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>

js/state.js

@@ -0,0 +1,153 @@
+// ═══ state.js ═══
+// ============================================================
+//  STATE.JS — Central game state, constants, definitions
+// ============================================================
+
+// ── ARENA ─────────────────────────────────────────────
+const ARENA_RADIUS = 400; // play area radius; enemies always spawn at this distance from tower
+const ARENA_CX = 665;    // center x of play area: (1600 - 270) / 2
+const ARENA_CY = 482;    // center y of play area: 64 + (900 - 64) / 2
+
+// ── INITIAL GAME STATE ────────────────────────────────────────
+function makeGameState() {
+  return {
+    credits: 150,
+    score: 0,
+    totalKills: 0,
+    frame: 0,
+    paused: false,
+    gameOver: false,
+    isBankrupt: false,
+    _isNewBest: false,
+    creditReserve: 50,   // minimum credits kept in reserve — cannot spend upgrades below this
+
+    // Tower
+    tower: {
+      hp: 20,
+      maxHp: 20,
+      armor: 0,
+      aimSpeed: 0.026,
+      range: 250,        // vision + targeting radius; enemies outside are in fog and untargetable
+      cannonAngle: 0,
+      weaponSlots: 1,
+      shield: null,
+      shieldHp: 0,
+      shieldMaxHp: 0,
+      shieldAngle: 0,
+      shieldUnlocked: [],
+    },
+
+    // Weapons: array of active weapon instances
+    weapons: [
+      makeWeaponInstance('cannon'),
+    ],
+
+    // Upgrade tracking
+    towerUpgradesBought: [],   // array of upgrade ids
+    weaponUpgradesBought: {},  // { weaponInstanceId: [upgradeIds] }
+    shieldUpgradesBought: [],  // upgrade ids for current shield
+
+    // Entities
+    enemies: [],
+    projectiles: [],
+    beams: [],
+    chainArcs: [],     // lightning bolt visuals
+    aoeZones: [],      // lingering AoE (poison clouds, freeze zones)
+    particles: [],
+    floaters: [],
+    portals: [],
+
+    // Portal system
+    portalCooldown: 0,
+
+    // Input state
+    selectedEnemyType: null,
+    sendQuantity: 1,
+
+    // Shop
+    shopOpen: false,
+    shopTab: 'tower',    // 'tower' | 'weapons' | weapon instance id
+    shopTreeWeapon: null,
+
+    // Entity id counter
+    nextId: 1,
+
+    // Kill streak
+    streak: { count: 0, lastKillFrame: -999 },
+
+    // Enemy freshness (novelty bonus) — higher = less fresh = less bonus
+    enemyFreshness: Object.fromEntries(ENEMY_DEFS.map(d => [d.id, 0])),
+  };
+}
+
+let G = makeGameState(); // global game state
+
+function countOwnedWeaponType(defId) {
+  let count = 0;
+  for (let i = 0; i < G.tower.weaponSlots; i++) {
+    const w = G.weapons[i];
+    if (w && w.defId === defId) count++;
+  }
+  for (const w of (G.weaponInventory || [])) {
+    if (w && w.defId === defId) count++;
+  }
+  return count;
+}
+
+function canBuyWeaponType(defId) {
+  return countOwnedWeaponType(defId) < MAX_WEAPONS_PER_TYPE;
+}
+
+function makeWeaponInstance(defId) {
+  const def = WEAPON_DEFS.find(w => w.id === defId);
+  if (!def) return null;
+  return {
+    instanceId: 'w_' + defId + '_' + Date.now(),
+    defId,
+    defaultElement: def.defaultElement ?? 'physical',
+    // Live stats (modified by upgrades)
+    damage: def.damage,
+    fireRate: def.fireRate,
+    range: def.range ?? 9999,
+    projectileSpeed: def.projectileSpeed ?? 6,
+    projectileRadius: def.projectileRadius ?? 4,
+    coneAngle: def.coneAngle ?? 0,
+    chains: def.chains ?? 0,
+    chainRange: def.chainRange ?? 0,
+    aoeRadius: def.aoeRadius ?? 0,
+    freezeDuration: def.freezeDuration ?? 0,
+    armorShred: def.armorShred ?? 0,
+    targets: def.targets ?? 1,
+    amplify: def.amplify ?? 0,
+    dotDamage: def.dotDamage ?? 0,
+    dotInterval: def.dotInterval ?? 0,
+    dotDuration: def.dotDuration ?? 0,
+    pierce: 0,
+    critChance: 0,
+    elements: [],             // no elements by default — must purchase infuse slots
+    targeting: def.targeting,
+    cooldown: 0,
+    aimAngle: -Math.PI / 2,
+    recoil: 0,
+    muzzleFlash: 0,
+    lastFireFrame: -9999,
+    canInfuse: false,
+    canInfuse2: false,
+    canInfuse3: false,
+  };
+}
+
+function getWeaponDef(instanceOrId) {
+  const id = typeof instanceOrId === 'string' ? instanceOrId : instanceOrId.defId;
+  return WEAPON_DEFS.find(w => w.id === id);
+}
+
+function getWeaponElements(weapon) {
+  const base = weapon.defaultElement || getWeaponDef(weapon)?.defaultElement || 'physical';
+  const elements = [...new Set([base, ...(weapon.elements || [])].filter(el => el && el !== 'physical'))];
+  return elements.length ? elements : ['physical'];
+}
+
+function uid() {
+  return G.nextId++;
+}