Cave unit generation
Each cave unit in Pikmin 2 has a SZS file with its settings. Each unit's setting file archive can be found in /user/Mukki/mapunits/arc/*/texts.szs.
grid.bin
Collision file for area models.
This file is the collision data located where the waterbox and mapcode files are for area maps. Yoshi2's tool [obj2grid|https://github.com/RenolY2/obj2grid] converts any .OBJ to a perfectly working grid.bin and mapcode.bin which will work in-game.
layout.txt
This file controls the spawn coordinates for objects.
The second line of the file, which follows the comment BaseGen file, specifies the number of spawn coordinate entries in the list. It is commented with num gens (number of generators).
Each entry in the list is inside its own block.
Spawn coordinate
The first line in the block is the "type". Think of it as a group. Whenever the game wants to spawn an enemy, it picks a random coordinate from the same group as the enemy is. For instance, static Gatling Groinks should probably belong in a different group from the regular, free-roaming enemies. For a list of group IDs and what they're normally used for (although this is not a hard rule), see here.
The second line is the coordinates themselves, in the format X Y Z.
To do: Document the third line.
The fourth line is the maximum radius in which the enemies can randomly spread out from the initial point.
The fifth and sixth lines are the lower and upper limits of the random amount. Every time the game picks a spawn coordinate to use, it generates a number between these two limits, inclusive. Then, it spawns that number of enemies in this spot (until it spawns more than it intended to, at least).
mapcode.bin
To do: Document this.
More Collison.
route.txt
Carrying paths.
To do: Document this.
waterbox.txt
Water boxes in the unit.
To do: Document this.
