add SomeMessageWithEntity method to Engine

encompass-cs/Collections/MessageStore.cs

@@ -53,6 +53,11 @@ namespace Encompass
             return Lookup<TMessage>().WithEntity(entityID);
         }
 
+        public bool SomeWithEntity<TMessage>(int entityID) where TMessage : struct, IMessage, IHasEntity
+        {
+            return Lookup<TMessage>().SomeWithEntity(entityID);
+        }
+
         public void ProcessDelayedMessages(double dilatedDelta, double realtimeDelta)
         {
             foreach (var store in Stores.Values)

encompass-cs/Collections/TypedMessageStore.cs

@@ -93,6 +93,11 @@ namespace Encompass
             return entityToMessage.ContainsKey(entityID) ? entityToMessage[entityID] : System.Linq.Enumerable.Empty<TMessage>();
         }
 
+        public bool SomeWithEntity(int entityID)
+        {
+            return entityToMessage.ContainsKey(entityID) && entityToMessage[entityID].Count > 0;
+        }
+
         public override void Clear()
         {
             store.Clear();

encompass-cs/Engine.cs

@@ -658,6 +658,11 @@ namespace Encompass
             return messageManager.WithEntity<TMessage>(entity.ID);
         }
 
+        protected bool SomeMessageWithEntity<TMessage>(Entity entity) where TMessage : struct, IMessage, IHasEntity
+        {
+            return messageManager.SomeWithEntity<TMessage>(entity.ID);
+        }
+
         internal void CheckAndUpdateTracking(int entityID)
         {
             if (_trackedEntities.Contains(entityID) && !entityQuery.CheckEntity(entityID, componentManager.ExistingBits))

encompass-cs/MessageManager.cs

@@ -56,5 +56,10 @@ namespace Encompass
         {
             return messageStore.WithEntity<TMessage>(entityID);
         }
+
+        internal bool SomeWithEntity<TMessage>(int entityID) where TMessage : struct, IMessage, IHasEntity
+        {
+            return messageStore.SomeWithEntity<TMessage>(entityID);
+        }
     }
 }