NPC

Shift + Hive. .shift compiles AI to u8 ids. .hive bakes Health/Target columns. Flare can snapshot Hive and replicate the Shift id. Sweep Destroy when the model dies.

src/shared/Npc.shift:

state Idle
state Chase parent Combat
Idle -> Chase when SeePlayer
Chase -> Idle when Lost

src/shared/NpcWorld.hive:

component Health { i32 current, i32 max }
component Target { i32 dummy }

#include "Npc.clh"
#include "NpcWorld.clh"
#include <clpp/libs/sweep.clh>

void init() {
  HiveWorld world = NpcWorld.New();
  ShiftMachine brain = Npc.New();
  int entity = world.Entity();
  world.Set(entity, NpcWorld.Health, 100);
  brain.ChangeState("Idle");
}

RobloxStateMachine used string states and polled OnDataChanged every frame. Shift does not. Hive is ECS columns, not a second FSM.

See Shift and Hive.