadInt32();
if (id != "IBSP" && id != "VBSP")
{
return(false);
}
int nHeaderLumps;
if (id == "IBSP")
{
if (version != 0x2E)
{
return(false);
}
nHeaderLumps = 17;
}
else// if (id == "VBSP")
{
if (version != 0x14)
{
return(false);
}
nHeaderLumps = 64;
IsVbsp = true;
}
BspLump[] lumps = new BspLump[nHeaderLumps];
for (int i = 0; i < lumps.Length; i++)
{
lumps[i].Offset = reader.ReadInt32();
lumps[i].Length = reader.ReadInt32();
if (IsVbsp)
{
reader.ReadInt32(); // lump format version
reader.ReadInt32(); // lump ident code
}
}
// read brushes
int lumpHeaderOffset = IsVbsp ? (int)VBspLumpType.Brushes : (int)IBspLumpType.Brushes;
buffer.Position = lumps[lumpHeaderOffset].Offset;
int length = lumps[lumpHeaderOffset].Length / Marshal.SizeOf(typeof(BspBrush));
Brushes = new BspBrush[length];
for (int i = 0; i < length; i++)
{
Brushes[i].FirstSide = reader.ReadInt32();
Brushes[i].NumSides = reader.ReadInt32();
Brushes[i].ShaderNum = reader.ReadInt32();
}
// read brush sides
lumpHeaderOffset = IsVbsp ? (int)VBspLumpType.BrushSides : (int)IBspLumpType.BrushSides;
buffer.Position = lumps[lumpHeaderOffset].Offset;
length = lumps[lumpHeaderOffset].Length / Marshal.SizeOf(typeof(BspBrushSide));
BrushSides = new BspBrushSide[length];
for (int i = 0; i < length; i++)
{
if (IsVbsp)
{
BrushSides[i].PlaneNum = reader.ReadUInt16();
reader.ReadInt16(); // texinfo
BrushSides[i].ShaderNum = reader.ReadInt16();
reader.ReadInt16(); // bevel
}
else
{
BrushSides[i].PlaneNum = reader.ReadInt32();
BrushSides[i].ShaderNum = reader.ReadInt32();
}
}
// read entities
Entities = new Dictionary <string, BspEntity>();
buffer.Position = lumps[(int)IBspLumpType.Entities].Offset;
length = lumps[(int)IBspLumpType.Entities].Length;
byte[] entityBytes = new byte[length];
reader.Read(entityBytes, 0, length);
string entityString = Encoding.ASCII.GetString(entityBytes);
string[] entityStrings = entityString.Split('\n');
BspEntity bspEntity = null;
foreach (string entity in entityStrings)
{
switch (entity)
{
case "\0":
continue;
case "{":
bspEntity = new BspEntity();
break;
case "}":
Entities.Add(bspEntity.ClassName, bspEntity);
break;
default:
string[] keyValue = entity.Trim('\"').Split(new[] { "\" \"" }, 2, 0);
switch (keyValue[0])
{
case "classname":
bspEntity.ClassName = keyValue[1];
break;
case "origin":
string[] originStrings = keyValue[1].Split(' ');
bspEntity.Origin = new Vector3(
float.Parse(originStrings[0], CultureInfo.InvariantCulture),
float.Parse(originStrings[1], CultureInfo.InvariantCulture),
float.Parse(originStrings[2], CultureInfo.InvariantCulture));
break;
default:
if (!bspEntity.KeyValues.ContainsKey(keyValue[0]))
{
if (keyValue.Length == 1)
{
bspEntity.KeyValues.Add(keyValue[0], "");
}
else
{
bspEntity.KeyValues.Add(keyValue[0], keyValue[1]);
}
}
break;
}
break;
}
}
// read leaves
lumpHeaderOffset = IsVbsp ? (int)VBspLumpType.Leafs : (int)IBspLumpType.Leaves;
buffer.Position = lumps[lumpHeaderOffset].Offset;
length = lumps[lumpHeaderOffset].Length;
length /= IsVbsp ? 32 : Marshal.SizeOf(typeof(BspLeaf));
Leaves = new BspLeaf[length];
for (int i = 0; i < length; i++)
{
if (IsVbsp)
{
reader.ReadInt32(); // contents
Leaves[i].Cluster = reader.ReadInt16();
Leaves[i].Area = reader.ReadInt16();
//Swap Y and Z; invert Z
Leaves[i].Min.X = reader.ReadInt16();
Leaves[i].Min.Z = -reader.ReadInt16();
Leaves[i].Min.Y = reader.ReadInt16();
//Swap Y and Z; invert Z
Leaves[i].Max.X = reader.ReadInt16();
Leaves[i].Max.Z = -reader.ReadInt16();
Leaves[i].Max.Y = reader.ReadInt16();
Leaves[i].FirstLeafFace = reader.ReadUInt16();
Leaves[i].NumLeafFaces = reader.ReadUInt16();
Leaves[i].FirstLeafBrush = reader.ReadUInt16();
