"use strict";
function makeName(worldRef = null) {
  const existing = new Set((worldRef?.tarinai || []).filter(t => !t.dead).map(t => t.name));
  const build = () => {
    const len = randi(2, 7);
    const hasStop = len >= 2 && Math.random() < 0.30;
    const middleLen = Math.max(0, len - 1 - (hasStop ? 1 : 0));
    let name = "\u306f";
    for (let i = 0; i < middleLen; i++) name += Math.random() < 0.64 ? "\u3046" : "\u3045";
    if (hasStop) name += "\u3063";
    return name;
  };
  for (let i = 0; i < 80; i++) {
    const candidate = build();
    if (!existing.has(candidate)) return candidate;
  }
  return build();
}

function spawnableSprites() {
  return SPRITES.filter(s => !s.actionOnly && !s.displayOnly);
}

function displayNormalSprites() {
  return ["smile", "jito", "normal_smirk"].filter(id => SPRITES.some(s => s.id === id));
}

function lowStressSprites() {
  return ["normal_tongue", "normal_happy"].filter(id => SPRITES.some(s => s.id === id));
}

function stableChoice(seed, salt, options) {
  if (!options?.length) return null;
  const i = Math.min(options.length - 1, Math.floor(stableUnit(seed, salt) * options.length));
  return options[i];
}

function baseSpriteId() {
  return pick(spawnableSprites()).id;
}

function makeTrait(type) {
  const base = {
    smile:   { hunger: 0.92, social: 1.14, sleep: 1.00, stress: 0.82, speed: 1.02 },
    angry:   { hunger: 1.05, social: 0.84, sleep: 0.94, stress: 1.24, speed: 1.15 },
    teary:   { hunger: 0.96, social: 1.22, sleep: 1.04, stress: 1.12, speed: 0.96 },
    jito:    { hunger: 0.88, social: 0.80, sleep: 0.96, stress: 0.80, speed: 0.98 },
    drool:   { hunger: 1.30, social: 1.02, sleep: 1.04, stress: 0.98, speed: 1.00 },
    cry:     { hunger: 1.00, social: 1.30, sleep: 1.12, stress: 1.36, speed: 0.90 },
    sleep:   { hunger: 0.78, social: 0.88, sleep: 1.44, stress: 0.72, speed: 0.70 },
    pokan:   { hunger: 1.02, social: 1.02, sleep: 1.02, stress: 1.06, speed: 0.88 },
    stretch: { hunger: 1.08, social: 0.90, sleep: 0.92, stress: 1.08, speed: 1.26 },
  }[type] || { hunger: 1, social: 1, sleep: 1, stress: 1, speed: 1 };
  return { ...base };
}

function stableUnit(seed, salt = "") {
  const str = `${seed}:${salt}`;
  let h = 2166136261;
  for (let i = 0; i < str.length; i++) {
    h ^= str.charCodeAt(i);
    h = Math.imul(h, 16777619);
  }
  return ((h >>> 0) % 100000) / 100000;
}

const GENETIC_KEYS = ["lifeSpanMul", "attackMul", "speedMul", "sizeMul"];
const GENETIC_LIMITS = Object.freeze({
  lifeSpanMul: [0.82, 1.24],
  attackMul: [0.80, 1.24],
  speedMul: [0.86, 1.18],
  sizeMul: [0.84, 1.18],
});

function clampGeneticValue(key, value) {
  const range = GENETIC_LIMITS[key] || [0.75, 1.25];
  return clamp(Number(value) || 1, range[0], range[1]);
}

function randomGenetics(seed = "") {
  return {
    lifeSpanMul: clampGeneticValue("lifeSpanMul", 0.82 + stableUnit(seed, "gene-life") * 0.42),
    attackMul: clampGeneticValue("attackMul", 0.80 + stableUnit(seed, "gene-attack") * 0.44),
    speedMul: clampGeneticValue("speedMul", 0.86 + stableUnit(seed, "gene-speed") * 0.32),
    sizeMul: clampGeneticValue("sizeMul", 0.84 + stableUnit(seed, "gene-size") * 0.34),
  };
}

function normalizeGenetics(source = null, seed = "") {
  const fallback = randomGenetics(seed);
  const out = {};
  for (const key of GENETIC_KEYS) out[key] = clampGeneticValue(key, source?.[key] ?? fallback[key]);
  return out;
}

function inheritedGenetics(a, b, seed = "") {
  const ga = normalizeGenetics(a?.genetics, a?.familyKey || a?.id || "a");
  const gb = normalizeGenetics(b?.genetics, b?.familyKey || b?.id || "b");
  const out = {};
  for (const key of GENETIC_KEYS) {
    const base = ((ga[key] || 1) + (gb[key] || 1)) / 2;
    const mutation = (stableUnit(seed, `gene-mut-${key}`) - 0.5) * 0.10;
    out[key] = clampGeneticValue(key, base + mutation);
  }
  return out;
}

function adultScaleFromGenetics(seed = "", genetics = null) {
  const g = normalizeGenetics(genetics, seed);
  return clamp((0.265 + stableUnit(seed, "adult-scale") * 0.060) * g.sizeMul, 0.205, 0.390);
}

