BAA (File Format)

BAA (Binary AI Action) is a filetype found into competitions, specifically found as AIParam.baa; it changes action parameters for the Mario Kart Wii's in race CPUs. AIParam can be added into any track to make more challenging gameplay in offline versus races. When this file is not present, the parameters are controlled instead by kartAIActionParam.bin, found inside Common.szs.

File Format

BAA files use the same exact data format as kartAIActionParam.bin, but instead of having one section per difficulty level, there's just a single set of 12 entries that override the file aforementioned.

Entry

There are 12 entries in each section, matching each CPU player. Each value is percentage based. The game generates a random number from 0 to 99 and then compares it to one of the fields. If the random number is less than the value, the CPU will perform the action.

Offset	Type	Action
0x00	Float	Getting the rocket boost.
0x04	Float	Busting the engine, if missed the rocket boost.
0x08	Float	Starting a drift on a curve/force drift section.
0x0C	Float	Releasing a mini-turbo after a drift.
0x10	Float	Doing a trick.
0x14	Float	Performing a wheelie on a force wheelie section.
0x18	Float	Unknown.
0x1C	Float	Unknown. Triggered right before swerving left/right?

Tools

The following tools can handle BAA files:

• (none)