Unity) [유니티 UI] 스크린좌표를 통한 캐릭터, UI 이동

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

public class Character : MonoBehaviour
{
    public RectTransform transformIcon;
    public RectTransform transformTarget;

    public Transform hpPoint;
    public UIHealthBar uiHealthBar;

    void Update()
    {
        Get_MouseInput();
        Update_Moving();
    }

    private void Get_MouseInput()
    {
        if (Input.GetMouseButtonUp(0))
        {
            Vector3 point = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,
           Input.mousePosition.y, -Camera.main.transform.position.z));
            this.transformTarget.position = point;           

            string message = point.ToString();
            Debug.Log(message);
        }

        this.AddHealthBar(this.uiHealthBar);
    }

    private void Update_Moving()
    {
        this.transformIcon.position = Vector3.Lerp(this.transformIcon.position, this.transformTarget.position, 0.02f);
    }

    Vector2 screenPoint;

    public void AddHealthBar(UIHealthBar uiHealthBar)
    {
        this.uiHealthBar = uiHealthBar;
        this.SetHealthBarLocation();
    }

    public void SetHealthBarLocation()
    {
        this.screenPoint = RectTransformUtility.WorldToScreenPoint(Camera.main, this.hpPoint.position);
        this.uiHealthBar.GetComponent<RectTransform>().position = this.screenPoint;
    }
}