Remaining functions for 100% decomp

[Bl00D4NGEL]

As of 13th April 2026 we currently have 8 functions remaining to be matched to achieve a 100% decomp for all versions.

Non matchings functions

These functions are functionally equal to the current code, they aren't byte-code equivalent though.

Format: function name (% total it would give us for decomp) decomp.me link: progress on decomp.me

menu.c

• func_8008FF1C (0.19%) decomp.me progress: 99.69%

particles.c

• init_particle_buffers (0.23%) decomp.me progress: 95.81%

racer.c

• func_80059208 (0.18%) decomp.me progress: 97.54%

tracks.c

• trackbg_render_flashy (0.31%) decomp.me progress: 97%

Non equivalent functions

These functions range from "barely compilable" to "pretty close to (non) matching but not quite there yet".

Format: name (% total it would give us for decomp) : progress on decomp.me

objects.c

• func_80017A18 (0.14%) decomp.me progress: 70.44%
• func_80017248 (0.2%) Matched on 2026-04-13
• func_800159C8 (0.33%) Matched on 2025-08-12
• func_80018CE0 (0.25%) Matched on 2025-07-04
• func_8001F460 (0.85%) Matched on 2025-06-26
• func_80021600 (0.45%) Matched on 2025-06-25
• func_8001E93C (0.16%) Matched on 2025-06-24
• func_800101AC (0.24%) Matched on 2025-06-23
• spawn_object (0.36%) Matched on 2025-06-20
• func_8000E5EC (0.05%) Matched on 2025-06-17
• func_80012F94 (0.15%) Matched on 2025-06-16
• func_8001C6C4 (0.16%) Matched on 2025-06-16
• func_80014090 (0.06%) Matched on 2025-06-11
• func_80019808 (0.47%) Matched on 2025-06-11
• func_800185E4 (0.19%) Matched on 2025-05-24

printf.c

• vsprintf (0.66%) decomp.me progress: 98.51%

racer.c

• func_80049794 (1.34%) decomp.me progress: 97.76%
• func_80045C48 (0.26%) Matched on 2025-06-20
• set_ghost_position_and_rotation (0.16%) Matched on 2025-06-18
• update_camera_car (0.29%) Matched on 2025-06-16
• update_camera_plane (0.28%) Matched on 2025-06-11
• func_8004CC20 (0.28%) Matched on 2025-06-11

tracks.c

• func_8002B0F4 (0.29%) decomp.me progress: 95.04%
• func_800304C8 (0.05%) Matched on 2025-07-01
• func_8002CC30 (0.2%) Matched on 2025-06-17

waves.c

• func_800BDC80 (0.29%) Matched on 2026-04-03

[JordanLongstaff]

Weren't there more functions in the list yesterday?

[Ryan-Myers]

Weren't there more functions in the list yesterday?

Some functions were recently matched, and the list was updated. You can see which ones in the git changelog.

[JordanLongstaff]

I see that, but I thought the records would also be kept here.

[DavidSM64]

I've been (and probably will be) busy with my new job, so I haven't spent much time with the decomp unfortunately. However, to help spark interest I'll be putting bounties on the remaining functions.

For our largest function func_80049794 I'm putting up a $50 USD bounty, and a $25 USD bounty on vsprintf. The other remaining functions I'll put at $10 USD each. They simply need to be matched to claim the bounty, as we can always clean them up later. I can pay directly, or buy a gift card to whatever.

Edit: After talking about it with other people, I have decided to take down these bounties. I jumped the gun with this idea, and didn't think about the ramifications about incentivizing decomping with money. While you won't get anything physical, you will have our eternal gratitude for every function that gets matched. Thank you.

[JordanLongstaff]

Congratulations on your new job!

[lever9870-sudo]

I wish you the best of luck with the decompilation.

[Lucoshi]

Oh boy! This is going to be good!

[MickL]

So close!! Will be SO cool to see Diddy Kong Racing in RT64 ... Too bad they never released a remaster or anything

[gyrovorbis]

Guys, KEEP GOING!!! Much love and support from the Sega Dreamcast homebrew scene!!!

[redwing509]

/attempt #613

Implementation plan:

1. Analyze the existing codebase and understand the requirements
2. Implement the requested changes with clean, tested code
3. Add comprehensive tests covering the acceptance criteria
4. Submit PR with documentation updates if needed

Estimated delivery: within 24 hours.