Sonic Adventure DX: PC/EXE Editing/Object List

This article is a work in progress. Its content and location may change completely and frequently until this notice is removed.

The following is a list of objects in the US version of sonic.exe. For the EU version, adding $50 to addresses usually works. All values are in hex unless explicitly specified otherwise. Load and Main Sub pointers are given as a RAM address, subtract 0x400000 to find it in the exe file. To load an object in ASM, you need to use the following template:

push [loadsub]
push [arg2]
push [arg1]
call 0xB860
add esp, 0x0C

Then the eax register will contain a pointer to the Master Object Struct of the object, or 0 if it failed to create the object.

Name	Debug Name(s)	Description	Load Sub	Main Sub	Arg 1	Arg 2
Sonic		The character Sonic, both playable and in cutscenes.	49A9B0	49A9B0	7	1
Tails		The character Tails, both playable and in cutscenes.	461700	461700	7	1
Knuckles		The character Knuckles, both playable and in cutscenes.	47A770	47A770	7	1
Amy		The character Amy, both playable and in cutscenes.	48ABF0	48ABF0	7	1
Gamma		The character E-102 Gamma, both playable and in cutscenes.	483430	483430	7	1
Big		The character Big, both playable and in cutscenes.	490A00	490A00	7	1
Tornado		The Tornado and Tornado 2 planes with Sonic and Tails, from Sky Chase.	627EC0	627EC0	7	1
Barrier		The visible part of a Barrier powerup. Doesn't protect you.	4BA580	4BA380	2	2
Magnetic Barrier		The visible part of a Magnetic Barrier powerup. Doesn't protect you or attract Rings.	4BA550	4BA2A0	2	2
Invincibility		The visible part of an Invincibility powerup. Doesn't protect you, but does handle the invincibility timer.	4BA5B0	4BA440	2	2
Ring	Ring, I Ring, O Ring, Ring___	A ring.	450370	450370	2	3
Spring	SPRING, O SPRING	A spring pointing up.	7A4C30	7A4C30	2	2