From 52ad5944c080e858c49267c49703ec79b18e120f Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Thu, 21 Jul 2011 17:00:08 +0300
Subject: Attempt to fix the big bug. Now server either stops sending map or
 mapgen starts generating CONTENT_IGNORE.

---
 src/mapblock.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/mapblock.cpp')

diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index 647a17756..cdbd54525 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -242,7 +242,12 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources,
 			// Check if node above block has sunlight
 			try{
 				MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z));
-				if(n.d == CONTENT_IGNORE || n.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
+				if(n.d == CONTENT_IGNORE)
+				{
+					// Trust heuristics
+					no_sunlight = is_underground;
+				}
+				else if(n.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
 				{
 					no_sunlight = true;
 				}
-- 
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