function childGrowthScaleFactor(growth = 1) {
  const x = clamp(Number(growth) || 0, 0, 1);
  const smooth = x * x * (3 - 2 * x);
  return 0.46 + smooth * 0.54;
}

function scaleForGrowth(adultScale = 0.28, growth = 1) {
  return clamp((Number(adultScale) || 0.28) * childGrowthScaleFactor(growth), 0.10, 0.42);
}


function tarinaiBodySizeRatio(tarinai = null) {
  const baseScale = 0.28;
  let effectiveScale = Number(tarinai?.scale);
  if (tarinai && typeof tarinai.effectiveScale === "function") effectiveScale = Number(tarinai.effectiveScale());
  if (!Number.isFinite(effectiveScale) || effectiveScale <= 0) effectiveScale = baseScale;
  return clamp(effectiveScale / baseScale, 0.28, 3.25);
}

function tarinaiMaxEnergy(tarinai = null) {
  return Math.round(clamp(100 * tarinaiBodySizeRatio(tarinai), 28, 240));
}

function clampTarinaiEnergy(tarinai = null) {
  if (!tarinai) return 100;
  const max = tarinaiMaxEnergy(tarinai);
  tarinai.maxEnergy = max;
  tarinai.energy = clamp(Number(tarinai.energy) || 0, 0, max);
  return max;
}

function tarinaiEnergyRatio(tarinai = null) {
  const max = Math.max(1, typeof tarinaiMaxEnergy === "function" ? tarinaiMaxEnergy(tarinai) : (Number(tarinai?.maxEnergy) || 100));
  return clamp((Number(tarinai?.energy) || 0) / max, 0, 1);
}

function tarinaiMetabolicHungerScale(tarinai = null) {
  if (!tarinai) return 1;
  const attack = Math.max(0.15, typeof tarinai.outgoingDamage === "function" ? tarinai.outgoingDamage(1) : (tarinai.geneticStatRatio ? tarinai.geneticStatRatio("attack") : (Number(tarinai.genetics?.attackMul) || 1)));
  const speed = Math.max(0.15, (tarinai.geneticStatRatio ? tarinai.geneticStatRatio("speed") : (Number(tarinai.genetics?.speedMul) || 1)) * (tarinai.itemSpeedMultiplier ? tarinai.itemSpeedMultiplier() : 1));
  const size = tarinaiBodySizeRatio(tarinai);
  return clamp(attack * speed * size, 0.18, 8.0);
}

const PERSONALITIES = Object.freeze({});
const PERSONALITY_IDS = [];
const PERSONALITY_KEYS = ["aggression", "openness", "sociability", "neuroticism"];
const PERSONALITY_DAILY_LIMIT = { perAxis: 0.08, total: 0.20 };
const FRIEND_AFFINITY_THRESHOLD = 14;
const PERSONALITY_LABELS = {
  aggression: { label: "\u653b\u6483\u6027", low: "\u304a\u3060\u3084\u304b", high: "\u6012\u308a\u3063\u307d\u3044" },
  openness: { label: "\u958b\u653e\u6027", low: "\u4fdd\u5b88\u7684", high: "\u904a\u3073\u597d\u304d" },
  sociability: { label: "\u793e\u4ea4\u6027", low: "\u4e00\u4eba\u597d\u304d", high: "\u4ef2\u9593\u597d\u304d" },
  neuroticism: { label: "\u795e\u7d4c\u8cea\u6027", low: "\u7121\u9813\u7740", high: "\u7e4a\u7d30" },
};

function clampPersonalityValue(value) {
  return clamp(Number(value) || 0, -1, 1);
}

function normalizePersonality(source = null) {
  const out = {};
  for (const key of PERSONALITY_KEYS) out[key] = clampPersonalityValue(source?.[key]);
  return out;
}

function zunchiSlavePersonalityValue() {
  const out = {};
  for (const key of PERSONALITY_KEYS) out[key] = -1;
  return out;
}

function applyZunchiSlavePersonality(tarinai, opts = {}) {
  if (!tarinai) return false;
  const next = zunchiSlavePersonalityValue();
  let changed = false;
  tarinai.birthPersonality = normalizePersonality(tarinai.birthPersonality || next);
  tarinai.currentPersonality = normalizePersonality(tarinai.currentPersonality || next);
  for (const key of PERSONALITY_KEYS) {
    if ((tarinai.currentPersonality[key] || 0) !== -1) changed = true;
    tarinai.currentPersonality[key] = -1;
    if (opts.birth) tarinai.birthPersonality[key] = -1;
  }
  tarinai.personalityDaily = { day: tarinai.world?.day || 1, total: 0, byKey: {}, byCause: {} };
  if (changed && opts.record !== false) tarinai.recordChangeCause?.("\u305a\u3093\u3061\u3069\u308c\u3044\u5316", "\u6027\u683c", { value: -1 });
  return changed;
}

function randomBirthPersonality(seed = "") {
  const out = {};
  for (const key of PERSONALITY_KEYS) out[key] = clampPersonalityValue(stableUnit(seed, `personality-${key}`) * 1.2 - 0.6);
  return out;
}

