using UnityEngine;
using System.Collections;

//use an animation curve to rotate an object on its Y axis
//someday will mod to include an axis selection

public class CurveRotate : MonoBehaviour {
	public AnimationCurve rotateCurve;	//curve to use for the angle (usually keeping the range 0-1 on both axis)
	public float offset; 				//offset angle (start angle)
	public float rotateAmount;			//degrees to rotate
	public float rotateRate;			//speed to go thru the rotation 1=1s, 0.5=2s, 2=0.5s
	public float curvePos;				//use if you want to start at a different point on the curve 0-1, so 0.5 is halfway
	public bool loop=true;				//should we keep looping?
	Vector3 eul;						//this stores your rotation: Note right now it would make your angles x & z=0

	void Start () {
		eul=Vector3.zero;
	}
	

	void Update () {
		if (curvePos!=1||loop){
			curvePos+=rotateRate*Time.deltaTime;
			if (curvePos>1f&&loop){curvePos=curvePos-1f;}
			else if (curvePos>1f&&!loop){curvePos=1f;}
			
			eul.y=offset+rotateAmount*rotateCurve.Evaluate(curvePos);
			transform.localEulerAngles=eul;
		}
	}
}