[MainMemory]

So, I decided to mess around with Sonic R after Polygon Jim told me that the controls work if you run it from IDA.

Make it stop crashing on fast systems:

00070584 - 2e ff 15 8c 05 95 00	   - call cs:[0095058c]

000705A0 - 2e ff 15 8c 05 95 00	   - call cs:[0095058c]
----------------------------------------------------------
00070584 - b8 31 00 00 00			 - mov eax,00000031
00070589 - 90						 - nop
0007058A - 90						 - nop

000705A0 - b8 01 00 00 00			 - mov eax,00000001
000705A5 - 90						 - nop
000705A6 - 90						 - nop

Original on top, fix on bottom. Thanks to soundspark on YouTube.

Save File Format (INCOMPLETE):

04 - Resort Island
08 - Radical City
0C - Reactive Factory
10 - Regal Ruin
14 - Radiant Emerald
18 - Sonic
1C - Tails
20 - Knuckles
24 - Amy Rose
28 - Dr. Robotnik
2C - Metal Sonic
30 - Tails Doll
34 - Metal Knuckles
38 - Eggrobo
3C - Super Sonic
40 - Blue Emerald
44 - Green Emerald
48 - Purple Emerald
4C - Yellow Emerald
50 - Orange Emerald
54 - Red Emerald
58 - White Emerald
Stage:
0=Locked
1=Unlocked
2=First Place
Character:
0=Hidden
1=Locked
2=Unlocked
Emerald:
0=Not Collected
1=???
2=Collected

Thanks to saxman's save editor.

I replaced ai\aistuffr.bin with ai\aistuffi.bin, and the CPUs in Regal Ruin were running around like idiots.

I replaced city\city_b.bin with emerald\emrald_b.bin, and this happened:

It's using Radical City's textures, floor and solidity, but Radiant Emerald's model and object layout (including the start/finish line).

The biggest problem with this game is that I would need a second computer to do any RAM hacking, and you need to run it through IDA.
Unless there's a way to force it into a window?

[Jeztac]

You can use this to run it in a forced windowed mode: http://www.filefront.com/5335168/DXWND---MS/

Has issues if you use Intel GMA though.

[Spanner]

You might be able to circumvent the fullscreen issue by attaching a second monitor to your computer and setting it to act as a seperate screen. I'm unsure if that'll help you though.

[MainMemory]

You can use this to run it in a forced windowed mode: http://www.filefront.com/5335168/DXWND---MS/

Has issues if you use Intel GMA though.

No you can't. Cheat Engine's DirectX-mess doesn't work either, and I think it's because it doesn't start D3D until you select it in the menu.

[Jeztac]

What exactly didn't work when you tried it? I've used it with no issues, though in DirectDraw mode.

[MainMemory]

What exactly didn't work when you tried it? I've used it with no issues, though in DirectDraw mode.

It still runs in fullscreen mode, in either setting. Also, I think it crashes Internet Explorer?

Edit: Also, every other time, Sonic R refuses to start, leaving me with a black screen. I have to Ctrl+Alt+Del and kill IDA.

This post has been edited by MainMemory: 01 December 2009 - 06:17 PM

[Authur]

Heh, not a bad idea! Hacking Sonic R should be pretty interesting if it can be pulled off. Here's a question though, are you guys trying to do this through the PC version or an emulated Saturn rom of the game?

[MainMemory]

Heh, not a bad idea! Hacking Sonic R should be pretty interesting if it can be pulled off. Here's a question though, are you guys trying to do this through the PC version or an emulated Saturn rom of the game?

PC.

Edit: SCHG:Sonic R PC

This post has been edited by MainMemory: 01 December 2009 - 07:31 PM

[Ice God]

I was talking to Jimmy while he did all of this over skype before you. Credit him where it's due.

[MainMemory]

I was talking to Jimmy while he did all of this over skype before you. Credit him where it's due.

What? I said that he told me it worked with IDA.

[Polygon Jim]

I was talking to Jimmy while he did all of this over skype before you. Credit him where it's due.

What? I said that he told me it worked with IDA.

Yeah, but I already was working on the savegame, and already messing around with models.

This post has been edited by Polygon Jim: 01 December 2009 - 07:54 PM

[MainMemory]

How am I supposed to know that? I did this myself.

[Tweaker]

Unless he was stealing info from you—and from the looks of things, he didn't—there's nothing wrong with him posting his own findings. If you want to be first, then post before him—simple as that.

[Skeledroid]

I've always thought Sonic R should be hacked to make a full fledge 3D Sonic game. This would be a lot cooler if you hacked the Saturn version for the sake of having a 3D Sonic game on it.

[MainMemory]

And if you don't want me to hack something, don't talk to me about it. You got me interested.