Head Tilt - Left / Right

HI, Jonathon!

Here is a super simple script you could start with:

//@input Component.Head head 
//@input float threshold = 0.2 {"widget" : "slider", "min" : 0, "max" : 1, "step" : 0.01}

var headTransform = script.head.getSceneObject().getTransform();
const eps = 0.1;
var State = { "NONE": 0, "LEFT": 1, "RIGHT": 2 };
var currentState = State.None;
var x;


script.createEvent("UpdateEvent").bind(onUpdate);

function onUpdate() {
    if (script.head.getFacesCount() > 0) {
        x = headTransform.up.x;
        if (Math.abs(x) < eps) {
            if (currentState != State.NONE) {
                currentState = State.NONE;
                onCenter();
            }
        } else if (x < -script.threshold) {
            if (currentState != State.LEFT) {
                currentState = State.LEFT;
                onLeft();
            }
        } else if (x > script.threshold) {
            if (currentState != State.RIGHT) {
                currentState = State.RIGHT;
                onRight();
            }
        }
    } else {
        if (currentState != State.NONE) {
            currentState = State.NONE;
            onLost();
        }
    }
}

function onLeft() {
    print("LEFT!");
}

function onRight() {
    print("RIGHT!");
}

function onLost() {
    print("Head Lost")
}

function onCenter() {
    print("Back to center");
}

Please create head Binding and set it as an input of this script.

Best

Olha

Hi! I've updated script above to use threshold. Please tweak the value as needed. 

Let me know if that works!

Best

Olha

Hi, Balraj Bains! You are right! I've added a couple lines to the script above to support that, let me know if that works!

Also if you come up with more robust solution - feel free to share it with the community! 

Thanks!

Olha

Hi, GOWAAA!  Thank you! 

The UP vector is a normalized vector of a head transform that is pointing up 

In this case threshold setting represents an absolute value of |sinA| that corresponds to angle of approximately 11 degrees

You can easily modify script to make inputs more understandable :

//@input float angle {"widget" : "slider", "min" : 0, "max" : 90, "step" : 0.1}
script.threshold = Math.abs(Math.sin(script.angle / 180 * Math.PI))

BTW this asset is available on the Asset Library now!

Best

Olha