Constrain mouse look x-axis rotation

Scripting
1

Hey there,

in the mouse look script it says

But where (and how) do I set those values in the script?

[AddComponentMenu("Camera-Control/Mouse Look")]
public class MouseLook : MonoBehaviour {

	public enum RotationAxes { MouseXAndY = 0, MouseX = 1, MouseY = 2 }
	public RotationAxes axes = RotationAxes.MouseXAndY;
	public float sensitivityX = 15F;
	public float sensitivityY = 15F;

	public float minimumX = -60F;
	public float maximumX = 60F;

	public float minimumY = -60F;
	public float maximumY = 60F;

	public float offsetY = 0F;

	float rotationX = 0F;
	GameObject cmra = null;

	public float rotationY = 0F;
	
	Quaternion originalRotation;

	void Update ()
	{
		if (axes == RotationAxes.MouseXAndY)
		{
			// Read the mouse input axis
			rotationX += Input.GetAxis("Mouse X") * sensitivityX/60*cmra.camera.fieldOfView;
			rotationY += (Input.GetAxis("Mouse Y") * sensitivityY/60*cmra.camera.fieldOfView + offsetY);

			rotationX = ClampAngle (rotationX, minimumX, maximumX);
			rotationY = ClampAngle (rotationY, minimumY, maximumY);
			
			Quaternion xQuaternion = Quaternion.AngleAxis (rotationX, Vector3.up);
			Quaternion yQuaternion = Quaternion.AngleAxis (rotationY, Vector3.left);
			
			transform.localRotation = originalRotation * xQuaternion * yQuaternion;
		}
		else if (axes == RotationAxes.MouseX)
		{
			rotationX += Input.GetAxis("Mouse X") * sensitivityX;
			rotationX = ClampAngle (rotationX, minimumX, maximumX);

			Quaternion xQuaternion = Quaternion.AngleAxis (rotationX, Vector3.up);
			transform.localRotation = originalRotation * xQuaternion;
		}
		else
		{
			rotationY += Input.GetAxis("Mouse Y") * sensitivityY + offsetY;
			rotationY = ClampAngle (rotationY, minimumY, maximumY);

			Quaternion yQuaternion = Quaternion.AngleAxis (rotationY, Vector3.left);
			transform.localRotation = originalRotation * yQuaternion;
		}
		offsetY = 0F;
	}
	
	void Start ()
	{
		cmra = GameObject.FindWithTag("MainCamera");
		// Make the rigid body not change rotation
		if (rigidbody)
			rigidbody.freezeRotation = true;
		originalRotation = transform.localRotation;
	}
	
	public static float ClampAngle (float angle, float min, float max)
	{
		if (angle < -360F)
			angle += 360F;
		if (angle > 360F)
			angle -= 360F;
		return Mathf.Clamp (angle, min, max);
	}
}

Thanks very much in advance,

Carnivore

2

I’m going to take a stab at:

public float minimumX = -60F;
public float maximumX = 60F;

public float minimumY = -60F;
public float maximumY = 60F;
3

I allready tried that (as you can see on the numbers, in the original script the public float minimumX and maximumX were -360 and 360). On the y-axis the camera rotation is constrained, but I’m still able to look around in 360 degrees.

Any other idea?

Thanks and cheers,

Carnivore

4

Maybe you can reduce the angles in “ClampAngle” (or have a “ClampAngleX” version just when calculating horizontal changes). That might work.

5

As far as I understand the original script that comes with Unity doesn’t constrain the x rotation at all.
Here’s a script that constrains the x rotation too.

[AddComponentMenu("Camera-Control/Mouse Look")]
public class MouseLook : MonoBehaviour {

	public enum RotationAxes { MouseXAndY = 0, MouseX = 1, MouseY = 2 }
	public RotationAxes axes = RotationAxes.MouseXAndY;
	public float sensitivityX = 15F;
	public float sensitivityY = 15F;

	public float minimumX = -90F;
	public float maximumX = 90F;

	public float minimumY = -60F;
	public float maximumY = 60F;

	float rotationY = 0F;
    float rotationX = 0F;

	void Update ()
	{
		if (axes == RotationAxes.MouseXAndY)
		{
            // Original code doesn't constrain x rotation
            //rotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * sensitivityX;

            // Constrain the x rotation the same way as the y rotation
            rotationX += Input.GetAxis("Mouse X") * sensitivityX;
            rotationX = Mathf.Clamp(rotationX, minimumX, maximumX);

			rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
			rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);

            transform.localEulerAngles = new Vector3(-rotationY, rotationX, 0);
		}
		else if (axes == RotationAxes.MouseX)
		{
            rotationX += Input.GetAxis("Mouse X") * sensitivityX;
            rotationX = Mathf.Clamp(rotationX, minimumX, maximumX);

            transform.localEulerAngles = new Vector3(0, rotationX, 0);
        }
		else
		{
			rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
			rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
			
			transform.localEulerAngles = new Vector3(-rotationY, transform.localEulerAngles.y, 0);
		}
	}
	
	void Start ()
	{
		// Make the rigid body not change rotation
		if (rigidbody)
			rigidbody.freezeRotation = true;
	}
}