pathways: no dead-end directions while photos remain - server extends short walks with library ids to 60 entries, client falls back to any remaining unplaced photo when a direction's walk is exhausted

3 files changed, 16 insertions, 3 deletions

diff --git a/public/app.js b/public/app.js
index 1c98d84..57827fa 100644
--- a/public/app.js
+++ b/public/app.js
@@ -274,6 +274,13 @@ function choosePlacement(id, dir) {
     const p = bestPlacement(tileW(info), tileH(info), from, dir)
     if (p) scored.push({ id: cid, info, rect: p.rect, cost: p.cost })
   }
+  if (!scored.length) {
+    for (const [cid, info] of photoInfo) {
+      if (rectOf.has(cid) || cid === id) continue
+      const p = bestPlacement(tileW(info), tileH(info), from, dir)
+      if (p) scored.push({ id: cid, info, rect: p.rect, cost: p.cost + (claimed.has(cid) ? 1e12 : 0) })
+    }
+  }
   if (!scored.length) return null
   scored.sort((a, b) => a.cost - b.cost)
   const best = scored[0]
diff --git a/public/index.html b/public/index.html
index 2de35c3..d38008c 100644
--- a/public/index.html
+++ b/public/index.html
@@ -5,7 +5,7 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <meta name="color-scheme" content="dark">
   <title>pathways</title>
-  <link rel="stylesheet" href="/app.css?v=12">
+  <link rel="stylesheet" href="/app.css?v=13">
 </head>
 <body>
   <main id="stage">
@@ -16,6 +16,6 @@
     <p>four paths, one per direction. walk them.</p>
     <button id="start">start</button>
   </div>
-  <script src="/app.js?v=12"></script>
+  <script src="/app.js?v=13"></script>
 </body>
 </html>
diff --git a/server.mjs b/server.mjs
index b73c44e..f03eace 100644
--- a/server.mjs
+++ b/server.mjs
@@ -137,11 +137,17 @@ async function load() {
       usedNext.add(nextId)
       const wi = walk.indexOf(nextId)
       const rot = wi > 0 ? walk.slice(wi).concat(walk.slice(0, wi)) : walk
+      const li = library.ids.indexOf(pid)
+      const ext = rot.slice()
+      for (let k = 1; ext.length < 60 && k < library.ids.length; k++) {
+        const wid = library.ids[(li + k) % library.ids.length]
+        if (wid !== pid && !ext.includes(wid)) ext.push(wid)
+      }
       list.push({
         dir: DIRS[i],
         path: { type: p.type, name: p.name, count: p.count },
         nextId,
-        walk: rot,
+        walk: ext,
       })
     }
     exits.set(pid, list)