22 files changed, 264 insertions, 299 deletions

diff --git a/src/Simulator/IncrementalRedstoneSimulator/CommandBlockHandler.h b/src/Simulator/IncrementalRedstoneSimulator/CommandBlockHandler.h
index 3114e92c4..91fbe05ff 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/CommandBlockHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/CommandBlockHandler.h
@@ -13,13 +13,9 @@ 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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -28,19 +24,20 @@ public:
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		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
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const 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);
+		auto Previous = static_cast<cIncrementalRedstoneSimulator *>(a_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
@@ -57,12 +54,13 @@ public:
 			}
 		} CmdBlockSP;
 
-		m_World.DoWithCommandBlockAt(a_Position.x, a_Position.y, a_Position.z, CmdBlockSP);
+		a_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
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());;
diff --git a/src/Simulator/IncrementalRedstoneSimulator/DoorHandler.h b/src/Simulator/IncrementalRedstoneSimulator/DoorHandler.h
index 702c79fee..999454b56 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/DoorHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/DoorHandler.h
@@ -13,13 +13,9 @@ class cDoorHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cDoorHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -28,30 +24,32 @@ public:
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		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
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating dori the door (%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))
+		if (a_PoweringData != static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData))
 		{
-			cChunkInterface ChunkInterface(m_World.GetChunkMap());
+			cChunkInterface ChunkInterface(a_World.GetChunkMap());
 			cBlockDoorHandler::SetOpen(ChunkInterface, a_Position.x, a_Position.y, a_Position.z, (a_PoweringData.PowerLevel != 0));
-			m_World.BroadcastSoundParticleEffect(EffectID::SFX_RANDOM_WOODEN_DOOR_OPEN, a_Position.x, a_Position.y, a_Position.z, 0);
+			a_World.BroadcastSoundParticleEffect(EffectID::SFX_RANDOM_WOODEN_DOOR_OPEN, a_Position.x, a_Position.y, a_Position.z, 0);
 		}
 
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());;
diff --git a/src/Simulator/IncrementalRedstoneSimulator/DropSpenserHandler.h b/src/Simulator/IncrementalRedstoneSimulator/DropSpenserHandler.h
index 3c9952582..62b37eb1d 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/DropSpenserHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/DropSpenserHandler.h
@@ -13,11 +13,6 @@ class cDropSpenserHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cDropSpenserHandler(cWorld & a_World) :
-		super(a_World)
-	{
-	}
-
 	inline static bool IsActivated(NIBBLETYPE a_Meta)
 	{
 		return (a_Meta & E_META_DROPSPENSER_ACTIVATED) != 0;
@@ -34,8 +29,9 @@ public:
 		}
 	}
 
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -44,15 +40,16 @@ public:
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		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
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating spencer the dropspenser (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 		bool IsPoweredNow = (a_PoweringData.PowerLevel > 0);
@@ -70,20 +67,21 @@ public:
 				}
 			} DrSpSP;
 
-			m_World.DoWithDropSpenserAt(a_Position.x, a_Position.y, a_Position.z, DrSpSP);
+			a_World.DoWithDropSpenserAt(a_Position.x, a_Position.y, a_Position.z, DrSpSP);
 		}
 
 		// Update the internal dropspenser state if necessary
 		if (IsPoweredNow != WasPoweredPreviously)
 		{
-			m_World.SetBlockMeta(a_Position, SetActivationState(a_Meta, IsPoweredNow));
+			a_World.SetBlockMeta(a_Position, SetActivationState(a_Meta, IsPoweredNow));
 		}
 
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 
diff --git a/src/Simulator/IncrementalRedstoneSimulator/IncrementalRedstoneSimulator.cpp b/src/Simulator/IncrementalRedstoneSimulator/IncrementalRedstoneSimulator.cpp
index 0ca7afbf3..966ee28ca 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/IncrementalRedstoneSimulator.cpp
+++ b/src/Simulator/IncrementalRedstoneSimulator/IncrementalRedstoneSimulator.cpp
@@ -29,25 +29,48 @@
 
 
 
+const cRedstoneHandler * cIncrementalRedstoneSimulator::GetComponentHandler(BLOCKTYPE a_BlockType)
+{
+	struct sComponents:
+		public std::array<std::unique_ptr<cRedstoneHandler>, 256>
+	{
+		sComponents()
+		{
+			for (size_t i = 0; i != 256; ++i)
+			{
+				(*this)[i] = cIncrementalRedstoneSimulator::CreateComponent(static_cast<BLOCKTYPE>(i));
+			}
+		}
+	};
+
+
+	static sComponents Components;
+	return Components[a_BlockType].get();
+}
+
+
+
+
+
 
-std::unique_ptr<cRedstoneHandler> cIncrementalRedstoneSimulator::CreateComponent(cWorld & a_World, BLOCKTYPE a_BlockType, cIncrementalRedstoneSimulatorChunkData * a_Data)
+std::unique_ptr<cRedstoneHandler> cIncrementalRedstoneSimulator::CreateComponent(BLOCKTYPE a_BlockType)
 {
 	switch (a_BlockType)
 	{
 		case E_BLOCK_ACTIVATOR_RAIL:
 		case E_BLOCK_DETECTOR_RAIL:
-		case E_BLOCK_POWERED_RAIL: return cpp14::make_unique<cPoweredRailHandler>(a_World);
+		case E_BLOCK_POWERED_RAIL: return cpp14::make_unique<cPoweredRailHandler>();
 
 		case E_BLOCK_ACTIVE_COMPARATOR:
-		case E_BLOCK_INACTIVE_COMPARATOR: return cpp14::make_unique<cRedstoneComparatorHandler>(a_World);
+		case E_BLOCK_INACTIVE_COMPARATOR: return cpp14::make_unique<cRedstoneComparatorHandler>();
 
 		case E_BLOCK_DISPENSER:
-		case E_BLOCK_DROPPER: return cpp14::make_unique<cDropSpenserHandler>(a_World);
+		case E_BLOCK_DROPPER: return cpp14::make_unique<cDropSpenserHandler>();
 
