From 8dc54301a4f0c1d92d9775c3f97901acbf0230f6 Mon Sep 17 00:00:00 2001
From: "madmaxoft@gmail.com"
 <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6>
Date: Tue, 26 Mar 2013 21:06:12 +0000
Subject: BlockArea: Finished rotation and mirroring with meta. Implemented
 example meta handling for vines, stairs and torches.

git-svn-id: http://mc-server.googlecode.com/svn/trunk@1319 0a769ca7-a7f5-676a-18bf-c427514a06d6
---
 source/Blocks/BlockTorch.h | 61 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

(limited to 'source/Blocks/BlockTorch.h')

diff --git a/source/Blocks/BlockTorch.h b/source/Blocks/BlockTorch.h
index 3cc487421..97e31533b 100644
--- a/source/Blocks/BlockTorch.h
+++ b/source/Blocks/BlockTorch.h
@@ -132,6 +132,67 @@ public:
 	{
 		return "step.wood";
 	}
+	
+	
+	virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override
+	{
+		// Bit 4 stays, the rest is swapped around according to a table:
+		NIBBLETYPE TopBits = (a_Meta & 0x08);
+		switch (a_Meta & 0x07)
+		{
+			case 0x01: return TopBits | 0x04;  // East  -> North
+			case 0x02: return TopBits | 0x03;  // West  -> South
+			case 0x03: return TopBits | 0x01;  // South -> East
+			case 0x04: return TopBits | 0x02;  // North -> West
+			default:   return a_Meta;          // Floor -> Floor
+		}
+	}
+
+
+	virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) override
+	{
+		// Bit 4 stays, the rest is swapped around according to a table:
+		NIBBLETYPE TopBits = (a_Meta & 0x08);
+		switch (a_Meta & 0x07)
+		{
+			case 0x01: return TopBits | 0x03;  // East  -> South
+			case 0x02: return TopBits | 0x04;  // West  -> North
+			case 0x03: return TopBits | 0x02;  // South -> West
+			case 0x04: return TopBits | 0x01;  // North -> East
+			default:   return a_Meta;          // Floor -> Floor
+		}
+	}
+
+
+	virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) override
+	{
+		// Bit 4 stays, the rest is swapped around according to a table:
+		NIBBLETYPE TopBits = (a_Meta & 0x08);
+		switch (a_Meta & 0x07)
+		{
+			case 0x03: return TopBits | 0x04;  // South -> North
+			case 0x04: return TopBits | 0x03;  // North -> South
+			default:   return a_Meta;          // Keep the rest
+		}
+	}
+
+
+	// Mirroring around the XZ plane doesn't make sense for floor torches,
+	// the others stay the same, so let's keep all the metas the same.
+	// The base class does tht for us, no need to override MetaMirrorXZ()
+
+	
+	virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) override
+	{
+		// Bit 4 stays, the rest is swapped around according to a table:
+		NIBBLETYPE TopBits = (a_Meta & 0x08);
+		switch (a_Meta & 0x07)
+		{
+			case 0x01: return TopBits | 0x02;  // East -> West
+			case 0x02: return TopBits | 0x01;  // West -> East
+			default:   return a_Meta;          // Keep the rest
+		}
+	}
 } ;
 
 
-- 
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