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/SmallGateHandler.h

@@ -0,0 +1,56 @@
+
+#pragma once
+
+#include "RedstoneHandler.h"
+
+
+
+
+
+class cSmallGateHandler : public cRedstoneHandler
+{
+	typedef cRedstoneHandler super;
+public:
+
+	cSmallGateHandler(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 gateydory the fence gate/trapdoor (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
+
+		if (a_PoweringData != static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData))
+		{
+			m_World.SetBlockMeta(a_Position, (a_PoweringData.PowerLevel > 0) ? (a_Meta | 0x4) : (a_Meta & ~0x04));
+		}
+
+		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());;
+	}
+};