function personalityFromParents(a, b) {
  const pa = ensurePersonality(a).currentPersonality;
  const pb = ensurePersonality(b).currentPersonality;
  const out = {};
  for (const key of PERSONALITY_KEYS) out[key] = clampPersonalityValue(((pa[key] || 0) + (pb[key] || 0)) / 2 + rand(-0.2, 0.2));
  return out;
}

function getTraitStrength(value) {
  const v = clampPersonalityValue(value);
  if (v >= 0.75) return { direction: 1, strength: "strong" };
  if (v >= 0.5) return { direction: 1, strength: "slight" };
  if (v <= -0.75) return { direction: -1, strength: "strong" };
  if (v <= -0.5) return { direction: -1, strength: "slight" };
  return { direction: 0, strength: "neutral" };
}

function personalityBand(value) {
  const t = getTraitStrength(value);
  return t.direction === 0 ? "neutral" : `${t.direction > 0 ? "high" : "low"}-${t.strength}`;
}

function personalityEffectValue(value) {
  const trait = getTraitStrength(value);
  if (!trait.direction) return 0;
  return trait.direction * (trait.strength === "strong" ? 1 : 0.5);
}

function effectivePersonalityValue(tarinai, key) {
  const p = ensurePersonality(tarinai).currentPersonality;
  const base = clampPersonalityValue(p[key]);
  const moodDelta = clampPersonalityValue(tarinai?.world?.colonyMood?.effects?.personality?.[key] || 0);
  return clampPersonalityValue(base + moodDelta);
}

function personalityReasonText(reason = "") {
  const key = String(reason || "").replace(/[.\u3002]+$/g, "").trim();
  const map = {
    "after winning fights": "\u55a7\u5629\u306b\u52dd\u3063\u305f\u5f71\u97ff\u3067",
    "after losing fights": "\u55a7\u5629\u306b\u8ca0\u3051\u305f\u5f71\u97ff\u3067",
    "after being petted": "\u64ab\u3067\u3089\u308c\u305f\u5f71\u97ff\u3067",
    "after staying near family": "\u89aa\u5b50\u306e\u8fd1\u304f\u3067\u904e\u3054\u3057\u305f\u5f71\u97ff\u3067",
    "after staying near friends": "\u53cb\u9054\u306e\u8fd1\u304f\u3067\u904e\u3054\u3057\u305f\u5f71\u97ff\u3067",
    "after having no friends": "\u53cb\u9054\u304c\u3044\u306a\u3044\u6642\u9593\u304c\u7d9a\u3044\u305f\u5f71\u97ff\u3067",
    "after repeated contact with poop": "\u305a\u3093\u3061\u306b\u6163\u308c\u305f\u5f71\u97ff\u3067",
    "after repeated contact with corpses": "\u6b7b\u9ab8\u306b\u6163\u308c\u305f\u5f71\u97ff\u3067",
    "after being hurt": "\u75db\u307f\u3092\u899a\u3048\u305f\u5f71\u97ff\u3067",
    "after ammo knockback": "\u5f3e\u85ac\u3067\u5f3e\u304d\u98db\u3070\u3057\u305f\u5f71\u97ff\u3067",
    "after successful intimidation": "\u5a01\u5687\u306b\u6210\u529f\u3057\u305f\u5f71\u97ff\u3067",
    "after failed intimidation": "\u5a01\u5687\u306b\u5931\u6557\u3057\u305f\u5f71\u97ff\u3067",
    "after being struck by genkotsu": "\u3052\u3093\u3053\u3064\u3092\u53d7\u3051\u305f\u5f71\u97ff\u3067",
  };
  return map[key] || key;
}

function personalityBecomeText(label = "") {
  const text = String(label || "");
  if (text === "\u6012\u308a\u3063\u307d\u3044") return "\u6012\u308a\u3063\u307d\u304f";
  return text;
}

function personalityAppearanceText(label = "") {
  const text = String(label || "");
  if (text === "\u6012\u308a\u3063\u307d\u3044") return "\u6012\u308a\u3063\u307d\u3044\u69d8\u5b50";
  return `${text}\u306a\u69d8\u5b50`;
}

function getPersonalityTraitTags(tarinai) {
  const p = ensurePersonality(tarinai).currentPersonality;
  const tags = [];
  for (const key of PERSONALITY_KEYS) {
    const trait = getTraitStrength(effectivePersonalityValue(tarinai, key));
    if (!trait.direction) continue;
    const label = PERSONALITY_LABELS[key]?.[trait.direction > 0 ? "high" : "low"] || key;
    tags.push(trait.strength === "slight" ? `\u5c11\u3057${label}` : label);
  }
  const cowardly = effectivePersonalityValue(tarinai, "neuroticism") >= 0.75 && effectivePersonalityValue(tarinai, "aggression") <= -0.5;
  if (cowardly && !tags.includes("\u81c6\u75c5")) tags.push("\u81c6\u75c5");
  return tags;
}

