Sonic 2 Nick Arcade Disassembly

Oh thank goodness, it's MainMemory. I was wondering if anybody knew how to, b/c I will be releasing a final release of the disam soon, and wanted to have that capability.


MainMemory, the compressions are as followed.


8x8: Nemesis


16x16: Uncompressed


128x128: Uncompressed


Layout: Uncompressed


Collision Format: Kosinski


Collision Compression: Uncompressed


I hope this helps.

 

Forgot about this thread, surprised to see it alive.


Regarding equates, they ARE useful. If you want this on Retro's SVN eventually, I'd recommend that you stick to the structure laid out in the S2 SVN disassembly.

 

That matter was already solved Spanner. I've decided to release a version that has equates and one that doesn't. TBH, I'm planning on restarting the whole disam all together anyway, seeing as it doesn't work in Gens for some reason. But I really need to know about SonLVL, seeing at is becoming the next best thing since SonED.

 

You didn't mention that the level layouts used a modified version of Sonic 1's format with no loop flag.


Also, I can't get GHZ1 to load, and SonED2 shows random blocks all over the place.

 

It's because the GHZ's chunks uses an uncracked compression format

Code:

MainLvlLoadBlk_Load128:

		movea.l	(a2)+,a0

		cmpi.b	#2,(RAM_Level_CurrentZone).w	;CPZ[MZ]?

		beq.s	MainLvlLoadBlk_Default_128

		cmpi.b	#3,(RAM_Level_CurrentZone).w	;EHZ[SLZ]?

		beq.s	MainLvlLoadBlk_Default_128

		cmpi.b	#4,(RAM_Level_CurrentZone).w	;HPZ[SYZ]?

		beq.s	MainLvlLoadBlk_Default_128

		cmpi.b	#5,(RAM_Level_CurrentZone).w	;HTZ[SBZ]?

		beq.s	MainLvlLoadBlk_Default_128

 

		move.l	a2,-(sp)			;Load chunks with the uncracked compression

		moveq	#0,d1

		moveq	#0,d2

		move.w	(a0)+,d0

		lea	(a0,d0.w),a1

		lea	(RAM_MetablockTable).l,a2

		lea	(RAM_LevelLayout).w,a3

 

MainLvlLoadBlk_OldChkLoad_Loop:

		bsr.w	UnknownDec

		tst.w	d0

		bmi.s	MainLvlLoadBlk_OldChkLoad_Loop

		movea.l	(sp)+,a2

		bra.s	MainLvlLoadBlk_LoadLayout

; ===============================================================================

 

MainLvlLoadBlk_Default_128:

		lea	(RAM_MetablockTable).l,a1

		move.w	#$3FFF,d0

MainLvlLoadBlk_Def_128_Loop:

		move.w	(a0)+,(a1)+

		dbf	d0,MainLvlLoadBlk_Def_128_Loop

 

In that case, I'm done with the INI (no object definitions). You can download it here, you'll need to update SonLVL first.

 

Hey GenesisFan64, I just realized, do you think it would be a good idea to have GHZ's chunks be in Kosinski Format? I could in theory code that in all together and make hacking like 9000 times easier.

 

Why not have GHZ's chunks in the same format as every other level's?

 

oh yeah, I could do that to. I'll get on it later this week and give you an update sir.

 

Thats a Bloody good idea