Difference between revisions of "Pikmin 2 cutscene file"

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|uint16
 
|uint16
 
|Byte order mark? Always <code>0xFEFF</code>
 
|Byte order mark? Always <code>0xFEFF</code>
 +
|-
 +
|0x6
 +
|uint16
 +
|Unknown. Always 0x0003?
 
|-
 
|-
 
|0x8
 
|0x8
Line 243: Line 247:
  
 
∗ Ending offset differs depending on the amount of JMSG objects there are since each object gets its own 12 bytes of control values.
 
∗ Ending offset differs depending on the amount of JMSG objects there are since each object gets its own 12 bytes of control values.
 +
 +
= JCMR =
 +
Object that deals with the camera movement.
 +
{| class="wikitable"
 +
|+JCMR object
 +
|-
 +
!Offset
 +
!Type
 +
!Description
 +
|-
 +
|0x0
 +
|uint32
 +
|Size of section in bytes
 +
|-
 +
|0x4
 +
|char[4]
 +
|String that spells "JACT"
 +
|-
 +
|0x8
 +
|uint32
 +
|Length of object name.
 +
|-
 +
|0xC
 +
|char[length]
 +
|Object name
 +
|-
 +
|0xC+length rounded up to multiple of 4
 +
|JCMR data entries
 +
|See below
 +
|}
 +
 +
{| class="wikitable"
 +
|+JCMR data entry
 +
|-
 +
!Offset
 +
!Type
 +
!Description
 +
|-
 +
|0x0
 +
|uint32
 +
|If equal to 0, terminates list of data entries and no further JCMR data follows. Otherwise equal to 0x8000003C
 +
|-
 +
|0x4
 +
|0x40 bytes of data
 +
|Only exists if previous value was 0x8000003C, purpose unknown
 +
|}
 +
 +
= JACT =
 +
{| class="wikitable"
 +
|+JACT object
 +
|-
 +
!Offset
 +
!Type
 +
!Description
 +
|-
 +
|0x0
 +
|uint32
 +
|Size of section in bytes
 +
|-
 +
|0x4
 +
|char[4]
 +
|String that spells "JACT"
 +
|-
 +
|0x8
 +
|uint32
 +
|Length of object name.
 +
|-
 +
|0xC
 +
|char[length]
 +
|Object name
 +
|-
 +
|0xC+length rounded up to multiple of 4
 +
|JACT data
 +
|unknown
 +
|}
 +
The first character in the name of a JACT object has a meaning: "+" means special actor, "@" means particle actor, "*" means creature.
 +
 +
= JSND =
 +
 +
still being looked into atm but is suspected to be for music
 +
 +
= JCNT =
 +
 +
have no idea but i suspect that it either does nothing or is for the frames in a cutscene- Cube 2024
  
 
[[Category:Pikmin 2]]
 
[[Category:Pikmin 2]]
 
[[Category:File formats]]
 
[[Category:File formats]]

Latest revision as of 20:30, 9 March 2024

Cutscenes in Pikmin 2 are controlled by a file called demo.stb. This file can be found in each of the cutscene archives in /user/Mukki/<name of cutscene>/demo.szs. Cutscenes have predetermined number of frames.

This page describes the format of the file. The page is work in progress.

STB Header
Offset Type Description
0x0 char[4] String that spells "STB", terminated by a null byte
0x4 uint16 Byte order mark? Always 0xFEFF
0x6 uint16 Unknown. Always 0x0003?
0x8 uint32 Total file size
0xC uint32 Amount of objects
0x10 char[8] String that spells "jstudio", terminated by a null byte
0x18 uint8[6] Likely 6 bytes of padding
0x1E int16 Unknown. Always 0x04?

After the STB header follows object data. The following info explains that object data:

JFVB[edit]

JFVB is one of the possible objects that can appear in the stb file. The size of the JFVB data is usually big because it's like its own section inside the file. For the purpose of the object count, JFVB counts as one object.

