Heartbeat component implementation

Implementation.hx

var _connection:SignalConnection;

override public function onStart()
{
	// grap HeartBeat component somewhere in parent entities
	var heartBeat = owner.getFromParents(HeartBeat);
	
	// listen to it
	_connection = heartBeat.beat.changed.connect(onBeatChanged);
	
	// if you want invoke the listener directly, you could use
	//_connection = heartBeat.beat.watch(onBeatChanged);
}

function onBeatChanged(to:Int, from:Int)
{
	if (to == 0) // on first note
	{
		trigger();
	}
}

function trigger()
{
	trace("spikes triggered at first note");
}

// clean up references
override public function dispose()
{
	_connection.dispose();
	super.dispose();
}