tarinai/js/world_family_social.js

"use strict";


(function (global) {
  const World = global.World;
  if (!World) throw new Error("World is not available for mixin: world_family_social.js");

  const RESET_PRESETS = Object.freeze({
    empty: { label: "空白" },
    default: { label: "デフォルト" },
    athletic: { label: "アスレチック" },
    crowded: { label: "過密" },
    family: { label: "家族" },
    war: { label: "戦争" },
    happy: { label: "幸福" },
  });

  function normalizeResetPresetId(presetId = "default") {
    const id = String(presetId || "default");
    return Object.prototype.hasOwnProperty.call(RESET_PRESETS, id) ? id : "default";
  }

  function presetScaleForField(field) {
    const id = field?.id || "garden";
    if (id === "cage") return 0.65;
    if (id === "park") return 1.45;
    return 1;
  }

  function presetCount(field, base, min = 0, max = Infinity) {
    const value = Math.round((Number(base) || 0) * presetScaleForField(field));
    return Math.max(min, Math.min(Number.isFinite(max) ? max : value, value));
  }

  function randPoint(worldRef, pad = 78, zone = null) {
    const x0 = Math.max(pad, Number(zone?.x0 ?? pad));
    const x1 = Math.min(worldRef.w - pad, Number(zone?.x1 ?? (worldRef.w - pad)));
    const y0 = Math.max(pad, Number(zone?.y0 ?? pad));
    const y1 = Math.min(worldRef.h - pad, Number(zone?.y1 ?? (worldRef.h - pad)));
    return { x: rand(Math.min(x0, x1), Math.max(x0, x1)), y: rand(Math.min(y0, y1), Math.max(y0, y1)) };
  }

  function randomPresetAngle(step = Math.PI / 4) {
    const n = Math.max(1, Math.round((Math.PI * 2) / Math.max(0.001, step)));
    return Math.floor(rand(0, n)) * step;
  }

  function presetShapeExtent(segments) {
    let max = 0;
    for (const seg of segments || []) {
      for (let i = 0; i < 4; i += 2) max = Math.max(max, Math.hypot(Number(seg[i]) || 0, Number(seg[i + 1]) || 0));
    }
    return max;
  }

  function configurePresetMechanicalItem(item, opts = {}) {
    const body = item?.physicsBody;
    if (!body || (item.type !== "rotator" && item.type !== "reciprocator")) return item;
    body.pose = body.pose || { x: item.x, y: item.y, angle: Number(item.angle) || 0 };
    body.pose.x = item.x;
    body.pose.y = item.y;
    body.pose.angle = Number(item.angle) || 0;
    body.velocity = body.velocity || { x: 0, y: 0, angular: 0, linear: 0 };
    body.velocity.x = 0;
    body.velocity.y = 0;
    body.velocity.angular = 0;
    body.velocity.linear = 0;
    body.shape = body.shape || { model: "segments", thickness: 12, segments: [], version: 0 };

    if (item.type === "rotator") {
      const segments = opts.segments || [
        [-92, 0, 92, 0],
        [0, -58, 0, 58],
        [-58, -42, 58, 42],
        [-58, 42, 58, -42],
      ];
      body.motor = body.motor || { powered: true, speed: Math.PI * 0.18, direction: 1 };
      body.motor.powered = opts.motorOn !== false;
      body.motor.speed = Number.isFinite(Number(opts.motorSpeed)) ? Number(opts.motorSpeed) : Math.PI * 0.18;
      body.motor.direction = Number(opts.direction) < 0 ? -1 : 1;
      body.shape.model = "segments";
      body.shape.thickness = Number.isFinite(Number(opts.thickness)) ? Number(opts.thickness) : 14;
      body.shape.segments = segments.map(seg => seg.slice(0, 4));
      body.shape.version = (Number(body.shape.version) || 0) + 1;
      item.spin = 0;
      item.r = Math.max(item.r || 64, presetShapeExtent(segments) + body.shape.thickness + 8);
    } else if (item.type === "reciprocator") {
      const railAxis = Number.isFinite(Number(opts.railAxis)) ? Number(opts.railAxis) : (Number(item.angle) || 0);
      const segments = opts.segments || [
        [-92, -24, -36, -24],
        [-36, -24, -36, 24],
        [-36, 24, 36, 24],
        [36, 24, 36, -24],
        [36, -24, 92, -24],
      ];
      body.motor = body.motor || { powered: true, speed: 36, direction: 1 };
      body.motor.powered = opts.railOn !== false;
      body.motor.speed = Number.isFinite(Number(opts.railMotorSpeed)) ? Number(opts.railMotorSpeed) : 36;
      body.motor.direction = Number(opts.direction) < 0 ? -1 : 1;
      body.rail = body.rail || { axisAngle: railAxis, travel: 120, phase: 0, anchorX: item.x, anchorY: item.y };
      body.rail.axisAngle = railAxis;
      body.rail.travel = Number.isFinite(Number(opts.railTravel)) ? Number(opts.railTravel) : 120;
      body.rail.phase = Number.isFinite(Number(opts.railPhase)) ? Number(opts.railPhase) : 0;
      body.rail.anchorX = item.x;
      body.rail.anchorY = item.y;
      body.shape.model = "segments";
      body.shape.thickness = Number.isFinite(Number(opts.thickness)) ? Number(opts.thickness) : 14;
      body.shape.segments = segments.map(seg => seg.slice(0, 4));
      body.shape.version = (Number(body.shape.version) || 0) + 1;
      item.r = Math.max(item.r || 64, presetShapeExtent(segments) + body.shape.thickness + 8);
    }
    globalThis.TarinaiPhysicsBodySystem?.invalidateItem?.(item, "preset-mechanical-shape");
    globalThis.TarinaiMechanicalSystem?.invalidateGeometry?.(item);
    return item;
  }

  function syncPresetMechanicalPose(item) {
    const body = item?.physicsBody;
    if (!body) return;
    body.pose = body.pose || { x: item.x, y: item.y, angle: Number(item.angle) || 0 };
    body.pose.x = item.x;
    body.pose.y = item.y;
    body.pose.angle = Number(item.angle) || 0;
    if (body.rail) {
      body.rail.anchorX = item.x;
      body.rail.anchorY = item.y;
    }
    globalThis.TarinaiPhysicsBodySystem?.invalidateItem?.(item, "preset-placement-pose");
    globalThis.TarinaiMechanicalSystem?.invalidateGeometry?.(item);
  }

  function presetItemFootprintRadius(worldRef, item) {
    const radius = globalThis.TarinaiCollisionFootprints?.itemFootprintRadius?.(worldRef, item);
    if (Number.isFinite(Number(radius))) {
      if (item?.type === "ball") return Math.max(34, Number(radius) * 1.35);
      return Math.max(14, Number(radius));
    }
    return Math.max(14, Number(item?.r || 16) || 16);
  }

  function presetItemPlacementBlocked(worldRef, item, opts = {}) {
    if (!worldRef || !item || item.dead) return true;
    if (typeof worldRef.placementBlocked === "function" && worldRef.placementBlocked(item)) return true;
    const itemRects = worldRef.solidObstacleRects?.(item) || globalThis.TarinaiCollisionFootprints?.placementRectsFor?.(worldRef, item) || [];
    const itemRadius = presetItemFootprintRadius(worldRef, item);
    const search = Math.max(120, itemRadius * 3.2);
    for (const other of worldRef.nearbyItems?.(item.x, item.y, search) || worldRef.items || []) {
      if (!other || other === item || other.dead) continue;
      const sameType = other.type === item.type;
      const otherIsFence = worldRef.isFenceType?.(other.type) || false;
      const itemIsFence = worldRef.isFenceType?.(item.type) || false;
      if (!opts.avoidAllObstacles && !sameType && !otherIsFence && !itemIsFence) continue;
      const otherRects = worldRef.solidObstacleRects?.(other) || globalThis.TarinaiCollisionFootprints?.placementRectsFor?.(worldRef, other) || [];
      const otherRadius = presetItemFootprintRadius(worldRef, other);
      const margin = (itemIsFence || otherIsFence) ? 4 : Math.max(8, Math.min(itemRadius, otherRadius) * 0.28);
      if (itemRects.length && otherRects.length) {
        if (itemRects.some(a => otherRects.some(b => globalThis.TarinaiCollisionFootprints?.rectsOverlap?.(a, b, margin)))) return true;
        continue;
      }
      if (itemRects.length) {
        if (itemRects.some(r => globalThis.TarinaiCollisionFootprints?.rectCircleOverlap?.(r, other.x, other.y, otherRadius, margin))) return true;
        continue;
      }
      if (otherRects.length) {
        if (otherRects.some(r => globalThis.TarinaiCollisionFootprints?.rectCircleOverlap?.(r, item.x, item.y, itemRadius, margin))) return true;
        continue;
      }
      if (Math.hypot((item.x || 0) - (other.x || 0), (item.y || 0) - (other.y || 0)) < itemRadius + otherRadius + margin) return true;
    }
    return false;
  }

