New worlds get generated camp names like new claims (t3)

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

docs/PROJECT_MAP.md

@@ -442,7 +442,7 @@ Previews drawn under the cursor: build ghosts, drill aim and pulses, selections,
 Events from the simulation (emit) turned into sounds, toasts and cards.
 - functions: drainEvents
 
-### src/ui/loop.js (127 lines)
+### src/ui/loop.js (133 lines)
 The frame loop and boot.
 - functions: scanVisible, frame, boot
 - variables: lastT, acc, lastRender, frameMs, simMs, fpsSm, ambientT

docs/agent-log.md

@@ -4,6 +4,12 @@ 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.
 
+## 2026-10-24: New worlds get camp names too (Claude Code, Codex)
+
+- The new-world dialog prefills `claimName(seed, existing names)` instead of "World N", and
+  follows seed edits until the player types their own name; a blank name falls back to it too
+  (`src/ui/loop.js`, `session.js`). play.py checks updated. All tests pass.
+
 ## 2026-10-24: t30: progress while generating, loading and saving (Claude Code, Codex)
 
 - `worldgen.js`: `worldSteps` generator yields `[fraction, label]`; `generateWorld` (sync, tests)

src/ui/loop.js

@@ -98,16 +98,22 @@ function boot(hotData) {
   buildTitleCells(); drawTitle();
   $('nw-seed').value = String(Math.floor(Math.random() * 900000) + 100000);
   $('wallet').onclick = () => { playSfx('ui'); openNotebook('Market'); };
+  let autoName = '', worldNames = [];
+  const newWorldSeed = () => parseInt(String($('nw-seed').value).replace(/\D/g, ''), 10) || Math.floor(Math.random() * 1e6);
   $('btn-new').onclick = async () => {
     auInit(); playSfx('ui'); $('newworld').hidden = !$('newworld').hidden;
     if ($('newworld').hidden) return;
-    try { $('nw-name').value = `World ${(await listWorlds()).length + 1}`; }
+    try { worldNames = (await listWorlds()).map(w => w.name); }
-    catch (e) { $('nw-name').value = 'World 1'; }
+    catch (e) { worldNames = []; }
+    $('nw-name').value = autoName = claimName(newWorldSeed(), worldNames);
     $('nw-name').focus(); $('nw-name').select();
   };
+  $('nw-seed').oninput = () => {
+    if ($('nw-name').value === autoName) $('nw-name').value = autoName = claimName(newWorldSeed(), worldNames);
+  };
   for (const id of ['nw-name', 'nw-seed']) $(id).onkeydown = e => { if (e.key === 'Enter') $('btn-generate').click(); };
   $('btn-generate').onclick = () => {
-    const seed = parseInt(String($('nw-seed').value).replace(/\D/g, ''), 10) || Math.floor(Math.random() * 1e6);
+    const seed = newWorldSeed();
     const [w, h] = $('nw-size').value.split('x').map(Number);
     startNewWorld(seed, w, h, $('nw-name').value);
   };

src/ui/session.js

@@ -33,7 +33,7 @@ async function setupNewWorld(seed, w, h, name, carried, title = 'Generating worl
 async function startNewWorld(seed, w, h, name = '') {
   try {
     const worlds = await listWorlds();
-    await setupNewWorld(seed, w, h, cleanWorldName(name, `World ${worlds.length + 1}`));
+    await setupNewWorld(seed, w, h, cleanWorldName(name, claimName(seed, worlds.map(w => w.name))));
     career = { id: newWorldId(), claims: [GAME.worldId], claimNo: 1 };
     GAME.careerId = career.id; GAME.claimNo = 1;
     showLoading(true, 0.9, 'Saving');

test/play.py

@@ -1,7 +1,7 @@
 """Play-test in a real browser: mouse, keyboard and a mocked gamepad drive the game; save and continue.
    Screenshots go to shots/play/ (or the folder given as the first argument). Pixel look unless the
    second argument is 'smooth'."""
-import json, sys, pathlib
+import json, sys, pathlib, re
 sys.path.insert(0, str(pathlib.Path(__file__).resolve().parent.parent / 'tools'))
 from use_venv import ensure_playwright; ensure_playwright()
 from playwright.sync_api import sync_playwright
@@ -75,12 +75,23 @@ with sync_playwright() as p:
         if pg.is_visible('#nw-seed'): pg.click('#btn-new')
         pg.click('#btn-new')
         pg.wait_for_function("document.activeElement === $('nw-name')")
-        names[seed] = 'Copper Valley' if seed == 222 else pg.input_value('#nw-name')
+        auto_name = pg.input_value('#nw-name')
-        check(f'new world {seed} offers the next default name', pg.input_value('#nw-name') == f'World {2 if seed == 222 else 3}')
+        check(f'new world {seed} offers a two-word camp name', bool(re.fullmatch(r'[A-Z][a-z]+ [A-Z][a-z]+', auto_name)))
+        check(f'new world {seed} default matches its seed', auto_name == pg.evaluate("async () => claimName(parseInt($('nw-seed').value, 10), (await listWorlds()).map(w => w.name))"))
+        check('default name is selected for replacement', pg.evaluate("$('nw-name').selectionStart === 0 && $('nw-name').selectionEnd === $('nw-name').value.length"))
+        pg.fill('#nw-seed', '42')
+        first_name = pg.input_value('#nw-name')
+        pg.fill('#nw-seed', str(seed))
+        expected = pg.evaluate("async seed => claimName(seed, (await listWorlds()).map(w => w.name))", seed)
+        check(f'changing seed to {seed} updates the camp name', pg.input_value('#nw-name') == expected and expected != first_name)
+        names[seed] = 'Copper Valley' if seed == 222 else expected
         if seed == 222:
             pg.fill('#nw-name', names[seed])
-            pg.screenshot(path=str(out / 'new-world.png'))
+            pg.fill('#nw-seed', '42')
-        pg.fill('#nw-seed', str(seed)); pg.press('#nw-name' if seed == 222 else '#nw-seed', 'Enter')
+            check('changing the seed keeps a typed world name', pg.input_value('#nw-name') == names[seed])
+            pg.fill('#nw-seed', str(seed))
+        pg.screenshot(path=str(out / 'new-world.png'))
+        pg.press('#nw-name' if seed == 222 else '#nw-seed', 'Enter')
         pg.wait_for_function('GAME.running', timeout=20000)
         check(f'new world {seed} paints a moving generation bar', pg.evaluate("__loads.some(([t, s, w]) => t === 'Generating world' && parseFloat(w) > 0 && parseFloat(w) < 90) && !GAME.loading"))
         check(f'new world {seed} shows the Welcome card', pg.evaluate("[...$('cards').children].some(c => c.textContent.includes('Welcome'))"))
@@ -133,7 +144,7 @@ with sync_playwright() as p:
     check('Continue chooses the most recently saved world', pg.evaluate('worldSeed') == 333)
     pg.evaluate('quitToTitle()')
     if not pg.is_visible('#nw-seed'): pg.click('#btn-new')
-    blank_default = pg.evaluate("listWorlds().then(w => `World ${w.length + 1}`)")
+    blank_default = pg.evaluate("listWorlds().then(w => claimName(777, w.map(w => w.name)))")
     pg.fill('#nw-name', '   ')
     pg.fill('#nw-seed', '777'); pg.click('#btn-generate')
     pg.wait_for_function('GAME.running === true', timeout=20000)