SCHG:Sonic Adventure DX: PC/EXE Editing

Note: There are multiple versions of SADXPC. Addresses in sonic.exe may not work for your version. Make sure the values given match your exe before editing it! Addresses that only work for the US version will be marked with US. Addresses that only work for the European version will be marked with EU. These have not been tested with the Japanese version.
Note: the cracked version is the same as the European version.
Note: to find these in RAM, add $400000.

Animation Swapping

This short section needs expansion. You can help Sonic Retro by adding to it.

Sonic's Animations

Address (US)	Address (EU)	Description	Default(dec.)
917F9	91849	Leaning forwards	7
91807	91857	Leaning back	8
92F1C	92F6C	Hurt	23
92F7A		Jump Cancel	18
93053		Light Speed Dash	64
94FDC		Falling	18
951D3		Rolling	15
95B44		Running 1	12
95B97		Springing	16
95BDA		Walking 3	11
95C27		Running 2	13
95C77		Jumping/Spindashing	14
95E2C		Walking 2	10
95E46		Walking 1	9
961DB		Victory!	75
9675C		Drowning	85
97CC0		After Jump Dash	18
97F4B		Hurt Landing	24
9BDC1		Dying	87
Metal Sonic
95B3A		Running 1	146
95BEB		Running 2	13

Tails' Animations

Address (US)	Address (EU)	Description	Default(dec.)
5C0D1		Jumping	14
5EB5C		Flying	37

Knuckles' Animations

Address (US)	Address (EU)	Description	Default(dec.)
7694A		Jumping	14
7865D		Gliding 1	51
786E9		Gliding 2 (used for a second glide without landing)	51
7888E		After Gliding	34

Action Swapping

This short section needs expansion. You can help Sonic Retro by adding to it.

Sonic's Actions

Address (US)	Address (EU)	Description	Default(dec.)
92F12		Hurt	16
92F6A	92FBA	Jump Cancel	12
92FDC		Light Speed Attack	44
93049		Light Speed Dash	6
94848		After Hurt	1
94F8F		Falling After Rolling	8
94FD3		Falling	12
95063		Standing	1
951C0		Rolling	5
95F11		Jumping	8
96001		Vertical Spring	9
96048		Spring	10
96353		Falling down building	48
9676D		Dying	86
96EFA		Spindash	4
97771		Landing and moving after rolling	2
977B9		Homing Attack/Jump Dash	14
97843		After Vertical Spring	12
978D0		After Spring	12
979A1		Landing and moving	2
97CB8		After Jump Dash	12
97CDB		After Homing Attack	8
9936B		Jumping down building	49
99393		Rolling down building	47
994B1		Running down building after jumping	46
99522		Running down building after falling	46
9A83E		Walking/Running	2
9ABE5		Level start	1
9B47A		Hit while running down building	50
Super Sonic
94EC2		Dying	86
9A3AF		Jump Cancel	78

Physics

Locations

These are indexed by $5154E8 + (Character * $84).

Character	Address
Sonic	5154E8
Tails	5155F0
Knuckles	515674
Amy	51577C
Gamma	515800
Big	515884

Offsets

These are in the same locations as in RAM. These are all Floats except Hang Time, which is 4 Bytes, measured in frames.

