Shulker

Registry name

etfuturum.shulker

Health: 30 HP
Armor: 0 (open) / 20 (closed) — isClosed() returns true when peekTick == 0
Size: 1 × 1 (base, but collision box dynamic based on attachment face and peek amount)
Spawn conditions: End dimension; spawns on end gateway portals and on blocks in the End (attached to surfaces)
Drops: Shulker shell (50%+ chance, affected by loot table; only if ModItems.SHULKER_SHELL enabled)
Behaviour: Stationary golem that attaches to block faces. Opens to reveal head and shoots projectiles at players.

Attaches to any solid block face on spawn
Teleports to a new nearby position (up to 8 blocks away) if block below attachment becomes air, or if below 50% health and random check passes
Teleport targets require: air block at target, solid face on one of the 6 adjacent sides
Does not move on its own otherwise

Closed state (peekTick == 0): immune to arrows, armor value = 20
Open/attacking state: armor value = normal (0), can be damaged
When health drops below 50%: 25% chance per tick to teleport
If hit by another shulker’s bullet and teleported: may spawn a new shulker at the original position (chance based on nearby shulker count)

Color data watcher: values 0–15 for dye colours, 16 = default purple (undyed)
Right-click with dye: changes colour
Right-click with water bucket on water-immersed shulker: resets to colour 16 (undyed)
Colour is preserved on teleport/spawn