Scriptum/Assets/Scripts/DoorBehaviour.cs

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

public class DoorBehaviour : MonoBehaviour
{
    public GameObject SaveController;

    [SerializeField]
    public Gateway gateway;

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    public void ScenetToMoveTo()
    {
        //saving info about used gate/door/teleport
        OnMapAppearanceMethod.Gateway = OnMapAppearanceMethodEnum.Gateway;

        PlayerPrefs.SetString("gateway.sourceMapName", gateway.currentMapName);
        PlayerPrefs.SetString("gateway.nextMapName", gateway.nextMapName);

        PlayerPrefs.SetFloat("gateway.respawnCoords.x", gateway.respawnCoords.x);
        PlayerPrefs.SetFloat("gateway.respawnCoords.y", gateway.respawnCoords.y);
        PlayerPrefs.SetFloat("gateway.respawnCoords.z", gateway.respawnCoords.z);

        // 1. Save all before change scene
        SaveController.GetComponent<SaveController>().SaveItems();
        SaveController.GetComponent<SaveController>().SaveQuests();
        SaveController.GetComponent<SaveController>().SaveInventory();
        SaveController.GetComponent<SaveController>().SaveHealth();
        // 2. Change scene
        SceneManager.LoadScene(gateway.nextMapName);
    }
}