Added Unity project files

Packages/com.vrchat.worlds/Integrations/ClientSim/Runtime/Utilities/ClientSimObjectCollection.cs

@@ -0,0 +1,94 @@
+using System.Collections.Generic;
+
+namespace VRC.SDK3.ClientSim
+{
+    /// <summary>
+    /// This class is for holding a container of objects that can be deleted at any time.
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    public class ClientSimObjectCollection<T>
+    {
+        private bool _shouldVerifyObjectList;
+        private readonly Queue<T> _toBeAdded = new Queue<T>();
+        private readonly Queue<T> _toBeRemoved = new Queue<T>();
+        private List<T> _allObjects = new List<T>();
+
+        public void AddObject(T obj)
+        {
+            if (obj == null)
+            {
+                return;
+            }
+            _toBeAdded.Enqueue(obj);
+        }
+
+        public void RemoveObject(T obj)
+        {
+            _shouldVerifyObjectList = true;
+            _toBeRemoved.Enqueue(obj);
+        }
+
+        public void ShouldVerifyObjects()
+        {
+            _shouldVerifyObjectList = true;
+        }
+
+        public void ProcessAddedAndRemovedObjects()
+        {
+            if (_toBeAdded.Count > 0)
+            {
+                foreach (var objs in _toBeAdded)
+                {
+                    if (objs == null)
+                    {
+                        _shouldVerifyObjectList = true;
+                        continue;
+                    }
+                    _allObjects.Add(objs);
+                }
+                _toBeAdded.Clear();
+            }
+            if (_toBeRemoved.Count > 0)
+            {
+                foreach (var objs in _toBeRemoved)
+                {
+                    if (objs == null)
+                    {
+                        _shouldVerifyObjectList = true;
+                        continue;
+                    }
+                    _allObjects.Remove(objs);
+                }
+                _toBeRemoved.Clear();
+            }
+
+            if (_shouldVerifyObjectList)
+            {
+                List<T> allObjs = new List<T>();
+                foreach (var objs in _allObjects)
+                {
+                    if (objs == null)
+                    {
+                        continue;
+                    }
+                    allObjs.Add(objs);
+                }
+
+                _allObjects = allObjs;
+            }
+        }
+
+        public IEnumerable<T> GetObjects()
+        {
+            foreach (var obj in _allObjects)
+            {
+                if (obj == null)
+                {
+                    continue;
+                }
+
+                yield return obj;
+            }
+        }
+    }
+}