function personalityDailyState(tarinai) {
  const day = tarinai?.world?.day || 1;
  const state = tarinai.personalityDaily || {};
  if (state.day !== day) {
    tarinai.personalityDaily = { day, total: 0, byKey: {}, byCause: {} };
    return tarinai.personalityDaily;
  }
  state.byKey = state.byKey || {};
  for (const key of Object.keys(state.byKey)) {
    const v = state.byKey[key];
    if (typeof v === "number") state.byKey[key] = { up: Math.max(0, v), down: Math.max(0, -v), causes: [] };
    else {
      const causes = Array.isArray(v?.causes) ? [...new Set(v.causes.map(c => String(c || "").trim()).filter(Boolean))].slice(0, 4) : [];
      state.byKey[key] = { up: Math.max(0, Number(v?.up) || 0), down: Math.max(0, Number(v?.down) || 0), causes };
    }
  }
  state.byCause = state.byCause && typeof state.byCause === "object" ? state.byCause : {};
  for (const cause of Object.keys(state.byCause)) {
    const entry = state.byCause[cause] || {};
    const byKey = entry.byKey && typeof entry.byKey === "object" ? entry.byKey : {};
    const nextByKey = {};
    for (const key of PERSONALITY_KEYS) {
      const v = byKey[key] || {};
      const up = Math.max(0, Number(v.up) || 0);
      const down = Math.max(0, Number(v.down) || 0);
      if (up > 0.0001 || down > 0.0001) nextByKey[key] = { up, down };
    }
    if (Object.keys(nextByKey).length) state.byCause[cause] = { byKey: nextByKey };
    else delete state.byCause[cause];
  }
  state.total = Math.max(0, Number(state.total) || 0);
  tarinai.personalityDaily = state;
  return state;
}

function ensurePersonality(tarinai) {
  if (!tarinai) return { birthPersonality: normalizePersonality(), currentPersonality: normalizePersonality() };
  if (!tarinai.birthPersonality) tarinai.birthPersonality = randomBirthPersonality(tarinai.id || Math.random());
  tarinai.birthPersonality = normalizePersonality(tarinai.birthPersonality);
  tarinai.currentPersonality = normalizePersonality(tarinai.currentPersonality || tarinai.birthPersonality);
  personalityDailyState(tarinai);
  return { birthPersonality: tarinai.birthPersonality, currentPersonality: tarinai.currentPersonality };
}

function personalityThresholdLogText(tarinai, key, value, reason = "", previousBand = "") {
  const trait = getTraitStrength(value);
  const name = tarinai?.name || "\u305f\u308a\u306a\u3044";
  if (!trait.direction) {
    const oldSide = String(previousBand).startsWith("low") ? "low" : "high";
    const oldLabel = PERSONALITY_LABELS[key]?.[oldSide] || key;
    return `\u300c${name}\u300d\u306f${personalityAppearanceText(oldLabel)}\u304c\u76ee\u7acb\u305f\u306a\u304f\u306a\u3063\u305f\u3002`;
  }
  const label = PERSONALITY_LABELS[key]?.[trait.direction > 0 ? "high" : "low"] || key;
  const visible = trait.strength === "slight" ? `\u5c11\u3057${personalityBecomeText(label)}` : personalityBecomeText(label);
  const prefix = personalityReasonText(reason);
  return `\u300c${name}\u300d\u306f${prefix ? `${prefix}\u3001` : ""}${visible}\u306a\u3063\u305f\u3002`;
}

function adjustPersonality(tarinai, key, delta, reason = "") {
  if (!tarinai || !PERSONALITY_KEYS.includes(key)) return 0;
  ensurePersonality(tarinai);
  const requested = Number(delta) || 0;
  if (!requested) return 0;
  const state = personalityDailyState(tarinai);
  const dir = Math.sign(requested);
  const used = state.byKey[key] || { up: 0, down: 0 };
  const dirKey = dir > 0 ? "up" : "down";
  const keyRoom = Math.max(0, PERSONALITY_DAILY_LIMIT.perAxis - (used[dirKey] || 0));
  const totalRoom = Math.max(0, PERSONALITY_DAILY_LIMIT.total - (state.total || 0));
  const allowed = Math.min(Math.abs(requested), keyRoom, totalRoom);
  if (allowed <= 0) return 0;
  const before = tarinai.currentPersonality[key] || 0;
  const beforeBand = personalityBand(before);
  const applied = dir * allowed;
  const after = clampPersonalityValue(before + applied);
  const actual = after - before;
  if (!actual) return 0;
  tarinai.currentPersonality[key] = after;
  state.byKey[key] = used;
  if (!Array.isArray(used.causes)) used.causes = [];
  used[actual > 0 ? "up" : "down"] = (used[actual > 0 ? "up" : "down"] || 0) + Math.abs(actual);
  state.total = (state.total || 0) + Math.abs(actual);
  const label = PERSONALITY_LABELS[key]?.label || key;
  const reasonText = personalityReasonText(reason) || "\u6027\u683c\u5909\u5316";
  if (reasonText && !used.causes.includes(reasonText)) used.causes.push(reasonText);
  if (used.causes.length > 4) used.causes.length = 4;
  if (reasonText) {
    state.byCause = state.byCause && typeof state.byCause === "object" ? state.byCause : {};
    const causeEntry = state.byCause[reasonText] || { byKey: {} };
    causeEntry.byKey = causeEntry.byKey && typeof causeEntry.byKey === "object" ? causeEntry.byKey : {};
    const causeKeyEntry = causeEntry.byKey[key] || { up: 0, down: 0 };
    causeKeyEntry[actual > 0 ? "up" : "down"] = (causeKeyEntry[actual > 0 ? "up" : "down"] || 0) + Math.abs(actual);
    causeEntry.byKey[key] = causeKeyEntry;
    state.byCause[reasonText] = causeEntry;
  }
  tarinai.recordChangeCause?.(reasonText, label, { value: actual });
  const afterBand = personalityBand(after);
  if (beforeBand !== afterBand) {
    const text = personalityThresholdLogText(tarinai, key, after, reason, beforeBand);
    tarinai.world?.log?.(text, "observe");
    tarinai.addRecord?.(text, "observe");
  }
  return actual;
}

