Apply trunk r10353 to 0.5.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/branches/stone_soup-0.5@10354 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 13 insertions, 0 deletions

diff --git a/crawl-ref/source/travel.cc b/crawl-ref/source/travel.cc
index 90a9b33817..0683978240 100644
--- a/crawl-ref/source/travel.cc
+++ b/crawl-ref/source/travel.cc
@@ -796,6 +796,19 @@ bool is_travelable_stair(dungeon_feature_type gridc)
     }
 }
 
+// Returns true if the given dungeon feature is an escape hatch.
+bool is_escape_hatch(dungeon_feature_type gridc)
+{
+    switch (gridc)
+    {
+    case DNGN_ESCAPE_HATCH_DOWN:
+    case DNGN_ESCAPE_HATCH_UP:
+        return (true);
+    default:
+        return (false);
+    }
+}
+
 // Returns true if the given dungeon feature can be considered a gate.
 bool is_gate(dungeon_feature_type gridc)
 {