From 403f8581cf4a10e8402a129eca3f595eb5c029ab Mon Sep 17 00:00:00 2001
From: Julian Laubstein <julianlaubstein@yahoo.de>
Date: Sun, 19 Oct 2014 15:01:01 +0200
Subject: Added mechanics placeable on halfslabs

---
 CONTRIBUTORS                       |  9 +++++----
 src/Blocks/BlockLever.h            | 36 +++++++++++++++++++++++++++++-------
 src/Blocks/BlockRedstone.h         | 27 +++++++++++++++++++++++++--
 src/Blocks/BlockRedstoneRepeater.h | 25 ++++++++++++++++++++++++-
 src/Blocks/BlockSlab.h             |  1 +
 5 files changed, 84 insertions(+), 14 deletions(-)

diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index e65239218..8620a1475 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -4,12 +4,14 @@ BasedDoge (Donated AlchemistVillage prefabs)
 bearbin (Alexander Harkness)
 derouinw
 Diusrex
-Duralex 	
+Duralex
 FakeTruth (founder)
+Howaner
 keyboard
 Lapayo
 Luksor
 marmot21
+Masy98
 mborland
 mgueydan
 MikeHunsinger
@@ -18,6 +20,7 @@ nesco
 rs2k
 SamJBarney
 Sofapriester
+SphinxC0re
 STR_Warrior
 structinf (xdot)
 Sxw1212
@@ -25,11 +28,9 @@ Taugeshtu
 tigerw (Tiger Wang)
 tonibm19
 UltraCoderRU
+WebFreak001
 worktycho
 xoft
 Yeeeeezus (Donated AlchemistVillage prefabs)
-Howaner
-Masy98
-WebFreak001
 
 Please add yourself to this list if you contribute to MCServer.
diff --git a/src/Blocks/BlockLever.h b/src/Blocks/BlockLever.h
index 3b63b396c..f5bedea6c 100644
--- a/src/Blocks/BlockLever.h
+++ b/src/Blocks/BlockLever.h
@@ -1,9 +1,9 @@
 #pragma once
 
 #include "BlockHandler.h"
+#include "../Chunk.h"
 #include "MetaRotator.h"
-
-
+#include "BlockSlab.h"
 
 
 class cBlockLeverHandler :
@@ -93,13 +93,35 @@ public:
 
 	virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
 	{
-		NIBBLETYPE Meta;
-		a_Chunk.UnboundedRelGetBlockMeta(a_RelX, a_RelY, a_RelZ, Meta);
+		NIBBLETYPE Meta = a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ);
+		
+		eBlockFace Face = BlockMetaDataToBlockFace(Meta);
+
+		AddFaceDirection(a_RelX, a_RelY, a_RelZ, Face, true);
+
+		if ((a_RelY < 0) || (a_RelY >= cChunkDef::Height -1))
+		{
+			return false;
+		}
+
+		BLOCKTYPE BlockIsOn;
+		a_Chunk.UnboundedRelGetBlock(a_RelX, a_RelY, a_RelZ, BlockIsOn, Meta);
 
-		AddFaceDirection(a_RelX, a_RelY, a_RelZ, BlockMetaDataToBlockFace(Meta), true);
-		BLOCKTYPE BlockIsOn; a_Chunk.UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, BlockIsOn);
 
-		return (a_RelY > 0) && cBlockInfo::FullyOccupiesVoxel(BlockIsOn);
+		if (cBlockInfo::FullyOccupiesVoxel(BlockIsOn))
+		{
+			return true;
+		}
+		else if (cBlockSlabHandler::IsAnySlabType(BlockIsOn))
+		{
+			// Check if the slab is turned up side down
+			if (((Meta & 0x08) == 0x08) && (Face == BLOCK_FACE_TOP))
+			{
+				return true;
+			}
+		}
+
+		return false;
 	}
 
 
diff --git a/src/Blocks/BlockRedstone.h b/src/Blocks/BlockRedstone.h
index 37d61ed73..2785eb479 100644
--- a/src/Blocks/BlockRedstone.h
+++ b/src/Blocks/BlockRedstone.h
@@ -3,6 +3,7 @@
 
 #include "BlockHandler.h"
 #include "../World.h"
+#include "BlockSlab.h"
 
 
 
@@ -16,11 +17,33 @@ public:
 		: cBlockHandler(a_BlockType)
 	{
 	}
-	
+
+
 
 	virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
 	{
-		return ((a_RelY > 0) && cBlockInfo::FullyOccupiesVoxel(a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ)));
+		if (a_RelY <= 0)
+		{
+			return false;
+		}
+
+		BLOCKTYPE BelowBlock;
+		NIBBLETYPE BelowBlockMeta;
+		a_Chunk.GetBlockTypeMeta(a_RelX, a_RelY - 1, a_RelZ, BelowBlock, BelowBlockMeta);
+
+		if (cBlockInfo::FullyOccupiesVoxel(BelowBlock))
+		{
+			return true;
+		}
+		else if (cBlockSlabHandler::IsAnySlabType(BelowBlock))
+		{
+			// Check if the slab is turned up side down
+			if ((BelowBlockMeta & 0x08) == 0x08)
+			{
+				return true;
+			}
+		}
+		return false;
 	}
 	
 	
diff --git a/src/Blocks/BlockRedstoneRepeater.h b/src/Blocks/BlockRedstoneRepeater.h
index 1eb67f714..e8262dc40 100644
--- a/src/Blocks/BlockRedstoneRepeater.h
+++ b/src/Blocks/BlockRedstoneRepeater.h
@@ -5,6 +5,7 @@
 #include "Chunk.h"
 #include "MetaRotator.h"
 #include "ChunkInterface.h"
+#include "BlockSlab.h"
 
 
 
@@ -44,6 +45,7 @@ public:
 	}
 
 
+
 	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
 	{
 		// Reset meta to zero
@@ -59,7 +61,28 @@ public:
 	
 	virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
 	{
-		return ((a_RelY > 0) && cBlockInfo::IsSolid(a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ)));
+		if (a_RelY <= 0)
+		{
+			return false;
+		}
+
+		BLOCKTYPE BelowBlock;
+		NIBBLETYPE BelowBlockMeta;
+		a_Chunk.GetBlockTypeMeta(a_RelX, a_RelY - 1, a_RelZ, BelowBlock, BelowBlockMeta);
+
+		if (cBlockInfo::FullyOccupiesVoxel(BelowBlock))
+		{
+			return true;
+		}
+		else if (cBlockSlabHandler::IsAnySlabType(BelowBlock))
+		{
+			// Check if the slab is turned up side down
+			if ((BelowBlockMeta & 0x08) == 0x08)
+			{
+				return true;
+			}
+		}
+		return false;
 	}
 
 
diff --git a/src/Blocks/BlockSlab.h b/src/Blocks/BlockSlab.h
index ffe2414f7..d762154df 100644
--- a/src/Blocks/BlockSlab.h
+++ b/src/Blocks/BlockSlab.h
@@ -13,6 +13,7 @@
 #include "../Items/ItemHandler.h"
 #include "Root.h"
 #include "ChunkInterface.h"
+#include "../Entities/Player.h"
 
 
 
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