  function findPresetItemSpot(worldRef, item, opts = {}) {
    const allowOriginal = opts.allowOriginal !== false;
    if (allowOriginal && !presetItemPlacementBlocked(worldRef, item, opts)) return { x: item.x, y: item.y };
    const solid = Boolean(worldRef?.isFenceType?.(item.type) || item.type === "rotator" || item.type === "reciprocator" || item.type === "nest_box");
    const count = Math.max(12, Number(opts.attempts || 0) || (solid ? 96 : 58));
    const maxRadius = Math.max(70, Number(opts.maxRadius || 0) || (solid ? 220 : 170));
    const golden = Math.PI * (3 - Math.sqrt(5));
    let best = null;
    let bestD = Infinity;
    const seed = `${item.type}:${Math.round(item.x)},${Math.round(item.y)}`;
    for (let i = 0; i < count; i++) {
      const t = count <= 1 ? 1 : i / (count - 1);
      const radius = Math.max(10, maxRadius * Math.sqrt(t));
      const angle = i * golden + (globalThis.stableUnit ? globalThis.stableUnit(seed, "preset-place") : Math.random()) * Math.PI * 2;
      const rawX = item.x + Math.cos(angle) * radius;
      const rawY = item.y + Math.sin(angle) * radius * 0.74;
      const p = worldRef.placementClampPointFor?.(item, rawX, rawY) || { x: clamp(rawX, 42, worldRef.w - 42), y: clamp(rawY, 42, worldRef.h - 42) };
      const oldX = item.x, oldY = item.y;
      item.x = p.x; item.y = p.y; syncPresetMechanicalPose(item);
      const blocked = presetItemPlacementBlocked(worldRef, item, opts);
      item.x = oldX; item.y = oldY; syncPresetMechanicalPose(item);
      if (blocked) continue;
      const d = Math.hypot(p.x - oldX, p.y - oldY);
      if (d < bestD) { best = p; bestD = d; }
    }
    return best;
  }

  function addPresetItem(worldRef, type, x, y, opts = {}) {
    const item = new Item(type, x, y);
    if (Number.isFinite(Number(opts.r))) item.r = Number(opts.r);
    if (Number.isFinite(Number(opts.angle))) item.angle = Number(opts.angle);
    if (opts.toolSize) item.toolSize = opts.toolSize;
    if (type === "duplicator") {
      item.storedFoodType = opts.storedFoodType || "sweet";
      item.storedFoodLabel = typeof foodLabel === "function" ? foodLabel(item.storedFoodType) : (typeof toolLabel === "function" ? toolLabel(item.storedFoodType) : item.storedFoodType);
      if (item.roles) item.roles.food = true;
    }
    if (type === "rotator" || type === "reciprocator") configurePresetMechanicalItem(item, opts);
    if (opts.avoidOverlap) {
      const spot = findPresetItemSpot(worldRef, item, opts);
      if (!spot) return null;
      item.x = spot.x;
      item.y = spot.y;
      syncPresetMechanicalPose(item);
    }
    if (worldRef.addItem) worldRef.addItem(item, opts.reason || `preset-${type}`);
    else worldRef.items.push(item);
    return item;
  }

  function addPresetGrass(worldRef, count, zone = null) {
    for (let i = 0; i < count; i++) {
      const p = randPoint(worldRef, 70, zone);
      const grass = addPresetItem(worldRef, "grass", p.x, p.y, { reason: "preset-grass" });
      globalThis.TarinaiGrass?.setStage?.(grass, Math.floor(rand(0, 2.999)), { force: true });
    }
  }

  function addPresetTarinai(worldRef, count, zone = null, opts = {}) {
    for (let i = 0; i < count; i++) {
      const p = randPoint(worldRef, 82, zone);
      worldRef.addTarinai({ x: p.x, y: p.y, generation: opts.generation || 1 });
    }
  }

  function addPresetItemsScattered(worldRef, type, count, zone = null, opts = {}) {
    let placed = 0;
    const n = Math.max(0, Number(count) | 0);
    const attempts = opts.avoidOverlap ? Math.max(n * 4, n + 8) : n;
    for (let i = 0; i < attempts && placed < n; i++) {
      const p = randPoint(worldRef, opts.pad || 82, zone);
      const item = addPresetItem(worldRef, type, p.x, p.y, opts);
      if (item) placed++;
    }
  }

  function addPresetFenceLine(worldRef, count, yRatio, angle = 0, type = "fence_h", opts = {}) {
    const n = Math.max(1, Number(count) | 0);
    const gap = worldRef.w / (n + 1);
    for (let i = 1; i <= n; i++) {
      addPresetItem(worldRef, type, gap * i, worldRef.h * yRatio + rand(-24, 24), { angle, reason: opts.reason || "preset-fence", avoidOverlap: !!opts.avoidOverlap, avoidAllObstacles: !!opts.avoidAllObstacles, attempts: opts.attempts || 96, maxRadius: opts.maxRadius || 190 });
    }
  }

  function addPresetFencesScattered(worldRef, count, zone = null, opts = {}) {
    const n = Math.max(0, Number(count) | 0);
    let placed = 0;
    const attempts = opts.avoidOverlap ? Math.max(n * 4, n + 8) : n;
    for (let i = 0; i < attempts && placed < n; i++) {
      const p = randPoint(worldRef, opts.pad || 78, zone);
      const vertical = Math.random() < 0.5;
      const item = addPresetItem(worldRef, vertical ? "fence_v" : "fence_h", p.x, p.y, { angle: randomPresetAngle(Math.PI / 4), reason: opts.reason || "preset-fence-scatter", avoidOverlap: !!opts.avoidOverlap, attempts: opts.attempts || 80, maxRadius: opts.maxRadius || 180 });
      if (item) placed++;
    }
  }

  function generateDefaultPreset(worldRef, field, seedPopulation) {
    const population = seedPopulation ?? field.population ?? CONFIG.initialPopulation;
    const grassCount = field.grass ?? 18;
    addPresetTarinai(worldRef, population);
    addPresetGrass(worldRef, grassCount);
    addPresetItem(worldRef, "stone", worldRef.w * 0.68, worldRef.h * 0.32, { reason: "reset-stone" });
  }

  function generateAthleticPreset(worldRef, field) {
    const factor = presetScaleForField(field);
    const fieldId = field?.id || "garden";
    const compact = fieldId === "cage" || fieldId === "garden";
    const center = { x0: worldRef.w * 0.10, x1: worldRef.w * 0.90, y0: worldRef.h * 0.14, y1: worldRef.h * 0.86 };
    addPresetTarinai(worldRef, presetCount(field, 14, 7, 24), { x0: worldRef.w * 0.08, x1: worldRef.w * 0.30, y0: worldRef.h * 0.18, y1: worldRef.h * 0.82 });
    // 物理ブロックは柵より先に置く。狭い中小フィールドでは柵側を間引き、ブロックを優先する。
    addPresetItemsScattered(worldRef, "stone", presetCount(field, compact ? 4 : 6, 3, 9), center, { pad: compact ? 118 : 132, reason: "preset-athletic-physical-block", avoidOverlap: true, avoidAllObstacles: true, attempts: 140, maxRadius: compact ? 260 : 220 });
    addPresetItemsScattered(worldRef, "stove", presetCount(field, 2, 1, 3), center, { pad: 118, reason: "preset-athletic-stove", avoidOverlap: true, avoidAllObstacles: true, attempts: 100, maxRadius: 210 });
    addPresetItemsScattered(worldRef, "ball", presetCount(field, compact ? 8 : 10, 4, 18), null, { pad: 96, reason: "preset-ball", avoidOverlap: true, avoidAllObstacles: true, attempts: 90, maxRadius: compact ? 230 : 190 });
    addPresetFenceLine(worldRef, Math.max(2, Math.round((compact ? 3 : 4) * factor)), 0.36, 0, "fence_h", { avoidOverlap: true, avoidAllObstacles: true, attempts: 120, maxRadius: compact ? 250 : 210, reason: "preset-athletic-fence-line" });
    addPresetFenceLine(worldRef, Math.max(1, Math.round((compact ? 2 : 3) * factor)), 0.62, Math.PI / 2, "fence_v", { avoidOverlap: true, avoidAllObstacles: true, attempts: 120, maxRadius: compact ? 250 : 210, reason: "preset-athletic-fence-line" });
    addPresetFencesScattered(worldRef, Math.max(1, Math.round((compact ? 2 : 4) * factor)), null, { pad: 108, reason: "preset-athletic-fence", avoidOverlap: true, avoidAllObstacles: true, attempts: 120, maxRadius: compact ? 250 : 210 });
    addPresetItemsScattered(worldRef, "rotator", Math.max(1, Math.round(2 * factor)), null, { pad: 148, reason: "preset-rotator-slow-custom", motorSpeed: Math.PI * 0.18, thickness: 14, avoidOverlap: true, avoidAllObstacles: true, attempts: 140, maxRadius: compact ? 280 : 240 });
    addPresetItemsScattered(worldRef, "reciprocator", Math.max(1, Math.round(2 * factor)), null, { pad: 148, reason: "preset-reciprocator-slow-custom", railMotorSpeed: 36, railTravel: 120, thickness: 14, avoidOverlap: true, avoidAllObstacles: true, attempts: 140, maxRadius: compact ? 280 : 240 });
  }

