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Verfasst: Fr Mär 04, 2005 07:50

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Registriert: Mi Jul 21, 2004 22:39
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Wohnort: UK, Scotland

Im wondering if anyone knows of any materials on the RBSP format (Lightmaps & Colour Arrays) or any projects that tryed to render RBSP maps.

RBSP is Ravens version of ID Softwares Q3 BSP Format, the main difference between the two is that faces in RBSP can have 4 lightmaps and 4 Colour Arrays(Don't know the actual term, they basicaly have colour references and are used to light the Mesh's insted of using lightmaps) but IBSP can only have 1 lightmap and 1 colour array per face. I havn't been able to work out how to make the lightmaps work (currently only renders the first lightmap, which works most of the time but there are noticable bits that arn't right)

Note: If anyone would like the IBSP Format or RBSP Format "Layout" (All the Types, i.e Faces, Vertex's Etc) just ask.

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rswm

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Verfasst: Fr Mär 04, 2005 09:37

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Registriert: Mi Aug 28, 2002 19:27
Beiträge: 568
Wohnort: Chemnitz / Sachsen

i don't know an answer but i would ask you about the rbsp-specs ...

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Verfasst: Fr Mär 04, 2005 14:37

DGL Member

Registriert: Mi Jul 21, 2004 22:39
Beiträge: 360
Wohnort: UK, Scotland

Useful Links

- Jan Horns BSP loader (Basic IBSP Loading but shows the basics of loading the BSP files)
- Harry Painters Q3MapView (Advanced Q3 Map Loader)
- IBSP Spec
- RBSP Spec
- QCommon with RBSP support

Basic "Maths Code" used below

Code:

 
type TVector3f = record
  X, Y, Z : single;
end;
 
type TVector2f = record
  X, Y : single;
end;
 

The header is the first bit of info in the BSP file, StrID should be RBSP and Version should be 1. Note: In IBSP maps valid versions are 46 (Q3) and 47 (RTCW)

Code:

 
type TBSPHeader = record
  strID : array[0..3] of char;           // This should always be 'IBSP'
  Version : integer;                     // This should be 0x2e for Quake 3 files
end;
 

The offset to all the "Sections" are stored in Lumps, they define the size of the "Section" and its offset.

Code:

 
type TBSPLump = record
  Offset : integer;                      // The offset into the file for the start of this lump
  Length : integer;                      // The length in bytes for this lump
end;
 

The Sections are layed out like the following:

Code:

 
const
  kEntities    = 0;            // Stores player/object positions, etc...
  kTextures    = 1;            // Stores texture information
  kPlanes      = 2;            // Stores the splitting planes
  kNodes       = 3;            // Stores the BSP nodes
  kLeafs       = 4;            // Stores the leafs of the nodes
  kLeafFaces   = 5;            // Stores the leaf's indices into the faces
  kLeafBrushes = 6;            // Stores the leaf's indices into the brushes
  kModels      = 7;            // Stores the info of world models
  kBrushes     = 8;            // Stores the brushes info (for collision)
  kBrushSides  = 9;            // Stores the brush surfaces info
  kVertices    = 10;           // Stores the level vertices
  kMeshVerts   = 11;           // Stores the model vertices offsets
  kEffects     = 12;           // Stores the effect shaders (face to brush)
  kFaces       = 13;           // Stores the faces for the level
  kLightmaps   = 14;           // Stores the lightmaps for the level
  kLightVolumes= 15;           // Stores extra world lighting information (For meshes)
  kVisData     = 16;           // Stores PVS and cluster info (visibility)
  kLightArray   = 17;           // Unknown
 
  kMaxLumps    = 18;           // A constant to store the number of lumps
 

The first section is the entitys, they are stored in plain text and look like:

Code:

 
{
classname Bannana
someproperty somevalue
model 20
}

The 2nd is the textures which are stored like

Code:

 
type TQ3FileTexture = record
  TextureName : array[0..63] of char;    // The name of the shader
  flags    : cardinal;                    // The surface flags (unknown)
  contents : cardinal;                    // The content flags (unknown)
end;
 

3rd is planes

Code:

 
type TBSPPlane = record
    Normal : TVector3f;         // Plane normal.
    d : single;                         // The plane distance from origin
end;
 

4th is Nodes

Code:

 
type TBSPNode = record
  plane : integer;                  // The index into the planes array
  front : integer;                  // The child index for the front node
  back : integer;                   // The child index for the back node
  min : TVector3i;                      // The bounding box min position.
  max : TVector3i;                      // The bounding box max position.
end;
 

5th is leafs

Code:

 
type TBSPLeaf = record
  cluster : integer;                // The visibility cluster
  area : integer;               // The area portal
  min :  TVector3i;                 // The bounding box min position.
  max : TVector3i;                  // The bounding box max position.
  leafface : integer;               // The first index into the face array
  numOfLeafFaces : integer;         // The number of faces for this leaf
  leafBrush : integer;              // The first index for into the brushes
  numOfLeafBrushes : integer;           // The number of brushes for this leaf
end;
 

6th is Leaf faces, which is an Array Of Integer. The Leaf's leafface points to the start leaf of the Leaf Face array, which inturn points to the actual face id. (faces are still to come)

7th is the leaf brushes, which is an Array Of Integer. Its use is the same as the Leaf Faces array, but fro brushes.

