defineBehavior

defineBehavior<S>(name, def): ComponentDef<S>

Defined in: behavior.ts:111

Define a per-entity behavior. Returns the backing ComponentDef (so you can spawn/insert it from code), and registers the lifecycle system as a side effect.

Type Parameters

S

S extends object

Parameters

name

string

def

BehaviorDef<S>

Returns

ComponentDef<S>

Example

export const Patrol = defineBehavior('Patrol', {
  state: { speed: 60 },
  update(ctx, dt) {
    const t = ctx.get(Transform);          // a copy — Transform is C++-backed
    t.position.x += ctx.self.speed * dt;
    ctx.set(Transform, t);                 // …so hand it back
  },
});