  function generateCrowdedPreset(worldRef, field) {
    const center = { x0: worldRef.w * 0.18, x1: worldRef.w * 0.82, y0: worldRef.h * 0.18, y1: worldRef.h * 0.82 };
    addPresetTarinai(worldRef, presetCount(field, 36, 18, 58), center);
    addPresetItemsScattered(worldRef, "nest_box", presetCount(field, 13, 7, 22), center, { pad: 96, reason: "preset-nest-box" });
    addPresetItemsScattered(worldRef, "duplicator", presetCount(field, 3, 2, 5), center, { pad: 110, storedFoodType: "sweet", reason: "preset-duplicator-zunda" });
    addPresetGrass(worldRef, presetCount(field, 18, 8, 34), center);
    addPresetItemsScattered(worldRef, "water", presetCount(field, 8, 4, 16), center, { pad: 84, reason: "preset-water" });
  }

  function generateFamilyPreset(worldRef, field) {
    const cx = worldRef.w * 0.5;
    const cy = worldRef.h * 0.52;
    worldRef.addTarinai({ x: cx - 52, y: cy + 20, generation: 1 });
    worldRef.addTarinai({ x: cx + 52, y: cy + 20, generation: 1 });
    addPresetItem(worldRef, "nest_box", cx, cy - 58, { reason: "preset-family-nest" });
    addPresetItem(worldRef, "duplicator", cx, cy + 112, { storedFoodType: "love_mochi", reason: "preset-family-duplicator" });
  }

  function generateWarPreset(worldRef, field) {
    const left = { x0: worldRef.w * 0.08, x1: worldRef.w * 0.45, y0: worldRef.h * 0.16, y1: worldRef.h * 0.84 };
    const right = { x0: worldRef.w * 0.55, x1: worldRef.w * 0.92, y0: worldRef.h * 0.16, y1: worldRef.h * 0.84 };
    addPresetTarinai(worldRef, Math.ceil(presetCount(field, 28, 14, 48) / 2), left);
    addPresetTarinai(worldRef, Math.floor(presetCount(field, 28, 14, 48) / 2), right);
    addPresetItemsScattered(worldRef, "duplicator", presetCount(field, 3, 2, 5), { x0: worldRef.w * 0.38, x1: worldRef.w * 0.62, y0: worldRef.h * 0.22, y1: worldRef.h * 0.78 }, { pad: 96, storedFoodType: "fight_mochi", reason: "preset-war-duplicator" });
    addPresetItemsScattered(worldRef, "ball", presetCount(field, 8, 4, 14), null, { pad: 90, reason: "preset-war-ball" });
    addPresetItemsScattered(worldRef, "ant_nest", presetCount(field, 1.25, 1, 2), null, { pad: 116, reason: "preset-war-ant-nest", avoidOverlap: true, attempts: 80, maxRadius: 190 });
    addPresetItemsScattered(worldRef, "pushpin", presetCount(field, 5, 2, 9), null, { pad: 88, reason: "preset-war-pushpin-reduced" });
    addPresetItemsScattered(worldRef, "oshibyo", presetCount(field, 8, 4, 16), null, { pad: 88, reason: "preset-war-oshibyo" });
    addPresetFencesScattered(worldRef, presetCount(field, 8, 4, 14), null, { pad: 94, reason: "preset-war-fence" });
  }

  function generateHappyPreset(worldRef, field) {
    const center = { x0: worldRef.w * 0.16, x1: worldRef.w * 0.84, y0: worldRef.h * 0.16, y1: worldRef.h * 0.84 };
    addPresetTarinai(worldRef, presetCount(field, 16, 8, 28), center);
    addPresetItemsScattered(worldRef, "nest_box", presetCount(field, 8, 4, 14), center, { pad: 96, reason: "preset-happy-nest-box" });
    addPresetItemsScattered(worldRef, "robot_cleaner", presetCount(field, 2, 1, 3), center, { pad: 110, reason: "preset-happy-robot-cleaner" });
    addPresetItemsScattered(worldRef, "duplicator", presetCount(field, 2, 1, 4), center, { pad: 110, storedFoodType: "sweet", reason: "preset-happy-duplicator-zunda" });
    addPresetItemsScattered(worldRef, "ball", presetCount(field, 6, 3, 10), center, { pad: 88, reason: "preset-happy-ball" });
  }

  function generatePresetWorld(worldRef, field, presetId, seedPopulation) {
    switch (normalizeResetPresetId(presetId)) {
      case "empty": return;
      case "athletic": return generateAthleticPreset(worldRef, field);
      case "crowded": return generateCrowdedPreset(worldRef, field);
      case "family": return generateFamilyPreset(worldRef, field);
      case "war": return generateWarPreset(worldRef, field);
      case "happy": return generateHappyPreset(worldRef, field);
      case "default":
      default:
        return generateDefaultPreset(worldRef, field, seedPopulation);
    }
  }

  function groundForResetPreset(presetId = "default") {
    const id = normalizeResetPresetId(presetId);
    if (id === "athletic") return "ice";
    if (id === "war") return "foot_massage";
    if (id === "happy") return "blanket";
    return "soil";
  }

  global.TarinaiResetPresets = Object.freeze({ ids: Object.keys(RESET_PRESETS), meta: RESET_PRESETS, normalize: normalizeResetPresetId });

  Object.defineProperties(World.prototype, Object.getOwnPropertyDescriptors({
  reset(seedPopulation = null, fieldType = this.fieldType || "garden", presetId = "default") {
    const field = FIELD_TYPES?.[fieldType] || FIELD_TYPES.garden;
    const preset = normalizeResetPresetId(presetId);
    this.fieldType = field.id;
    this.fieldZoom = 1;
    this.setViewportSize(this.viewportW, this.viewportH);
    this.time = 0;
    this.day = 1;
    this.paused = false;
    this.speed = 1;
    this.toolSize = this.toolSize || "medium";
    this.toolSizes = this.toolSizes || {};
    this.tarinai = [];
    this.items = [];
    this.ants = [];
    this.effects = [];
    this.itemCounts = {};
    this.effectCounts = {};
    this.itemTypeBuckets = new Map();
    this.itemIdMap = new Map();
    this.itemBucketsDirty = false;
    this.logs = [];
    this.events = window.TarinaiEvents || null;
    this.eventCounters = {};
    this.countsTimer = 0;
    this.compactTimer = 0;
    this.drawSortTimer = 0;
    this.drawListDirty = true;
    this.antUpdatePhase = 0;
    this.grassGrowthTimer = 0;
    this.nextGrassLimitCheckAt = 0;
    this.selected = null;
    this.deadCount = 0;
    this.liveIdNext = 1;
    this.liveIdSerial = 0;
    this.liveTarinai = new Map();
    this.worldSeed = global.TarinaiSeedFactory.createWorldSeed() || `w${Date.now().toString(36)}`;
    this.birthSerial = 0;
    this.lastBirthAt = -999;
    this.maxGeneration = 1;
    this.family = {};
    this.familyVersion = 0;
    this.relationNotices = {};
    this.resolvedFightIds = {};
    this.fightPairCooldowns = {};
    this.pointer = { x: this.w / 2, y: this.h / 2, inside: false, motion: 0, movedAt: 0 };
    this.cameraX = Math.max(0, (this.w - (this.viewportW || this.w)) / 2);
    this.cameraY = Math.max(0, (this.h - (this.viewportH || this.h)) / 2);
    this.shakeTimer = 0;
    this.shakeDuration = 0;
    this.shakeStrength = 0;
    this.clampCamera();
    this.lastPhase = this.phaseName();
    this.weather = "sunny";
    this.groundType = window.TarinaiGround.exists(this.groundType || "soil") ? (this.groundType || "soil") : "soil";
    const presetGround = groundForResetPreset(preset);
    if (presetGround && window.TarinaiGround.exists(presetGround)) this.groundType = presetGround;
    this.nextWeatherChange = rand(CONFIG.weatherChangeMin, CONFIG.weatherChangeMax);