8th is the models (Note: Models point to faces, all entitys that are visible(aka rendered) or use an area to detect things (like a trigger_multipul) use the models). Model 0 is always the level's model

Code:

 
type TBSPModel = record
  min              : TVector3f;       // The min position for the bounding box
  max              : TVector3f;       // The max position for the bounding box.
  faceIndex        : integer;         // The first face index in the model
  numOfFaces       : integer;         // The number of faces in the model
  brushIndex       : integer;         // The first brush index in the model
  numOfBrushes     : integer;         // The number brushes for the model
end;
 

9th is brushes

Code:

 
type TBSPBrush = record
  brushside       ,           // First brushside for brush
  numOfBrushsides ,           // Number of brushsides for brush
  Texture         : integer;  // Texture index
end;
 

10th is brush sides. Note: this is the RBSP Version

Code:

 
type TRBSPBrushSide=record
  plane   ,                   // Plane Index
  texture, Face : integer;          // Texture Index
end;
 

11th is the Vertex's. Note: this is the RBSP Version

Code:

 
type TRBSPVertex = record
  Position      : TVector3f;             // (x, y, z) position.
  TextureCoord  : TVector2f;             // (u, v) texture coordinate
  LightmapCoord : array [0..3] of TVector2f;             // (u, v) lightmap coordinate
  Normal        : TVector3f;             // (x, y, z) normal vector
  Color         : array [0..3] of array [0..3] of Byte;    // RGBA color for the vertex
end;
 

12th is MeshVerts which is an array of integer. (Its used with the faces to work out which vertex's should be drawn, note the way Jan Horn does it is wrong, Mesh Verts should be used)

13th is Effects (which to my knowlage is just fog, its fog thats applyed to the face its self not the world using shaders and some maths to work out how solid it looks(Alpha))

Code:

 
type TFileEffect = record
  Name        : array[0..63] of char;  // effect shader
  brushIndex  : integer;               // brush that generated this effect
  visibleSide : integer;               // the brush side that ray tests need to clip against (-1 == none)
end;
 

14th is Faces. Note: RBSP version

Code:

 
type TRBSPFace = record
  textureID : integer;                   // The index into the texture array
  effect    : integer;                   // The index for the effects (or -1 = n/a)
  FaceType  : integer;                   // 1=polygon, 2=patch, 3=mesh, 4=billboard
  startVertIndex : integer;              // The starting index into this face's first vertex
  numOfVerts     : integer;              // The number of vertices for this face
  meshVertIndex  : integer;              // The index into the first meshvertex
  numMeshVerts   : integer;              // The number of mesh vertices
  unknown1       : array [0..3] of byte; // lightmapStyles
  unknown2       : array [0..3] of byte; // vertexStyles
  lightmapID     : array [0..3] of integer;              // The texture index for the lightmap
  lMapCorner : array [0..3] of array[0..1] of integer;   // The face's lightmap corner in the image
  lMapSize   : array[0..1] of integer;   // The size of the lightmap section
  lMapPos  : TVector3f;                  // The 3D origin of lightmap.
  lMapVecs : array[0..1] of TVector3f;   // The 3D space for s and t unit vectors.
  Normal  : TVector3f;                  // The face normal.
  Size : array[0..1] of integer;         // The bezier patch dimensions.
end;
 

15th is lightmaps

Code:

 
type TBSPLightmap = record
  imageBits : array[0..127, 0..127, 0..2] of byte;   // The RGB data in a 128x128 image
end;
 

16th is Light Volumes. If im correct there used for the lighting of the Models, i.e weapons, player models, since u can't use Lightmaps. Never implemented or seen it implemented in a Delphi app (hence the C code). Note: RBSP Version

Code:

 
typedef struct
{
    unsigned char   ambient[BSP_STYLES][3];
    unsigned char   diffuse[BSP_STYLES][3];
    unsigned char   styles[BSP_STYLES];
    unsigned char   direction[2];
} dgridlight_t;
 

17th is Vis Data

Code:

 
type TBSPVisData = record
  numOfClusters : integer;      // The number of clusters
  bytesPerCluster : integer;        // The amount of bytes (8 bits) in the cluster's bitset
  Bitsets : array of byte;      // The array of bytes that holds the cluster bitsets
end;
 
//Reading it
 
    if (lumps[kVisData].length > 0 ) then begin
      BlockRead(F, clusters.numOfClusters, sizeof(integer));
      BlockRead(F, clusters.bytesPerCluster, sizeof(integer));
      size := clusters.numOfClusters * clusters.bytesPerCluster;
      SetLength(clusters.Bitsets, size);
      BlockRead(F, clusters.Bitsets[0],sizeof(byte)* size);
    end
    else
      SetLength(clusters.Bitsets, 0);
 

18th is LightArray (RBSP Only), i havn't seen it implemented in any 3rd party app, or seen the Type definition of it.

If anyone ever comes across the COD or EF2 specs plz inform me (There isn't any information i have found on EF2 format, and only some of the lumps of the COD format)

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