From 35be634974abbd5a78429ef114cff16c78eb555a Mon Sep 17 00:00:00 2001
From: frosch <frosch@openttd.org>
Date: Sun, 9 Jan 2011 13:53:57 +0000
Subject: (svn r21746) -Fix: [NewGRF] Canal variable 83 accessed water random
 bits also for non-water tiles (e.g. watery industries or objects).

---
 src/newgrf_canal.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/newgrf_canal.cpp b/src/newgrf_canal.cpp
index 4d28d3cef..a1753fcd3 100644
--- a/src/newgrf_canal.cpp
+++ b/src/newgrf_canal.cpp
@@ -58,7 +58,7 @@ static uint32 CanalGetVariable(const ResolverObject *object, byte variable, byte
 		case 0x81: return GetTerrainType(tile);
 
 		/* Random data for river or canal tiles, otherwise zero */
-		case 0x83: return GetWaterTileRandomBits(tile);
+		case 0x83: return IsTileType(tile, MP_WATER) ? GetWaterTileRandomBits(tile) : 0;
 	}
 
 	DEBUG(grf, 1, "Unhandled canal variable 0x%02X", variable);
-- 
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