Hutt Castle

WIP A Hutt Castle is a structure that occurs naturally underground on the planet Tatooine, and is the only place where Gamorreans and Hutts can spawn. Hutt Castles can be located by spotting the tower that generate on the surface above the castles, with a spiral staircase that generate down until reaching the castle.

=Generation= Hutt Castles are located underground at random coordinates within rings on Tatooine, where each ring is a certain radius from the center of the planet surface (X=0, Z=0). The castles are generated at roughly equal angles from the center point of the planet surface (for instance, each stronghold in a ring of 3 is in the region of 120 degrees from the others, measured from the origin). The tower part of the castles generate partially above the ground.

There are eight rings, containing 128 Hutt Castles in total:
 * The 1st ring has 3 Hutt Castles within 1,280-2,816 blocks of the origin.
 * The 2nd ring has 6 Hutt Castles within 4,352-5,888 blocks of the origin.
 * The 3rd ring has 10 Hutt Castles within 7,424-8,960 blocks of the origin.
 * The 4th ring has 15 Hutt Castles within 10,496-12,032 blocks of the origin.
 * The 5th ring has 21 Hutt Castles within 13,568-15,104 blocks of the origin.
 * The 5th ring has 28 Hutt Castles within 16,640-18,176 blocks of the origin.
 * The 7th ring has 36 Hutt Castles within 19,712-21,248 blocks of the origin.
 * The 8th and outermost ring has 9 Hutt Castles within 22,784-24,320 blocks of the origin.