 		case E_BLOCK_HEAVY_WEIGHTED_PRESSURE_PLATE:
 		case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE:
 		case E_BLOCK_STONE_PRESSURE_PLATE:
-		case E_BLOCK_WOODEN_PRESSURE_PLATE: return cpp14::make_unique<cPressurePlateHandler>(a_World);
+		case E_BLOCK_WOODEN_PRESSURE_PLATE: return cpp14::make_unique<cPressurePlateHandler>();
 
 		case E_BLOCK_ACACIA_FENCE_GATE:
 		case E_BLOCK_BIRCH_FENCE_GATE:
@@ -56,41 +79,41 @@ std::unique_ptr<cRedstoneHandler> cIncrementalRedstoneSimulator::CreateComponent
 		case E_BLOCK_IRON_TRAPDOOR:
 		case E_BLOCK_JUNGLE_FENCE_GATE:
 		case E_BLOCK_SPRUCE_FENCE_GATE:
-		case E_BLOCK_TRAPDOOR: return cpp14::make_unique<cSmallGateHandler>(a_World);
+		case E_BLOCK_TRAPDOOR: return cpp14::make_unique<cSmallGateHandler>();
 
 		case E_BLOCK_REDSTONE_LAMP_OFF:
-		case E_BLOCK_REDSTONE_LAMP_ON: return cpp14::make_unique<cRedstoneLampHandler>(a_World);
+		case E_BLOCK_REDSTONE_LAMP_ON: return cpp14::make_unique<cRedstoneLampHandler>();
 
 		case E_BLOCK_REDSTONE_REPEATER_OFF:
-		case E_BLOCK_REDSTONE_REPEATER_ON: return cpp14::make_unique<cRedstoneRepeaterHandler>(a_World);
+		case E_BLOCK_REDSTONE_REPEATER_ON: return cpp14::make_unique<cRedstoneRepeaterHandler>();
 
 		case E_BLOCK_REDSTONE_TORCH_OFF:
-		case E_BLOCK_REDSTONE_TORCH_ON: return cpp14::make_unique<cRedstoneTorchHandler>(a_World);
+		case E_BLOCK_REDSTONE_TORCH_ON: return cpp14::make_unique<cRedstoneTorchHandler>();
 
 		case E_BLOCK_PISTON:
-		case E_BLOCK_STICKY_PISTON: return cpp14::make_unique<cPistonHandler>(a_World);
+		case E_BLOCK_STICKY_PISTON: return cpp14::make_unique<cPistonHandler>();
 
 		case E_BLOCK_LEVER:
 		case E_BLOCK_STONE_BUTTON:
-		case E_BLOCK_WOODEN_BUTTON: return cpp14::make_unique<cRedstoneToggleHandler>(a_World);
-
-		case E_BLOCK_BLOCK_OF_REDSTONE: return cpp14::make_unique<cRedstoneBlockHandler>(a_World);
-		case E_BLOCK_COMMAND_BLOCK: return cpp14::make_unique<cCommandBlockHandler>(a_World);
-		case E_BLOCK_NOTE_BLOCK: return cpp14::make_unique<cNoteBlockHandler>(a_World);
-		case E_BLOCK_REDSTONE_WIRE: return cpp14::make_unique<cRedstoneWireHandler>(a_World);
-		case E_BLOCK_TNT: return cpp14::make_unique<cTNTHandler>(a_World);
-		case E_BLOCK_TRAPPED_CHEST: return cpp14::make_unique<cTrappedChestHandler>(a_World);
-		case E_BLOCK_TRIPWIRE_HOOK: return cpp14::make_unique<cTripwireHookHandler>(a_World);
+		case E_BLOCK_WOODEN_BUTTON: return cpp14::make_unique<cRedstoneToggleHandler>();
+
+		case E_BLOCK_BLOCK_OF_REDSTONE: return cpp14::make_unique<cRedstoneBlockHandler>();
+		case E_BLOCK_COMMAND_BLOCK: return cpp14::make_unique<cCommandBlockHandler>();
+		case E_BLOCK_NOTE_BLOCK: return cpp14::make_unique<cNoteBlockHandler>();
+		case E_BLOCK_REDSTONE_WIRE: return cpp14::make_unique<cRedstoneWireHandler>();
+		case E_BLOCK_TNT: return cpp14::make_unique<cTNTHandler>();
+		case E_BLOCK_TRAPPED_CHEST: return cpp14::make_unique<cTrappedChestHandler>();
+		case E_BLOCK_TRIPWIRE_HOOK: return cpp14::make_unique<cTripwireHookHandler>();
 		default:
 		{
 			if (cBlockDoorHandler::IsDoorBlockType(a_BlockType))
 			{
-				return cpp14::make_unique<cDoorHandler>(a_World);
+				return cpp14::make_unique<cDoorHandler>();
 			}
 
 			if (cBlockInfo::FullyOccupiesVoxel(a_BlockType))
 			{
-				return cpp14::make_unique<cSolidBlockHandler>(a_World);
+				return cpp14::make_unique<cSolidBlockHandler>();
 			}
 			return nullptr;
 		}
@@ -129,7 +152,7 @@ void cIncrementalRedstoneSimulator::Simulate(float a_dt)
 			continue;
 		}
 
-		auto CurrentHandler = cIncrementalRedstoneSimulator::CreateComponent(m_World, CurrentBlock, &m_Data);
+		auto CurrentHandler = GetComponentHandler(CurrentBlock);
 		if (CurrentHandler == nullptr)  // Block at CurrentPosition doesn't have a corresponding redstone handler
 		{
 			// Clean up cached PowerData for CurrentPosition
@@ -139,7 +162,7 @@ void cIncrementalRedstoneSimulator::Simulate(float a_dt)
 		}
 
 		cRedstoneHandler::PoweringData Power;
-		for (const auto & Location : CurrentHandler->GetValidSourcePositions(CurrentLocation, CurrentBlock, CurrentMeta))
+		for (const auto & Location : CurrentHandler->GetValidSourcePositions(m_World, CurrentLocation, CurrentBlock, CurrentMeta))
 		{
 			if (!cChunk::IsValidHeight(Location.y))
 			{
@@ -149,18 +172,18 @@ void cIncrementalRedstoneSimulator::Simulate(float a_dt)
 			NIBBLETYPE PotentialMeta;
 			m_World.GetBlockTypeMeta(Location.x, Location.y, Location.z, PotentialBlock, PotentialMeta);
 