function shouldApplyPersonalityBehavior(tarinai, key, direction = 1) {
  const trait = getTraitStrength(effectivePersonalityValue(tarinai, key));
  if (trait.direction !== Math.sign(direction || 1)) return false;
  return trait.strength === "strong" || Math.random() < 0.5;
}

function relationDefaults() {
  return { affinity: 0, fear: 0, fightsWon: 0, fightsLost: 0, lastEvent: "", lastTime: 0 };
}

function relationDisplayName(worldRef, id) {
  if (!id) return "\u306a\u3057";
  const live = worldRef?.tarinai?.find(t => t.id === id || t.familyKey === id);
  if (live) return live.name;
  const fam = worldRef?.family?.[id];
  return fam?.name || "\u4e0d\u660e";
}

class Effect {
  constructor(type, x, y, options = {}) {
    this.type = type;
    this.x = x;
    this.y = y;
    this.vx = options.vx ?? rand(-10, 10);
    this.vy = options.vy ?? rand(-10, 10);
    this.size = options.size ?? rand(3, 8);
    this.life = options.life ?? 0.7;
    this.maxLife = this.life;
    this.color = options.color || "#fff4a8";
    this.seed = Math.random() * 1000;
    this.text = options.text || "";
  }

  update(dt) {
    this.life -= dt;
    this.x += this.vx * dt;
    this.y += this.vy * dt;
    this.vx *= Math.pow(0.92, dt * 60);
    this.vy *= Math.pow(0.92, dt * 60);
  }
  get dead() { return this.life <= 0; }

