1 files changed, 3 insertions, 1 deletions
diff --git a/public/app.js b/public/app.js
index e4fa727..98dcaed 100644
--- a/public/app.js
+++ b/public/app.js
@@ -253,9 +253,11 @@ function choosePlacement(id, dir) {
   if (!ex) return null
   const from = tiles.get(id).rect
   const seen = new Set()
+  const claimed = new Set()
+  if (exits) for (const e of exits) if (e.dir !== dir && e.next) claimed.add(e.next.id)
   const candIds = []
   const addCand = (cid) => {
-    if (cid && !seen.has(cid) && !rectOf.has(cid)) {
+    if (cid && !claimed.has(cid) && !seen.has(cid) && !rectOf.has(cid)) {
       seen.add(cid)
       candIds.push(cid)
     }