TrafficRoad/Assets/BuildSystem/Scripts/PlaceSwitch.cs

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

namespace BuildSystem
{
    public class PlaceSwitch : MonoBehaviour
    {
        public Button btn;
        public GameObject flag;
        public GameObject placePanel;
        bool state = false;

        private void Awake()
        {
            btn.onClick.AddListener(() =>
            {
                state = !state;
                if (state)
                {
                    BuildSystemManager.Instance.isCanPlace = true;
                    flag.SetActive(true);
                    placePanel.SetActive(true);
                    btn.transform.DOLocalMoveX(50, 0.2f);
                }
                else
                {
                    if (BuildSystemManager.Instance.placeObj)
                    {
                        Destroy(BuildSystemManager.Instance.placeObj.gameObject);
                    }
                    BuildSystemManager.Instance.isCanPlace = false;
                    flag.SetActive(false);
                    placePanel.SetActive(false);
                    btn.transform.DOLocalMoveX(-50, 0.2f);
                }
            });
        }

    }
}