Version: 2017.2
public float trueHeading ;

説明

地理的北極に基づく度単位の進行方向 (読み取り専用)

The value in this property is always measured relative to the top of the screen in its current orientation. Note, that if you want this property to contain a valid value, you must also enable location updates by calling Input.location.Start(). (Read Only)

function Update() {
        // Orient an object to point northward.
        transform.rotation = Quaternion.Euler(0, -Input.compass.trueHeading, 0);
    }