View source for BTP (File Format)

'''BTP''' ('''B'''inary '''T'''exture '''P'''attern) is a texture pattern animation file format part of JSystem.

= File Format =
== Header ==
A file starts with the following structure:

{| class="wikitable"
! Offset !! Type !! Description
|-
| 0x00 || Char[4] || '''File library magic'''. Always ''J3D1'' in ASCII.
|-
| 0x04 || Char[4] || '''File type magic'''. Always ''btp1'' in ASCII.
|-
| 0x08 || UInt32 || '''Size of file''' in bytes.
|-
| 0x0C || UInt32 || '''Number of sections''' stored in the file.
|}

After comes 0x10 bytes filled with 0x10. This is data used for a SVR block, but the magic has never been written.

== TPT ==
{| class="wikitable"
! Offset !! Type !! Description
|-
| 0x00 || Char[4] || '''Section magic'''. Always ''TPT1'' in ASCII.
|-
| 0x04 || UInt32 || '''Section size'''.
|-
| 0x08 || Byte || '''Loop mode'''.
|-
| 0x09 || Byte || {{Unknown-left|'''Unknown'''.}}
|-
| 0x0A || UInt16 || '''Number of frames'''.
|-
| 0x0C || UInt16 || '''Number of [[#Texture Pattern|texture pattern]]'''.
|-
| 0x0E || UInt16 || '''Number of global texture IDs'''.
|-
| 0x10 || UInt32 || '''[[#Texture Pattern|Texture pattern]] array offset'''.
|-
| 0x14 || UInt32 || '''Global texture ID array offset'''. Points to an array of UInt16s, which represents texture indices in a [[BMD]] file.
|-
| 0x18 || UInt32 || '''Material ID array offset'''. Points to an array of UInt16s, which represents [[BMD#MAT|material]] indices in a [[BMD]] file.
|-
| 0x1C || UInt32 || '''String table offset'''.
|}

=== Texture Pattern ===
{| class="wikitable"
! Type !! Offset !! Description
|-
| 0x00 || UInt16 || '''Number of frames''' stored for this animation.
|-
| 0x02 || UInt16 || Index of the '''first texture ID''' to use from the global texture ID array.
|-
| 0x04 || Byte || '''Map target ID'''.
|-
| 0x05 || Byte[3] || '''Padding'''.
|}

= Tools =
The following tools can handle BTP files:
* (none)

[[Category:GameCube File Formats]]
[[Category:Wii File Formats]]