-registering same system multiple times only replace pointer for callback

-added export attributes (required by windows to make DLL library, not work at now due to DMD bugs)
-interface D files to import

import/ecs/ecs.di

@@ -0,0 +1,112 @@
+// D import file generated from 'source\ecs\ecs.d'
+module ecs.ecs;
+import std.stdio;
+version (Design)
+{
+	alias SytemFuncType = void function(ref SystemCallData data, void* componentsStart);
+	struct HasComponentsStore
+	{
+		ulong[4] bits;
+		bool has(HasComponentsStore components);
+		bool notIn(HasComponentsStore components);
+		int length();
+	}
+	struct ComponentInfo
+	{
+		int size;
+		int aligment;
+		SerializeJSON funsSerJ;
+		SerializeBiN funcSerB;
+	}
+	struct System
+	{
+		HasComponentsStore requiredComponents;
+		HasComponentsStore absenComponents;
+		HasComponentsStore maybeComponents;
+		bool enabled;
+		int priority;
+		SytemFuncType func;
+	}
+	struct SystemCallData
+	{
+		System* system;
+		int[] componentsDt;
+	}
+	struct EntityTypeData
+	{
+		HasComponentsStore components;
+		int[] deltas;
+		int totalSize;
+		int totalAligment = 8;
+		SystemCallData[] systems;
+	}
+	struct EntitiesBlock
+	{
+		EntityTypeData* typeData;
+		Entity* freeEntitySlot;
+		EntitiesBlock* nextBlock;
+	}
+	struct EntityID
+	{
+		ulong id = (ulong).max;
+		static immutable notUsedValue = EntityID((ulong).max);
+	}
+	struct Entity
+	{
+		EntityID entityID = EntityID.notUsedValue;
+		union
+		{
+			string name;
+			Entity* nextFreeSlot;
+		}
+		uint group;
+		EntityID entityID;
+	}
+	struct Template
+	{
+		HasComponentsStore hasComp;
+		Entity* entity;
+	}
+	struct Manager
+	{
+		EntityAllocator entityArrayAllcoator;
+		ComponentInfo[] components;
+		System[] systems;
+		HashMap!(HasComponentsStore, EntitiesBlock*) entitiesDatas;
+		HashMapTwoWays!(string, Entity*) nameMap;
+		HashMapTwoWays!(EntityID, Entity*) idMap;
+		EntitiesBlock* getEntitiesBlock(HasComponentsStore hasComponents);
+		EntitiesBlock* addNewBlock(HasComponentsStore hasComponents, EntitiesBlock* firstBlock);
+		void alignNum(ref int num, int aligment);
+		EntityTypeData* newEntityTypeData(HasComponentsStore hasComponents);
+		void addEntity(Template* templ);
+		void addSystem(Func)(int priority)
+		{
+			HasComponentsStore requiredComponents;
+			HasComponentsStore absenComponents;
+			HasComponentsStore maybeComponents;
+			void systemCaller(ref SystemCallData data, void* componentsStart);
+			System* system = new System(&systemCaller, entTypeData);
+			systems ~= system;
+			foreach (ref entTypeData; entitiesDatas)
+			{
+				if (!entTypeData.hasComp.has(requiredComponents) || !entTypeData.hasComp.notIn(absenComponents))
+				{
+					continue;
+				}
+				entTypeData.systems ~= system;
+			}
+		}
+	}
+	void someSystem(CompA a, CompB b, CompC* c);
+	void main();
+	class System
+	{
+		void start();
+		void end();
+		void update(ref ObjRend a);
+		void useEvent(EventData evvv, ref ObjRend a);
+	}
+	alias SerializeVector = ubyte[];
+	__gshared EntityManager gEntityManager;
+}