git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1223 c06c8d41-db1a-0410-9941-cceddc491573
OT53X5ORPLBVG4SRIM5PTQ5ERZLZELB7ZKR6ZKDKVOD7IJR6VDOQC
K2CS6TCX2NDVL2ASEHGP4J4K4IJ6FP3ANNKTSIWVG43HPYSBX6ZQC
if (!is_terrain_known(x + 1, y + 1)) return (BLACK);
if (!is_terrain_known(x + 1, y + 1))
return (BLACK);