///////////////////////////////////////////////////////////////////////////
//  IKHelperTool                                                         //
//  Kevin Iglesias - https://www.keviniglesias.com/     			     //
//  Contact Support: support@keviniglesias.com                           //
///////////////////////////////////////////////////////////////////////////

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace KevinIglesias {
    
    public enum IKHelperHand {LeftHand = 0, RightHand = 1};
    
	public class IKHelperTool : MonoBehaviour
	{
		public Transform iKSwitch;
        public Transform handEffector;
        
        public IKHelperHand hand;
        
		private Animator animator;
		private float weight;

		void Awake()
		{
			animator = GetComponent<Animator>();
			weight = 0f;
		}

		void Update()
		{
            weight = Mathf.Lerp(0, 1, 1f - Mathf.Cos(iKSwitch.localPosition.y * Mathf.PI * 0.5f));
		}
		
		void OnAnimatorIK(int layerIndex)
		{
            if(hand == IKHelperHand.LeftHand)
            {
                animator.SetIKPositionWeight(AvatarIKGoal.LeftHand, weight);
                animator.SetIKPosition(AvatarIKGoal.LeftHand, handEffector.position);
                
                animator.SetIKRotationWeight(AvatarIKGoal.LeftHand, weight);
                animator.SetIKRotation(AvatarIKGoal.LeftHand, handEffector.rotation);
            }else{
                animator.SetIKPositionWeight(AvatarIKGoal.RightHand, weight);
                animator.SetIKPosition(AvatarIKGoal.RightHand, handEffector.position);
                
                animator.SetIKRotationWeight(AvatarIKGoal.RightHand, weight);
                animator.SetIKRotation(AvatarIKGoal.RightHand, handEffector.rotation);
            }
		}
	}
}