Difference between revisions of "Background/Arena File Format (.BK)"
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(BK format) |
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| Line 9: | Line 9: | ||
|Unknown || 1 BYTE || ? 1, 2 or variable | |Unknown || 1 BYTE || ? 1, 2 or variable | ||
|- | |- | ||
| − | |Width || 1 WORD || Background width | + | |Width || 1 WORD || Background width (always 320?) |
|- | |- | ||
| − | | Height || 1 WORD || Background height | + | | Height || 1 WORD || Background height (always 200?) |
|} | |} | ||
| Line 41: | Line 41: | ||
|- | |- | ||
| Something || N BYTES || Size is determined by the previous value | | Something || N BYTES || Size is determined by the previous value | ||
| + | |} | ||
| + | |||
| + | There then follows an animation structure (see .AF file format). | ||
| + | |||
| + | === Footer === | ||
| + | |||
| + | After the animations there is a footer structure: | ||
| + | |||
| + | {| border='1' | ||
| + | | Background image || W*H BYTES || W and H are the ''width'' and ''height'' in the file header | ||
| + | |- | ||
| + | | Num palettes || 1 BYTE || Specifies the number of palettes which follow | ||
| + | |} | ||
| + | |||
| + | == Palettes == | ||
| + | |||
| + | {| border='1' | ||
| + | | Palette data || 256*3 BYTES || A palette | ||
| + | |- | ||
| + | | Unknown || 1024 BYTES || | ||
| + | |- | ||
| + | | Unknown || 3840 BYTES || | ||
| + | |} | ||
| + | |||
| + | == Rest of footer == | ||
| + | |||
| + | {| border='1' | ||
| + | | Unknown || 30 BYTES || | ||
|} | |} | ||
Revision as of 23:17, 21 November 2009
The BK file format is similar in many ways to the AF file format, however, there are some signifigant differences.
Header
| Unknown | 1 DWORD | 0 for INTRO, 2 for ending cutscenes,4 for main menu/newsroom/VS/Mechlab/melee, 6 for credits,
8 for Arena0, 16 for Arena1, 32 for Arena2, 64 for Arena3 and 128 for Arena4 |
| Unknown | 1 BYTE | ? 1, 2 or variable |
| Width | 1 WORD | Background width (always 320?) |
| Height | 1 WORD | Background height (always 200?) |
Animations
Each animation is preceded by the offset of the next animation stored as a DWORD, along with an animation number. Reading the animation and advancing the file pointer should result in the file pointer being the same as the next animation offset. An animation number >= 50 marks the end of the animations section. When this occurs, the next animation offset is set to the offset of the current animation.
| Next animation | 1 DWORD | Position of next animation relative to start of file, in bytes |
| Animation number | 1 BYTE | Unique identifier for animation |
Animation Header
| Unknown | 1 BYTE | Nul padding? |
| Unknown | 1 BYTE | |
| Unknown | 1 BYTE | |
| Unknown | 1 BYTE | |
| Unknown | 1 WORD | |
| Unknown | 1 BYTE | |
| Something size | 2 BYTES | |
| Something | N BYTES | Size is determined by the previous value |
There then follows an animation structure (see .AF file format).
After the animations there is a footer structure:
| Background image | W*H BYTES | W and H are the width and height in the file header |
| Num palettes | 1 BYTE | Specifies the number of palettes which follow |
Palettes
| Palette data | 256*3 BYTES | A palette |
| Unknown | 1024 BYTES | |
| Unknown | 3840 BYTES |
| Unknown | 30 BYTES |