From 322d4fb51f5d15568147d9f469a98153ce828847 Mon Sep 17 00:00:00 2001
From: Myk Taylor <myk002@yahoo.com>
Date: Fri, 3 Nov 2023 09:21:14 -0700
Subject: [PATCH] allow burrows to expand into dug channels

---
 plugins/burrow.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/burrow.cpp b/plugins/burrow.cpp
index 413a8eb6e..bf2f6a80b 100644
--- a/plugins/burrow.cpp
+++ b/plugins/burrow.cpp
@@ -182,7 +182,7 @@ static void add_walls_to_burrow(color_ostream &out, df::burrow* b,
 }
 
 static void expand_burrows(color_ostream &out, const df::coord & pos, df::tiletype prev_tt, df::tiletype tt) {
-    if (!isWalkable(tt))
+    if (!isWalkable(tt) && tileShape(tt) != tiletype_shape::RAMP_TOP)
         return;
 
     bool changed = false;