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

[RequireComponent(typeof(Animator))]


public class ArmMovement : MonoBehaviour
{
    protected Animator animator;

    public bool ikActive = false;
    public Transform rightHandObj = null;
    public Transform lookObj = null;
    bool canpickup;

    void Start()
    {
        canpickup = false;
        animator = GetComponent<Animator>();
        
    }

    //a callback for calculating IK
    void OnAnimatorIK()
    {
        if (animator)
        {

            //if the IK is active, set the position and rotation directly to the goal. 
            if (ikActive)
            {
                print(lookObj);

                // Set the look target position, if one has been assigned
               if (lookObj != null)
                {
                    animator.SetLookAtWeight(1);
                    animator.SetLookAtPosition(lookObj.position);
                }

                // Set the right hand target position and rotation, if one has been assigned
                if (canpickup == true)
                {
                        if (rightHandObj != null)
                        
                        {
                        print("pick up my hand");
                            animator.SetIKPositionWeight(AvatarIKGoal.RightHand, 1);
                            animator.SetIKRotationWeight(AvatarIKGoal.RightHand, 1);
                            animator.SetIKPosition(AvatarIKGoal.RightHand, rightHandObj.position);
                            animator.SetIKRotation(AvatarIKGoal.RightHand, rightHandObj.rotation);
                         
                    }
                }
            }

            //if the IK is not active, set the position and rotation of the hand and head back to the original position
            else
            {
                animator.SetIKPositionWeight(AvatarIKGoal.RightHand, 0);
                animator.SetIKRotationWeight(AvatarIKGoal.RightHand, 0);
                animator.SetLookAtWeight(0);
            }
        }
    }

    private void OnTriggerEnter(Collider other) // to see when the player enters the collider
    {
        print("Collided with " + other.gameObject.tag);
        if (other.gameObject.tag == "Book") //on the object you want to pick up set the tag to be anything, in this case "book"
        {
            canpickup = true;  //set the pick up bool to true
        }
    }
}