Formats/SSXTricky:MPF(PS2 Model): Difference between revisions

Revision as of 08:41, 5 January 2023

Overview

An MPF file contains model names, bones, UV maps, normals, vertices and other model data.

Here is the structure made in programming languages for easy code implementation:

- [SSX Tricky mpf C# handler by GlitcherOG](https://github.com/GlitcherOG/SSX-PS2-Collection-Modder/blob/main/FileHandlers/Models/TrickyMPFModelHandler.cs)

- [SSX Tricky mpf GO struct by Erick](https://github.com/Erickson400/TheTrickyModels/blob/main/mpf/MpfStructure.go)

Structure

File Header

Section 0 - Bytes[12]


Type	Description
Byte[4]	Unknown (Possibly version or magic)
UInt16	Model Header Count
UInt16	Offset To Model Headers
UInt32	Offset To Model Data List Start

Model Header

All Offsets Within the file are relative to the start of the Model Data

Type	Description
Bytes[16]	Name of Model (ASCII string with a max length of 16 bytes)
UInt32	Offset to Model Data which is relative to Model Data List Start Offset
UInt32	Size of model in bytes
UInt32	Offset of Bone Data List
UInt32	Offset of IK Point List
UInt32	Offset of Mesh Group Offset
UInt32	Offset of Mesh Data
UInt32	Offset Of Material Data
UInt32	Offset of Weight List Reference
UInt32	Offset of Bone Weights
UInt32	Unknown (Unused/Filler)
UInt32	Unknown (Unused/Filler)
UInt16	Num of Bone Weights
UInt16	Num of Weight List Refrence
UInt16	Num Of Mesh Groups
UInt16	Num Of Bone Data
UInt16	Num Of Materials
UInt16	Num Of IK Points
UInt16	Num Of Morph Keys
UInt16	Internal File ID. This is used in conjunction with weights so that it can access bones within another file
UInt32	Filler/Padding

Model Data

All Offsets Unless Stated Otherwise are relative to the start of model data

Material Data

Unused Slots use 0x00202020 as a place holder

Type	Description
Bytes[4]	Name of Main Texture map/file
Bytes[4]	Name/Type of Texture (Unused In PS2)
Bytes[4]	Name/Type of Texture (Unused In PS2)
Bytes[4]	Name/Type of Texture (Unused In PS2)
Bytes[4]	Name/Type of Texture (Unused In PS2)
Float32	Unknown float value
Float32	Unknown float value
Float32	Unknown float value

Bone Data

Location and Rotation are relative to parent

Type	Description
Bytes[16]	Name of Bone (ASCII string with a maximum length of 16 bytes)
UInt16	Internal File ID of Parent Bone(First bone always has 0xFFFF)
UInt16	ID of Parent Bone (First bone always has 0xFFFF)
UInt16	Bone ID (?)
UInt16	Unknown
Vector 3 (3 Float32s)	XYZ Position Of the Bone
Vector 3 (3 Float32s)	XYZ Radian Rotation of the bone
Vector 3 (3 Float32s)	XYZ Radian 2
6 Float32s	6 Floats either being -1 or 1

IK Points

Type	Description
Vector 3 (3 Float32s)	Location XYZ
UInt32	Unknown (Filler)

Group Main

Group Main Header

Type	Description
UInt32	ID (?)
UInt32	Material ID
UInt32	Unknown (Always -1)
UInt32	Sub Group Offset
UInt32	Sub Group Count

Sub Group

Type	Description
UInt32	Mesh Group Offset
UInt32	Mesh Group Count

Mesh/Morph Data Group

Type	Description
UInt32	Model Offset
UInt32	Morph Target Offset Relative to Model Offset
UInt32	Morph Target Entry Size

Bone Weight

Bone Weight Header

Type	Description
UInt32	Length of array/list
UInt32	Offset to Bone weight list
UInt32	Unknown (Always 36)

Bone Weight

Type	Description
UInt16	Bone weight (0 to 100)
UInt16	Bone ID
UInt16	Bone Internal File ID

Weight List Ref

Type	Description
UInt32	Weight Reference Count
UInt32	Weight Reference Offset
Int32 List	WeightIDs

Mesh Data

Bytes[48] Unimportant Data for Exporting

Type	Description
UInt32	Strip Count
UInt32	Unknown1
UInt32	Unknown1 (Seems to have some relation to Normals)
UInt32	Vertex Count

- **Triangle Strip Count Row**

The amount of triangle strip rows can be found inside Mesh Info Row 2

_First type is assumed to be either UInt32 or Byte_

|--------|-----------|-----------------------------------------------------------------------------------------------------------------|-----|

| Type | Description |

|-----------|-----------------------------------------|

| UInt32 | Count of vertices |

| Bytes[12] | Padding/Unknown |

_mesh data continued:_

| Type | Description |

|-----------|-----------------------------------------|

| UInt24 | Count of rows |

| Byte | Unknown (Always 16) |

| Bytes[12] | Unknown |

| List | UV Block |

| List | Normal Block |

| List | Vertex Block |

## UV Block

| Type | Desc | Key |

|-----------|----------------------------------------------------------------|-----|

| Bytes[16] | Header of UV Block (Hex: 00100000 00100000 00000020 50505050) | |

| Bytes[12] | Unknown | |

| Byte | Unknown | |

| Byte | Prefix of UV count (0x80) | |

| Byte | Count of UVs | |

| Byte | Suffix of UV count (0x6D) | |

| List | List of UV values | |

**UV value**

| Type | Description |

|-----------|-----------------------------------------|

| UInt16 | UV map U (X translation) |

| UInt16 | UV map V (Y translation) |

| UInt16 | UV map U distance |

| UInt16 | UV map V distance |

## Normal Block

| Type | Desc | Key |

|-----------|-------------------------------------------------------------------|-----|

