SECTOR

Contents

Frame name should begin with “sector”.
In Mafia, they should be always at world origin (0;0;0).

SECTOR (v29)

Name            Type       Bytes
>---------------------------------------------------
flags1          uint32      4     
flags2          uint32      4    
numVerts        uint32      4
numFaces        uint32      4
vertices        vector3[numVerts]
faces           face[numFaces]
min             vector3    12
max             vector3    12
numPortals      uint8       1
portals         PORTAL[numPortals]

  • flags1 (uint32) - usually 2049, 2113, 2305
    bit 0 - unknown,
    bit 1 - disable,
    bit 6 - occlude

  • flags2 (uint32) - unknown, usually zero, non-zero only in HD2

  • numVerts (uint32)

  • numFaces (uint32)

  • vertices (vector3[])

  • faces (face[])

  • min, max (vector3) - local space bounding box

  • numPortals (uint8) - size of portals array

  • portals (PORTAL[])

SECTOR (v41, v42)

Sector struct in v41 and v42 have the same entries but in slightly different layout - min max are at a different location, they come before vertex and face data.

Version 41 (HD2) uses vector4. Version 42 (Chameleon) uses vector3.

        Name            Type       Bytes
        ----------------------------------------------------
        flags1          uint32      4     
        flags2          uint32      4     
        numVerts        uint32      4
        numFaces        uint32      4
   |->  min             vector4/vector3  16/12   <---|
   |->  max             vector4/vector3  16/12   <---|    
   |    vertices        vector4/vector3[numVerts]    |
   |    faces           face[numFaces]               |
   |--                                             --| 
   |--                                             --| 
        numPortals      uint8       1
        portals         PORTAL[numPortals]