Proto:Sonic Adventure (Dreamcast)/AutoDemo/Stage Differences/Twinkle Park

This is a sub-page of Proto:Sonic Adventure (Dreamcast)/AutoDemo/Stage Differences.

This article is a work in progress. ...Well, all the articles here are, in a way. But this one moreso, and the article may contain incomplete information and editor's notes.

Download Fixed Twinkle Park File: Sonic Adventure Autodemo Twinkle Park.zip (422 KB) (info)

Twinkle Park normally crashes upon trying to play it, however SPEEPS managed to get the stage working in 2024 after correcting all pointers. Textures for the stage are present, but normally do not load in-game, requiring further modifications to get them properly displaying. Act 1 also has an invalid object ID 0x3D, which the download above modifies to replace with a ring to prevent another crash.

Differences

• The LandTables and their respective models are mostly been finalized, although the beginning of Act 1 had different textures, while the path before the double loop is lower than it should be. The ceiling at the beginning of Act 1 is also bugged, hanging significantly lower than it should be.
• Act 1's object layout doesn't match up with the level layout at all, being far away from the geometry (at roughly 395, -85, -144). In fact, it seems to match up near-perfectly with footage of the stage from the Tokyo International Forums unveiling footage. Due to the SET file having a build date of September 9, 1998, it's likely work continued on the old version before being overhauled. Unfortunately, any unique objects it used have already been removed from this build, so it's any guess as to how the stage progressed. Act 1 references an object with the ID of 0x3D, which now crashes the game.
• Most of the objects used (and unused) in the final game have already been implemented, just not placed in any levels yet.
• There's a camera file called CAM0300.BIN, lacking the character suffix; the used one is CAM0300S.BIN. The unused one is dated July 30, 1998, making it one of the oldest files in the build.
• Act 3 has camera data, but it doesn't match at all with the stage layout, being far below and to the right of what it should normally be.

Also found within the data is an early model for the swinging ship in Act 2, overall being smaller and less detailed than the final game.