From 3f6d823aa41f1a7641fb686cf24561b0aca95798 Mon Sep 17 00:00:00 2001
From: Tommy Santerre <tommy.santerre@gmail.com>
Date: Sat, 14 Feb 2015 17:11:38 -0500
Subject: Correct world height validations. Unify the way we test block above
 the current one (Height - 1 instead of a_RelY + 1). Allow generation of world
 of flat height = 255

---
 src/ClientHandle.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/ClientHandle.cpp')

diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index ec10ac521..6351ab2e3 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -1006,6 +1006,12 @@ void cClientHandle::HandleLeftClick(int a_BlockX, int a_BlockY, int a_BlockZ, eB
 		int BlockY = a_BlockY;
 		int BlockZ = a_BlockZ;
 		AddFaceDirection(BlockX, BlockY, BlockZ, a_BlockFace);
+
+		if ((BlockY < 0) || (BlockY >= cChunkDef::Height))
+		{
+			return;
+		}
+
 		if (cBlockInfo::GetHandler(m_Player->GetWorld()->GetBlock(BlockX, BlockY, BlockZ))->IsClickedThrough())
 		{
 			a_BlockX = BlockX;
-- 
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