Difference between revisions of "Shadow the Hedgehog (game)/Technical information/Spline format"
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| float[3] | | float[3] | ||
| Rotation (X, Y, Z) | | Rotation (X, Y, Z) | ||
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| + | | Distance to next point, last one is 0 | ||
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Revision as of 00:56, 7 June 2019
| Shadow the Hedgehog technical information |
|---|
| Main Article |
| Level Editing |
| Stage parameters |
| Stage ID list |
| Object layout format |
| Effect data |
| Spline format |
| Misc |
| Cutscene ID list |
In Shadow the Hedgehog, splines are stored in PATH.PTP files located inside each stage's stgLLLL_dat.one file.
Contents
File Format
The layout file is composed of 6 sections: the header, the array of offsets to spline entries, the array of splines, the array of spline names, and two unknown sections.
Section 1 - Header (0x20 bytes)
| Offset | Type | Description |
|---|---|---|
| 0x00 | int | Total length of file in bytes |
| 0x04 | int | Offset to section 5 (relative to end of header) |
| 0x08 | int | Length of array with spline headers? (sometimes it's a bit different) |
| 0x0C | int | Unknown |
| 0x10 | int | Unknown |
| 0x14 | int | Unknown |
| 0x18 | int | Unknown |
| 0x1C | int | Unknown |
All offsets in the file are relative to this point, 0x20.
Section 2 - Array of Offsets
| Offset | Type | Description |
|---|---|---|
| 0x00 | int[] | Array with offsets to splines (relative to end of header). Not sure where count is kept, maybe the game just reads it until it finds a 0 since there are a few at the end |
Section 3 - Array of Spline Entries
Spline Header (0x30 bytes)
| Offset | Type | Description |
|---|---|---|
| 0x00 | int | Amount of points in spline |
| 0x04 | float | Total length of spline |
| 0x08 | int | Offset to start of point data (relative to end of header) |
| 0x0C | byte | Unknown |
| 0x0D | byte | Unknown |
| 0x0E | byte | Unknown |
| 0x0F | byte | Unknown |
| 0x10 | float[3] | Maximum X, Y and Z values in points |
| 0x1C | int | Unknown |
| 0x20 | float[3] | Minimum X, Y and Z values in points |
| 0x2C | int | Offset to spline name (relative to end of header) |
Spline Point (0x20 bytes)
| Offset | Type | Description |
|---|---|---|
| 0x00 | float[3] | Position (X, Y, Z) |
| 0x0C | float[3] | Rotation (X, Y, Z) |
| 0x18 | float | Distance to next point, last one is 0 |
| 0x1C | int | Unknown |
Section 4 - Array of Spline Names
| Offset | Type | Description |
|---|---|---|
| 0x00 | string[] | Array with spline names, each spline references this by an offset, strings are 0 terminated, no padding is done |
| - | byte[] | Padding until file is 4-byte aligned |
Section 5 - Unknown
I have no idea what this section does
Section 6 - File Name
| Offset | Type | Description |
|---|---|---|
| 0x00 | string | A path to a file name, possibly the file which contained spline data before compilation. Probably ignored by the game. |