-fixed getSystem function

source/ecs/entity.d

@@ -6,6 +6,11 @@ struct EntityID
 {
     uint id;
     uint counter;
+
+    /*int opCmp(ref const EntityID s) const 
+    {
+        return id < s.id;
+    }*/
 }
 
 struct Entity

source/ecs/manager.d

@@ -368,7 +368,7 @@ class EntityManager
 
     Sys* getSystem(Sys)()
     {
-        return cast(Sys*) systems[Sys.system_id].system_pointer;
+        return cast(Sys*) systems[Sys.system_id].m_system_pointer;
     }
 
     void registerComponent(Comp)()