BehaviorContext

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The per-entity handle passed to a behavior’s lifecycle hooks. self is the behavior’s own component data — mutate it freely, the change persists. The object is REUSED across entities and frames (zero per-entity allocation): do not retain it past the hook call; copy what you need.

Type Parameters

S

S extends object

Properties

commands

readonly commands: CommandsInstance

Defined in: behavior.ts:44

Deferred structural ops (spawn / despawn / insert) — safe mid-iteration.

entity

readonly entity: number

Defined in: behavior.ts:36

The entity this behavior instance is attached to.

input

readonly input: InputState

Defined in: behavior.ts:42

Runtime input (keyboard / mouse / touch).

self

readonly self: S

Defined in: behavior.ts:38

This behavior’s own component data — mutate freely (persists).

time

readonly time: TimeData

Defined in: behavior.ts:40

Frame timing (delta seconds, elapsed, …).

world

readonly world: World

Defined in: behavior.ts:46

The world, for cross-entity access.

Methods

get()

get<C>(component): ComponentData<C>

Defined in: behavior.ts:55

Read another component on THIS entity.

For a script component this IS the stored object, so mutating it sticks. For an ENGINE component (Transform, Sprite, RigidBody2D — anything C++-backed) it is a copy decoded out of the wasm heap: mutating it changes nothing. Read it, change it, and hand it back through set.