Differences

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-====== WRP - 4WVR ======
-Flashpoint wrp files use two different file formats to contain the data. This document contains information on 4WVR format as used by WrpTool and Visitor 2.
-This document does not discuss the alternate format, OPRW. Both file formats can be used directly by the engine, whether the file exists independently in ~\worlds, or, packed inside a pbo (addon).
-See General Wrp format for further info.
-"Binarize" tool by BIStudio will convert 4WVR to OPRW if desired.
-(some problems exist with 2 versions of binarize)
-**Conventions**
-<code>
-Intel byte order, lsb first
-byte = 1 char = 8 bits
-ulong = unsigned long, 4 bytes
-ushort= unsigned short 2 bytes
-asciiz= variable length zero terminated string.
-float= 4byte (single precision)
-</code>
-====== Structure ======
-<code>
-struct
-{
- byte Signature[4]; //"4WVR"
- ulong Xsize;       //(=256) cell dimension
- ulong Ysize;       //(=256) cell dimension
- short Elevations[Ysize][Xsize]; // eg 2*256*256 = 131072 bytes See Note
- short TextureIndex[Ysize][Xsize]; // eg 2*256*256 = 131072 bytes
-     //Each 'index' refers to a filename below. Max value = 511
- Asciiz TextureFilenames[512][32];
-/*
-A max of 512 texture files can be listed. Each is held as an asciiz string inside a fixed 32 byte
-record. Eg max length of filename is 31 characters.
-  example: data\pi.paa
-*/
-struct model
-{
- float  TransformMatrix[12]; //see below
- long   3DobjectIndex;       //the unique ouid for this model
- asciiz Filename[76];
-  //each string is held within a 76 byte record. Therefore filename is 75 chars max.
-}[variable];
-};
-</code>
-====== Note1 ======
-TransformMatrix[4][3];
-This is the transform matrix used directly by Microsoft DirectX engines.
-In fact, the 'correct' matrix is actually 4 x 4, but the last column always represents 0,0,0,1 thus
-<code>
-M11,M12 M13 (0.0)
-M21,M22,M23 (0.0)
-M31,M32,M33 (0.0)
-M41,M42,M43 (1.0)
-</code>
-and so is never stored. This identical matrix is used for WRP files (both formats) and RTM files. The last row (M41...) happens to be the position of the object X Z Y co-ordinates, and is often referred to separately.
-For further information visit [[http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/programmingguide/fixedfunction/transforms/transforms.asp|here]].
-====== Note2 ======
-The number of models varies from none, to end of file. Each model is 128 bytes in length.