-			auto PotentialSourceHandler = cIncrementalRedstoneSimulator::CreateComponent(m_World, PotentialBlock, &m_Data);
+			auto PotentialSourceHandler = GetComponentHandler(PotentialBlock);
 			if (PotentialSourceHandler == nullptr)
 			{
 				continue;
 			}
 
-			decltype(Power) PotentialPower(PotentialBlock, PotentialSourceHandler->GetPowerDeliveredToPosition(Location, PotentialBlock, PotentialMeta, CurrentLocation, CurrentBlock));
+			decltype(Power) PotentialPower(PotentialBlock, PotentialSourceHandler->GetPowerDeliveredToPosition(m_World, Location, PotentialBlock, PotentialMeta, CurrentLocation, CurrentBlock));
 			Power = std::max(Power, PotentialPower);
 		}
 
 		// Inform the handler to update
-		cVector3iArray Updates = CurrentHandler->Update(CurrentLocation, CurrentBlock, CurrentMeta, Power);
+		cVector3iArray Updates = CurrentHandler->Update(m_World, CurrentLocation, CurrentBlock, CurrentMeta, Power);
 		WorkQueue.insert(WorkQueue.end(), Updates.begin(), Updates.end());
 
 		if (IsAlwaysTicked(CurrentBlock))
diff --git a/src/Simulator/IncrementalRedstoneSimulator/IncrementalRedstoneSimulator.h b/src/Simulator/IncrementalRedstoneSimulator/IncrementalRedstoneSimulator.h
index 673d50e49..a869b3489 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/IncrementalRedstoneSimulator.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/IncrementalRedstoneSimulator.h
@@ -158,10 +158,13 @@ public:
 	}
 
 	cIncrementalRedstoneSimulatorChunkData * GetChunkData() { return &m_Data; }
-	static std::unique_ptr<cRedstoneHandler> CreateComponent(cWorld & a_World, BLOCKTYPE a_BlockType, cIncrementalRedstoneSimulatorChunkData * a_Data);
+
+	static const cRedstoneHandler * GetComponentHandler(BLOCKTYPE a_BlockType);
 
 private:
 
+	static std::unique_ptr<cRedstoneHandler> CreateComponent(BLOCKTYPE a_BlockType);
+
 	// oh yea its crazy time
 	cIncrementalRedstoneSimulatorChunkData m_Data;
 } ;
diff --git a/src/Simulator/IncrementalRedstoneSimulator/NoteBlockHandler.h b/src/Simulator/IncrementalRedstoneSimulator/NoteBlockHandler.h
index f2cbf7c81..add608654 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/NoteBlockHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/NoteBlockHandler.h
@@ -13,13 +13,10 @@ class cNoteBlockHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cNoteBlockHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
+		UNUSED(a_World);
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -28,19 +25,20 @@ public:
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		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
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating sparky the magical note block (%d %d %d) %i", a_Position.x, a_Position.y, a_Position.z, a_PoweringData.PowerLevel);
 
-		auto Previous = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData);
+		auto Previous = static_cast<cIncrementalRedstoneSimulator *>(a_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 make a sound
@@ -57,13 +55,14 @@ public:
 			}
 		} NoteBlockSP;
 
-		m_World.DoWithNoteBlockAt(a_Position.x, a_Position.y, a_Position.z, NoteBlockSP);
+		a_World.DoWithNoteBlockAt(a_Position.x, a_Position.y, a_Position.z, NoteBlockSP);
 
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());;
diff --git a/src/Simulator/IncrementalRedstoneSimulator/PistonHandler.h b/src/Simulator/IncrementalRedstoneSimulator/PistonHandler.h
index f82ebdf94..f41fad89d 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/PistonHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/PistonHandler.h
@@ -13,13 +13,9 @@ class cPistonHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cPistonHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -28,18 +24,19 @@ public:
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		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
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating pisty the piston (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
-		auto Data = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData();
+		auto Data = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData();
 		auto DelayInfo = Data->GetMechanismDelayInfo(a_Position);
 
 		// Delay is used here to prevent an infinite loop (#3168)
@@ -61,11 +58,11 @@ public:
 			{
 				if (ShouldBeExtended)
 				{
-					cBlockPistonHandler::ExtendPiston(a_Position, &m_World);
+					cBlockPistonHandler::ExtendPiston(a_Position, a_World);
 				}
 				else
 				{
-					cBlockPistonHandler::RetractPiston(a_Position, &m_World);
+					cBlockPistonHandler::RetractPiston(a_Position, a_World);
 				}
 
 				Data->m_MechanismDelays.erase(a_Position);
@@ -75,8 +72,9 @@ public:
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 
 		auto PositionsOffset = GetRelativeAdjacents();
diff --git a/src/Simulator/IncrementalRedstoneSimulator/PoweredRailHandler.h b/src/Simulator/IncrementalRedstoneSimulator/PoweredRailHandler.h
index e7d30bec3..0b18ae511 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/PoweredRailHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/PoweredRailHandler.h
@@ -12,12 +12,7 @@ class cPoweredRailHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cPoweredRailHandler(cWorld & a_World) :
-		super(a_World)
-	{
-	}
-
-	static const Vector3i GetPoweredRailAdjacentXZCoordinateOffset(NIBBLETYPE a_Meta)  // Not in cBlockRailHandler since specific to powered rails
+	static Vector3i GetPoweredRailAdjacentXZCoordinateOffset(NIBBLETYPE a_Meta)  // Not in cBlockRailHandler since specific to powered rails
 	{
 		switch (a_Meta & 0x7)
 		{
@@ -35,27 +30,27 @@ public:
 		}
 	}
 
