text: 
  #pragma once
  
  #include "RedstoneHandler.h"
  
  
  
  
  
  class cPoweredRailHandler:
  	public cRedstoneHandler
  {
  	using Super = cRedstoneHandler;
  
  public:
  
  	static Vector3i GetPoweredRailAdjacentXZCoordinateOffset(NIBBLETYPE a_Meta)  // Not in cBlockRailHandler since specific to powered rails
  	{
  		switch (a_Meta & 0x7)
  		{
  			case E_META_RAIL_ZM_ZP: return { 0, 0, 1 };
  			case E_META_RAIL_XM_XP: return { 1, 0, 0 };
  			case E_META_RAIL_ASCEND_XP: return { 1, 1, 0 };
  			case E_META_RAIL_ASCEND_XM: return { 1, 1, 0 };
  			case E_META_RAIL_ASCEND_ZM: return { 0, 1, 1 };
  			case E_META_RAIL_ASCEND_ZP: return { 0, 1, 1 };
  			default:
  			{
  				ASSERT(!"Impossible rail meta! wat wat wat");
  				return { 0, 0, 0 };
  			}
  		}
  	}
  
  	virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, 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_World, a_Position, a_BlockType, a_Meta);
  			return (Power <= 7) ? 0 : --Power;
  		}
  		return 0;
  	}
  
  	virtual unsigned char GetPowerLevel(cWorld & a_World, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) const override
  	{
  		UNUSED(a_BlockType);
  		UNUSED(a_Meta);
  		return static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->GetCachedPowerData(a_Position).PowerLevel;
  	}
  
  	virtual cVector3iArray Update(cWorld & a_World, 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);
  
  		switch (a_BlockType)
  		{
  			case E_BLOCK_DETECTOR_RAIL:
  			{
  				/*
  				if ((m_Chunk->GetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ) & 0x08) == 0x08)
  				{
  					SetAllDirsAsPowered(a_RelBlockX, a_RelBlockY, a_RelBlockZ, a_MyType);
  				}
  				*/
  				return {};
  			}
  			case E_BLOCK_ACTIVATOR_RAIL:
  			case E_BLOCK_POWERED_RAIL:
  			{
  				auto Offset = GetPoweredRailAdjacentXZCoordinateOffset(a_Meta);
  				if (a_PoweringData != static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData()->ExchangeUpdateOncePowerData(a_Position, a_PoweringData))
  				{
  					a_World.SetBlockMeta(a_Position, (a_PoweringData.PowerLevel == 0) ? (a_Meta & 0x07) : (a_Meta | 0x08));
  					return cVector3iArray{ { Offset + a_Position }, { -Offset + a_Position } };
  				}
  
  				return {};
  			}
  			default:
  			{
  				ASSERT(!"Unhandled type of rail in passed to rail handler!");
  				return {};
  			}
  		}
  	}
  
  	virtual cVector3iArray GetValidSourcePositions(cWorld & a_World, 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());
  	}
  };
  