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-rw-r--r--crawl-ref/source/los.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/crawl-ref/source/los.cc b/crawl-ref/source/los.cc
index 282ddba85c..cff3c128be 100644
--- a/crawl-ref/source/los.cc
+++ b/crawl-ref/source/los.cc
@@ -752,6 +752,9 @@ int num_feats_between(const coord_def& source, const coord_def& target,
int count = 0;
int max_dist = grid_distance(source, target);
+ if (source == target)
+ return (0); // XXX: might want to count the cell.
+
// We don't need to find the shortest beam, any beam will suffice.
fallback_ray(source, target, ray);