From 7fdfb8644169a25805afd32f00ced38c1c14cec8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michal=20Havl=C3=AD=C4=8Dek?=
 <80639037+havel06@users.noreply.github.com>
Date: Wed, 25 Jan 2023 21:46:34 +0100
Subject: Allow certain blocks to be placed on top of upside-down stairs/slabs
 (#5468)

* Placing certain blocks on top of upside down slabs and stairs

* remove TODO

* fix style errors

* IsAnyStairType helper function

* Block placement on stairs and slabs
---
 src/Blocks/BlockPressurePlate.h | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

(limited to 'src/Blocks/BlockPressurePlate.h')

diff --git a/src/Blocks/BlockPressurePlate.h b/src/Blocks/BlockPressurePlate.h
index d2f05b2e7..6d852bfc0 100644
--- a/src/Blocks/BlockPressurePlate.h
+++ b/src/Blocks/BlockPressurePlate.h
@@ -2,6 +2,9 @@
 #pragma once
 
 #include "BlockHandler.h"
+#include "BlockSlab.h"
+#include "../Chunk.h"
+#include "BlockStairs.h"
 
 
 
@@ -24,9 +27,22 @@ private:
 			return false;
 		}
 
-		// TODO: check if the block is upside-down slab or upside-down stairs
+		BLOCKTYPE Block;
+		NIBBLETYPE BlockMeta;
+		a_Chunk.GetBlockTypeMeta(a_Position.addedY(-1), Block, BlockMeta);
+
+		// upside down slabs
+		if (cBlockSlabHandler::IsAnySlabType(Block))
+		{
+			return BlockMeta & E_META_WOODEN_SLAB_UPSIDE_DOWN;
+		}
+
+		// upside down stairs
+		if (cBlockStairsHandler::IsAnyStairType(Block))
+		{
+			return BlockMeta & E_BLOCK_STAIRS_UPSIDE_DOWN;
+		}
 
-		const auto Block = a_Chunk.GetBlock(a_Position.addedY(-1));
 		switch (Block)
 		{
 			case E_BLOCK_ACACIA_FENCE:
-- 
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