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		UNUSED(a_QueryBlockType);
 
 		auto Offset = GetPoweredRailAdjacentXZCoordinateOffset(a_Meta);
 		if (((Offset + a_Position) == a_QueryPosition) || ((-Offset + a_Position) == a_QueryPosition))
 		{
-			auto Power = GetPowerLevel(a_Position, a_BlockType, a_Meta);
+			auto Power = GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta);
 			return (Power <= 7) ? 0 : --Power;
 		}
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
-		return static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
+		return static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating tracky the rail (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 
@@ -75,9 +70,9 @@ public:
 			case E_BLOCK_POWERED_RAIL:
 			{
 				auto Offset = GetPoweredRailAdjacentXZCoordinateOffset(a_Meta);
-				if (a_PoweringData != static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData))
+				if (a_PoweringData != static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData))
 				{
-					m_World.SetBlockMeta(a_Position, (a_PoweringData.PowerLevel == 0) ? (a_Meta & 0x07) : (a_Meta | 0x08));
+					a_World.SetBlockMeta(a_Position, (a_PoweringData.PowerLevel == 0) ? (a_Meta & 0x07) : (a_Meta | 0x08));
 					return cVector3iArray{ { Offset + a_Position }, { -Offset + a_Position } };
 				}
 
@@ -91,8 +86,9 @@ public:
 		}
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());
diff --git a/src/Simulator/IncrementalRedstoneSimulator/PressurePlateHandler.h b/src/Simulator/IncrementalRedstoneSimulator/PressurePlateHandler.h
index 07bb1fdc1..14d7baf85 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/PressurePlateHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/PressurePlateHandler.h
@@ -13,22 +13,17 @@ class cPressurePlateHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cPressurePlateHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		UNUSED(a_QueryPosition);
 		UNUSED(a_QueryBlockType);
 
-		return static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
+		return static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
 		UNUSED(a_Meta);
 
@@ -56,7 +51,7 @@ public:
 			unsigned int m_NumberOfEntities;
 			bool m_FoundPlayer;
 		} PressurePlateCallback;
-		m_World.ForEachEntityInBox(cBoundingBox(Vector3d(0.5, 0, 0.5) + a_Position, 0.5, 0.5), PressurePlateCallback);
+		a_World.ForEachEntityInBox(cBoundingBox(Vector3d(0.5, 0, 0.5) + a_Position, 0.5, 0.5), PressurePlateCallback);
 
 		switch (a_BlockType)
 		{
@@ -84,25 +79,26 @@ public:
 		}
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		UNUSED(a_PoweringData.PowerLevel);
 		// LOGD("Evaluating clicky the pressure plate (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 
-		auto Power = GetPowerLevel(a_Position, a_BlockType, a_Meta);
-		auto PreviousPower = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, PoweringData(a_BlockType, Power));
+		auto Power = GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta);
+		auto PreviousPower = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, PoweringData(a_BlockType, Power));
 
 		if (Power != PreviousPower.PowerLevel)
 		{
-			m_World.SetBlockMeta(a_Position, (Power == 0) ? E_META_PRESSURE_PLATE_RAISED : E_META_PRESSURE_PLATE_DEPRESSED);
+			a_World.SetBlockMeta(a_Position, (Power == 0) ? E_META_PRESSURE_PLATE_RAISED : E_META_PRESSURE_PLATE_DEPRESSED);
 			return GetAdjustedRelatives(a_Position, StaticAppend(GetRelativeLaterals(), cVector3iArray{ OffsetYM() }));
 		}
 
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
diff --git a/src/Simulator/IncrementalRedstoneSimulator/RedstoneBlockHandler.h b/src/Simulator/IncrementalRedstoneSimulator/RedstoneBlockHandler.h
index 18a775b7d..4151fc9ad 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/RedstoneBlockHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/RedstoneBlockHandler.h
@@ -12,13 +12,9 @@ class cRedstoneBlockHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cRedstoneBlockHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -26,22 +22,24 @@ public:
 		return cIncrementalRedstoneSimulator::IsMechanism(a_QueryBlockType) ? 15 : 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		return 15;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating crimson the redstone block (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
diff --git a/src/Simulator/IncrementalRedstoneSimulator/RedstoneComparatorHandler.h b/src/Simulator/IncrementalRedstoneSimulator/RedstoneComparatorHandler.h
index 34af3ccbc..55efee6b5 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/RedstoneComparatorHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/RedstoneComparatorHandler.h
@@ -13,12 +13,7 @@ class cRedstoneComparatorHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cRedstoneComparatorHandler(cWorld & a_World) :
-		super(a_World)
-	{
-	}
-
-	unsigned char GetFrontPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, unsigned char a_HighestSidePowerLevel, unsigned char a_HighestRearPowerLevel)
+	unsigned char GetFrontPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, unsigned char a_HighestSidePowerLevel, unsigned char a_HighestRearPowerLevel) const
 	{
 		if (cBlockComparatorHandler::IsInSubtractionMode(a_Meta))
 		{
@@ -32,15 +27,19 @@ public:
 		}
 	}
 
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		UNUSED(a_QueryPosition);
 		UNUSED(a_QueryBlockType);
+		auto ChunkData = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData();
 
-		return (cBlockComparatorHandler::GetFrontCoordinate(a_Position, a_Meta & 0x3) == a_QueryPosition) ? static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel : 0;
+		return (
+			(cBlockComparatorHandler::GetFrontCoordinate(a_Position, a_Meta & 0x3) == a_QueryPosition) ?
+			ChunkData->GetCachedPowerData(a_Position).PowerLevel : 0
+		);
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
@@ -77,36 +76,33 @@ public:
 		} CCB;
 
 		auto RearCoordinate = cBlockComparatorHandler::GetRearCoordinate(a_Position, a_Meta & 0x3);
-		m_World.DoWithBlockEntityAt(RearCoordinate.x, RearCoordinate.y, RearCoordinate.z, CCB);
+		a_World.DoWithBlockEntityAt(RearCoordinate.x, RearCoordinate.y, RearCoordinate.z, CCB);
 		auto RearPower = CCB.m_SignalStrength;
+		auto RearType = a_World.GetBlock(RearCoordinate);
 
