var hasSpawned = false;

var spotlight, helicopter,audioInjector,speed;


var spawnHelicopter = function(){
					

	var modelURL = "https://s3.amazonaws.com/hifi-public/eric/models/helicopter.fbx?v3";
	var animationURL = "https://s3.amazonaws.com/hifi-public/eric/models/bladeAnimation.fbx?v7";
	var spawnPosition = {
	    x: 1002,
	    y: 145,
	    z: 1041
	};
	
	speed = .15;
	
	var helicopterSound = SoundCache.getSound("https://hifi-public.s3.amazonaws.com/ryan/helicopter.L.wav");
	audioInjector = Audio.playSound(helicopterSound, {
	    volume: 1,
	    loop: true
	});
	

	
	
	helicopter = Entities.addEntity({
	    type: "Model",
	    name: "Helicopter",
	    modelURL: modelURL,
	    animation: {
	        url: animationURL,
	        running: true,  
	        fps: 180
	
	    },
	    dimensions: {
	        x: 12.13,
	        y: 3.14,
	        z: 9.92
	    },
	    // rotation: Quat.fromPitchYawRollDegrees(0, -90, 0),
	    position: spawnPosition,
	});
	
	
	
	spotlight = Entities.addEntity({
	    type: "Light",
	    name: "helicopter light",
	    intensity: .75,
	    color: {
	        red: 220,
	        green: 220,
	        blue: 255
	    },
	    
	    dimensions: {
	        x: 2,
	        y: 2,
	        z: 200
	    },
	    exponent: 0.01,
	    cutoff: 10,
	    isSpotlight: true
	});
		
	}
	
function cleanup() {

    Entities.deleteEntity(helicopter);
    Entities.deleteEntity(spotlight);

}

function update() {
	if (!Entities.serversExist() || !Entities.canRez()) {
    	return;
    }

    if (hasSpawned === false) {
        hasSpawned = true;
        spawnHelicopter()

    } 

    var modelProperties = Entities.getEntityProperties(helicopter, ['position', 'rotation']);
    var lightTransform = evalLightWorldTransform(modelProperties.position, modelProperties.rotation);
    Entities.editEntity(spotlight, {
        position: lightTransform.p,
        rotation: lightTransform.q
    });

    audioInjector.setOptions({
        position: modelProperties.position,
    });

    //Move forward 
    var newRotation = Quat.multiply(modelProperties.rotation, {
        x: 0,
        y: .0002,
        z: 0,
        w: 1
    })
    var newPosition = Vec3.sum(modelProperties.position, Vec3.multiply(speed, Quat.getFront(modelProperties.rotation)));
    Entities.editEntity(helicopter, {
        position: newPosition,
        rotation: newRotation
    });
}


	// These constants define the Spotlight position and orientation relative to the model 
	var MODEL_LIGHT_POSITION = {
	    x: 2,
	    y: 0,
	    z: -5
	};
	var MODEL_LIGHT_ROTATION = Quat.angleAxis(-90, {
	    x: 1,
	    y: 0,
	    z: 0
	});
	
	// Evaluate the world light entity positions and orientations from the model ones
	function evalLightWorldTransform(modelPos, modelRot) {
	
	    return {
	        p: Vec3.sum(modelPos, Vec3.multiplyQbyV(modelRot, MODEL_LIGHT_POSITION)),
	        q: Quat.multiply(modelRot, MODEL_LIGHT_ROTATION)
	    };
	}

Script.update.connect(update);
Script.scriptEnding.connect(cleanup);