'use strict';
/* ============================================================
   NEON SURVIVORS — entities.js : entity classes & factories
   ============================================================ */

let _eid = 1;

/* ================= PLAYER ================= */
class Player {
  constructor(charId) {
    const c = CHARS[charId];
    this.charId = charId;
    this.sym = c.sym;
    this.col = c.col;
    // equipped cosmetic skin (owned only)
    try {
      const sel = Store.data.skinSel[charId];
      if (sel && Store.data.skinOwned[charId + ':' + sel]) {
        const def = skinsFor(charId).find(s => s.key === sel);
        if (def) this.col = def.col;
      }
    } catch (e) { /* headless tests / legacy saves */ }
    this.x = 0; this.y = 0;
    this.r = 13;
    this.faceX = 1; this.faceY = 0;

    this.level = 1;
    this.xp = 0;
    this.xpNext = this._xpFor(1);
    this.gold = 0;
    this.kills = 0;

    this.weapons = [{ id: c.weapon, lvl: 1, timer: 0.35 }];
    this.passives = {};
    this.rerollMax = 0;

    this.regenAcc = 0;
    this.invuln = 0;
    this.revives = 0;
    this.recompute();
    this.hp = this.maxhp;
  }

  _xpFor(level) {
    return Math.floor(10 + (level - 1) * 9 + Math.pow(level - 1, 1.9));
  }

  /** Recompute derived stats from meta shop + passives + character mods. */
  recompute() {
    const m = Store.data.meta;
    const rank = id => m[id] || 0;

    let dmgPct   = rank('might') * 0.05;
    let hpPct    = rank('hp') * 0.10;
    let armor    = rank('armor');
    let regen    = rank('regen') * 0.3;
    let movePct  = rank('spd') * 0.04;
    let cdr      = rank('cd') * 0.04;
    let growth   = rank('growth') * 0.06;
    let greed    = rank('greed') * 0.15;
    let luck     = rank('luck') * 0.10;
    let magMul   = 1 + rank('magnet') * 0.20;
    this.rerollMax = rank('reroll');

    // passives
    const pl = this.passives;
    dmgPct  += (pl.p_might || 0) * PASSIVES.p_might.val;
    armor   += (pl.p_armor || 0) * PASSIVES.p_armor.val;
    hpPct   += (pl.p_hp || 0) * PASSIVES.p_hp.val;
    regen   += (pl.p_regen || 0) * PASSIVES.p_regen.val;
    cdr     += (pl.p_cd || 0) * PASSIVES.p_cd.val;
    let areaPct  = (pl.p_area || 0) * PASSIVES.p_area.val;
    let pspdPct  = (pl.p_spd || 0) * PASSIVES.p_spd.val;
    let durPct   = (pl.p_dur || 0) * PASSIVES.p_dur.val;
    movePct += (pl.p_move || 0) * PASSIVES.p_move.val;
    let magPct   = (pl.p_mag || 0) * PASSIVES.p_mag.val;
    luck    += (pl.p_luck || 0) * PASSIVES.p_luck.val;
    greed   += (pl.p_greed || 0) * PASSIVES.p_greed.val;
    growth  += (pl.p_growth || 0) * PASSIVES.p_growth.val;

    // character modifiers
    const cm = CHARS[this.charId].mods;
    dmgPct  += cm.dmgMul || 0;
    hpPct   += cm.hpMul || 0;
    armor   += cm.armorFlat || 0;
    regen   += cm.regenFlat || 0;
    movePct += cm.moveMul || 0;
    cdr     += cm.cdrMul || 0;
    areaPct += cm.areaMul || 0;
    pspdPct += cm.pspdMul || 0;
    magPct  += cm.magMul || 0;
    luck    += cm.luckFlat || 0;
    greed   += cm.greedMul || 0;

    this.might   = Math.max(0.1, 1 + dmgPct);
    this.maxhp   = Math.round(100 * (1 + hpPct));
    this.armor   = armor;
    this.regen   = regen;
    this.spd     = 175 * (1 + movePct);
    this.cdrMul  = Math.max(0.40, 1 - cdr);
    this.areaMul = Math.max(0.2, 1 + areaPct);
    this.pspdMul = Math.max(0.2, 1 + pspdPct);
    this.durMul  = Math.max(0.2, 1 + durPct);
    this.magR    = 60 * magMul * (1 + magPct);
    this.luck    = Math.max(0, luck);
    this.greed   = Math.max(0, greed);
    this.growth  = Math.max(0, growth);
    this.critC   = 0.05 + (pl.p_luck ? pl.p_luck * 0.02 : 0) + (cm.critC || 0);
    this.critM   = 2.0 + (cm.critM || 0);

    if (this.hp > this.maxhp) this.hp = this.maxhp;
  }

  weaponById(id) { return this.weapons.find(w => w.id === id); }

  canOfferWeapon(id) {
    // not owned yet and there is a free slot
    return !this.weaponById(id) && this.weapons.length < 6 && !this.hasEvolvedBase(id);
  }
  hasEvolvedBase(baseId) {
    const into = WEAPONS[baseId] && WEAPONS[baseId].evo.into;
    return !!this.weaponById(into);
  }
  canLevelWeapon(id) {
    const w = this.weaponById(id);
    return w && w.lvl < WEAPONS[id].max;
  }
  canOfferPassive(id) {
    const cur = this.passives[id] || 0;
    if (cur >= PASSIVES[id].max) return false;
    if (cur > 0) return true;                       // already owned
    return Object.keys(this.passives).length < 6;   // free slot
  }

  addXp(amount) {
    this.xp += amount;
    let ups = 0;
    while (this.xp >= this.xpNext) {
      this.xp -= this.xpNext;
      this.level++;
      this.xpNext = this._xpFor(this.level);
      ups++;
    }
    return ups;
  }
}