-		auto PotentialSourceHandler = cIncrementalRedstoneSimulator::CreateComponent(m_World, m_World.GetBlock(RearCoordinate), static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData());
+		auto PotentialSourceHandler = cIncrementalRedstoneSimulator::GetComponentHandler(RearType);
 		if (PotentialSourceHandler != nullptr)
 		{
-			BLOCKTYPE Type;
-			NIBBLETYPE Meta;
-			if (m_World.GetBlockTypeMeta(RearCoordinate.x, RearCoordinate.y, RearCoordinate.z, Type, Meta))
-			{
-				RearPower = std::max(CCB.m_SignalStrength, PotentialSourceHandler->GetPowerDeliveredToPosition(RearCoordinate, Type, Meta, a_Position, a_BlockType));
-			}
+			NIBBLETYPE RearMeta = a_World.GetBlockMeta(RearCoordinate);
+			RearPower = std::max(CCB.m_SignalStrength, PotentialSourceHandler->GetPowerDeliveredToPosition(a_World, RearCoordinate, RearType, RearMeta, a_Position, a_BlockType));
 		}
 
 		return RearPower;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// Note that a_PoweringData here contains the maximum * side * power level, as specified by GetValidSourcePositions
 		// LOGD("Evaluating ALU the comparator (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
-		auto Data = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData();
+		auto Data = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData();
 		auto DelayInfo = Data->GetMechanismDelayInfo(a_Position);
 
 		// Delay is used here to prevent an infinite loop (#3168)
 		if (DelayInfo == nullptr)
 		{
-			auto RearPower = GetPowerLevel(a_Position, a_BlockType, a_Meta);
-			auto FrontPower = GetFrontPowerLevel(a_Position, a_BlockType, a_Meta, a_PoweringData.PowerLevel, RearPower);
-			auto PreviousFrontPower = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, PoweringData(a_PoweringData.PoweringBlock, FrontPower));
+			auto RearPower = GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta);
+			auto FrontPower = GetFrontPowerLevel(a_World, a_Position, a_BlockType, a_Meta, a_PoweringData.PowerLevel, RearPower);
+			auto PreviousFrontPower = Data->ExchangeUpdateOncePowerData(a_Position, PoweringData(a_PoweringData.PoweringBlock, FrontPower));
 
 			bool ShouldBeOn = (RearPower > 0);  // Provide visual indication by examining * rear * power level
 			bool ShouldUpdate = (FrontPower != PreviousFrontPower.PowerLevel);  // "Business logic" (:P) - determine by examining *side* power levels
@@ -124,7 +120,7 @@ public:
 
 			if (DelayTicks == 0)
 			{
-				m_World.SetBlockMeta(a_Position, ShouldPowerOn ? (a_Meta | 0x8) : (a_Meta & 0x7));
+				a_World.SetBlockMeta(a_Position, ShouldPowerOn ? (a_Meta | 0x8) : (a_Meta & 0x7));
 				Data->m_MechanismDelays.erase(a_Position);
 
 				// Assume that an update (to front power) is needed.
@@ -138,8 +134,9 @@ public:
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		return cVector3iArray {cBlockComparatorHandler::GetSideCoordinate(a_Position, a_Meta & 0x3, false), cBlockComparatorHandler::GetSideCoordinate(a_Position, a_Meta & 0x3, true)};
 	}
diff --git a/src/Simulator/IncrementalRedstoneSimulator/RedstoneHandler.h b/src/Simulator/IncrementalRedstoneSimulator/RedstoneHandler.h
index 36fe640f1..48356ee9c 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/RedstoneHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/RedstoneHandler.h
@@ -12,16 +12,8 @@ class cRedstoneHandler
 {
 public:
 
-	cRedstoneHandler(cWorld & a_World) :
-		m_World(a_World)
-	{
-	}
-
-public:
-
-	// Disable the copy constructor and assignment operator
-	cRedstoneHandler(const cRedstoneHandler &) = delete;
-	cRedstoneHandler & operator=(const cRedstoneHandler &) = delete;
+	cRedstoneHandler() = default;
+	DISALLOW_COPY_AND_ASSIGN(cRedstoneHandler);
 
 	struct PoweringData
 	{
@@ -63,44 +55,44 @@ public:
 		}
 	};
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) = 0;
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) = 0;
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) = 0;
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) = 0;
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const = 0;
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const = 0;
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const = 0;
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const = 0;
 
 	// Force a virtual destructor
 	virtual ~cRedstoneHandler() {}
 
 protected:
 
-	cWorld & m_World;
-
 	template <class Container>
-	static const Container StaticAppend(const Container && a_Lhs, const Container && a_Rhs)
+	static Container StaticAppend(const Container & a_Lhs, const Container & a_Rhs)
 	{
 		Container ToReturn = a_Lhs;
 		std::copy(a_Rhs.begin(), a_Rhs.end(), std::back_inserter(ToReturn));
 		return ToReturn;
 	}
 
-	inline static const Vector3i OffsetYP()
+	inline static Vector3i OffsetYP()
 	{
 		return Vector3i(0, 1, 0);
 	}
 
-	inline static const Vector3i OffsetYM()
+	inline static Vector3i OffsetYM()
 	{
 		return Vector3i(0, -1, 0);
 	}
 
-	static const cVector3iArray GetAdjustedRelatives(const Vector3i & a_Position, const cVector3iArray & a_Relatives)
+	static cVector3iArray GetAdjustedRelatives(Vector3i a_Position, cVector3iArray a_Relatives)
 	{
-		cVector3iArray Adjusted = a_Relatives;
-		std::for_each(Adjusted.begin(), Adjusted.end(), [a_Position](cVector3iArray::value_type & a_Entry) { a_Entry += a_Position; });
-		return Adjusted;
+		for (auto & Entry : a_Relatives)
+		{
+			Entry += a_Position;
+		}
+		return a_Relatives;
 	}
 
-	inline static const cVector3iArray GetRelativeAdjacents()
+	inline static cVector3iArray GetRelativeAdjacents()
 	{
 		return
 		{
@@ -115,7 +107,7 @@ protected:
 		};
 	}
 
-	inline static const cVector3iArray GetRelativeLaterals()
+	inline static cVector3iArray GetRelativeLaterals()
 	{
 		return
 		{
diff --git a/src/Simulator/IncrementalRedstoneSimulator/RedstoneLampHandler.h b/src/Simulator/IncrementalRedstoneSimulator/RedstoneLampHandler.h
index 4d6902feb..5d9cd241b 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/RedstoneLampHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/RedstoneLampHandler.h
@@ -11,27 +11,22 @@ class cRedstoneLampHandler : public cRedstoneHandler
 {
 public:
 
