Urban Chaos PRM

PRM

• Game : Urban Chaos
  
• Format Type : 3D Model
  
• Endian Order : Little Endian
  

Format Specifications

// Urban Chaos 
// PRM file format (3D Model)

//header
UINT16 Magic  // "\xA2\x16"
char(x) - Model Name // for example "ambulance"
UINT16 First point ID
UINT16 Last point ID
UINT16 First quadrangle ID
UINT16 Last quadrangle ID
UINT16 First triangle ID
UINT16 Last triangle ID

//properties
UINT8 Collision type
BOOL8 Reaction to an impact by a vehicle
UINT8 Shadow type
BOOL8 Various properties

//points coordinates
num_of_points *
{
   INT16 Position X
   INT16 Position Y
   INT16 Position Z
}

//quadrangles structure
num_of_quadrangles *
{
   UINT8 Texture ID group
   BOOL8 Properties
   UINT16 Point A ID
   UINT16 Point B ID
   UINT16 Point C ID
   UINT16 Point D ID

   UINT8 U position of the point A on the texture grid (u)
   UINT8 V position of the point A on the texture grid (v)
   UINT8 U position of the point B on the texture grid (u)
   UINT8 V position of the point B on the texture grid (v)
   UINT8 U position of the point C on the texture grid (u)
   UINT8 V position of the point C on the texture grid (v)
   UINT8 U position of the point D on the texture grid (u)
   UINT8 V position of the point D on the texture grid (v)

   UINT16 Unknown
   UINT16 Unknown
   UINT16 Unknown
   UINT16 Unknown
   UINT32 Unknown
   BOOL8 Properties
   UINT8 More properties
   UINT16 Unknown
}

//triangles structure
num_of_triangles *
{
   // same as quadrangles but without the D point
}

MultiEx BMS Script

Not written yet.

Notes and Comments

• Files with this file format can be found inside "\Urban Chaos\server\prims\" folder.
• PRM files are also known as "Prim Objects".

Compatible Programs

• PRM Model Viewer