/* ================= ENEMY ================= */
class Enemy {
  constructor(tid, x, y) {
    const d = BOSSES[tid] || ENEMIES[tid];
    this.id = _eid++;
    this.tid = tid;
    this.boss = !!BOSSES[tid];
    this.def = d;
    this.nk = d.nk;
    this.x = x; this.y = y;
    this.r = d.r;
    this.spd = d.spd;
    this.dmg = d.dmg;
    this.xpVal = d.xp;
    this.col = d.col;

    this.hp = d.hp; this.maxhp = d.hp;
    this.elite = false;
    this.slowT = 0; this.slowF = 1;
    this.freezeT = 0;
    this.burnT = 0; this.burnDps = 0;
    this.stunT = 0;
    this.kbx = 0; this.kby = 0;
    this.flash = 0;
    this.lastTouch = -99;
    this.shootT = rand(0.5, 1.8);
    this.aiT = rand(0, 2);
    this.state = 0;          // generic AI state
    this.wob = rand(TAU);    // wiggle phase
    this.rot = 0;
    this.dead = false;
  }

  get speedFactor() {
    if (this.freezeT > 0) return 0;
    return this.slowT > 0 ? 1 - this.slowF : 1;
  }

  applyElite(minute) {
    this.elite = true;
    this.hp *= 9; this.maxhp = this.hp;
    this.dmg *= 1.6;
    this.spd *= 0.92;
    this.r *= 1.55;
    this.xpVal *= 8;
  }

  scaleTo(minute, mult) {
    const s = diffScale(minute);
    const m = mult || 1;
    this.hp *= s.hp * m; this.maxhp = this.hp;
    this.dmg *= s.dmg * Math.sqrt(m);
    this.spd *= s.spd;
  }
}

/* ================= PROJECTILE ================= */
class Proj {
  constructor(o) { Object.assign(this, o); this.hits = new Set(); this.hitTimes = new Map(); this.t = 0; this.maxLife = this.life || 1; }
}

/* ================= ENEMY BULLET ================= */
class EBullet {
  constructor(x, y, vx, vy, dmg, col) {
    this.x = x; this.y = y; this.vx = vx; this.vy = vy;
    this.dmg = dmg; this.r = 6; this.life = 5; this.col = col || '#ffd24a';
  }
}

/* ================= PICKUP ================= */
class Pickup {
  constructor(type, x, y, val) {
    this.type = type;             // gem | coin | chicken | magnet | bomb | chest
    this.x = x; this.y = y;
    this.v = val || 1;
    this.r = type === 'chest' ? 16 : type === 'chicken' ? 12 : 7;
    this.vx = 0; this.vy = 0;
    this.t = rand(TAU);
    this.pull = false;
    this.dead = false;
    switch (type) {
      case 'gem': this.col = val >= 25 ? '#ff5fd0' : val >= 5 ? '#57e8ff' : '#69ff8c'; break;
      case 'coin': this.col = '#ffd24a'; break;
      case 'chicken': this.col = '#ff9d5c'; break;
      default: this.col = '#ffffff';
    }
  }
}

/* ================= PARTICLE / FLOATING TEXT / EFFECT ================= */
/** Resettable particle — pooled via part(G,...) to avoid GC churn. */
class Particle {
  constructor(x, y, col, opts) { this.set(x, y, col, opts || {}); }
  set(x, y, col, o) {
    this.x = x; this.y = y;
    const a = o.ang !== undefined ? o.ang : rand(TAU);
    const sp = o.sp !== undefined ? o.sp : rand(30, 160);
    this.vx = Math.cos(a) * sp; this.vy = Math.sin(a) * sp;
    this.life = this.maxLife = o.life || rand(0.25, 0.6);
    this.size = o.size || rand(2, 4.5);
    this.col = col;
    this.grav = o.grav || 0;
    this.drag = o.drag !== undefined ? o.drag : 0.94;
    return this;
  }
}

class FText {
  /**
   * Floating combat text.
   * extra: { life, vy, pop } — pop = scale-punch on spawn (crits, heals).
   */
  constructor(x, y, txt, col, big, extra) {
    this.x = x + rand(-6, 6); this.y = y;
    this.txt = txt; this.col = col || '#fff';
    this.big = big || false;
    extra = extra || {};
    this.life = extra.life || 0.75;
    this.maxLife = this.life;
    this.vy = extra.vy !== undefined ? extra.vy : 34;
    this.pop = extra.pop || (big ? 1.7 : 1);
    this.t = 0;
  }
}

class Effect {
  constructor(type, x, y, dur, data) {
    this.type = type; this.x = x; this.y = y;
    this.t = 0; this.dur = dur;
    this.data = data || {};
    this.dead = false;
  }
}