Reorganised the redstone simulator

-> Many thanks to @worktycho for the idea, and @Haxi52 for the implementation plan!
* Uses classes and inheritance now
* Speed should be improved

src/Simulator/IncrementalRedstoneSimulator/DropSpenserHandler.h

@@ -0,0 +1,69 @@
+
+#pragma once
+
+#include "RedstoneHandler.h"
+#include "BlockEntities/DropSpenserEntity.h"
+
+
+
+
+
+class cDropSpenserHandler : public cRedstoneHandler
+{
+	typedef cRedstoneHandler super;
+public:
+
+	cDropSpenserHandler(cWorld & a_World) :
+		super(a_World)
+	{
+	}
+
+	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	{
+		UNUSED(a_Position);
+		UNUSED(a_BlockType);
+		UNUSED(a_Meta);
+		UNUSED(a_QueryPosition);
+		UNUSED(a_QueryBlockType);
+		return 0;
+	}
+
+	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	{
+		UNUSED(a_Position);
+		UNUSED(a_BlockType);
+		UNUSED(a_Meta);
+		return 0;
+	}
+
+	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	{
+		LOGD("Evaluating spencer the dropspenser (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
+
+		if (a_PoweringData.PowerLevel > 0)
+		{
+			class cSetPowerToDropSpenser :
+				public cDropSpenserCallback
+			{
+			public:
+				virtual bool Item(cDropSpenserEntity * a_DropSpenser) override
+				{
+					a_DropSpenser->Activate();
+					return false;
+				}
+			} DrSpSP;
+
+			m_World.DoWithDropSpenserAt(a_Position.x, a_Position.y, a_Position.z, DrSpSP);
+		}
+
+		return {};
+	}
+
+	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	{
+		UNUSED(a_BlockType);
+		UNUSED(a_Meta);
+
+		return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());
+	}
+};