Add main mesh fixes

Assets/Asset Cleaner/Utils/AufCtx.cs

@@ -0,0 +1,37 @@
+using Leopotam.Ecs;
+
+namespace Asset_Cleaner {
+    static class AufCtx {
+        public static EcsWorld World;
+
+        public static EcsSystems UpdateGroup;
+        public static EcsSystems OnGuiGroup;
+
+        internal static bool InitStarted { get; private set; }
+        internal static bool Destroyed { get; private set; }
+
+        internal static void TryInitWorld() {
+            if (InitStarted) return;
+            InitStarted = true;
+
+            World = new EcsWorld();
+
+            (OnGuiGroup = new EcsSystems(World)
+                .Add(new SysWindowGui())).Init();
+
+            (UpdateGroup = new EcsSystems(World)
+                    .Add(new SysRepaintWindow())
+                    .Add(new SysUndoRedoSelection())
+                    .Add(new SysProcessSearch())
+                    .Add(new SysSceneCleanup())
+                ).Init();
+        }
+
+        internal static void DestroyWorld() {
+            if (!InitStarted) return;
+            InitStarted = false;
+            Destroyed = true;
+            Asr.IsFalse(__GlobalsCounter.HasAnyValue());
+        }
+    }
+}