Offset	Description	Sonic	Tails	Knuckles	Amy	Gamma	Big
0	Hang Time	60	60	60	60	60	60
4	Amount of grip on floor	2	1.5	2	1.5	2	2
8	Horizontal Speed Cap	16	16	16	16	16	5
C	Vertical Speed Cap	16	16	16	16	16	8
10	Something to do with the maximum speed Sonic can accelerate to on his own?	3	2	2.5	0.05	2.5	1
14	?	0.6	0.6	0.6	0.5	0.6	0.2
18	Initial Jump Speed	1.66	1.66	1.66	1.3	2	2
1C	Spring Control?	3	3	3	3	3	3
20	?	0.23	0.23	0.23	0.23	0.23	0.23
24	Rolling Cancel Speed	0.46	0.49	0.46	0.46	1	0.32
28	Rolling End Speed	1.39	1.39	1.39	1.39	2	1.39
2C	Running 1 Speed	2.3	2.8	3.1	2.3	2.5	2.3
30	Minimum speed to get knocked back when hitting a wall. Also affects pushing speed?	3.7	3.7	3.7	3.7	3.7	3.7
34	Running 2 Speed	5.1	5.1	5.1	5.1	5.1	5.1
38	While jump is held, add this to speed.	0.076	0.076	0.076	0.013	0.09	0.1
3C	Ground Acceleration?	0.05	0.06	0.05	0.045	0.06	0.08
40	Air Acceleration	0.031	0.031	0.031	0.031	0.031	0.031
44	Ground Deceleration	-0.06	-0.06	-0.06	-0.06	-0.06	-0.08
48	Brake Speed	-0.18	-0.18	-0.18	-0.18	-0.25	-0.18
4C	Air Brake Speed	-0.17	-0.17	-0.17	-0.17	-0.17	-0.17
50	Air Deceleration	-0.028	-0.028	-0.028	-0.028	-0.028	-0.028
54	Rolling Deceleration	-0.008	-0.008	-0.008	-0.008	-0.008	-0.04
58	Speed to add to normal gravity?	-0.01	-0.01	-0.01	-0.01	-0.01	-0.01
5C	Speed when Sonic hits something?	-0.4	-0.4	-0.4	-0.4	-0.4	-0.4
60	Minimum speed before stopping (affects spindash charging and braking)	-0.1	-0.1	-0.1	-0.1	-0.1	-0.1
64	Seems to affect movement on sloped surfaces	-0.6	-0.6	-0.6	-0.6	-0.6	-0.6
68	Something related to acceleration on ground? Increase it to accelerate faster. 4 Bytes.	-1097817129	-1095971635	-1095971635	-1095971635	-1083808154	-1102263091
6C	?	0.3	0.3	0.3	0.3	0.3	0.3
70	Ripple Size?	4	3.5	4	3.5	4	9.5
74	Collision Size	10	9	11.4	10	21	17
78	Gravity (Multiplied by Gravity values)	0.08	0.08	0.08	0.04	0.1	0.135
7C	Y Offset for camera	7	6	9	7	20	15
80	Y Offset	5.4	4.5	5.7	5	14	8

Other Values

Address (US)	Address (EU)	Description	Default
3E007C		Water Multiplication	0.65
9439D	943ED	Super Sonic's Rolling Deceleration	-0.001
943A7	943F7	Super Sonic's Air Deceleration	-0.002
943B1	94401	Super Sonic's Air Acceleration	0.05
943BB	9440B	Super Sonic's Y Offset	6.4

Text Editing

Main Article: SCHG:Sonic Adventure DX: PC/EXE Editing/Text Editing

Misc. Code

This short section needs expansion. You can help Sonic Retro by adding to it.

This section is for code that doesn't fit into any of the above sections. To disable code, replace it with nop instructions ($90)

Address (US)	Address (EU)	Bytes	ASM	Description	Result when disabled
13D9E		C6 05 40 EF B0 03 00	mov byte ptr [03B0EF40],00	Show the HUD	Allow hiding the HUD
25AB0	25B00	66 C7 05 E4 F0 B0 03 00 00	mov word ptr [03B0F0E4],0000	Set rings to 0 when hit	Don't lose rings when hit
25B7E		00 1d 34 ef b0 03	add [03b0ef34],bl	add change to lives	Can't lose or gain lives
25C03	25C53	66 89 0D E4 F0 B0 03	mov [03B0F0E4],ecx	Ring collection	Collecting rings doesn't add to total. Also disables Super Sonic's ring drain.
25CC0		66 A1 E4 F0 B0 03	mov ax,[03B0F0E4]	Copy rings value when hit	Always spill 20 rings and can't die when hit
496DD		80 7b 09 06 0f 85 cf 00 00 00	cmp byte ptr [ebx+09],06 jne 497b6	Test if you're playing as E-102 Gamma, and branch if you aren't	NOP the jne, and everyone can walk on water. Replace it with a jmp, and nobody can.