Sonic and Sega Retro Message Board: Dr. D'nar - Viewing Profile - Sonic and Sega Retro Message Board

Every so often, I like to show up and post something random. Today, I bring you a speedometer for Sonic 2. I wrote it as a Lua script for the Gens Recording fork (http://code.google.c...ns-rerecording/). For fun, I also threw in a boost meter for the spin dash and a ring finder. Most of the additional HUD elements this video shows are normally hidden unless you ask for them, but I turned that off for this demo video. You can find the Lua script at http://pastebin.com/8sDbWdxK. [New version for S2 and S3&K] The full documentation for the script is the source code's header. And the script is well-labeled and commented, so you should find it easy to find and delete the relevant parts of the code for any features you don't like, or move them around, or adjust them, &c.

Here's a video of the script in action:

I have discovered that I am far too good at Sonic 2 for mine own health. Therefore, I return, briefly, to bring you a these codes. With the help of Regen's debugger and the very nice Sonic 2 disassembles, I managed to hack these codes together relatively easily. (Although, as a Z80 programmer, I find the 68K syntax to be backwards.) Each code is provided in both hex and Game Genie format. These are for NTSC.


Instant Death Mode
This code makes it so you die no matter how many rings you have. Shields still protect you.
03F894:4ef9
03f896:0003
03f898:f926
9H6A-G6YY
AS6A-GAE0
E56A-HX62


I found these in my notes. Not sure if they're original codes.

Disable Check Points:
01F298:4E75
R13A-C6Y2

Disable Checkpoints for Player 1
01F2AC:4E75
R13A-C6ZN

Disable Checkpoints for Player 2
01F332:4E75
R13T-C6VW


Because I know some people would complain that the above Instant Death Mode isn't a real DEZ mode because you can still get rings, I present this code. The rings still load, and the perfect bonus still counts down, but your ring count never goes up. Shields still protect you. This code just nops out the instruction that increments the ring count.

Death Egg Zone Mode (p1):
11FE0:0000
11FE2:0000
AAST-CAHA
AAST-CAHC

DEZ Mode (p2):
12032:0000
12034:0000
AATA-CABW
AATA-CABY


If you don't want shields to protect you, just don't get them.


Incidentally, since I am a Z80 programmer I may be able to provide help with sound programming. I've thought about making a Sonic clone for the TI-83+ series (itself based on the Z80), though I don't know enough about game design to do it.

I know Mean Bean Machine isn't really related to Sonic, but this is related to hack so here goes.

I've come to like Mean Bean Machine as a puzzle game. Problem is, in practice mode, it gets way too fast way too soon. I can sustain level 15 in Tetris, but this is ridiculous! So I wanted to find a way to change the score and stuff so that it didn't keep bumping the level up.

The score is always showing up at OxE10C and the beans at OxE116. Problem is, neither determin what happens with the level. So now, I have to find a way to change the level. Problem is, 01 is way to common a value, or 02 or 03.

Some random guy still using Win98SE and DOS (good assembly programmer though) comes in, and I start talking to him. Some time later, this pops up:

Quote

Can some one get their hands on one? Specs