-	cRedstoneLampHandler(cWorld & a_World) :
-		cRedstoneHandler(a_World)
-	{
-	}
-
 	inline static bool IsOn(BLOCKTYPE a_BlockType)
 	{
 		return (a_BlockType == E_BLOCK_REDSTONE_LAMP_ON);
 	}
 
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
 		return 0;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating lamp (%i %i %i)", a_Position.x, a_Position.y, a_Position.z);
 
@@ -39,22 +34,23 @@ public:
 		{
 			if (!IsOn(a_BlockType))
 			{
-				m_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, E_BLOCK_REDSTONE_LAMP_ON, 0);
+				a_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, E_BLOCK_REDSTONE_LAMP_ON, 0);
 			}
 		}
 		else
 		{
 			if (IsOn(a_BlockType))
 			{
-				m_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, E_BLOCK_REDSTONE_LAMP_OFF, 0);
+				a_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, E_BLOCK_REDSTONE_LAMP_OFF, 0);
 			}
 		}
 
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Meta);
 		UNUSED(a_BlockType);
 		return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());
diff --git a/src/Simulator/IncrementalRedstoneSimulator/RedstoneRepeaterHandler.h b/src/Simulator/IncrementalRedstoneSimulator/RedstoneRepeaterHandler.h
index bf95b66e7..9d8dda1bb 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/RedstoneRepeaterHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/RedstoneRepeaterHandler.h
@@ -13,32 +13,31 @@ class cRedstoneRepeaterHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cRedstoneRepeaterHandler(cWorld & a_World) :
-		super(a_World)
-	{
-	}
-
 	inline static bool IsOn(BLOCKTYPE a_Block)
 	{
 		return (a_Block == E_BLOCK_REDSTONE_REPEATER_ON);
 	}
 
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
-		return (a_QueryPosition == (a_Position + cBlockRedstoneRepeaterHandler::GetFrontCoordinateOffset(a_Meta))) ? GetPowerLevel(a_Position, a_BlockType, a_Meta) : 0;
+		return (
+			(a_QueryPosition == (a_Position + cBlockRedstoneRepeaterHandler::GetFrontCoordinateOffset(a_Meta))) ?
+			GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta) : 0
+		);
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_Meta);
 		return IsOn(a_BlockType) ? 15 : 0;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating loopy the repeater (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
-		auto Data = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData();
+		auto Data = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData();
 		auto DelayInfo = Data->GetMechanismDelayInfo(a_Position);
 
 		if (DelayInfo == nullptr)
@@ -57,7 +56,7 @@ public:
 
 			if (DelayTicks == 0)
 			{
-				m_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, ShouldPowerOn ? E_BLOCK_REDSTONE_REPEATER_ON : E_BLOCK_REDSTONE_REPEATER_OFF, a_Meta);
+				a_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, ShouldPowerOn ? E_BLOCK_REDSTONE_REPEATER_ON : E_BLOCK_REDSTONE_REPEATER_OFF, a_Meta);
 				Data->m_MechanismDelays.erase(a_Position);
 				return cVector3iArray{ cBlockRedstoneRepeaterHandler::GetFrontCoordinateOffset(a_Meta) + a_Position };
 			}
@@ -66,7 +65,7 @@ public:
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
 		return { cBlockRedstoneRepeaterHandler::GetRearCoordinateOffset(a_Meta) + a_Position };
 	}
diff --git a/src/Simulator/IncrementalRedstoneSimulator/RedstoneToggleHandler.h b/src/Simulator/IncrementalRedstoneSimulator/RedstoneToggleHandler.h
index 160614bc3..9d950a8b9 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/RedstoneToggleHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/RedstoneToggleHandler.h
@@ -14,12 +14,7 @@ class cRedstoneToggleHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cRedstoneToggleHandler(cWorld & a_World) :
-		super(a_World)
-	{
-	}
-
-	inline static const Vector3i GetPositionAttachedTo(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta)
+	inline static Vector3i GetPositionAttachedTo(Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta)
 	{
 		switch (a_BlockType)
 		{
@@ -68,18 +63,19 @@ public:
 		}
 	}
 
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		UNUSED(a_QueryBlockType);
 		if ((GetPositionAttachedTo(a_Position, a_BlockType, a_Meta) == a_QueryPosition) || cIncrementalRedstoneSimulator::IsMechanism(a_QueryBlockType))
 		{
-			return GetPowerLevel(a_Position, a_BlockType, a_Meta);
+			return GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta);
 		}
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 
 		switch (a_BlockType)
@@ -95,14 +91,15 @@ public:
 		}
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating templatio<> the lever/button (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
diff --git a/src/Simulator/IncrementalRedstoneSimulator/RedstoneTorchHandler.h b/src/Simulator/IncrementalRedstoneSimulator/RedstoneTorchHandler.h
index a95cf2e24..b892dedb5 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/RedstoneTorchHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/RedstoneTorchHandler.h
@@ -11,17 +11,12 @@ 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)
+	inline static Vector3i GetOffsetAttachedTo(const Vector3i & a_Position, NIBBLETYPE a_Meta)
 	{
 		switch (a_Meta)
 		{
@@ -38,7 +33,7 @@ public:
 		}
 	}
 
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		if (
 			IsOn(a_BlockType) &&
@@ -51,16 +46,16 @@ public:
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
 		return IsOn(a_BlockType) ? 15 : 0;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const 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 Data = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData();
 		auto DelayInfo = Data->GetMechanismDelayInfo(a_Position);
 
 		if (DelayInfo == nullptr)
@@ -79,7 +74,7 @@ public:
 
 			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);
+				a_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();
@@ -91,8 +86,9 @@ public:
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		return { (a_Position + GetOffsetAttachedTo(a_Position, a_Meta)) };
 	}
diff --git a/src/Simulator/IncrementalRedstoneSimulator/RedstoneWireHandler.h b/src/Simulator/IncrementalRedstoneSimulator/RedstoneWireHandler.h
index e9543bb02..7b2a60323 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/RedstoneWireHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/RedstoneWireHandler.h
@@ -12,11 +12,6 @@ class cRedstoneWireHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cRedstoneWireHandler(cWorld & a_World) :
-		super(a_World)
-	{
-	}
-
 	inline static bool IsDirectlyConnectingMechanism(BLOCKTYPE a_Block)
 	{
 		switch (a_Block)
@@ -32,26 +27,26 @@ public:
 		}
 	}
 
