Mario Kart Wii - Unused AIParam.bas Parameter / Mode (Parameter 1)
10AIParam.bas files (used to change CPU speed-related settings in competitions, overriding kartAISpdParam.bin) have an unused parameter / mode, of value 1.
This parameter forces the default CPU max speed to be what's set in the "speed advantage" field of the BAS file + 70. This means that if a BAS file has a large speed advantage value set, CPUs will drive very fast, and they will drive slow if said value is low. This mode also appears to override the engine class speed multiplier (so for example, a 50cc race won't necessarily make CPUs slower).
To demonstrate this, I modified two competitions:
The N64 DK's Jungle Parkway competition has the speed advantage set to 45, which results in CPUs having a default max speed of 115.
The DS Twilight House competition has the speed advantage set to -8, which results in CPUs having a default max speed of 62.
You can use the following code to test this for yourself during a competition / tournament:
(PAL)
04731D10 38600001
04731D28 38000001
On the bottom you can see the current maximum soft speed limit for the player, the first and the second CPU. This was displayed using Dolphin Memory's Engine and a MKW watchfile provided by the Kinoko team: https ://github.com/vabold/Kinoko
More info on BAS files: https ://wiki.tockdom.com/wiki/BAS_(File_Format)
You can see the values set for the AIParam files per competition here: https: //docs.google.com/spreadsheets/d/14MrTFf-WrXytfXwU6pr5j8C-u2Zanml33xVhUFLt1UI/edit?pli=1&gid=737924637#gid=737924637
Check out the Tournament Museum mod for being able to play competitions / tournaments offline: https ://wiki.tockdom.com/wiki/Tournament_Museum
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