GameManager

using JeffreyStephens.Weapons;
using UnityEngine;

namespace JeffreyStephens.Game
{
    public class GameManager : MonoBehaviour
    {
        private static bool _applicationIsQuitting = false;
        private static GameManager _Instance;
        public static GameManager Instance
        {
            get
            {
                if ( _applicationIsQuitting ) return null;

                if ( _Instance == null )
                {
                    GameObject instanceGameObject = GameObject.Find ( "GameManager" );

                    if ( instanceGameObject == null )
                        instanceGameObject = new GameObject ( "GameManager", typeof ( GameManager ) );

                    if ( UnityEditor.EditorApplication.isPlaying )
                        DontDestroyOnLoad ( instanceGameObject );

                    _Instance = instanceGameObject.GetComponent<GameManager> ( );
                }
                return _Instance;
            }
        }


        [Header ( "GameManager Variables" )]
        public WeaponManager WeaponManager;
        // ------------------------------------------------------------------------------- Unity Functions
        void Awake ( )
        {
            if ( GameManager.Instance != this )
                Destroy ( this );
        }


        void OnDestroy ( )
        {
            _applicationIsQuitting = true;
        }
    }
}