  draw(ctx) {
    const alpha = clamp(this.life / this.maxLife, 0, 1);
    ctx.save();
    ctx.globalAlpha = alpha;
    ctx.translate(this.x, this.y);
    if (this.type === "eat") {
      ctx.fillStyle = this.color;
      ctx.strokeStyle = "rgba(143, 111, 43, 0.7)";
      ctx.lineWidth = 1.2;
      ctx.beginPath();
      ctx.arc(0, 0, this.size, 0, Math.PI * 2);
      ctx.fill();
      ctx.stroke();
    } else if (this.type === "bleed") {
      ctx.fillStyle = this.color;
      ctx.beginPath();
      ctx.ellipse(0, 0, this.size * 1.25, this.size * 0.72, this.seed, 0, Math.PI * 2);
      ctx.fill();
    } else if (this.type === "heart") {
      const s = this.size * (0.80 + (1 - alpha) * 0.36);
      ctx.rotate(Math.sin(this.seed + (1 - alpha) * 3.2) * 0.18);
      drawHeartShape(ctx, 0, 0, s, { fill: this.color || "rgba(240,91,135,0.92)", stroke: "rgba(255,252,246,0.88)", alpha: 1 });
    } else if (this.type === "ring") {
      ctx.strokeStyle = this.color;
      ctx.lineWidth = 2;
      ctx.beginPath();
      ctx.arc(0, 0, this.size + (1 - alpha) * 18, 0, Math.PI * 2);
      ctx.stroke();
    } else if (this.type === "fight") {
      ctx.lineCap = "round";
      ctx.lineJoin = "round";
      const puffColor = this.color || "rgba(105, 62, 34, 0.86)";
      ctx.fillStyle = puffColor;
      ctx.strokeStyle = puffColor;
      for (let i = 0; i < 4; i++) {
        const a = this.seed + i * 1.55;
        const px = Math.cos(a) * this.size * randSeed(this.seed + i, 0.10, 0.72);
        const py = Math.sin(a) * this.size * randSeed(this.seed + i + 8, 0.08, 0.48);
        ctx.globalAlpha = alpha * (0.26 + i * 0.08);
        ctx.beginPath();
        ctx.ellipse(px, py, this.size * randSeed(this.seed + i + 20, 0.18, 0.34), this.size * randSeed(this.seed + i + 40, 0.10, 0.22), a, 0, Math.PI * 2);
        ctx.fill();
      }
      ctx.globalAlpha = alpha * 0.78;
      ctx.lineWidth = 2.0;
      for (let i = 0; i < 2; i++) {
        const dir = i === 0 ? -1 : 1;
        const y = dir * this.size * 0.14;
        ctx.beginPath();
        ctx.moveTo(-this.size * 0.62, y);
        ctx.quadraticCurveTo(-this.size * 0.12, y - dir * this.size * 0.42, this.size * 0.54, y + dir * this.size * 0.06);
        ctx.stroke();
      }
    } else if (this.type === "fall") {
      ctx.fillStyle = this.color || "rgba(154, 124, 80, 0.62)";
      for (let i = 0; i < 5; i++) {
        const a = this.seed + i * 1.37;
        const rr = this.size * randSeed(this.seed + i, 0.18, 0.82);
        const px = Math.cos(a) * rr;
        const py = Math.sin(a) * rr * 0.42;
        ctx.globalAlpha = alpha * randSeed(this.seed + i + 9, 0.18, 0.42);
        ctx.beginPath();
        ctx.ellipse(px, py, this.size * randSeed(this.seed + i + 20, 0.16, 0.34), this.size * randSeed(this.seed + i + 30, 0.08, 0.18), a, 0, Math.PI * 2);
        ctx.fill();
      }
    } else if (this.type === "explosion") {
      const burst = 1 - alpha;
      ctx.globalAlpha = alpha * 0.95;
      for (let i = 0; i < 3; i++) {
        ctx.strokeStyle = i === 0 ? "rgba(255,238,145,0.92)" : (i === 1 ? "rgba(255,128,66,0.68)" : "rgba(96,62,42,0.42)");
        ctx.lineWidth = Math.max(2, this.size * (0.09 - i * 0.018));
        ctx.beginPath();
        ctx.arc(0, 0, this.size * (0.28 + burst * (0.78 + i * 0.22)), 0, Math.PI * 2);
        ctx.stroke();
      }
      ctx.fillStyle = "rgba(255,214,86,0.88)";
      for (let i = 0; i < 14; i++) {
        const a = this.seed + i * 0.73;
        const r = this.size * burst * randSeed(this.seed + i, 0.28, 1.00);
        ctx.globalAlpha = alpha * randSeed(this.seed + i + 4, 0.36, 0.88);
        ctx.beginPath();
        ctx.arc(Math.cos(a) * r, Math.sin(a) * r, randSeed(this.seed + i + 12, 2.2, 5.2), 0, Math.PI * 2);
        ctx.fill();
      }
    } else if (this.type === "wind") {
      const drift = 1 - alpha;
      ctx.strokeStyle = this.color || "rgba(160,210,245,0.30)";
      ctx.lineWidth = Math.max(1.2, this.size * 0.12);
      ctx.lineCap = "round";
      for (let i = 0; i < 3; i++) {
        const y = (i - 1) * this.size * 0.28 + Math.sin(this.seed + i) * 2;
        const x0 = -this.size * (0.55 + i * 0.08) + drift * this.size * 0.55;
        const x1 = this.size * (0.72 + i * 0.12) + drift * this.size * 0.85;
        ctx.globalAlpha = alpha * (0.22 + i * 0.08);
        ctx.beginPath();
        ctx.moveTo(x0, y);
        ctx.quadraticCurveTo(0, y - this.size * 0.22, x1, y);
        ctx.stroke();
      }
    } else if (this.type === "zunchi_miasma") {
      const drift = 1 - alpha;
      ctx.globalCompositeOperation = "source-over";
      ctx.fillStyle = this.color || "rgba(16,78,28,0.62)";
      for (let i = 0; i < 5; i++) {
        const a = this.seed + i * 1.41 + drift * 1.8;
        const px = Math.cos(a) * this.size * randSeed(this.seed + i, 0.08, 0.62);
        const py = Math.sin(a * 0.8) * this.size * randSeed(this.seed + i + 7, 0.05, 0.42) - drift * this.size * 0.42;
        ctx.globalAlpha = alpha * randSeed(this.seed + i + 14, 0.10, 0.28);
        ctx.beginPath();
        ctx.ellipse(px, py, this.size * randSeed(this.seed + i + 21, 0.22, 0.46), this.size * randSeed(this.seed + i + 35, 0.16, 0.38), a, 0, Math.PI * 2);
        ctx.fill();
      }
    } else if (this.type === "bubble") {
      const w = Math.max(30, 14 + this.text.length * 7);
      const h = 20;
      ctx.globalAlpha = Math.min(1, alpha * 1.25);
      ctx.fillStyle = "rgba(255, 252, 240, 0.92)";
      ctx.strokeStyle = "rgba(78, 64, 48, 0.22)";
      ctx.lineWidth = 1.2;
      roundedRect(ctx, -w / 2, -h, w, h, 9);
      ctx.fill();
      ctx.stroke();
      ctx.fillStyle = "rgba(255, 252, 240, 0.92)";
      ctx.beginPath();
      ctx.moveTo(-4, -1);
      ctx.lineTo(2, 5);
      ctx.lineTo(6, -2);
      ctx.closePath();
      ctx.fill();
      ctx.stroke();
      ctx.fillStyle = this.color || "rgba(42,36,29,0.78)";
      ctx.font = "bold 12px Yomogi, ui-rounded, sans-serif";
      ctx.textAlign = "center";
      ctx.textBaseline = "middle";
      ctx.fillText(this.text, 0, -10);
    }
    ctx.restore();
  }
}