    generatePresetWorld(this, field, preset, seedPopulation);

    this.updateItemCounts();
    this.enforceGrassLimit?.("reset-grass-limit");
    this.updateItemCounts();
    this.updateEffectCounts();
    this.markTerrainDirty?.("reset");
    this.rebuildSpatial(true);
    const label = RESET_PRESETS[preset]?.label || "デフォルト";
    showToast(`${label}で新しい観察を開始しました。`);
    syncTopButtons();
  },

  tarinaiFamilyKey(t) {
    return t?.familyKey || t?.id || "";
  },

  assignTarinaiLiveId(t) {
    if (!t) return "";
    if (!this.liveTarinai) this.liveTarinai = new Map();
    // Live IDs are never recycled. Relationships and transient targets are keyed by
    // live ID, so reuse can make dead friends/enemies leak onto new individuals.
    if (!Number.isFinite(this.liveIdNext)) this.liveIdNext = 1;
    if (!Number.isFinite(this.liveIdSerial)) this.liveIdSerial = 0;
    const id = `t${this.liveIdNext++}`;
    t.id = id;
    t.liveToken = ++this.liveIdSerial;
    this.liveTarinai.set(id, { token: t.liveToken, target: t });
    return id;
  },

  releaseTarinaiLiveId(t) {
    if (!t?.id || !this.liveTarinai) return false;
    const current = this.liveTarinai.get(t.id);
    if (!current || current.target !== t || current.token !== t.liveToken) return false;
    const id = t.id;
    this.liveTarinai.delete(id);
    // Do not recycle live IDs. Relationships are keyed by live ID; recycling can
    // make a dead friend's/enemy's relationship appear on a newly spawned individual.
    t.releasedLiveId = id;
    t.id = "";
    t.liveToken = 0;
    return true;
  },

  liveTarinaiById(id, token = null) {
    if (!id || !this.liveTarinai) return null;
    const entry = this.liveTarinai.get(id);
    if (!entry || (token !== null && entry.token !== token)) return null;
    const t = entry.target;
    return t && !t.dead ? t : null;
  },

  recordFamily(t) {
    if (!this.family) this.family = {};
    const familyKey = this.tarinaiFamilyKey(t);
    if (!familyKey) return;
    const uniqueIds = (list) => Array.from(new Set((list || []).filter(Boolean)));
    const sameList = (a, b) => {
      const aa = uniqueIds(a);
      const bb = uniqueIds(b);
      return aa.length === bb.length && aa.every((id, i) => id === bb[i]);
    };
    let changed = false;
    const nextParents = uniqueIds(t.parents || []);
    const nextChildren = uniqueIds(t.children || []);
    const nextPersonalityTags = getPersonalityTraitTags(t);
    const nextScale = Number.isFinite(t.scale) ? t.scale : (Number.isFinite(t.adultScale) ? t.adultScale : 0.28);
    const nextAdultScale = Number.isFinite(t.adultScale) ? t.adultScale : nextScale;
    const nextGrowth = Number.isFinite(t.growth) ? t.growth : 1;
    const nextGenetics = typeof normalizeGenetics === "function" ? normalizeGenetics(t.genetics, t.familyKey || t.id || "") : { ...(t.genetics || {}) };
    const nextFightWins = Number(t.totalFightWins || 0) || 0;
    const nextFightLosses = Number(t.totalFightLosses || 0) || 0;
    const nextChampion = !!t.isTarinaiChampion;
    if (!this.family[familyKey]) {
      this.family[familyKey] = {
        id: familyKey,
        name: t.name,
        type: t.type,
        personalityTags: nextPersonalityTags,
        generation: t.generation,
        hasPaired: !!t.hasPaired,
        parents: nextParents,
        parentNames: [...(t.parentNames || [])],
        children: nextChildren,
        birthTime: t.birthTime,
        scale: nextScale,
        adultScale: nextAdultScale,
        growth: nextGrowth,
        genetics: nextGenetics,
        lifeSpan: Number(t.lifeSpan) || 0,
        totalFightWins: nextFightWins,
        totalFightLosses: nextFightLosses,
        isTarinaiChampion: nextChampion,
        alive: !t.dead,
        deathReason: t.deathReason || "",
      };
      changed = true;
    } else {
      const entry = this.family[familyKey];
      const nextAlive = !t.dead;
      if (entry.name !== t.name) changed = true;
      if (entry.type !== t.type) changed = true;
      if (!sameList(entry.personalityTags, nextPersonalityTags)) changed = true;
      if (entry.hasPaired !== !!t.hasPaired) changed = true;
      if (entry.generation !== t.generation) changed = true;
      if (Math.abs((Number(entry.scale) || 0) - nextScale) > 0.002) changed = true;
      if (Math.abs((Number(entry.adultScale) || 0) - nextAdultScale) > 0.002) changed = true;
      if (Math.abs((Number(entry.growth) || 0) - nextGrowth) > 0.02) changed = true;
      for (const key of ["lifeSpanMul", "attackMul", "speedMul", "sizeMul", "temperatureOffset"]) {
        const fallback = key === "temperatureOffset" ? 0 : 1;
        const prevGene = Number.isFinite(Number(entry.genetics?.[key])) ? Number(entry.genetics?.[key]) : fallback;
        const nextGene = Number.isFinite(Number(nextGenetics?.[key])) ? Number(nextGenetics?.[key]) : fallback;
        if (Math.abs(prevGene - nextGene) > 0.002) changed = true;
      }
      if (Math.abs((Number(entry.lifeSpan) || 0) - (Number(t.lifeSpan) || 0)) > 1) changed = true;
      if ((Number(entry.totalFightWins) || 0) !== nextFightWins) changed = true;
      if ((Number(entry.totalFightLosses) || 0) !== nextFightLosses) changed = true;
      if (!!entry.isTarinaiChampion !== nextChampion) changed = true;
      if ((entry.deathReason || "") !== (t.deathReason || entry.deathReason || "")) changed = true;
      if (entry.alive !== nextAlive) changed = true;
      if (!sameList(entry.parents, nextParents)) changed = true;
      if (!sameList(entry.children, nextChildren)) changed = true;
      entry.name = t.name;
      entry.type = t.type;
      delete entry.personality;
      entry.personalityTags = nextPersonalityTags;
      entry.alive = nextAlive;
      entry.generation = t.generation;
      entry.scale = nextScale;
      entry.adultScale = nextAdultScale;
      entry.growth = nextGrowth;
      entry.genetics = nextGenetics;
      entry.lifeSpan = Number(t.lifeSpan) || entry.lifeSpan || 0;
      entry.totalFightWins = nextFightWins;
      entry.totalFightLosses = nextFightLosses;
      entry.isTarinaiChampion = nextChampion;
      entry.hasPaired = !!t.hasPaired;
      entry.deathReason = t.deathReason || entry.deathReason || "";
      entry.parents = nextParents;
      entry.parentNames = [...(t.parentNames || entry.parentNames || [])];
      entry.children = nextChildren;
    }
    if (changed) {
      this.familyVersion = (this.familyVersion || 0) + 1;
      this.markFamilyTreeDirty("family-record");
    }
  },