Leaves[i].NumLeafBrushes = reader.ReadUInt16();
reader.ReadInt16(); // leafWaterDataID
//reader.ReadInt16(); // ambientLighting
//reader.ReadSByte(); // ambientLighting
reader.ReadInt16(); // padding
}
else
{
Leaves[i].Cluster = reader.ReadInt32();
Leaves[i].Area = reader.ReadInt32();
//Swap Y and Z; invert Z
Leaves[i].Min.X = reader.ReadInt32();
Leaves[i].Min.Z = -reader.ReadInt32();
Leaves[i].Min.Y = reader.ReadInt32();
//Swap Y and Z; invert Z
Leaves[i].Max.X = reader.ReadInt32();
Leaves[i].Max.Z = -reader.ReadInt32();
Leaves[i].Max.Y = reader.ReadInt32();
Leaves[i].FirstLeafFace = reader.ReadInt32();
Leaves[i].NumLeafFaces = reader.ReadInt32();
Leaves[i].FirstLeafBrush = reader.ReadInt32();
Leaves[i].NumLeafBrushes = reader.ReadInt32();
}
}
// read leaf brushes
lumpHeaderOffset = IsVbsp ? (int)VBspLumpType.LeafBrushes : (int)IBspLumpType.LeafBrushes;
buffer.Position = lumps[lumpHeaderOffset].Offset;
length = lumps[lumpHeaderOffset].Length;
length /= IsVbsp ? sizeof(short) : sizeof(int);
LeafBrushes = new int[length];
for (int i = 0; i < length; i++)
{
if (IsVbsp)
{
LeafBrushes[i] = reader.ReadInt16();
}
else
{
LeafBrushes[i] = reader.ReadInt32();
}
}
// read planes
lumpHeaderOffset = IsVbsp ? (int)VBspLumpType.Planes : (int)IBspLumpType.Planes;
buffer.Position = lumps[lumpHeaderOffset].Offset;
length = lumps[lumpHeaderOffset].Length;
length /= IsVbsp ? (Marshal.SizeOf(typeof(BspPlane)) + sizeof(int)) : Marshal.SizeOf(typeof(BspPlane));
Planes = new BspPlane[length];
for (int i = 0; i < length; i++)
{
Planes[i].Normal.X = reader.ReadSingle();
Planes[i].Normal.Y = reader.ReadSingle();
Planes[i].Normal.Z = reader.ReadSingle();
Planes[i].Distance = reader.ReadSingle();
if (IsVbsp)
{
reader.ReadInt32(); // type
}
}
if (!IsVbsp)
{
// read shaders
Shaders = new List <BspShader>();
buffer.Position = lumps[(int)IBspLumpType.Shaders].Offset;
length = lumps[(int)IBspLumpType.Shaders].Length / (64 + 2 * sizeof(int));
byte[] shaderBytes = new byte[64];
for (int i = 0; i < length; i++)
{
BspShader shader = new BspShader();
reader.Read(shaderBytes, 0, 64);
shader.Shader = Encoding.ASCII.GetString(shaderBytes, 0, Array.IndexOf(shaderBytes, (byte)0));
shader.SurfaceFlags = reader.ReadInt32();
shader.ContentFlags = (ContentFlags)reader.ReadInt32();
Shaders.Add(shader);
}
}
return(true);
}
public void ConvertBsp(BspLoader bspLoader, float scaling)
{
Vector3 playerStart = GetPlayerPosition(bspLoader);
playerStart.Z += 20.0f; //start a bit higher
playerStart *= scaling;
foreach (BspLeaf leaf in bspLoader.Leaves)
{
bool isValidBrush = false;
for (int b = 0; b < leaf.NumLeafBrushes; b++)
{
int brushID = bspLoader.LeafBrushes[leaf.FirstLeafBrush + b];
BspBrush brush = bspLoader.Brushes[brushID];
if (brush.ShaderNum == -1)
{
continue;
}
ContentFlags flags = bspLoader.IsVbsp
? (ContentFlags)brush.ShaderNum
: bspLoader.Shaders[brush.ShaderNum].ContentFlags;
if ((flags & ContentFlags.Solid) == 0)
{
continue;
}
var planeEquations = new List <Vector4>();
brush.ShaderNum = -1;
for (int p = 0; p < brush.NumSides; p++)
{
int sideId = brush.FirstSide + p;
BspBrushSide brushside = bspLoader.BrushSides[sideId];
BspPlane plane = bspLoader.Planes[brushside.PlaneNum];
Vector4 planeEquation = new Vector4(plane.Normal, scaling * -plane.Distance);
planeEquations.Add(planeEquation);
isValidBrush = true;
}
if (isValidBrush)
{
List <Vector3> vertices = GeometryUtil.GetVerticesFromPlaneEquations(planeEquations);
const bool isEntity = false;
Vector3 entityTarget = Vector3.Zero;
AddConvexVerticesCollider(vertices, isEntity, entityTarget);
}
}
}
/*
* foreach (BspEntity entity in bspLoader.Entities)
* {
* if (entity.ClassName == "trigger_push")
* {
* }
* }
*/
}
