using UnityEngine;
using System.Collections;

public class MyMouseOrbit : MonoBehaviour {

	public Transform target;
    public float distance;

    public float xSpeed;
    public float ySpeed;

    public int yMinLimit;
    public int yMaxLimit;

    private float x = 0.0f;
    private float y = 0.0f;

    public void Start () {
        var angles = transform.eulerAngles;
        x = angles.y;
        y = angles.x;

	    // Make the rigid body not change rotation
   	    if (rigidbody)
		    rigidbody.freezeRotation = true;
    }

    public void LateUpdate () {
        if (target) {
            x += Input.GetAxis("Mouse X") * xSpeed * 0.02f;
            y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02f;
 		
 		    y = ClampAngle(y, yMinLimit, yMaxLimit);

            MyQuaternion rotation = MyQuaternion.Euler(y, x, 0.0f);
            Vector3 position = rotation * new Vector3(0.0f, 0.0f, -distance) + target.position;

            transform.rotation.Set(rotation.X,rotation.Y,rotation.Z,rotation.W);
            transform.position = position;
        }
    }

    public static float ClampAngle (float angle,float min,float max) {
	    if (angle < -360)
		    angle += 360;
	    if (angle > 360)
		    angle -= 360;
	    return Mathf.Clamp (angle, min, max);
    }
}