  markFamilyTreeDirty(reason = "family") {
    this.familyTreeDirty = true;
  },

  normalizeFamily() {
    if (!this.family) this.family = {};
    if (this.familyCleanVersion === (this.familyVersion || 0)) return false;
    const family = this.family;
    const liveById = new Map((this.tarinai || []).map(t => [this.tarinaiFamilyKey(t), t]).filter(([id]) => id));
    let changed = false;
    const uniqueIds = (list, allow) => Array.from(new Set((list || []).filter(id => id && (!allow || allow.has(id)))));
    const sameList = (a, b) => a.length === b.length && a.every((id, i) => id === b[i]);
    for (const t of this.tarinai || []) {
      const familyKey = this.tarinaiFamilyKey(t);
      if (!familyKey || (!this.family[familyKey] && !(t.hasPaired || (t.parents || []).length || (t.children || []).length))) continue;
      const before = this.familyVersion || 0;
      this.recordFamily(t);
      changed = changed || before !== (this.familyVersion || 0);
    }
    const known = new Set(Object.keys(family));
    for (const id of Object.keys(family)) {
      const n = family[id] || {};
      const live = liveById.get(id);
      const parents = uniqueIds(n.parents, known);
      const children = uniqueIds(n.children, known);
      if (live) {
        const liveParents = uniqueIds(live.parents, known);
        const liveChildren = uniqueIds(live.children, known);
        for (const p of liveParents) if (!parents.includes(p)) parents.push(p);
        for (const c of liveChildren) if (!children.includes(c)) children.push(c);
      }
      const next = {
        id,
        name: live?.name || n.name || id,
        type: live?.type || n.type || "smile",
        personalityTags: live ? getPersonalityTraitTags(live) : [...(n.personalityTags || [])],
        generation: Math.max(1, live?.generation || n.generation || 1),
        hasPaired: !!(live?.hasPaired || n.hasPaired),
        parents,
        parentNames: live?.parentNames ? [...live.parentNames] : [...(n.parentNames || [])],
        children,
        birthTime: live?.birthTime ?? n.birthTime ?? 0,
        scale: Number.isFinite(live?.scale) ? live.scale : (Number.isFinite(n.scale) ? n.scale : (Number.isFinite(live?.adultScale) ? live.adultScale : (Number.isFinite(n.adultScale) ? n.adultScale : 0.28))),
        adultScale: Number.isFinite(live?.adultScale) ? live.adultScale : (Number.isFinite(n.adultScale) ? n.adultScale : (Number.isFinite(live?.scale) ? live.scale : (Number.isFinite(n.scale) ? n.scale : 0.28))),
        growth: Number.isFinite(live?.growth) ? live.growth : (Number.isFinite(n.growth) ? n.growth : 1),
        genetics: live && typeof normalizeGenetics === "function" ? normalizeGenetics(live.genetics, live.familyKey || live.id || "") : (typeof normalizeGenetics === "function" ? normalizeGenetics(n.genetics, id) : { ...(n.genetics || {}) }),
        lifeSpan: Number(live?.lifeSpan || n.lifeSpan || 0) || 0,
        totalFightWins: Number(live?.totalFightWins ?? n.totalFightWins ?? 0) || 0,
        totalFightLosses: Number(live?.totalFightLosses ?? n.totalFightLosses ?? 0) || 0,
        isTarinaiChampion: !!(live?.isTarinaiChampion || n.isTarinaiChampion),
        alive: live ? !live.dead : n.alive !== false,
        deathReason: live?.deathReason || n.deathReason || "",
      };
      for (const key of Object.keys(next)) {
        const a = family[id]?.[key];
        const b = next[key];
        let equal = false;
        if (key === "genetics") {
          equal = ["lifeSpanMul", "attackMul", "speedMul", "sizeMul", "temperatureOffset"].every(gk => {
            const fallback = gk === "temperatureOffset" ? 0 : 1;
            const av = Number.isFinite(Number(a?.[gk])) ? Number(a?.[gk]) : fallback;
            const bv = Number.isFinite(Number(b?.[gk])) ? Number(b?.[gk]) : fallback;
            return Math.abs(av - bv) <= 0.002;
          });
        } else {
          equal = Array.isArray(a) && Array.isArray(b) ? sameList(a, b) : a === b;
        }
        if (!equal) changed = true;
      }
      family[id] = next;
    }
    for (const child of Object.values(family)) {
      for (const parentId of child.parents || []) {
        const parent = family[parentId];
        if (!parent) continue;
        if (!parent.children.includes(child.id)) {
          parent.children.push(child.id);
          changed = true;
        }
      }
    }
    for (const parent of Object.values(family)) {
      const nextChildren = uniqueIds(parent.children, known).filter(childId => family[childId]?.parents?.includes(parent.id));
      if (!sameList(parent.children || [], nextChildren)) {
        parent.children = nextChildren;
        changed = true;
      }
    }
    for (const id of Object.keys(family)) {
      const n = family[id];
      if (!n?.hasPaired && !(n?.parents || []).length && !(n?.children || []).length) {
        delete family[id];
        changed = true;
      }
    }
    for (const [id, live] of liveById.entries()) {
      const n = family[id];
      if (!n) continue;
      if (!sameList(live.parents || [], n.parents || [])) {
        live.parents = [...(n.parents || [])];
        changed = true;
      }
      if (!sameList(live.children || [], n.children || [])) {
        live.children = [...(n.children || [])];
        changed = true;
      }
      if (live.hasPaired !== !!n.hasPaired) {
        live.hasPaired = !!n.hasPaired;
        changed = true;
      }
      if (live.generation !== n.generation) {
        live.generation = n.generation;
        changed = true;
      }
    }
    if (changed) {
      this.familyVersion = (this.familyVersion || 0) + 1;
      this.markFamilyTreeDirty("family-normalize");
    }
    this.familyCleanVersion = this.familyVersion || 0;
    return changed;
  },

  resetFamilyTree() {
    this.family = {};
    this.familyCleanVersion = 0;
    this.familyVersion = (this.familyVersion || 0) + 1;
    this.markFamilyTreeDirty("family-reset");
    this.maxGeneration = 1;
    for (const t of this.tarinai || []) {
      t.parents = [];
      t.parentNames = [];
      t.children = [];
      t.generation = 1;
      t.hasPaired = false;
    }
  },


  clearLiveReferencesTo(dead) {
    const deadId = dead?.id || dead?.releasedLiveId || "";
    if (!deadId) return false;
    let changed = false;
    for (const other of this.tarinai || []) {
      if (!other || other === dead || other.dead) continue;
      if (other.target === dead || other.target?.id === deadId) {
        other.target = null;
        if (["seek_friend", "panic", "fight", "intimidate"].includes(other.state)) other.goIdle?.("\u53c2\u7167\u3057\u3066\u3044\u305f\u76f8\u624b\u304c\u3044\u306a\u304f\u306a\u3063\u305f");
        changed = true;
      }
      if (other.panicTarget === dead || other.panicTarget?.id === deadId) { other.panicTarget = null; changed = true; }
      if (other.fightTargetId === deadId) { other.fightTargetId = null; changed = true; }
      if (Array.isArray(other.fightTargetIds) && other.fightTargetIds.includes(deadId)) {
        other.fightTargetIds = other.fightTargetIds.filter(id => id !== deadId);
        changed = true;
      }
      for (const key of ["defeatedById", "fightWinnerId", "intimidateTargetId", "birthPartnerId"]) {
        if (other[key] === deadId) { other[key] = null; changed = true; }
      }
    }
    return changed;
  },

  markDead(t, reason) {
    this.clearLiveReferencesTo(t);
    if (!this.family) this.family = {};
    const finalReason = t?.normalizeDeathReason ? t.normalizeDeathReason(reason) : reason;
    const familyKey = this.tarinaiFamilyKey(t);
    if (familyKey && this.family[familyKey]) {
      if (this.family[familyKey].alive !== false || this.family[familyKey].deathReason !== finalReason) {
        this.family[familyKey].alive = false;
        this.family[familyKey].deathReason = finalReason;
        delete this.family[familyKey].personality;
        this.familyVersion = (this.familyVersion || 0) + 1;
        this.markFamilyTreeDirty("death");
      }
    }
    this.familyPrunePending = true;
  },

  pruneExtinctFamilies(opts = {}) {
    if (opts.normalize !== false) this.normalizeFamily();
    const family = this.family || {};
    const nodes = Object.values(family).filter(Boolean).filter(n => n.hasPaired || (n.parents || []).length || (n.children || []).length);
    if (!nodes.length) return;
    const components = globalThis.TarinaiFamilyGraph.connectedComponents
      ? globalThis.TarinaiFamilyGraph.connectedComponents(nodes)
      : [];
    const remove = components.length
      ? components.filter(comp => !comp.some(n => family[n.id]?.alive)).flat().map(n => n.id)
      : [];
    if (!remove.length) return;
    for (const id of remove) delete family[id];
    this.familyVersion = (this.familyVersion || 0) + 1;
    this.markFamilyTreeDirty("family-prune");
    this.familyCleanVersion = this.familyVersion || 0;
  },

  addTarinai(opts = {}) {
    opts = global.TarinaiSeedFactory.prepareAddOptions(this, opts) || opts;
    const seedParents = Array.isArray(opts.seedParents) ? opts.seedParents.filter(p => p && typeof p === "object") : [];
    if (!opts.genetics && seedParents.length >= 2 && typeof inheritedGenetics === "function") {
      opts.genetics = inheritedGenetics(seedParents[0], seedParents[1], opts.birthSeed || opts.familyKey || "");
    }
    if (opts.genetics) {
      if (!Number.isFinite(opts.adultScale) && typeof adultScaleFromGenetics === "function") opts.adultScale = adultScaleFromGenetics(opts.birthSeed || opts.familyKey || "", opts.genetics);
      if (!Number.isFinite(opts.lifeSpan)) {
        const profile = global.TarinaiSeedFactory.birthProfile(opts.birthSeed || opts.familyKey || "", opts) || {};
        if (Number.isFinite(profile.lifeSpan)) opts.lifeSpan = profile.lifeSpan;
      }
    }
    const t = new Tarinai(this, opts);
    this.assignTarinaiLiveId(t);
    this.tarinai.push(t);
    this.drawListDirty = true;
    if (t.hasPaired || (t.parents || []).length || (t.children || []).length) this.recordFamily(t);
    this.maxGeneration = Math.max(this.maxGeneration, t.generation);
    this.emit?.("tarinai:born", { tarinai: t, source: opts.parents?.length ? "family" : "spawn" });
    return t;
  },

