New Gyroscope Controls in Unity 4?

Questions & Answers
1

WHY UNITY WHY? I had just got this script for a gyroscope controlled main camera online, and it was working well. Maybe .1 second lag with the gyroscope, but it was working. I had just made a few edits, otherwise it was the original. When I used the same script in a different, the gyroscope is basically messed up. It flipped the game 90 degrees, and when I tilt it upwards, it moves the camera left. When I tilt it downwards, it goes right. When I move it right, it goes up, and vice versa. Any help would be really really greatly appreciated. I’m stumped, the only change I’ve made is upgraded to unity 4, maybe that could have something to do with it? Thanks,

Here is the script by the way:

// iPhone gyroscope-controlled camera demo v0.3 8/8/11
// Perry Hoberman <hoberman@bway.net>
// Directions: Attach this script to main camera.
// Note: Unity Remote does not currently support gyroscope. 

private var gyroBool : boolean;
private var gyro : Gyroscope;
private var rotFix : Quaternion;

function Start() {
	
	var originalParent = transform.parent; // check if this transform has a parent
	var camParent = new GameObject ("camParent"); // make a new parent
	camParent.transform.position = transform.position; // move the new parent to this transform position
	transform.parent = camParent.transform; // make this transform a child of the new parent
	camParent.transform.parent = originalParent; // make the new parent a child of the original parent
	
	gyroBool = Input.isGyroAvailable;
	
	if (gyroBool) {
		
		gyro = Input.gyro;
		gyro.enabled = true;
		
		if (Screen.orientation == ScreenOrientation.LandscapeLeft) {
			camParent.transform.eulerAngles = Vector3(90,90,0);
		} else if (Screen.orientation == ScreenOrientation.Portrait) {
			camParent.transform.eulerAngles = Vector3(90,180,0);
		}
		
		if (Screen.orientation == ScreenOrientation.LandscapeLeft) {
			rotFix = Quaternion(0,0,0.7071,0.7071);
		} else if (Screen.orientation == ScreenOrientation.Portrait) {
			rotFix = Quaternion(0,0,1,0);
		}
		//Screen.sleepTimeout = 0;
	} else {
		print("NO GYRO");
	}
}

function Update () {
Invoke ("Rotate", 12.8);
}

function Rotate () {
	if (gyroBool) {
		var camRot : Quaternion = gyro.attitude * rotFix;
		transform.localRotation = camRot;
	}
}
2

Once the gyro is returning good data do this once to figure out the initial rotation

    inverseInitialRotation = Quaternion.Inverse(Input.gyro.attitude);

Then every frame after that

    Quaternion deltaQ = Input.gyro.attitude * inverseInitialRotation;
    transform.localRotation = Quaternion.Euler(-deltaQ.eulerAngles.y, -deltaQ.eulerAngles.z, deltaQ.eulerAngles.x);

You may have to swap the euler values differently depending on your camera’s orientation in the scene.

3

What worked for me (tested on iPhone 6 with Unity 5.2):

Quaternion rotFix1 = Quaternion.Euler(90, 90, 0);
Quaternion rotFix2 = Quaternion.Euler(0, 0, 180);
camera.localRotation = rotFix1 * Input.gyro.attitude * rotFix2;