class SpatialGrid {
  constructor(cellSize = 96) {
    this.cellSize = cellSize;
    this.itemCells = new Map();
    this.staticItemCells = new Map();
    this.dynamicItemCells = new Map();
    this.tarinaiCells = new Map();
    this.antCells = new Map();
    this.obstacleCells = new Map();
    this.foodCells = new Map();
    this.hazardCells = new Map();
    this.staticObstacleCells = new Map();
    this.dynamicObstacleCells = new Map();
    this.staticFoodCells = new Map();
    this.dynamicFoodCells = new Map();
    this.staticHazardCells = new Map();
    this.dynamicHazardCells = new Map();
  }

  clear() {
    this.clearItems();
    this.clearTarinai();
    this.clearAnts();
  }

  clearItems() {
    this.itemCells.clear();
    this.staticItemCells.clear();
    this.dynamicItemCells.clear();
    this.obstacleCells.clear();
    this.foodCells.clear();
    this.hazardCells.clear();
    this.staticObstacleCells.clear();
    this.dynamicObstacleCells.clear();
    this.staticFoodCells.clear();
    this.dynamicFoodCells.clear();
    this.staticHazardCells.clear();
    this.dynamicHazardCells.clear();
  }

  clearStaticItems(opts = {}) {
    this.staticItemCells.clear();
    this.staticObstacleCells.clear();
    this.staticFoodCells.clear();
    this.staticHazardCells.clear();
    if (opts.rebuildCombined) this.rebuildCombinedItemCells();
  }

  clearDynamicItems(opts = {}) {
    this.dynamicItemCells.clear();
    this.dynamicObstacleCells.clear();
    this.dynamicFoodCells.clear();
    this.dynamicHazardCells.clear();
    if (opts.rebuildCombined) this.rebuildCombinedItemCells();
  }

  clearTarinai() {
    this.tarinaiCells.clear();
  }

  clearAnts() {
    this.antCells.clear();
  }

  keyFor(x, y) {
    const cx = Math.floor(x / this.cellSize);
    const cy = Math.floor(y / this.cellSize);
    return cx + cy * 100000;
  }

  add(map, entity) {
    if (!entity) return;
    const key = this.keyFor(entity.x || 0, entity.y || 0);
    let bucket = map.get(key);
    if (!bucket) {
      bucket = [];
      map.set(key, bucket);
    }
    bucket.push(entity);
  }

  isDynamicItem(it) {
    if (!it || it.dead) return false;
    const type = it.type || "";
    if (type === "ball" || type === "genkotsu" || type === "firecracker" || type === "pushpin" || type === "oshibyo" || (type === "rotator" && Math.abs(Number(it.rotatorSpeed || 0)) > 0.001)) return true;
    if ((it.dropTimer || 0) > 0) return true;
    if (Math.hypot(it.vx || 0, it.vy || 0) > 0.05) return true;
    if (it.isStructure && it.type === "plushie" && it.carriedById) return true;
    return false;
  }

  addItemToTraitCells(it, dynamic = this.isDynamicItem(it)) {
    const type = it.type || "";
    const obstacleMap = dynamic ? this.dynamicObstacleCells : this.staticObstacleCells;
    const foodMap = dynamic ? this.dynamicFoodCells : this.staticFoodCells;
    const hazardMap = dynamic ? this.dynamicHazardCells : this.staticHazardCells;
    if (typeof itemHasTrait === "function" ? itemHasTrait(type, "obstacle") : (type === "stone" || type === "ball" || type === "nest_box" || type === "bed" || type === "fence_v" || type === "fence_h" || type === "bounce_fence" || type === "bounce_fence_v")) this.add(obstacleMap, it);
    if (typeof itemHasTrait === "function" ? itemHasTrait(type, "food_interest") : (type === "sweet" || type === "love_mochi" || type === "fight_mochi" || type === "grass" || type === "water" || type === "water_bowl" || type === "ant_corpse" || (typeof isParamEffectItemType === "function" && isParamEffectItemType(type)))) this.add(foodMap, it);
    if (typeof itemHasTrait === "function" && itemHasTrait(type, "hazard")) this.add(hazardMap, it);
  }

  classifyItem(it) {
    if (!it || it.dead) return;
    const dynamic = this.isDynamicItem(it);
    const target = dynamic ? this.dynamicItemCells : this.staticItemCells;
    this.add(target, it);
    this.add(this.itemCells, it);
    this.addItemToTraitCells(it, dynamic);
  }

  rebuildItems(items) {
    this.clearItems();
    for (const it of items || []) this.classifyItem(it);
    this.rebuildCombinedItemCells();
  }

  rebuildStaticItems(items, opts = {}) {
    this.staticItemCells.clear();
    this.staticObstacleCells.clear();
    this.staticFoodCells.clear();
    this.staticHazardCells.clear();
    for (const it of items || []) {
      if (!it || it.dead || this.isDynamicItem(it)) continue;
      this.add(this.staticItemCells, it);
      this.addItemToTraitCells(it, false);
    }
    if (opts.rebuildCombined) this.rebuildCombinedItemCells();
  }