  nestBoxOccupants(box, limit = 5) {
    return globalThis.TarinaiNestSleepSystem.nestBoxOccupants(this, box, limit) || [];
  },

  pointerNestBoxInfo() {
    const p = this.pointer;
    if (!p?.inside) return null;
    let best = null, bestD = Infinity;
    for (const it of this.nearbyItems(p.x, p.y, 140)) {
      if (!it || it.dead || it.type !== "nest_box") continue;
      const d = distXY(p.x, p.y, it.x, it.y);
      if (d < bestD && d <= Math.max(80, it.r * 2.1)) { best = it; bestD = d; }
    }
    if (!best) return null;
    const occupants = this.nestBoxOccupants(best, Infinity);
    const capacity = this.nestBoxCapacity(best);
    return { box: best, occupants, capacity };
  },

  nestBoxTooltipLines(box) {
    if (!box || box.dead || box.type !== "nest_box") return [];
    const occupants = this.nestBoxOccupants(box, Infinity);
    const names = occupants.map(t => t?.name).filter(Boolean).slice(0, 5);
    const more = occupants.length > names.length ? `\u3001\u307b\u304b${occupants.length - names.length}\u5339` : "";
    return ["\u5de3\u7bb1", names.length ? `\u5165\u3063\u3066\u308b\u5b50: ${names.join("\u3001")}${more}` : "\u5165\u3063\u3066\u308b\u5b50: \u306a\u3057", this.temperatureTooltipLineFor?.(box, "内部気温")].filter(Boolean);
  },


  temperatureTooltipLineFor(target, label = "体感気温") {
    if (!target || !this.temperatureAt) return "";
    const temp = this.temperatureAt(target.x, target.y);
    if (!Number.isFinite(Number(temp))) return "";
    const status = this.temperatureStatusFor?.(temp) || null;
    const suffix = status?.label ? `（${status.label}）` : "";
    return `${label}: ${Number(temp).toFixed(1)}℃${suffix}`;
  },

  pointerTarinaiTooltipInfo() {
    const p = this.pointer;
    if (!p?.inside || !Array.isArray(this.tarinai)) return null;
    let best = null, bestD = Infinity;
    for (const t of this.tarinai) {
      if (!t || t.dead) continue;
      const d = distXY(p.x, p.y, t.x, t.y);
      const limit = Math.max(46, (t.radius || 20) * 1.35);
      if (d <= limit && d < bestD) { best = t; bestD = d; }
    }
    if (!best) return null;
    const behavior = (typeof behaviorText === "function" ? behaviorText(best) : "") || window.TEXT_CATALOG?.stateLabel?.(best.state, best) || best.thought || "";
    const maxEnergy = typeof tarinaiMaxEnergy === "function" ? tarinaiMaxEnergy(best) : (Number(best.maxEnergy) || 100);
    const statusLine = `体力: ${Math.round(best.energy || 0)}/${Math.round(maxEnergy)}　空腹: ${Math.round(best.hunger || 0)}　ストレス: ${Math.round(best.stress || 0)}`;
    const tempLine = this.temperatureTooltipLineFor(best, "体感気温");
    return { target: best, lines: [best.name || "たりない", behavior, statusLine, tempLine].filter(Boolean), kind: "tarinai" };
  },

  pointerOwnedBedInfo() {
    const p = this.pointer;
    if (!p?.inside) return null;
    let best = null, bestD = Infinity;
    for (const it of this.nearbyItems(p.x, p.y, 140)) {
      if (!it || it.dead || it.type !== "grass_bed") continue;
      const d = distXY(p.x, p.y, it.x, it.y);
      if (d < bestD && d <= Math.max(60, (it.r || 24) * 2.0)) { best = it; bestD = d; }
    }
    if (!best) return null;
    const owner = this.liveTarinaiById?.(best.ownerId) || null;
    return { bed: best, owner };
  },

  ownedBedTooltipLines(bed) {
    if (!bed || bed.dead || bed.type !== "grass_bed") return [];
    const owner = this.liveTarinaiById?.(bed.ownerId) || null;
    return ["\u304b\u3093\u305f\u3093\u30d9\u30c3\u30c9", `\u6301\u3061\u4e3b: ${owner?.name || "\u4e0d\u660e"}`, this.temperatureTooltipLineFor?.(bed, "周辺気温")].filter(Boolean);
  },

  pointerItemTooltipInfo() {
    const tarinaiInfo = this.pointerTarinaiTooltipInfo?.();
    if (tarinaiInfo?.target) return tarinaiInfo;
    const nest = this.pointerNestBoxInfo?.();
    if (nest?.box) return { target: nest.box, lines: this.nestBoxTooltipLines(nest.box), kind: "nest_box" };
    const bedInfo = this.pointerOwnedBedInfo?.();
    if (bedInfo?.bed) return { target: bedInfo.bed, lines: this.ownedBedTooltipLines(bedInfo.bed), kind: "grass_bed" };
    return null;
  },

  startBirthRitual(a, b) {
    if (!a || !b || a.dead || b.dead) return false;
    if (!this.tarinai?.includes?.(a) || !this.tarinai?.includes?.(b)) return false;
    if (!!a.isZunchiSlave !== !!b.isZunchiSlave) return false;
    if (this.areParentChild(a, b)) return false;
    if (a.sleepDisease || b.sleepDisease || a.fightDisease || b.fightDisease) return false;
    if (a.birthRitualTimer > 0.04 || b.birthRitualTimer > 0.04) return false;
    const aJoined = a.familyJoined ? a.familyJoined() : Boolean((a.parents || []).length || (a.children || []).length);
    const bJoined = b.familyJoined ? b.familyJoined() : Boolean((b.parents || []).length || (b.children || []).length);
    if (aJoined && !bJoined) b.generation = a.generation;
    else if (bJoined && !aJoined) a.generation = b.generation;
    else if (!aJoined && !bJoined) { a.generation = 1; b.generation = 1; }
    // Do not mark either parent as part of a family during the ritual.
    // The archive should only gain nodes after a child has actually been created;
    // otherwise childless ritual participants appear as isolated family trees.
    const duration = 10.0;
    a.birthRitualTimer = b.birthRitualTimer = duration;
    a.birthRitualMax = b.birthRitualMax = duration;
    a.birthPartnerId = b.id;
    b.birthPartnerId = a.id;
    a.birthRitualRole = -1;
    b.birthRitualRole = 1;
    a.birthRitualLeader = true;
    b.birthRitualLeader = false;
    const ritualReason = "\u3078\u3053\u3078\u3053\u3057\u3066\u3044\u308b";
    const applyRitualAction = (actor, partner) => {
      if (!actor) return false;
      if (typeof actor.setActionState === "function") {
        actor.setActionState("birth_ritual", { target: partner || null, reason: ritualReason, need: "social", subNeed: "mate", actionId: "birth_ritual", phase: "acting" });
        return true;
      }
      actor.state = "birth_ritual";
      actor.target = partner || null;
      actor.thought = ritualReason;
      actor.sleeping = false;
      setBehaviorText(actor, { need: "social", subNeed: "mate", actionId: "birth_ritual", actionLabel: ritualReason, reasonText: ritualReason, target: partner || null, phase: "acting", source: "state" });
      return true;
    };
    applyRitualAction(a, b);
    applyRitualAction(b, a);
    const aBehavior = currentTarinaiBehavior(a);
    const bBehavior = currentTarinaiBehavior(b);
    const aLoveCause = (aBehavior?.source === "love_mochi" || (a.loveMochiTimer || 0) > 0.04) ? "\u3078\u3053\u9905\u306e\u52b9\u679c" : `${b.name || "\u76f8\u624b"}\u304c\u6c17\u306b\u306a\u308b`;
    const bLoveCause = (bBehavior?.source === "love_mochi" || (b.loveMochiTimer || 0) > 0.04) ? "\u3078\u3053\u9905\u306e\u52b9\u679c" : `${a.name || "\u76f8\u624b"}\u304c\u6c17\u306b\u306a\u308b`;
    const aText = buildReasonText("social", aBehavior?.tiedNeeds || ["social"], { id: "birth_ritual", need: "social", subNeed: "mate", label: `${b.name || "\u76f8\u624b"}\u3068\u3078\u3053\u3078\u3053\u3057\u3066\u3044\u308b` }, a, this, { causeText: aLoveCause });
    const bText = buildReasonText("social", bBehavior?.tiedNeeds || ["social"], { id: "birth_ritual", need: "social", subNeed: "mate", label: `${a.name || "\u76f8\u624b"}\u3068\u3078\u3053\u3078\u3053\u3057\u3066\u3044\u308b` }, b, this, { causeText: bLoveCause });
    setBehaviorText(a, { need: "social", subNeed: "mate", actionId: "birth_ritual", actionLabel: `${b.name || "\u76f8\u624b"}\u3068\u3078\u3053\u3078\u3053\u3057\u3066\u3044\u308b`, reasonText: aText, causeText: aLoveCause, target: b });
    setBehaviorText(b, { need: "social", subNeed: "mate", actionId: "birth_ritual", actionLabel: `${a.name || "\u76f8\u624b"}\u3068\u3078\u3053\u3078\u3053\u3057\u3066\u3044\u308b`, reasonText: bText, causeText: bLoveCause, target: a });
    a.reproductionTimer = CONFIG.reproductionCooldown + rand(2, 10);
    b.reproductionTimer = CONFIG.reproductionCooldown + rand(2, 10);
    a.surpriseTimer = Math.max(a.surpriseTimer, 0.35);
    b.surpriseTimer = Math.max(b.surpriseTimer, 0.35);
    return true;
  },