-	const cVector3iArray GetTerracingConnectionOffsets(const Vector3i & a_Position)
+	cVector3iArray GetTerracingConnectionOffsets(cWorld & a_World, const Vector3i & a_Position) const
 	{
 		cVector3iArray RelativePositions;
-		auto YPTerraceBlock = m_World.GetBlock(a_Position + OffsetYP());
+		auto YPTerraceBlock = a_World.GetBlock(a_Position + OffsetYP());
 		bool IsYPTerracingBlocked = cBlockInfo::IsSolid(YPTerraceBlock) && !cBlockInfo::IsTransparent(YPTerraceBlock);
 
 		for (const auto & Adjacent : GetRelativeLaterals())
 		{
 			if (
 				!IsYPTerracingBlocked &&
-				(m_World.GetBlock(a_Position + Adjacent + OffsetYP()) == E_BLOCK_REDSTONE_WIRE)
+				(a_World.GetBlock(a_Position + Adjacent + OffsetYP()) == E_BLOCK_REDSTONE_WIRE)
 				)
 			{
 				RelativePositions.emplace_back(Adjacent + OffsetYP());
 			}
-			auto YMTerraceBlock = m_World.GetBlock(a_Position + Adjacent);
+			auto YMTerraceBlock = a_World.GetBlock(a_Position + Adjacent);
 			if (
 				// IsYMTerracingBlocked (i.e. check block above lower terracing position, a.k.a. just the plain adjacent)
 				(!cBlockInfo::IsSolid(YMTerraceBlock) || cBlockInfo::IsTransparent(YMTerraceBlock)) &&
-				(m_World.GetBlock(a_Position + Adjacent + OffsetYM()) == E_BLOCK_REDSTONE_WIRE)
+				(a_World.GetBlock(a_Position + Adjacent + OffsetYM()) == E_BLOCK_REDSTONE_WIRE)
 			)
 			{
 				RelativePositions.emplace_back(Adjacent + OffsetYM());
@@ -61,7 +56,7 @@ public:
 		return RelativePositions;
 	}
 
-	virtual unsigned char GetPowerDeliveredToPosition(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) override
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		if (a_QueryPosition == (a_Position + OffsetYP()))
 		{
@@ -80,9 +75,9 @@ public:
 			Vector3i PotentialOffset;
 			bool FoundOneBorderingMechanism = false;
 
-			for (const auto & Offset : StaticAppend(GetRelativeLaterals(), GetTerracingConnectionOffsets(a_Position)))
+			for (const auto & Offset : StaticAppend(GetRelativeLaterals(), GetTerracingConnectionOffsets(a_World, a_Position)))
 			{
-				if (IsDirectlyConnectingMechanism(m_World.GetBlock(Offset + a_Position)))
+				if (IsDirectlyConnectingMechanism(a_World.GetBlock(Offset + a_Position)))
 				{
 					if (FoundOneBorderingMechanism)
 					{
@@ -105,32 +100,34 @@ public:
 		return (a_Meta != 0) ? --a_Meta : a_Meta;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		return a_Meta;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		UNUSED(a_BlockType);
 		// LOGD("Evaluating dusty the wire (%d %d %d) %i", a_Position.x, a_Position.y, a_Position.z, a_PoweringData.PowerLevel);
 
 		if (a_Meta != a_PoweringData.PowerLevel)
 		{
-			m_World.SetBlockMeta(a_Position, a_PoweringData.PowerLevel);
-			return GetAdjustedRelatives(a_Position, StaticAppend(StaticAppend(GetRelativeLaterals(), GetTerracingConnectionOffsets(a_Position)), cVector3iArray{ OffsetYM() }));
+			a_World.SetBlockMeta(a_Position, a_PoweringData.PowerLevel);
+			return GetAdjustedRelatives(a_Position, StaticAppend(StaticAppend(GetRelativeLaterals(), GetTerracingConnectionOffsets(a_World, a_Position)), cVector3iArray{ OffsetYM() }));
 		}
 
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 
-		return GetAdjustedRelatives(a_Position, StaticAppend(GetRelativeAdjacents(), GetTerracingConnectionOffsets(a_Position)));
+		return GetAdjustedRelatives(a_Position, StaticAppend(GetRelativeAdjacents(), GetTerracingConnectionOffsets(a_World, a_Position)));
 	}
 };
diff --git a/src/Simulator/IncrementalRedstoneSimulator/SmallGateHandler.h b/src/Simulator/IncrementalRedstoneSimulator/SmallGateHandler.h
index 1844f417d..6c201f354 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/SmallGateHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/SmallGateHandler.h
@@ -12,13 +12,9 @@ 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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -27,28 +23,30 @@ public:
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		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
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const 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))
+		auto Data = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData();
+		if (a_PoweringData != Data->ExchangeUpdateOncePowerData(a_Position, a_PoweringData))
 		{
-			m_World.SetBlockMeta(a_Position, (a_PoweringData.PowerLevel > 0) ? (a_Meta | 0x4) : (a_Meta & ~0x04));
+			a_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
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());;
diff --git a/src/Simulator/IncrementalRedstoneSimulator/SolidBlockHandler.h b/src/Simulator/IncrementalRedstoneSimulator/SolidBlockHandler.h
index 341b5ae36..215ccd990 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/SolidBlockHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/SolidBlockHandler.h
@@ -12,35 +12,30 @@ class cSolidBlockHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cSolidBlockHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		// TODO: wire isn't linked powered only if the source was a wire, not just because it is a wire
 		return (
 			!cIncrementalRedstoneSimulator::IsRedstone(a_QueryBlockType) ||
 			(
 				(a_QueryBlockType == E_BLOCK_REDSTONE_WIRE) &&
-				(static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PoweringBlock == E_BLOCK_REDSTONE_WIRE)
+				(static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PoweringBlock == E_BLOCK_REDSTONE_WIRE)
 			)
-		) ? 0 : GetPowerLevel(a_Position, a_BlockType, a_Meta);
+		) ? 0 : GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta);
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
-		return static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
+		return static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		// LOGD("Evaluating blocky the generic block (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 
-		auto PreviousPower = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData);
+		auto PreviousPower = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData);
 		if ((a_PoweringData != PreviousPower) || (a_PoweringData.PoweringBlock != PreviousPower.PoweringBlock))
 		{
 			return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());
@@ -49,8 +44,9 @@ public:
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 
diff --git a/src/Simulator/IncrementalRedstoneSimulator/TNTHandler.h b/src/Simulator/IncrementalRedstoneSimulator/TNTHandler.h
index c313bd07d..253b502fe 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/TNTHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/TNTHandler.h
@@ -14,13 +14,9 @@ class cTNTHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cTNTHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -29,28 +25,30 @@ public:
 		return 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		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
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating explodinator the trinitrotoluene (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 		if (a_PoweringData.PowerLevel != 0)
 		{
-			m_World.BroadcastSoundEffect("entity.tnt.primed", static_cast<double>(a_Position.x), static_cast<double>(a_Position.y), static_cast<double>(a_Position.z), 0.5f, 0.6f);
-			m_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, E_BLOCK_AIR, 0);
-			m_World.SpawnPrimedTNT(a_Position.x + 0.5, a_Position.y + 0.5, a_Position.z + 0.5);  // 80 ticks to boom
+			a_World.BroadcastSoundEffect("entity.tnt.primed", static_cast<double>(a_Position.x), static_cast<double>(a_Position.y), static_cast<double>(a_Position.z), 0.5f, 0.6f);
+			a_World.SetBlock(a_Position.x, a_Position.y, a_Position.z, E_BLOCK_AIR, 0);
+			a_World.SpawnPrimedTNT(a_Position.x + 0.5, a_Position.y + 0.5, a_Position.z + 0.5);  // 80 ticks to boom
 		}
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());;
diff --git a/src/Simulator/IncrementalRedstoneSimulator/TrappedChestHandler.h b/src/Simulator/IncrementalRedstoneSimulator/TrappedChestHandler.h
index 561c32d19..8b7b82d49 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/TrappedChestHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/TrappedChestHandler.h
@@ -13,22 +13,17 @@ class cTrappedChestHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cTrappedChestHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		UNUSED(a_QueryPosition);
 		UNUSED(a_QueryBlockType);
 
