Sonic Adventure/Level Data Formats

SCHG: Sonic Adventure
Dreamcast Gamecube 2004 PC 2010 PC
Sonic Adventure (Dreamcast) Main Article Object Editing Editing Objects File Name Layout Format Special Objects Object Lists Programs Sound Editing Sound Editing Music List Voices Sound Effects Model Editing Format Models Animations Locations Models Levels Level Data Formats Save Files Main Save Chao Save Misc Level List Character Animation Lists Textures Sonic Adventure DX (Gamecube) Main Article Object Editing Editing Objects File Name Layout Format Special Objects Object Lists Missions Programs Sound Editing Sound Editing Music List Voices Sound Effects Save Files Main Save Chao Save Misc Level List Character Animation Lists Textures Sonic Adventure DX (PC) Main Article Object Editing Editing Objects File Name Layout Format Special Objects Object Lists Missions Programs Sound Editing Sound Editing Music List Voices Sound Effects EXE Editing EXE Editing Animation Swapping Action Swapping Physics Text Editing Misc. Code Function List Object List DLL Files CHRMODELS.DLL ADV00MODELS.DLL ADV01MODELS.DLL ADV01CMODELS.DLL ADV02MODELS.DLL ADV03MODELS.DLL CHAOSTGGARDEN02MR_DAYTIME.DLL CHAOSTGGARDEN02MR_EVENING.DLL CHAOSTGGARDEN02MR_NIGHT.DLL Model Editing Format Models Animations Locations Models Animations Levels Level Data Formats RAM Editing RAM Editing Global Variables Emblems Event Flags Character Object 1 Character Object 2 Character Object 3 Save Files Main Save Chao Save Misc Level List Character Actions Character Animation Lists Textures How-To Import Levels Sonic Adventure (2010) Main Article Object Editing Editing Objects File Name Layout Format Special Objects Object Lists Missions Programs Sound Editing Sound Editing Music List Voices Sound Effects Save Files Main Save Chao Save Misc Level List Character Actions Character Animation Lists Textures

Disclaimer

Each level in Sonic Adventure is a compiled C++ file with embedded model data. They are usually similar in structure, but there is technically the possibility that some things may be in different locations for different levels.

LandTable header format

This struct defines the number of models and animations in the level, the location of the corresponding lists, and the texture list used. The name comes from the label in the DLL Export table of various DLLs in the PC version.

Offset	Type	Description
0	Short	COL Count
2	Short	Anim Count
4	Int	Flags Bit Value (hex) Description 0 1 Has animations 1 2 Has texture list 4 8 Has texture name
8	Float	Unknown, usually 3000
C	Pointer	COL List
10	Pointer	Anim List
14	Pointer	Texture file name. Optional. If not null, a PVM with this name will be loaded to the address pointed to by the texture list pointer.
18	Pointer	Texture List
1C	Int	Unknown
20	Int	Unknown

COL format

The name COL is an antiquated misnomer, but for lack of a better name, it stuck. This data struct is a reference for loading a level model. It's 0x24 bytes long and works as follows:

Offset	Type	Description
0	Float[3]	Center of collision sphere
C	Float	Radius of collision sphere
10	8 Bytes	Padding?
18	Pointer	Model (OBJECT Struct)
1C	Int	Unknown
20	Int	Surface Flags (see below)

Surface flags

These flags are not entirely figured out yet, but here's what is known for sure:
0x00000001 = Solid
0x00000002 = Water (overrides solid flag, makes surface transparent)
0x00000004 = No Friction
0x00000008 = No Acceleration
0x00000080 = Increased Acceleration
0x00000100 = Diggable
0x00001000 = Unclimbable
0x00010000 = Hurt
0x00100000 = Footprints
0x80000000 = Visible