Demo

Use

Start tracking another object

obj.track(target, {
  // Default options:
  offsetX          : 0,
  offsetY          : 0,
  trackRotation    : false,
  rotateOffset     : false,
  disableBodyMoves : true
})

• obj is a Sprite or Emitter
• target is a Display Object, a Pointer, or any object with x and y
• trackRotation: match the object’s rotation to the target’s rotation
• rotateOffset: rotate the offset around the target by the target’s rotation
• disableBodyMoves: suspend the object’s physics movement while tracking

An Emitter moves its launch point (emitX, emitY) to follow the target. A Sprite moves its position.

The object stops tracking only if

• the target is destroyed; or
• a Pointer target is deactivated; or
• you call untrack

It doesn’t stop tracking if the target is killed.

It will not track while its own exists is false.

Stop tracking

obj.untrack()

Change Log

• 1.0.0 (2018-02-21) — Changed track arguments
• 0.1.3 (2017-02-27) — First NPM release