-		return static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
+		return static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
@@ -63,16 +58,16 @@ public:
 
 		} GTCP;
 
-		VERIFY(!m_World.DoWithChestAt(a_Position.x, a_Position.y, a_Position.z, GTCP));
+		VERIFY(!a_World.DoWithChestAt(a_Position.x, a_Position.y, a_Position.z, GTCP));
 		return GTCP.GetPowerLevel();
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating tricky the trapped chest (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 
-		auto Power = GetPowerLevel(a_Position, a_BlockType, a_Meta);
-		auto PreviousPower = static_cast<cIncrementalRedstoneSimulator *>(m_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, PoweringData(a_BlockType, Power));
+		auto Power = GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta);
+		auto PreviousPower = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, PoweringData(a_BlockType, Power));
 
 		if (Power != PreviousPower.PowerLevel)
 		{
@@ -82,8 +77,9 @@ public:
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_Position);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
diff --git a/src/Simulator/IncrementalRedstoneSimulator/TripwireHookHandler.h b/src/Simulator/IncrementalRedstoneSimulator/TripwireHookHandler.h
index 382a1c311..85c05430c 100644
--- a/src/Simulator/IncrementalRedstoneSimulator/TripwireHookHandler.h
+++ b/src/Simulator/IncrementalRedstoneSimulator/TripwireHookHandler.h
@@ -13,20 +13,15 @@ class cTripwireHookHandler : public cRedstoneHandler
 	typedef cRedstoneHandler super;
 public:
 
-	cTripwireHookHandler(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
+	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const Vector3i & a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
 	{
 		UNUSED(a_QueryBlockType);
 		UNUSED(a_QueryPosition);
 
-		return (GetPowerLevel(a_Position, a_BlockType, a_Meta) == 15) ? 15 : 0;
+		return (GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta) == 15) ? 15 : 0;
 	}
 
-	virtual unsigned char GetPowerLevel(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual unsigned char GetPowerLevel(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
 		UNUSED(a_BlockType);
 
@@ -40,7 +35,7 @@ public:
 			NIBBLETYPE Meta;
 
 			AddFaceDirection(Position.x, Position.y, Position.z, FaceToGoTowards);
-			m_World.GetBlockTypeMeta(Position.x, Position.y, Position.z, Type, Meta);
+			a_World.GetBlockTypeMeta(Position.x, Position.y, Position.z, Type, Meta);
 
 			if (Type == E_BLOCK_TRIPWIRE)
 			{
@@ -63,7 +58,7 @@ public:
 					bool m_FoundPlayer;
 				} TripwireCallback;
 
-				if (!m_World.ForEachEntityInBox(cBoundingBox(Vector3d(0.5, 0, 0.5) + Position, 0.5, 0.5), TripwireCallback))
+				if (!a_World.ForEachEntityInBox(cBoundingBox(Vector3d(0.5, 0, 0.5) + Position, 0.5, 0.5), TripwireCallback))
 				{
 					FoundActivated = true;
 				}
@@ -91,11 +86,11 @@ public:
 		return 0;
 	}
 
-	virtual cVector3iArray Update(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) override
+	virtual cVector3iArray Update(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, PoweringData a_PoweringData) const override
 	{
 		// LOGD("Evaluating hooky the tripwire hook (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 
-		auto Power = GetPowerLevel(a_Position, a_BlockType, a_Meta);
+		auto Power = GetPowerLevel(a_World, a_Position, a_BlockType, a_Meta);
 		NIBBLETYPE Meta;
 		if (Power == 0)
 		{
@@ -119,15 +114,16 @@ public:
 
 		if (Meta != a_Meta)
 		{
-			m_World.SetBlockMeta(a_Position, Meta);
+			a_World.SetBlockMeta(a_Position, Meta);
 			return GetAdjustedRelatives(a_Position, GetRelativeAdjacents());
 		}
 
 		return {};
 	}
 
-	virtual cVector3iArray GetValidSourcePositions(const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override
+	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, const Vector3i & a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
 	{
+		UNUSED(a_World);
 		UNUSED(a_BlockType);
 		UNUSED(a_Meta);
 		UNUSED(a_Position);