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/CommandBlockHandler.h

@@ -0,0 +1,70 @@
+
+#pragma once
+
+#include "RedstoneHandler.h"
+#include "BlockEntities/CommandBlockEntity.h"
+
+
+
+
+
+class cCommandBlockHandler : public cRedstoneHandler
+{
+	typedef cRedstoneHandler super;
+public:
+
+	cCommandBlockHandler(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 commander the cmdblck (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
+
+		auto Previous = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData);
+		if ((Previous.PowerLevel != 0) || (a_PoweringData.PowerLevel == 0))
+		{
+			// If we're already powered or received an update of no power, don't activate
+			return {};
+		}
+
+		class cSetPowerToCommandBlock : public cCommandBlockCallback
+		{
+		public:
+			virtual bool Item(cCommandBlockEntity * a_CommandBlock) override
+			{
+				a_CommandBlock->Activate();
+				return false;
+			}
+		} CmdBlockSP;
+
+		m_World.DoWithCommandBlockAt(a_Position.x, a_Position.y, a_Position.z, CmdBlockSP);
+		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());;
+	}
+};