Beyond The End - Optimization and Fixes

    Amethyst Crab: one per area and guardians in amethyst geodes (1.1.11)

    The Cataclysm Amethyst Crab only spawns naturally in Lush Caves and is
    extremely rare with the modpack config.

    - AmethystCrabSpawnLimit: deny a NATURAL spawn of cataclysm:amethyst_crab
      when another living crab is within 96 blocks horizontally / 64
      vertically (LOWEST priority; summons, eggs and spawners unaffected).
    - GeodeCrabSpawner: every 20 s, look for amethyst geodes in the loaded
      chunks within 3 chunks and 32 blocks vertically of each Overworld
      player (section palettes only, budding amethyst). The first time a
      geode is seen it is rolled once, for good, to decide whether it has a
      guardian (5%, 1 in 20); the decision is stored in the world
      (bte_optimization_fixes_geode_crabs.dat). Guarded geodes spawn the crab
      inside: a spot with an amethyst floor where its 2.5x2.6 hitbox fits
      (amethyst buds/clusters count as free space and are broken without
      drops), at least 8 blocks from the player, through the Forge natural
      spawn events (In Control, Bad Mobs, the area limit). If it cannot spawn
      yet it is retried on the next check. The crab is persistent and every
      geode gets at most one crab per world.
    - /bteopt geodecrab: immediate attempt next to the player ignoring the
      roll, with the reason when no crab can be spawned.