fix

web/static/view-fleet.js

@@ -1,26 +1,70 @@
 // Fleet manifest with launch controls.
 
 import { api } from './api.js';
-import { h, toast, confirmDialog } from './dom.js';
+import { h, toast, customDialog, pad } from './dom.js';
 import { statusOf } from './status.js';
 
 export function fleetView(ctx) {
   const { ships, selected } = ctx.state;
 
   async function launch(ship) {
-    const ok = await confirmDialog({
-      title: `LAUNCH SHIP #${ship.id}?`,
-      body: [
-        'THE SHIP ENTERS THE BELT ON THE NEXT DAILY RUN.',
-        'ITS PROGRAM IS SEALED AT LAUNCH. IT CANNOT BE CHANGED, RECALLED OR RESTARTED.',
+    let slots;
+    try { slots = await api.slots(); } catch (e) { toast(`COULD NOT LOAD YOUR CODE SLOTS: ${e.message}`, 'err'); return; }
+    const slotLabel = (s) => `${pad(s.slot, 2)}  ${s.builtin ? `${s.name} (EXAMPLE)` : s.empty ? '(EMPTY)' : s.name}`;
+    let remembered = 0;
+    try { remembered = Number(localStorage.getItem('halcyon.launchSlot')); } catch { /* ignore */ }
+    const usable = slots.filter((s) => !s.empty);
+    const first = usable.find((s) => s.slot === remembered) ?? usable.find((s) => !s.builtin) ?? usable[0];
+
+    const sel = h('select', { id: 'launch-slot' },
+      slots.map((s) => h('option', { value: s.slot, disabled: s.empty, selected: s.slot === first.slot }, slotLabel(s))));
+    const status = h('p', { class: 'launch-status', role: 'status', 'aria-live': 'polite' }, 'CHECKING...');
+    const dlg = customDialog({
+      title: `LAUNCH SHIP #${ship.id}`,
+      content: [
+        h('p', null, 'CHOOSE THE CODE SLOT THIS SHIP WILL FLY. IT IS ASSEMBLED NOW AND SEALED INTO THE SHIP.'),
+        h('label', { for: 'launch-slot' }, 'CODE SLOT'),
+        sel,
+        status,
+        h('p', { class: 'warn' }, 'AT LAUNCH THE PROGRAM IS FIXED. IT CANNOT BE CHANGED, RECALLED OR RESTARTED.'),
       ],
       confirmText: 'LAUNCH',
       danger: true,
     });
-    if (!ok) return;
+
+    // Assemble the chosen slot as soon as it is chosen, so problems show before launch.
+    let seq = 0;
+    const check = async () => {
+      const mine = ++seq;
+      const n = Number(sel.value);
+      dlg.confirm.disabled = true;
+      status.className = 'launch-status';
+      status.textContent = 'ASSEMBLING...';
+      let text;
+      let good = false;
+      try {
+        const src = await api.slot(n);
+        const r = await api.assemble(src.source);
+        if (r.size === 0) text = 'THIS SLOT HAS NO CODE.';
+        else if (!r.fits) text = `TOO LARGE: ${r.size} BYTES, THE LIMIT IS ${r.limit}.`;
+        else { good = true; text = `${r.size} BYTES / ${r.instructions} INSTRUCTIONS: READY TO LAUNCH.`; }
+      } catch (e) {
+        text = `DOES NOT ASSEMBLE: ${e.message}`;
+      }
+      if (mine !== seq) return; // a newer choice superseded this one
+      status.className = `launch-status ${good ? 'ok' : 'bad'}`;
+      status.textContent = text;
+      dlg.confirm.disabled = !good;
+    };
+    sel.addEventListener('change', check);
+    check();
+
+    if (!(await dlg.result)) return;
+    const n = Number(sel.value);
     try {
-      await api.launch(ship.id);
-      toast(`SHIP #${ship.id} CLEARED FOR LAUNCH. IT FLIES ON THE NEXT DAILY RUN.`);
+      const r = await api.launch(ship.id, n);
+      try { localStorage.setItem('halcyon.launchSlot', String(n)); } catch { /* ignore */ }
+      toast(`SHIP #${ship.id} CLEARED FOR LAUNCH WITH SLOT ${n} (${r?.program_bytes ?? '?'} BYTES). IT FLIES ON THE NEXT DAILY RUN.`);
       await ctx.refresh();
     } catch (e) {
       toast(`LAUNCH FAILED: ${e.message}`, 'err');
@@ -34,11 +78,7 @@ export function fleetView(ctx) {
     const out = [];
     if (s.status === 'inventory') {
       out.push(btn('CODE', () => ctx.selectShip(s.id, 'code')));
-      out.push(btn('LAUNCH', () => launch(s), {
-        cls: 'primary',
-        disabled: s.program_bytes === 0,
-        title: s.program_bytes === 0 ? 'Upload a program first' : 'Launch on the next daily run',
-      }));
+      out.push(btn('LAUNCH', () => launch(s), { cls: 'primary', title: 'Choose a code slot and launch on the next daily run' }));
     }
     if (s.status === 'launching' || s.status === 'active') out.push(btn('UPLINK', () => ctx.selectShip(s.id, 'uplink')));
     if (s.downlink_day >= 0) out.push(btn('DOWNLINK', () => ctx.selectShip(s.id, 'downlink')));
@@ -72,13 +112,13 @@ export function fleetView(ctx) {
     h('aside', { class: 'panel brief' },
       h('div', { class: 'panel-title' }, 'MISSION BRIEF'),
       h('ol', { class: 'steps' },
-        step('1', 'WRITE', 'a flight program in the CODE editor. Your ship cannot be flown by hand.'),
-        step('2', 'SEAL', 'it into a docked ship. You can replace it until launch.'),
-        step('3', 'LAUNCH', 'the ship. It enters the belt on the next daily run and the program is fixed for good.'),
+        step('1', 'WRITE', 'a flight program in the CODE editor and save it in one of your 16 code slots. Your ship cannot be flown by hand.'),
+        step('2', 'TEST', 'it: assemble it in the editor, and improve it in as many slots as you like.'),
+        step('3', 'LAUNCH', 'the ship and choose which slot it flies. It enters the belt on the next daily run and the program is fixed for good.'),
         step('4', 'TALK', 'to it once a day: 1 KB up, 1 KB down, over the wormhole link.'),
       ),
-      h('p', { class: 'hint pad' }, 'The belt is simulated once a day. Ore delivered to the station earns credits.'),
-      h('p', { class: 'pad' }, h('a', { class: 'btn small', href: '/manual.txt', target: '_blank', rel: 'noopener' }, 'OPEN THE HC-33 MANUAL')),
+      h('p', { class: 'hint pad' }, 'The belt runs once a day. Ore delivered to the station earns credits.'),
+      h('p', { class: 'pad' }, h('a', { class: 'btn small', href: '/manual.pdf', target: '_blank', rel: 'noopener' }, 'OPEN THE HC-33 MANUAL (PDF)')),
     ),
   );
 }