JFWB object
Offset Type Description
0x0 uint32 JFVB total data size (starting with 0x0 to end)
0x4 char[4] String that spells "JFVB"
0x8 FVB data See table below for more info
FVB data
Offset Type Description
0x0 char[4] String that spells "FVB", terminated by a null byte
0x4 uint16 Byte order mark? Always 0xFEFF
0x6 uint16 Unknown, always 0x0100?
0x8 uint32 FVB data size (starting with "FVB" string to end)
0xC uint32 Amount of entries in FVB data entry list
0x10 FVB data entry list See table below for more info
FVB data entry
Offset Type Description
0x0 uint32 Entry size starting from 0x0 to end
0x4 uint16 Entry type?
0x6 uint16 Offset to data? Always 0
0x8 Subentry list The list of subentries is terminated by a null entry (4 null bytes).

FVB entry types: 1 (composite), 2 (constant), 3 (transition), 4 (list), 5 (list parameter), 6 (hermite). Only 2 and 6 are known to be used by Pikmin 2.

Subentry
Offset Type Description
0x0 uint16 Total subentry size, starting from offset 0x04 to end
0x2 uint16 Subentry type
0x4 Subentry data Exact data layout depends on subentry type and the type of the entry the subentry is located in

Known subentry types:

  • 0x00: terminates the list of subentries
  • 0x01: If entry type is 2, one float follows. If entry type is 6, a 4 bytes integer and many floats follow. The integer is broken up like this: the first 4 bits are the width of the following float table, the remaining bits are the height. Multiply width with height to get the amount of floats that follow. Table is likely used for interpolation, possibly related to hermite interpolation.
  • 0x12: Only known to be used in entry type 6. This subentry contains two floats which specify a value range. It appears before a 0x01 subentry.

JMSG[edit]

This object handles the querying of messages from the BMG database and responsible for the calling message boxes onscreen. There are two segments to the JMSG objects, first is an array of message box objects, and then a control section with additional parameters. For the sake of object count, each JMSG counts as an object while the controls are independantly just one object.

JMSG object
Offset Type Description
0x0 uint32 Size of section in bytes
0x4 char[4] String that spells "JMSG"
0x8 uint32 If this is the first message box this is set to 0x0000000B, else 0x0000000C
0xC 10 bytes A string in Shift-JIS Romaji, "メッセージ", or "Message" in English
0x16 uint16 Unknown identifer?[unsure]
0x18 uint16 An identifer? Value is always 0x0200
0x1A uint16 Value represents what frame to pause the cutscene and display the message box onscreen
0x1C 8 Bytes Value doesn't appear to change, always 0x8000000800040859
0x24 uint32 ID of message
0x28 uint16 Same as value from 0x14. Always 0x0200
0x2A uint16 Always 0x0001
0x2C uint16 Padding of 0x00's, end of section
JMSG controls section
Offset Type Description
0x0 uint32 Size of section in bytes
0x4 uint32 Padding of 0xFF's
0x8 uint32 Unknown, set to 0x0000000D
0xC 12 bytes A string in Shift-JIS Romaji, "コントロール", or "Control" in English
0x18 uint32 Padding of 0x00's
0x1C 12 Bytes Start of control values for the JMSG object
0x28* uint32 Padding of 0x00's, end of section

∗ Ending offset differs depending on the amount of JMSG objects there are since each object gets its own 12 bytes of control values.

JCMR[edit]

Object that deals with the camera movement.

JCMR object
Offset Type Description
0x0 uint32 Size of section in bytes
0x4 char[4] String that spells "JACT"
0x8 uint32 Length of object name.
0xC char[length] Object name
0xC+length rounded up to multiple of 4 JCMR data entries See below
JCMR data entry
Offset Type Description
0x0 uint32 If equal to 0, terminates list of data entries and no further JCMR data follows. Otherwise equal to 0x8000003C
0x4 0x40 bytes of data Only exists if previous value was 0x8000003C, purpose unknown

JACT[edit]

JACT object
Offset Type Description
0x0 uint32 Size of section in bytes
0x4 char[4] String that spells "JACT"
0x8 uint32 Length of object name.
0xC char[length] Object name
0xC+length rounded up to multiple of 4 JACT data unknown

The first character in the name of a JACT object has a meaning: "+" means special actor, "@" means particle actor, "*" means creature.

JSND[edit]

still being looked into atm but is suspected to be for music

JCNT[edit]

have no idea but i suspect that it either does nothing or is for the frames in a cutscene- Cube 2024

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