Initial commit: Siege Protocol

Inverted tower-defense browser game — deploy enemies yourself, tower auto-kills them, pocket credits, upgrade weapons. HTML + Canvas + vanilla JS, no build step. Co-Authored-By: claude-flow <ruv@ruv.net>
2026-06-16 11:36:53 -04:00
commit 622a9fd170
31 changed files with 6164 additions and 0 deletions
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+// ═══ inventory.js ═══
+// ============================================================
+//  INVENTORY — weapon picker state and equip helpers
+// ============================================================
+
+const MAX_WEAPON_SLOTS = 8;
+
+let _pickerSlot      = -1;
+let _pickerScrollY   = 0;
+let _pickerScrollMax = 0;
+
+function weaponUpgradeCount(w) {
+  return (G.weaponUpgradesBought[w.instanceId] || []).length;
+}
+
+function weaponElementLabel(w) {
+  return getWeaponElements(w)
+    .map(el => ELEMENTS[el]?.icon || '')
+    .join('');
+}
+
+function weaponStatRows(w) {
+  return [
+    ['DMG', w.damage],
+    ['RATE', w.fireRate + 'f'],
+    w.aoeRadius ? ['AOE', w.aoeRadius] : null,
+    w.targets && w.targets > 1 ? ['TARGETS', w.targets] : null,
+    w.pierce ? ['PIERCE', w.pierce] : null,
+    w.chains ? ['CHAINS', w.chains] : null,
+    ['TARGET', (w.targeting || 'nearest').toUpperCase()],
+  ].filter(Boolean);
+}
+
+function weaponUpgradeLabels(w) {
+  const bought = G.weaponUpgradesBought[w.instanceId] || [];
+  const tree = WEAPON_UPGRADE_TREES[w.defId] || [];
+  return bought.map(id => tree.find(u => u.id === id)?.label || id);
+}
+
+function openWeaponPicker(slotIndex) {
+  if (slotIndex >= G.tower.weaponSlots) return;
+  _pickerSlot    = slotIndex;
+  _pickerScrollY = 0;
+  setPaused(true, false);
+  document.body.classList.add('inventory-open');
+  G.weaponInventory = G.weaponInventory || [];
+}
+
+function closeWeaponPicker() {
+  document.body.classList.remove('inventory-open');
+  _pickerSlot    = -1;
+  _pickerScrollY = 0;
+  if (!G.shopOpen) setPaused(false);
+}
+
+function equipWeaponInstanceToSlot(slotIndex, instanceId) {
+  if (slotIndex >= G.tower.weaponSlots) return;
+  G.weaponInventory = G.weaponInventory || [];
+
+  const sourceSlot = G.weapons.slice(0, G.tower.weaponSlots).findIndex(w => w && w.instanceId === instanceId);
+  if (sourceSlot === slotIndex) return;
+
+  const displaced = G.weapons[slotIndex];
+  if (sourceSlot >= 0) {
+    G.weapons[slotIndex] = G.weapons[sourceSlot];
+    G.weapons[sourceSlot] = displaced || null;
+  } else {
+    const invIdx = G.weaponInventory.findIndex(w => w.instanceId === instanceId);
+    if (invIdx === -1) return;
+    const invWeapon = G.weaponInventory.splice(invIdx, 1)[0];
+    G.weapons[slotIndex] = invWeapon;
+    if (displaced) G.weaponInventory.push(displaced);
+  }
+
+  addLog(getWeaponDef(G.weapons[slotIndex]).name + ' equipped.', 'info');
+  updateHUD();
+}
+
+function removeWeaponFromSlot(slotIndex) {
+  if (slotIndex >= G.tower.weaponSlots) return;
+  const activeCount = G.weapons.slice(0, G.tower.weaponSlots).filter(w => w != null).length;
+  if (activeCount <= 1) { addLog('Cannot remove last weapon!', 'lose'); return; }
+  const w = G.weapons[slotIndex];
+  if (!w) return;
+  G.weaponInventory = G.weaponInventory || [];
+  G.weaponInventory.push(w);
+  G.weapons[slotIndex] = null;
+  addLog(getWeaponDef(w).name + ' moved to inventory.', 'info');
+  updateHUD();
+}
+
+function buyAndEquipWeapon(slotIndex, defId) {
+  const def = WEAPON_DEFS.find(w => w.id === defId);
+  if (!def || slotIndex >= G.tower.weaponSlots || spendableCredits() < def.cost) return;
+  if (!canBuyWeaponType(defId)) {
+    addLog(`${def.name} limit reached (${MAX_WEAPONS_PER_TYPE}/${MAX_WEAPONS_PER_TYPE}).`, 'lose');
+    return;
+  }
+  G.credits -= def.cost;
+  const instance = makeWeaponInstance(defId);
+  G.weaponUpgradesBought[instance.instanceId] = [];
+
+  const displaced = G.weapons[slotIndex];
+  G.weapons[slotIndex] = instance;
+  if (displaced) {
+    G.weaponInventory = G.weaponInventory || [];
+    G.weaponInventory.push(displaced);
+    addLog(`Purchased ${def.name}! Swapped previous weapon to inventory.`, 'win');
+  } else {
+    addLog(`Purchased ${def.name}!`, 'win');
+  }
+  updateHUD();
+}