1 files changed, 73 insertions, 0 deletions
diff --git a/Assets/Scripts/Core/Loader.cs b/Assets/Scripts/Core/Loader.cs
new file mode 100644
index 0000000..23cf216
--- /dev/null
+++ b/Assets/Scripts/Core/Loader.cs
@@ -0,0 +1,73 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+
+namespace Core
+{
+    public class Loader : MonoBehaviour
+    {
+        public static Loader Current;
+        
+        public List<LoadGroup> loadGroups;
+        public UnityEvent onLoaded;
+        
+        private bool _started;
+        
+        
+#if UNITY_EDITOR
+        [HideInInspector] public int objectCount;
+        [HideInInspector] public int loadedObjectCount;
+
+        private void OnGUI()
+        {
+            GUILayout.Label($"Loaded: {loadedObjectCount / objectCount * 100}% ({loadedObjectCount}/{objectCount})");
+        }
+#endif
+
+        private void Update()
+        {
+            if (!_started)
+                _started = true;
+        }
+
+        private void Awake()
+        {
+#if UNITY_EDITOR
+            foreach (var loadGroup in loadGroups)
+                objectCount += loadGroup.GameObjects.Count;
+#endif
+            if (Current == null)
+                Current = this;
+
+            StartCoroutine(Load());
+        }
+
+        private IEnumerator Load()
+        {
+            yield return new WaitUntil(() => _started);
+            foreach (var loadGroup in loadGroups)
+            {
+                if (loadGroups == null)
+                    continue;
+                foreach (var loadGroupGameObject in loadGroup.GameObjects)
+                {
+                    Instantiate(loadGroupGameObject);
+#if UNITY_EDITOR
+                    loadedObjectCount++;
+#endif
+                    yield return null;
+                }
+            }
+            onLoaded.Invoke();
+            Destroy(gameObject);
+        }
+
+        private void OnDestroy()
+        {
+            if (Current == this)
+                Current = null;
+        }
+    }
+}