F on an ingot mold does nothing and says nothing

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/PROJECT_MAP.md

@@ -286,7 +286,7 @@ The vacuum, blowing grains out, grains in flight (flyers), and the flame tool. M
 - functions: vacuumTargetAt, toolVacuum, nozzle, toolBlow, flyOpen, depositNear, bagTemp, landFlyer, flyTick, toolIgnite
 - variables: blowRR, FLY_G, FLY_Q
 
-### src/sim/actions.js (86 lines)
+### src/sim/actions.js (87 lines)
 Player actions on built things: take back, place a machine or mold, gates, F to interact. Take back whatever piece is at (x,y): machine, mold or block. Returns a message.
 - functions: removePieceAt, removePieceAt0, placeMachineAt, placeMoldAt, toggleGateAt, interactAt
 

docs/agent-log.md

@@ -4,6 +4,17 @@ What agents have done, newest first. Add an entry for every piece of work: the d
 note or request it was for, what changed, the files touched, the tests run, and anything left
 open or not verified. Keep each entry short; the git history has the details.
 
+## 2026-10-23: F on an ingot mold does nothing and says nothing (Claude Code)
+
+Note: "now that ingot molds empty themselves, F still makes a message…"
+
+- `src/sim/actions.js` `interactAt` passes ingot molds by, so F reaches anything else nearby;
+  `src/ui/actions.js` shows no "Nothing to use there." when the cursor is on an ingot mold.
+- Tests: `t_molds` (F on an ingot mold in every state returns nothing, changes nothing, no
+  sound) and `play.py` (F over an ingot mold leaves no status and no toast). All 11 headless
+  suites and `play.py` pass.
+- Open: nothing.
+
 ## 2026-10-23: pixel-art silo for the pixel look (Claude Code, with Codex)
 
 Note: "the silo art looks the same for both pixelated graphiocs and smooth."

src/sim/actions.js

@@ -73,7 +73,8 @@ function interactAt(x, y) {
   const g = toggleGateAt(x, y);
   if (g) { emit({ t: 'sfx', s: 'gate' }); return g === 'open' ? 'Gate opened.' : 'Gate closed.'; }
   const mo = moldAt(x, y);
-  if (mo) { const r = collectMold(mo); if (mo.kind !== 'ingot' && !r.startsWith('New') && !r.startsWith('Knocked')) emit({ t: 'sfx', s: 'ui' }); return r; }
+  // ingot molds empty themselves: F passes them by
+  if (mo && mo.kind !== 'ingot') { const r = collectMold(mo); if (!r.startsWith('New') && !r.startsWith('Knocked')) emit({ t: 'sfx', s: 'ui' }); return r; }
   const pb = ((y / BS) | 0) * BW + ((x / BS) | 0);
   if (blockP[pb] === BP_PUMP || blockP[pb] === BP_OUTLET) {
     blockV[pb] ^= 4; emit({ t: 'sfx', s: 'ui' });

src/ui/actions.js

@@ -43,7 +43,7 @@ function doInteract() {
     if (msg) break outer;
   }
   if (msg) { setStatus(msg, 'info'); if (!/^New (drill bit|bag)/.test(msg)) toast(msg); }
-  else { setStatus('Nothing to use there.', 'info'); }
+  else if ((moldAt(ax, ay) || {}).kind !== 'ingot') setStatus('Nothing to use there.', 'info'); // an ingot mold needs no F: say nothing
 }
 // Pick (middle mouse): the piece under the cursor becomes the one you build, with its
 // direction, wall material and filter settings. On loose material it picks that to blow out.

test/play.py

@@ -303,6 +303,9 @@ with sync_playwright() as p:
     check('bars set and drop on their own', ev("ents.length === 3 && molds[0].state === 'short' && molds[0].ready.length === 0"), ev('[molds[0].state, ents.length]'))
     pg.screenshot(path=str(out / '05-mold-ready.png'))
     check('three bars drop below the mold without F', ev('ents.every(e => e.m === BARCU && e.iy >= molds[0].y + molds[0].h)'), ev('ents.map(e => [e.ix, e.iy])'))
+    ev("GAME.status = ''; GAME.statusT = 0"); n_toasts = ev("$('toasts').children.length")
+    pg.mouse.move(*cell_to_screen(ev('molds[0].x') + 3, ev('molds[0].y') + 3)); settle(150); pg.keyboard.press('f'); settle(150)
+    check('F on an ingot mold says nothing', ev('GAME.status') == '' and ev("$('toasts').children.length") == n_toasts, ev('GAME.status'))
     settle(1500)
     pg.screenshot(path=str(out / '06-bars.png'))
     pg.keyboard.press('2'); settle(60)

test/t_molds.js

@@ -179,7 +179,7 @@ check('loose junk never overlaps a dropped bar', under('SAND') === 1 && run('!ma
 for (const state of ['empty', 'short', 'flawed', 'ready', 'filling']) {
   ingot(); run(`molds[0].state = "${state}"; setCell(molds[0].cavs[0][0], SAND, 30, 0); EV.length = 0;`);
   msg = run('interactAt(molds[0].x + 1, molds[0].y + 1)');
-  check(`F does nothing to a ${state} ingot mold and makes no sound`, /empty themselves/.test(msg) && cavCount(0, run('SAND')) === 1 && run('EV.length === 0 && bagTotal === 0 && ents.length === 0'));
+  check(`F does nothing to a ${state} ingot mold and says nothing`, msg === '' && cavCount(0, run('SAND')) === 1 && run('EV.length === 0 && bagTotal === 0 && ents.length === 0'));
 }
 fresh();
 run('addMold("ingot", 30, 20, BARCU, true); molds[0].cavs[0].slice(0, 20).forEach(i => setCell(i, COPPER, 30, F_CAST)); removeMold(molds[0]);');