  cancelBirthRitual(actor, options = {}) {
    const source = actor || null;
    const partnerId = source?.birthPartnerId || null;
    const partner = partnerId ? this.liveTarinaiById?.(partnerId) : null;
    const participants = [];
    if (source) participants.push(source);
    if (partner && partner !== source) participants.push(partner);
    if (!participants.length) return false;
    const reason = options.reason || "\u7e41\u6b96\u304c\u4e2d\u65ad\u3055\u308c\u305f";
    let canceled = false;
    for (const t of participants) {
      if (!t || t.dead) continue;
      if ((t.birthRitualTimer || 0) <= 0.04 && t.state !== "birth_ritual") continue;
      t.birthRitualTimer = 0;
      t.birthRitualMax = 0;
      t.birthPartnerId = null;
      t.birthRitualLeader = false;
      t.birthRitualRole = 0;
      t.postBirthPeaceTimer = Math.max(t.postBirthPeaceTimer || 0, 1.4);
      t.behaviorLockTimer = Math.max(t.behaviorLockTimer || 0, 0.25);
      clearTarinaiBehavior(t, { reason });
      clearForcedBehaviorQueue(t, e => e && (e.id === "approach_mate" || e.id === "birth_ritual"));
      if (options.panic && t === source) {
        if (t.enterPanic) t.enterPanic({ target: options.target || null, reason, fear: options.fear ?? 0.95, wake: true, cause: options.cause || "birth_ritual_interrupted" });
        else t.setActionState?.("panic", { target: options.target || null, reason, wake: true });
        t.fearTimer = Math.max(t.fearTimer || 0, options.fear ?? 0.95);
      } else {
        t.goIdle?.(reason);
        t.thought = reason;
      }
      canceled = true;
    }
    if (canceled && !options.silentLog && this.time - (this.lastBirthCancelLogAt || -999) > 1.2) {
      this.log?.(reason, "birth", { participants });
      this.lastBirthCancelLogAt = this.time || 0;
    }
    return canceled;
  },

  cancelBirthRitualOnForce(tarinai, force = 0, options = {}) {
    if (!tarinai || tarinai.dead) return false;
    if ((tarinai.birthRitualTimer || 0) <= 0.04 && tarinai.state !== "birth_ritual") return false;
    const amount = Number(force) || 0;
    const threshold = Number(options.threshold || 180) || 180;
    if (amount < threshold) return false;
    return this.cancelBirthRitual(tarinai, {
      reason: options.reason || "\u5f37\u3044\u885d\u6483\u3067\u7e41\u6b96\u304c\u4e2d\u65ad\u3055\u308c\u305f",
      target: options.target || null,
      fear: options.fear ?? 1.0,
      cause: options.cause || "external_force",
      panic: options.panic !== false,
      silentLog: !!options.silentLog,
    });
  },

  finishBirthRitual(a, b) {
    if (!a || !b || a.dead || b.dead) return null;
    const reproductionBlockedByDisease = a.sleepDisease || b.sleepDisease || a.fightDisease || b.fightDisease;
    a.birthRitualTimer = b.birthRitualTimer = 0;
    a.birthPartnerId = b.birthPartnerId = null;
    a.birthRitualLeader = b.birthRitualLeader = false;
    a.goIdle("\u8a95\u751f\u306e\u524d\u3076\u308c\u304c\u7d42\u308f\u3063\u305f");
    b.goIdle("\u8a95\u751f\u306e\u524d\u3076\u308c\u304c\u7d42\u308f\u3063\u305f");
    if (reproductionBlockedByDisease || (!!a.isZunchiSlave !== !!b.isZunchiSlave)) {
      a.birthRitualRole = b.birthRitualRole = 0;
      return null;
    }
    a.fightTimer = b.fightTimer = 0;
    a.fightTargetIds = []; b.fightTargetIds = [];
    a.fightTargetId = b.fightTargetId = null;
    a.defeatedById = b.defeatedById = null;
    a.postBirthPeaceTimer = b.postBirthPeaceTimer = 18;
    a.fightCooldown = b.fightCooldown = Math.max(CONFIG.fightCooldown + 8, a.fightCooldown || 0, b.fightCooldown || 0);
    const children = [];
    const countRoll = Math.random();
    const childCount = countRoll < 0.08 ? 3 : (countRoll < 0.36 ? 2 : 1);
    for (let i = 0; i < childCount; i++) {
      const child = this.spawnChild(a, b, i, childCount);
      if (child) { child.postBirthPeaceTimer = 18; children.push(child); }
    }
    if (children.length > 0) this.lastBirthAt = this.time;
    if (children.length > 1) this.log(`${a.name}\u3068${b.name}\u306e\u5b50\u304c${children.length}\u5339\u751f\u307e\u308c\u305f\u3002`, "birth", { participants: [a, b, ...children] });
    return children[0] || null;
  },

  areParentChild(a, b) {
    if (!a || !b) return false;
    const aId = this.tarinaiFamilyKey(a) || a;
    const bId = this.tarinaiFamilyKey(b) || b;
    if (!aId || !bId) return false;
    return Boolean((a.parents || []).includes(bId) || (a.children || []).includes(bId) || (b.parents || []).includes(aId) || (b.children || []).includes(aId));
  },

  areCoParents(a, b) {
    if (!a || !b) return false;
    const aLiveId = a.id || a;
    const bLiveId = b.id || b;
    if (!aLiveId || !bLiveId || aLiveId === bLiveId) return false;
    if (a.birthPartnerId && a.birthPartnerId === bLiveId) return true;
    if (b.birthPartnerId && b.birthPartnerId === aLiveId) return true;
    const aId = this.tarinaiFamilyKey(a) || aLiveId;
    const bId = this.tarinaiFamilyKey(b) || bLiveId;
    if (!aId || !bId || aId === bId) return false;
    const aChildren = new Set((a.children || []).filter(Boolean));
    if (!aChildren.size) return false;
    for (const id of (b.children || [])) {
      if (aChildren.has(id)) return true;
    }
    return false;
  },

  canStartFight(t) {
    if (!t || t.dead || typeof t.relationTo !== "function") return false;
    if (t.sleepDisease) return false;
    // Disease fight rule: explosion, zunchi, and fight disease can lash out;
    // sleep disease cannot fight or be challenged, and other diseases cannot start fights.
    if (t.explosionDisease || t.zunchiDisease || t.fightDisease) return true;
    const flag = (value) => typeof value === "function" ? Boolean(value.call(t)) : Boolean(value);
    const hasOtherDisease = flag(t.disease) || flag(t.sick) || flag(t.infection) || flag(t.hasDisease);
    if (hasOtherDisease) return false;
    return true;
  },

  canBeFightTarget(t) {
    return Boolean(t && !t.dead && typeof t.relationTo === "function" && !t.sleepDisease);
  },

  canFightPair(actor, target) {
    return this.canStartFight(actor) && this.canBeFightTarget(target);
  },

