Diablo2D — Shadows of Tristram: complete browser ARPG

- Isometric canvas renderer (depth-sorted, FOV/fog, additive lighting) - 3 classes x 20 skills, 4 acts x 4 floors + boss lairs, torment I-X - Diablo-style loot: rarities, affix tiers, 14 legendaries, vendor, stash - Rogue camp with 6 NPCs: Charsi/Akara/Kashya/Cain/Gheed/storage - NPC quest chain (accept -> hunt -> turn in) with rewards & gating - Procedural WebAudio SFX + generative music, EN/VI localization - Saves, settings, waypoints, hardcore mode, PWA manifest - 93-assertion headless suite + browser E2E via CDP
2026-08-23 06:59:36 +00:00
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+/* ============================================================
+ * Diablo2D — entities.js : entity classes & spatial index
+ * ============================================================ */
+'use strict';
+window.D2 = window.D2 || {};
+(function (D2) {
+
+  let nextUid = 1;
+
+  /* ---------------- Player ---------------- */
+  class Player {
+    constructor(classId) {
+      this.uid = nextUid++;
+      this.kind = 'player';
+      this.classId = classId;
+      this.x = 0; this.y = 0;
+      this.radius = 0.34;
+      this.dead = false;
+
+      /* progression */
+      this.level = 1;
+      this.xp = 0;
+      this.gold = 60;
+      this.statPoints = 0;
+      this.skillPoints = 0;
+      this.attributes = { str: 0, dex: 0, vit: 0, ene: 0 }; // allocated points
+      this.skills = {};          // skillId -> rank
+      this.hotbar = ['basic', null, null, null, null]; // slot0=basic(LMB), 1=RMB, 2..4 keys
+      this.potions = { hp: 4, mp: 3 };
+      this.inventory = [];       // items
+      this.equip = { weapon: null, offhand: null, head: null, chest: null, hands: null, feet: null, amulet: null, ring1: null, ring2: null };
+
+      /* derived (recomputed) */
+      this.stats = {};
+      this.maxHp = 50; this.hp = 50;
+      this.maxMana = 20; this.mana = 20;
+
+      /* movement / anim */
+      this.moving = false;
+      this.walkPhase = 0;
+      this.attackAnim = 0;
+      this.hurtFlash = 0;
+      this.attackCd = 0;
+      this.channel = null;       // whirlwind/dash state
+      this.guaranteedCritT = 0;
+      this.smokeveilT = 0;
+
+      this.buffs = [];           // {id,name,icon,t,dur,mods}
+      this.dots = [];
+
+      /* run meta */
+      this.kills = 0;
+      this.eliteKills = 0;
+      this.bossKills = 0;
+      this.deaths = 0;
+    }
+  }
+
+  /* ---------------- Monster ---------------- */
+  class Monster {
+    constructor(statBlock, x, y) {
+      Object.assign(this, statBlock);
+      this.uid = nextUid++;
+      this.kind = 'monster';
+      this.x = x; this.y = y;
+      this.homeX = x; this.homeY = y;
+      this.dead = false;
+      this.dying = false;
+
+      /* ai state */
+      this.state = 'idle';       // idle | chase | windup | recover | charging | fleeing
+      this.aggro = false;
+      this.stateT = 0;
+      this.attackT = 0;          // windup progress
+      this.attackAnim = 0;
+      this.hurtFlash = 0;
+      this.cdT = 0;              // attack cooldown
+      this.specialCd = 0;
+      this.chargeVX = 0; this.chargeVY = 0;
+      this.path = null; this.pathIdx = 0; this.pathT = 0;
+      this.moving = false; this.speedFactor = 1;
+
+      /* statuses */
+      this.frozen = 0;
+      this.chillT = 0; this.chillSlow = 0;
+      this.dots = [];
+      this.regenAcc = 0;
+    }
+  }
+
+  /* ---------------- Projectile ---------------- */
+  const projectiles = [];
+  class Projectile {
+    constructor(o) {
+      Object.assign(this, {
+        x: 0, y: 0, vx: 0, vy: 0,
+        speed: 10, dmg: 5, elem: null,
+        fromPlayer: true,
+        pierce: false,
+        maxHits: 1,
+        hits: new Set(),
+        life: 2.2,
+        visual: 'bolt',
+        color: '#fff',
+        size: 1,
+        slow: 0, slowDur: 0,
+        bleed: false,
+        aoe: 0,
+        pool: false,
+        freeze: 0,
+        knockback: 0,
+        guaranteedCrit: false,
+        ownerSkillId: null,
+        z: 0,
+      }, o);
+      this.uid = nextUid++;
+      this.dead = false;
+    }
+  }
+
+  /* ---------------- Pickup ---------------- */
+  class Pickup {
+    constructor(kind, x, y, extra = {}) {
+      this.uid = nextUid++;
+      this.kind = kind;           // gold | potion | item
+      this.x = x; this.y = y;
+      this.amount = extra.amount || 0;
+      this.item = extra.item || null;
+      this.potionType = extra.potionType || null;
+      this.t = 0;                 // age (for pop animation)
+      this.magnet = false;
+    }
+  }
+
+  /* ---------------- Spatial hash for monsters ---------------- */
+  class Grid {
+    constructor(cell = 2.5) { this.cell = cell; this.map = new Map(); }
+    key(x, y) { return ((x / this.cell) | 0) + ',' + ((y / this.cell) | 0); }
+    rebuild(entities) {
+      this.map.clear();
+      for (const e of entities) {
+        if (e.dead) continue;
+        const k = this.key(e.x, e.y);
+        let arr = this.map.get(k);
+        if (!arr) { arr = []; this.map.set(k, arr); }
+        arr.push(e);
+      }
+    }
+    query(x, y, r, out = []) {
+      out.length = 0;
+      const c = this.cell;
+      const x0 = ((x - r) / c) | 0, x1 = ((x + r) / c) | 0;
+      const y0 = ((y - r) / c) | 0, y1 = ((y + r) / c) | 0;
+      for (let gy = y0; gy <= y1; gy++) {
+        for (let gx = x0; gx <= x1; gx++) {
+          const arr = this.map.get(gx + ',' + gy);
+          if (arr) for (const e of arr) {
+            const dx = e.x - x, dy = e.y - y;
+            if (dx * dx + dy * dy <= r * r) out.push(e);
+          }
+        }
+      }
+      return out;
+    }
+    nearest(x, y, maxR, filter) {
+      let best = null, bd = maxR * maxR;
+      const cand = this.query(x, y, maxR, []);
+      for (const e of cand) {
+        if (filter && !filter(e)) continue;
+        const d = (e.x - x) ** 2 + (e.y - y) ** 2;
+        if (d < bd) { bd = d; best = e; }
+      }
+      return best;
+    }
+  }
+
+  D2.entities = { Player, Monster, Projectile, Pickup, Grid };
+})(window.D2);