Special Macro objects are objects that are loaded into the level from the level script command 0x2E. Their main purpose is to save space in the ROM, since they only take up 8, 10, or 12 bytes each whereas regular objects take up 24 bytes. However, they are more limited than the regular objects loaded from the level script command 0x24.

ROM Hacks of SM64 usually won't use special macro objects, since ROM space is not an issue.

• You can only directly modify the position, Y rotation, and the first two behavior parameters of the object.
• They will always appear in every act in the level, as they don't have an act mask.
• Each special macro object contains a preset ID, that references a list that tells the object what model ID and behavior are.

The level script command 0x2E loads a list of special macro objects during it's collision loading routine. The length of the object is determined by the Preset ID (see preset table entries below).

[ID ID] [XX XX] [YY YY] [ZZ ZZ]

[ID ID] [XX XX] [YY YY] [ZZ ZZ] [RY RY]

[ID ID] [XX XX] [YY YY] [ZZ ZZ] [RY RY] [B1] [B2]

The Preset ID is used to get the Model ID, Behavior address, and the default Behavior parameters for the object. The location of this table differs based on the version of the game you are using.

Each entry in the table takes up 8 bytes. The list ends when a preset ID of 255 (0xFF) is found.

[ID] [B1] [B2] [MM] [BS BS BS BS]

Anything with a question mark (?) means that it is a guess, and needs to be verified.

* Level Geometry has different names based on the level you are in.