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/RedstoneTorchHandler.h

@@ -0,0 +1,99 @@
+
+#pragma once
+
+#include "RedstoneHandler.h"
+
+
+
+
+
+class cRedstoneTorchHandler : public cRedstoneHandler
+{
+public:
+
+	cRedstoneTorchHandler(cWorld & a_World) :
+		cRedstoneHandler(a_World)
+	{
+	}
+
+	inline static bool IsOn(BLOCKTYPE a_Block)
+	{
+		return (a_Block == E_BLOCK_REDSTONE_TORCH_ON);
+	}
+
+	inline static const Vector3i GetOffsetAttachedTo(const Vector3i & a_Position, NIBBLETYPE a_Meta)
+	{
+		switch (a_Meta)
+		{
+			case E_META_TORCH_FLOOR: return { 0, -1, 0 };
+			case E_META_TORCH_EAST: return { -1, 0, 0 };
+			case E_META_TORCH_WEST: return { 1, 0, 0 };
+			case E_META_TORCH_NORTH: return { 0, 0, 1 };
+			case E_META_TORCH_SOUTH: return { 0, 0, -1 };
+			default:
+			{
+				ASSERT(!"Unhandled torch metadata");
+				return { 0, 0, 0 };
+			}
+		}
+	}
+
+	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	{
+		if (
+			IsOn(a_BlockType) &&
+			(a_QueryPosition != (a_Position + GetOffsetAttachedTo(a_Position, a_Meta))) &&
+			(cIncrementalRedstoneSimulator::IsMechanism(a_QueryBlockType) || (cBlockInfo::FullyOccupiesVoxel(a_QueryBlockType) && (a_QueryPosition == (a_Position + OffsetYP()))))
+		)
+		{
+			return 15;
+		}
+		return 0;
+	}
+
+	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	{
+		return IsOn(a_BlockType) ? 15 : 0;
+	}
+
+	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	{
+		LOGD("Evaluating torchy the redstone torch (%i %i %i)", a_Position.x, a_Position.y, a_Position.z);
+
+		auto Data = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData();
+		auto DelayInfo = Data->GetMechanismDelayInfo(a_Position);
+
+		if (DelayInfo == nullptr)
+		{
+			bool ShouldBeOn = (a_PoweringData.PowerLevel == 0);
+			if (ShouldBeOn != IsOn(a_BlockType))
+			{
+				Data->m_MechanismDelays[a_Position] = std::make_pair(1, ShouldBeOn);
+			}
+		}
+		else
+		{
+			int DelayTicks;
+			bool ShouldPowerOn;
+			std::tie(DelayTicks, ShouldPowerOn) = *DelayInfo;
+
+			if (DelayTicks == 0)
+			{
+				m_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, ShouldPowerOn ? E_BLOCK_REDSTONE_TORCH_ON : E_BLOCK_REDSTONE_TORCH_OFF, a_Meta);
+				Data->m_MechanismDelays.erase(a_Position);
+
+				cVector3iArray RelativePositions = GetRelativeAdjacents();
+				RelativePositions.erase(std::remove(RelativePositions.begin(), RelativePositions.end(), GetOffsetAttachedTo(a_Position, a_Meta)), RelativePositions.end());
+				return GetAdjustedRelatives(a_Position, RelativePositions);
+			}
+		}
+
+		return {};
+	}
+
+	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	{
+		UNUSED(a_BlockType);
+		return { (a_Position + GetOffsetAttachedTo(a_Position, a_Meta)) };
+	}
+};