// (c) Copyright HutongGames, LLC 2010-2016. All rights reserved.

using UnityEngine;

namespace HutongGames.PlayMaker.Actions
{
	[ActionCategory(ActionCategory.Vector2)]
	[Tooltip("Rotates a Vector2 direction from Current towards Target.")]
	public class Vector2RotateTowards : FsmStateAction
	{
		[RequiredField]
		[Tooltip("The current direction. This will be the result of the rotation as well.")]
		public FsmVector2 currentDirection;
		
		[RequiredField]
		[Tooltip("The direction to reach")]
		public FsmVector2 targetDirection;
		
		[RequiredField]
		[Tooltip("Rotation speed in degrees per second")]
		public FsmFloat rotateSpeed;
		
		
		private Vector3 current;
		private Vector3 target;
		
		public override void Reset()
		{
			currentDirection = new FsmVector2 { UseVariable = true };
			targetDirection = new FsmVector2 { UseVariable = true };
			rotateSpeed = 360;
		}
		
		public override void OnEnter()
		{
			current = new Vector3(currentDirection.Value.x,currentDirection.Value.y,0f);
			target = new Vector3(targetDirection.Value.x,targetDirection.Value.y,0f);
		}

		public override void OnUpdate()
		{
			current.x = currentDirection.Value.x;
			current.y = currentDirection.Value.y;
			
			current = Vector3.RotateTowards(current, target, 
				rotateSpeed.Value * Mathf.Deg2Rad * Time.deltaTime, 1000);
			
			currentDirection.Value = new Vector2(current.x, current.y);
			
		}
		
		
	}
}