| Bytes[16] | Header of normal Block (Hex: 00000000 00800000 00000020 40404040) | |

| Bytes[12] | Unknown | |

| Byte | Unknown | |

| Byte | Prefix of Normal Count (0x80) | |

| Byte | Count of Normals | |

| Byte | Suffix of Normal count (0x79) | |

| List | List Normal values | |

**Normal value:**

| Type | Description |

|-----------|-------------------------------|

| UInt16 | Normal X direction |

| UInt16 | Normal Y direction |

| UInt16 | Normal Z direction |

## Vertex Block

| Type | Desc | Key |

|-----------|-------------------------------------------------------------------|-----|

| Bytes[16] | Header of Vertex Block (Hex: 00000000 0000803F 00000020 40404040) | |

| Bytes[12] | Unknown | |

| Byte | Unknown | |

| Byte | Prefix of Vertex count (0x80) | |

| Byte | Count of Vertices | |

| Byte | Suffix of Vertex count (0x78) | |

| List | List Vertex values | |

**Vertex value:**

| Type | Description |

|-----------|-------------------------------|

| Float32 | Location X |

| Float32 | Location Y |

| Float32 | Location Z |

## Shadow Vertex Block

| Type | Desc | Key |

|-----------|-------------------------------------------------------------------|-----|

| Bytes[16] | Header of Vertex Block (Hex: 00000000 0000803F 00000020 40404040) | |

| Bytes[12] | Unknown | |

| Byte | Unknown | |

| Byte | Prefix of Vertex count (0x80) | |

| Byte | Count of Vertices | |

| Byte | Suffix of Vertex count (0x6C) | |

| List | List Vertex values | |

**Vertex value:**

| Type | Description |

|-----------|-------------------------------|

| Float32 | Location X |

| Float32 | Location Y |

| Float32 | Location Z |

| UInt32 | Unknown |

***

**End of MPF Structure**

@@ Line 194: / Line 194: @@
 |-
 |UInt32
-|Unknown
+|Unknown (Always -1)
 |-
 |UInt32
@@ Line 232: / Line 232: @@
 ===== Bone Weight Header =====
+{| class="wikitable"
-| Offset | Type   | Description                | Key | Rel |
+!Type
+!Description
-|--------|--------|----------------------------|-----|-----|
+|-
+|UInt32
-| 0x00   | UInt32 | Length of array/list       |     |     |
+|Length of array/list
+|-
-| 0x04   | UInt32 | Offset to Bone weight list |     |     |
+|UInt32
+|Offset to Bone weight list
-| 0x08   | UInt32 | Unknown                    |     |     |
+|-
+|UInt32
+|Unknown (Always 36)
+|}
 ===== Bone Weight =====
+{| class="wikitable"
-| Offset | Type   | Description            | Key | Rel |
+!Type
+!Description
+|-
+|UInt16
+|Bone weight (0 to 100)
+|-
+|UInt16
+|Bone ID
+|-
+|UInt16
+|Bone Internal File ID
+|}
+==== <u>Weight List Ref</u> ====
-|--------|--------|------------------------|-----|-----|
+{| class="wikitable"
+!Type
+!Description
+|-
+|UInt32
+|Weight Reference Count
+|-
+|UInt32
+|Weight Reference Offset
+|-
+|Int32 List
+|WeightIDs
+|}
+==== <u>Mesh Data</u> ====
-| 0x00   | UInt16 | Bone weight (0 to 100) |     |     |
+Bytes[48] Unimportant Data for Exporting
+{| class="wikitable"
+!Type
+!Description
+|-
+|UInt32
+|Strip Count
+|-
+|UInt32
+|Unknown1
+|-
+|UInt32
+|Unknown1 (Seems to have some relation to Normals)
+|-
+|UInt32
+|Vertex Count
+|}
-| 0x02   | UInt8  | Bone ID                |     |     |
-| 0x03   | UInt8  | Unknown                |     |     |
+- **Triangle Strip Count Row**
-==== <u>Number List Ref</u> ====
+The amount of triangle strip rows can be found inside Mesh Info Row 2
-===== Number List Ref Header =====
-| Offset | Type   | Description                 | Key | Rel |
+_First type is assumed to be either UInt32 or Byte_
-|--------|--------|-----------------------------|-----|-----|
-| 0x00   | UInt32 | Sub  Number List Ref Count  |     |     |
-| 0x04   | UInt32 | Sub  Number List Ref Offset |     |     |
-<nowiki><br></nowiki>
-===== Sub Number List Ref =====
-| Offset | Type   | Description            | Key | Rel |
-|--------|--------|------------------------|-----|-----|
-|        | UInt16 | Unknown                |     |     |
-|        | UInt16 | Unknown2               |     |     |
-<nowiki><br></nowiki>
-<nowiki>##</nowiki> Mesh Data
 | Offset | Type      | Description                                                                                                     | Key |
@@ Line 308: / Line 327: @@
 |        | List      | List of Triangle Strip Count Rows                                                                               |     |
-- **Triangle Strip Count Row**
-The amount of triangle strip rows can be found inside Mesh Info Row 2 <nowiki><br></nowiki>
-_First type is assumed to be either UInt32 or Byte_
 | Type      | Description                             |