(function() {
	var playing = false;
	var howLong = 1000*10;

	Messages.subscribe("com.realitybloc.observatory");

	var buttonPressed = function() {
		Messages.sendMessage("com.realitybloc.observatory", "pressed");
		//onMessageReceived("com.realitybloc.observatory", "playing");
	}

	function onMessageReceived(chan, msg) {
		if (chan!="com.realitybloc.observatory") return;
		if (msg!="playing") return;
		if (playing) return;
		playing = true;

		// check if in range
		var observatoryEntityID = Entities.findEntitiesByName(
			"Observatory", MyAvatar.position, 1000000
		)[0];
		if (!observatoryEntityID) return;

		var inRange = false;
		var observatoryEntity = Entities.getEntityProperties(observatoryEntityID, ["position"]);
		inRange = (Vec3.distance(MyAvatar.position, observatoryEntity.position)<10);
		
		// inrange interval
		var inRangeInterval = Script.setInterval(function() {
			var observatoryEntity = Entities.getEntityProperties(observatoryEntityID, ["position"]);
			inRange = (Vec3.distance(MyAvatar.position, observatoryEntity.position)<10);
		}, 500);

		// rotate the player
		var dateNow = Date.now()
		var outOfRangeReset = true;
		var interval = Script.setInterval(function() {
			if (inRange && !HMD.active) {
				outOfRangeReset = false;
				var time = (Date.now()-dateNow);
				MyAvatar.orientation = Quat.multiply(
					Quat.cancelOutRollAndPitch(MyAvatar.orientation),
					Quat.fromPitchYawRollDegrees(
						//Math.sin(time*0.02)*0.5,
						0,
						0,
						Math.cos(time*0.01)*1
					)
				);
			} else {
				if (outOfRangeReset) return;
				if (!HMD.active) MyAvatar.orientation = Quat.cancelOutRollAndPitch(MyAvatar.orientation);
				outOfRangeReset = true;
			}
		}, 1000/90);

		// clean up
		Script.setTimeout(function() {
			if (inRange && !HMD.active) MyAvatar.orientation = Quat.cancelOutRollAndPitch(MyAvatar.orientation);
			Script.clearInterval(inRangeInterval);
			Script.clearInterval(interval);
			playing = false;
		}, howLong);
	}

	Messages.messageReceived.connect(onMessageReceived);
	Script.scriptEnding.connect(function () {
		Messages.messageReceived.disconnect(onMessageReceived);
	});

	this.startNearTrigger = buttonPressed;
	this.startFarTrigger = buttonPressed;
	this.clickDownOnEntity = function(entityID, mouseEvent) {
		if (mouseEvent.isLeftButton) buttonPressed();
	}
})