up version to 0.3.5

package.json

@@ -8,7 +8,7 @@
     "displayName": "DragonECS-Graphs",
     "description": "Entity Graphs for DragonECS",
     "unity": "2020.3",
-    "version": "0.3.3",
+    "version": "0.3.5",
     "repository": {
         "type": "git",
         "url": "https://github.com/DCFApixels/DragonECS-Graphs.git"

src/Builtin/EcsGraphWorld.cs

@@ -7,13 +7,13 @@ namespace DCFApixels.DragonECS
     [MetaGroup(EcsConsts.PACK_GROUP, EcsConsts.WORLDS_GROUP)]
     [MetaDescription(EcsConsts.AUTHOR, "Inherits EcsWorld without extending its functionality and is used for specific injections. Can be used as argument to EcsWorld.CreateGraph(new " + nameof(EcsGraphWorld) + "()) and to store relation entity.")]
     [DebuggerTypeProxy(typeof(DebuggerProxy))]
-    [MetaID("ECC4CF479301897718600925B00A7DB4")]
+    [MetaID("DragonECS_ECC4CF479301897718600925B00A7DB4")]
     public sealed class EcsGraphWorld : EcsWorld, IInjectionUnit, IInjectionBlock
     {
-        public EcsGraphWorld() : base() { }
-        public EcsGraphWorld(EcsWorldConfig config = null, string name = null, short worldID = -1) : base(config, name == null ? "Default" : name, worldID) { }
-        public EcsGraphWorld(IConfigContainer configs, string name = null, short worldID = -1) : base(configs, name == null ? "Default" : name, worldID) { }
-
+        private const string DEFAULT_NAME = "Graph";
+        public EcsGraphWorld() : base(default(EcsWorldConfig), DEFAULT_NAME) { }
+        public EcsGraphWorld(EcsWorldConfig config = null, string name = null, short worldID = -1) : base(config, name == null ? DEFAULT_NAME : name, worldID) { }
+        public EcsGraphWorld(IConfigContainer configs, string name = null, short worldID = -1) : base(configs, name == null ? DEFAULT_NAME : name, worldID) { }
         void IInjectionUnit.InitInjectionNode(InjectionGraph nodes)
         {
             nodes.AddNode(this);

src/EntityGraph.cs

@@ -88,11 +88,29 @@ namespace DCFApixels.DragonECS
         {
             if (_matrix.TryGetValue(startEntityID, endEntityID, out int relEntityID))
             {
+#if DEBUG && DRAGONECS_DEEP_DEBUG
+                if(_graphWorld.IsUsed(relEntityID) == false)
+                {
+                    throw new InvalidOperationException();
+                }
+                var (s, e) = GetRelationStartEnd(relEntityID);
+                if (s != startEntityID || e != endEntityID)
+                {
+                    throw new InvalidOperationException();
+                }
+#endif
                 return relEntityID;
             }
             return NewRelationInternal(startEntityID, endEntityID);
         }
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public int GetOrNewRelationNoDirection(int entityID, int otherEntityID)
+        {
+            return GetOrNewRelation(
+                entityID < otherEntityID ? entityID : otherEntityID,
+                entityID > otherEntityID ? entityID : otherEntityID);
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public int GetOrNewInverseRelation(int relEntityID)
         {
 #if DEBUG || !DISABLE_DRAGONECS_ASSERT_CHEKS
@@ -106,6 +124,15 @@ namespace DCFApixels.DragonECS
         private int NewRelationInternal(int startEntityID, int endEntityID)
         {
             int relEntityID = _graphWorld.NewEntity();
+
+#if DEBUG && DRAGONECS_DEEP_DEBUG
+            var (s, e) = GetRelationStartEnd(relEntityID);
+            if (s != 0 || e != 0)
+            {
+                throw new InvalidOperationException();
+            }
+#endif
+
             _matrix.Add(startEntityID, endEntityID, relEntityID);
             _relEntityInfos[relEntityID] = new RelationInfo(startEntityID, endEntityID);
             _count++;

src/Executors/GraphQueries.cs

@@ -1,6 +1,7 @@
 #if DISABLE_DEBUG
 #undef DEBUG
 #endif
+using DCFApixels.DragonECS.Core;
 using DCFApixels.DragonECS.Graphs.Internal;
 
 namespace DCFApixels.DragonECS