  rebuildDynamicItems(items, opts = {}) {
    this.dynamicItemCells.clear();
    this.dynamicObstacleCells.clear();
    this.dynamicFoodCells.clear();
    this.dynamicHazardCells.clear();
    for (const it of items || []) {
      if (!it || it.dead || !this.isDynamicItem(it)) continue;
      this.add(this.dynamicItemCells, it);
      this.addItemToTraitCells(it, true);
    }
    if (opts.rebuildCombined) this.rebuildCombinedItemCells();
  }

  copyCells(src, dst) {
    for (const [key, bucket] of src.entries()) {
      let out = dst.get(key);
      if (!out) {
        out = [];
        dst.set(key, out);
      }
      for (const entity of bucket) out.push(entity);
    }
  }

  rebuildCombinedItemCells() {
    this.itemCells.clear();
    this.obstacleCells.clear();
    this.foodCells.clear();
    this.hazardCells.clear();
    this.copyCells(this.staticItemCells, this.itemCells);
    this.copyCells(this.dynamicItemCells, this.itemCells);
    this.copyCells(this.staticObstacleCells, this.obstacleCells);
    this.copyCells(this.dynamicObstacleCells, this.obstacleCells);
    this.copyCells(this.staticFoodCells, this.foodCells);
    this.copyCells(this.dynamicFoodCells, this.foodCells);
    this.copyCells(this.staticHazardCells, this.hazardCells);
    this.copyCells(this.dynamicHazardCells, this.hazardCells);
  }

  rebuildTarinai(tarinai) {
    this.tarinaiCells.clear();
    for (const t of tarinai || []) if (!t.dead) this.add(this.tarinaiCells, t);
  }

  rebuildAnts(ants = []) {
    this.antCells.clear();
    for (const a of ants || []) if (!a.dead) this.add(this.antCells, a);
  }

  rebuild(items, tarinai, ants = []) {
    this.rebuildItems(items);
    this.rebuildTarinai(tarinai);
    this.rebuildAnts(ants);
  }

  nearby(map, x, y, radius, out = [], filterDistance = false) {
    out.length = 0;
    return this.nearbyInto(map, x, y, radius, out, filterDistance);
  }

  nearbyInto(map, x, y, radius, out = [], filterDistance = false) {
    const r = Number.isFinite(radius) ? radius : Math.max(1200, this.cellSize * 12);
    const minX = Math.floor((x - r) / this.cellSize);
    const maxX = Math.floor((x + r) / this.cellSize);
    const minY = Math.floor((y - r) / this.cellSize);
    const maxY = Math.floor((y + r) / this.cellSize);
    for (let cy = minY; cy <= maxY; cy++) {
      for (let cx = minX; cx <= maxX; cx++) {
        const bucket = map.get(cx + cy * 100000);
        if (!bucket) continue;
        for (const entity of bucket) {
          if (filterDistance) {
            const dx = (entity.x || 0) - x;
            const dy = (entity.y || 0) - y;
            const er = Math.max(entity.r || entity.radius || 0, 0);
            if (dx * dx + dy * dy > (r + er) * (r + er)) continue;
          }
          out.push(entity);
        }
      }
    }
    return out;
  }

  nearbySplitInto(staticMap, dynamicMap, x, y, radius, out = [], filterDistance = false) {
    out.length = 0;
    if (staticMap) this.nearbyInto(staticMap, x, y, radius, out, filterDistance);
    if (dynamicMap) this.nearbyInto(dynamicMap, x, y, radius, out, filterDistance);
    return out;
  }

  nearbyRectInto(map, rect, out = []) {
    if (!rect) return out;
    const minX = Math.floor((rect.left || 0) / this.cellSize);
    const maxX = Math.floor((rect.right || 0) / this.cellSize);
    const minY = Math.floor((rect.top || 0) / this.cellSize);
    const maxY = Math.floor((rect.bottom || 0) / this.cellSize);
    for (let cy = minY; cy <= maxY; cy++) {
      for (let cx = minX; cx <= maxX; cx++) {
        const bucket = map.get(cx + cy * 100000);
        if (!bucket) continue;
        for (const entity of bucket) out.push(entity);
      }
    }
    return out;
  }
}

function drawHeartShape(ctx, x, y, size, opts = {}) {
  const fill = opts.fill || "rgba(240,91,135,0.90)";
  const stroke = opts.stroke || "rgba(255,252,246,0.92)";
  const alpha = opts.alpha == null ? 1 : opts.alpha;
  const rotation = opts.rotation || 0;
  ctx.save();
  ctx.translate(x, y);
  if (rotation) ctx.rotate(rotation);
  ctx.globalAlpha *= alpha;
  ctx.fillStyle = fill;
  ctx.strokeStyle = stroke;
  ctx.lineWidth = Math.max(1.2, size * 0.14);
  ctx.beginPath();
  ctx.moveTo(0, size * 0.72);
  ctx.bezierCurveTo(-size * 1.55, -size * 0.22, -size * 1.16, -size * 1.36, 0, -size * 0.52);
  ctx.bezierCurveTo(size * 1.16, -size * 1.36, size * 1.55, -size * 0.22, 0, size * 0.72);
  ctx.fill();
  ctx.stroke();
  ctx.restore();
}