Ammo economy: 25% less ammo per box, 25% fewer ammo drops

- AMMO_REFILL_SCALE 0.75 on ammoRefillFraction (smaller refills)
- AMMO_DROP_SCALE 0.75 on all three ammo spawn sites (room clear, elite,
  normal kill); help/gameplay drop-rate text updated; cache v=41

js/enemies.js

@@ -300,12 +300,12 @@ function killEnemy(e, ang) {
     spawnGems(e.x, e.y, gemVal);
     if (chance(0.18 + luck * 0.1)) {
       spawnPickup('item', e.x, e.y, { iid: rollItemId('elite', G.floor) });
-    } else if (chance(0.6 + luck * 0.2)) {
+    } else if (chance((0.6 + luck * 0.2) * AMMO_DROP_SCALE)) {
       spawnPickup('ammo', e.x, e.y);
     }
   } else {
     spawnGems(e.x, e.y, gemVal);
-    if (chance(0.07 + luck * 0.04)) {
+    if (chance((0.07 + luck * 0.04) * AMMO_DROP_SCALE)) {
       spawnPickup('ammo', e.x, e.y);
     } else if (chance(0.022 + luck * 0.03)) {
       spawnPickup('heart', e.x, e.y);

js/help.js

@@ -122,9 +122,9 @@ function drawHelpLoop(ctx, px, py) {
       'WAVES SPAWN 0.9S APART · INCOMING SPAWNS TELEGRAPH FOR 0.5S · CAP 72',
     ] },
     { head: 'DROPS (LUCK SCALES MOST CHANCES)', lines: [
-      'ROOM CLEAR: 3–5+FLOOR XP · 24%+LUCK×30% AMMO · 10%+LUCK×30% HEART',
-      'NORMAL KILL: 7%+LUCK×4% AMMO · 2.2%+LUCK×3% HEART',
-      'ELITE KILL: 3× XP + 3–5 GEMS · 18%+LUCK×10% ITEM · ELSE 60%+LUCK×20% AMMO',
+      'ROOM CLEAR: 3–5+FLOOR XP · 18%+LUCK×22.5% AMMO · 10%+LUCK×30% HEART',
+      'NORMAL KILL: 5.25%+LUCK×3% AMMO · 2.2%+LUCK×3% HEART',
+      'ELITE KILL: 3× XP + 3–5 GEMS · 18%+LUCK×10% ITEM · ELSE 45%+LUCK×15% AMMO',
     ] },
     { head: 'SCORE (× LIVE PRESSURE)', lines: [
       'KILL +10 · ELITE +40 · BOSS 500 + FLOOR × 100 · ROOM +50 · FLOOR +250',

js/pickups.js

@@ -25,14 +25,14 @@ function ammoRefillFraction(w) {
   const rateWeight = Math.log2(interval / 0.3);
   // Heavy, slow attacks push the fraction down; light, rapid attacks push it up.
   const heaviness = clamp((damageWeight + rateWeight) / 4, -1, 1);
-  return clamp(0.62 - heaviness * 0.28, 0.30, 0.88) * (w.ammoWeight || 1);
+  return clamp(0.62 - heaviness * 0.28, 0.30, 0.88) * (w.ammoWeight || 1) * AMMO_REFILL_SCALE;
 }
 
 // room-clear reward burst (weapons come from bosses / item rooms, not room clears)
 function spawnRoomReward(x, y, floor) {
   spawnGems(x, y, irand(3, 5 + floor));
   const luck = G.player.stats.luck;
-  if (chance(0.24 + luck * 0.3)) spawnPickup('ammo', x + rand(-30, 30), y + rand(-30, 30));
+  if (chance((0.24 + luck * 0.3) * AMMO_DROP_SCALE)) spawnPickup('ammo', x + rand(-30, 30), y + rand(-30, 30));
   if (chance(0.10 + luck * 0.3)) spawnPickup('heart', x + rand(-30, 30), y + rand(-30, 30));
 }
 

js/sfxbank.js

@@ -115,7 +115,7 @@ const SfxBank = {
     if (this.buffers.has(name) || this.pending.has(name) || this.failed.has(name)) return;
     const file = this.FILES[name];
     if (!file || !this.ctx || typeof fetch !== 'function') return;
-    const job = fetch('/assets/sfx/' + encodeURIComponent(file) + '?v=40')
+    const job = fetch('/assets/sfx/' + encodeURIComponent(file) + '?v=41')
       .then(r => { if (!r.ok) throw new Error('HTTP ' + r.status); return r.arrayBuffer(); })
       .then(bytes => this.ctx.decodeAudioData(bytes))
       .then(buffer => this.buffers.set(name, this.trim(buffer)))

js/sprites.js

@@ -84,7 +84,7 @@ const Sprites = {
       const img = new Image();
       img.onload = () => { this.imgs[name] = img; if (--pending === 0) G.imagesLoaded = true; };
       img.onerror = () => { if (--pending === 0) G.imagesLoaded = true; };
-      img.src = 'assets/' + name + '.png?v=40';
+      img.src = 'assets/' + name + '.png?v=41';
     }
   },
 

js/state.js

@@ -45,6 +45,9 @@ const G = {
 };
 
 const PERK_POWER_WEIGHT = 0.5;
+// ammo economy: global dials for refill size and drop frequency
+const AMMO_REFILL_SCALE = 0.75;
+const AMMO_DROP_SCALE = 0.75;
 const PRESSURE_MIN = 0.75, PRESSURE_MAX = 1.60;
 const PRESSURE_UNIT = 0.01;          // one "point" on the dial scale
 const PRESSURE_GAIN = PRESSURE_UNIT; // retained: dial 0 == 1 point