  spawnChild(a, b, index = 0, total = 1) {
    const zunchiSlaveChild = !!(a.isZunchiSlave && b.isZunchiSlave);
    const child = this.addTarinai({
      seedParents: [a, b],
      isZunchiSlave: zunchiSlaveChild,
      age: 0,
      x: (a.x + b.x) / 2 + rand(-14, 14) + (index - (total - 1) / 2) * 18,
      y: (a.y + b.y) / 2 + rand(-14, 14) + (total > 1 ? rand(-10, 10) : 0),
      hunger: rand(20, 40),
      loneliness: rand(30, 56),
      energy: rand(55, 95),
      stress: rand(0, 14),
      need: "",
      generation: Math.max(a.generation, b.generation) + 1,
      parents: [this.tarinaiFamilyKey(a), this.tarinaiFamilyKey(b)],
      parentNames: [a.name, b.name],
      birthTime: this.time,
      powerItemMode: "",
      sizeItemMode: "",
      lifeItemMode: "",
    });
    if (zunchiSlaveChild) child.becomeZunchiSlave?.({ birth: true });
    this.maxGeneration = Math.max(this.maxGeneration, child.generation);
    a.hasPaired = true;
    b.hasPaired = true;
    a.affection = 0; b.affection = 0;
    a.loneliness *= 0.65; b.loneliness *= 0.65;
    a.adjustRelation?.(b, 0.65, -0.20, "co_parent");
    b.adjustRelation?.(a, 0.65, -0.20, "co_parent");
    a.postBirthPeaceTimer = Math.max(a.postBirthPeaceTimer || 0, 28);
    b.postBirthPeaceTimer = Math.max(b.postBirthPeaceTimer || 0, 28);
    const childKey = this.tarinaiFamilyKey(child);
    const aKey = this.tarinaiFamilyKey(a);
    const bKey = this.tarinaiFamilyKey(b);
    a.children.push(childKey);
    b.children.push(childKey);
    this.recordFamily(a);
    this.recordFamily(b);
    this.recordFamily(child);
    if (this.family[aKey] && !this.family[aKey].children.includes(childKey)) this.family[aKey].children.push(childKey);
    if (this.family[bKey] && !this.family[bKey].children.includes(childKey)) this.family[bKey].children.push(childKey);
    this.familyCleanVersion = null;
    this.lastBirthAt = this.time;
    if (total <= 1) this.log(`${child.name}\u304c${a.name}\u3068${b.name}\u306e\u5b50\u3068\u3057\u3066\u751f\u307e\u308c\u305f\u3002`, "birth", { participants: [child, a, b] });
    return child;
  },

  fightPairKey(a, b) {
    const aid = a?.id || a?.familyKey || "";
    const bid = b?.id || b?.familyKey || "";
    if (!aid || !bid) return "";
    return String(aid) < String(bid) ? `${aid}:${bid}` : `${bid}:${aid}`;
  },

  fightPairCooldownRemaining(a, b) {
    const key = this.fightPairKey?.(a, b);
    if (!key) return 0;
    const until = Number(this.fightPairCooldowns?.[key] || 0) || 0;
    return Math.max(0, until - (this.time || 0));
  },

  markFightPairCooldown(a, b, seconds = 3.2) {
    const key = this.fightPairKey?.(a, b);
    if (!key) return;
    this.fightPairCooldowns = this.fightPairCooldowns || {};
    this.fightPairCooldowns[key] = Math.max(Number(this.fightPairCooldowns[key] || 0) || 0, (this.time || 0) + Math.max(0.2, Number(seconds) || 3.2));
  },

  isAlreadyFightingPair(a, b) {
    if (!a || !b) return false;
    return a.fightTimer > 0.04 && b.fightTimer > 0.04 && ((a.fightTargetIds || []).includes(b.id) || a.fightTargetId === b.id) && ((b.fightTargetIds || []).includes(a.id) || b.fightTargetId === a.id);
  },

  startForcedFight(a, b) {
    if (!a || !b || a === b || a.dead || b.dead) return false;
    if (!this.canFightPair(a, b)) return false;
    const alreadyFighting = this.isAlreadyFightingPair?.(a, b);
    if (alreadyFighting) return true;
    if ((a.fightTimer || 0) > 0.04 || (b.fightTimer || 0) > 0.04) return false;
    if (this.fightPairCooldownRemaining?.(a, b) > 0.04) return false;
    const maxForcedFightDistance = Math.max(142, (a.radius || 20) + (b.radius || 20) + 96);
    if (dist(a, b) > maxForcedFightDistance) return false;
    if ((a.fightCooldown || 0) > 0.04 || (b.fightCooldown || 0) > 0.04) return false;
    for (const t of [a, b]) {
      t.birthRitualTimer = 0;
      t.birthRitualMax = 0;
      t.birthPartnerId = null;
      t.birthRitualLeader = false;
      t.birthRitualRole = 0;
      t.postBirthPeaceTimer = 0;
      t.intimidateTimer = 0;
      t.intimidateTargetId = null;
      t.intimidatedTimer = 0;
      t.defeatedTimer = 0;
      t.defeatedById = null;
      t.fightWinnerId = null;
      t.goIdle("");
    }
    this.startFightMochiIntimidation(a, b);
    this.startFight(a, b, { forced: true, initiator: a });
    return true;
  },

  startFightMochiIntimidation(a, b) {
    if (!a || !b || a.dead || b.dead) return false;
    const aDrug = (a.fightMochiTimer || 0) > 0.04;
    const bDrug = (b.fightMochiTimer || 0) > 0.04;
    const actor = aDrug && !bDrug ? a : (!aDrug && bDrug ? b : (a.energy + a.stress * 0.36 >= b.energy + b.stress * 0.36 ? a : b));
    const target = actor === a ? b : a;
    if (!this.canFightPair(actor, target)) return false;
    actor.intimidateTimer = Math.max(actor.intimidateTimer || 0, deterministicRange(this, "fight-mochi-intimidate-actor-timer", 0.85, 1.35, actor, target));
    actor.intimidateTargetId = target.id;
    actor.surpriseTimer = Math.max(actor.surpriseTimer || 0, 0.28);
    target.intimidatedTimer = Math.max(target.intimidatedTimer || 0, deterministicRange(this, "fight-mochi-intimidate-target-timer", 0.75, 1.25, actor, target));
    target.fearTimer = Math.max(target.fearTimer || 0, 0.72 * target.personalityProfile().fear);
    actor.adjustRelation(target, -0.05, 0.06, "intimidate");
    target.adjustRelation(actor, -0.12, 0.30 * target.personalityProfile().fear, "intimidate");
    this.effects.push(new Effect("ring", actor.x, actor.y - actor.radius * 0.65, {
      life: 0.34,
      size: actor.radius * 0.62,
      color: "rgba(154, 88, 42, 0.74)",
    }));
    this.spawnBubble(actor.x, actor.y - actor.radius * 1.30, "!", "rgba(120,62,38,0.82)");
    return true;
  },

  startConflict(a, b) {
    if (!a || !b || a.dead || b.dead) return false;
    if (typeof a.relationTo !== "function" || typeof b.relationTo !== "function") return false;
    if ((a.fightMochiTimer || 0) > 0.04 || (b.fightMochiTimer || 0) > 0.04) return this.startForcedFight(a, b);
    if (this.areParentChild(a, b) || this.areCoParents?.(a, b)) return false;
    if ((a.postBirthPeaceTimer || 0) > 0 || (b.postBirthPeaceTimer || 0) > 0) return false;
    if ((a.postConflictPeaceTimer || 0) > 0.04 || (b.postConflictPeaceTimer || 0) > 0.04) return false;
    if (this.fightPairCooldownRemaining?.(a, b) > 0.04) return false;
    if (a.fightTimer > 0.04 || b.fightTimer > 0.04 || a.intimidateTimer > 0.04 || b.intimidateTimer > 0.04) return false;
    const aAggressiveIntent = a.shouldApplyPersonalityBehavior?.("aggression", 1) ? 1 : 0;
    const bAggressiveIntent = b.shouldApplyPersonalityBehavior?.("aggression", 1) ? 1 : 0;
    const scoreA = a.energy * 0.38 + a.mood * 0.18 + a.stress * 0.12 + (a.type === "angry" ? 12 : 0) + aAggressiveIntent * 8 + ((typeof b.relationTo === "function" ? (b.relationTo(a.id).fear || 0) : 0) * 0.65) + (a.isZunchiSlave ? -10 : 0) + ((a.fightMochiTimer || 0) > 0.04 ? 9 : 0) + deterministicRange(this, "conflict-score-a", -5, 5, a, b);
    const scoreB = b.energy * 0.38 + b.mood * 0.18 + b.stress * 0.12 + (b.type === "angry" ? 12 : 0) + bAggressiveIntent * 8 + ((typeof a.relationTo === "function" ? (a.relationTo(b.id).fear || 0) : 0) * 0.65) + (b.isZunchiSlave ? -10 : 0) + ((b.fightMochiTimer || 0) > 0.04 ? 9 : 0) + deterministicRange(this, "conflict-score-b", -5, 5, a, b);
    const actor = scoreA >= scoreB ? a : b;
    const target = actor === a ? b : a;
    if (!this.canFightPair(actor, target)) return false;
    const actorScore = actor === a ? scoreA : scoreB;
    const targetScore = actor === a ? scoreB : scoreA;
    const canIntimidate = !actor.lowHealthSprite || !actor.lowHealthSprite();
    const intimidationChance = 0.30;
    if (canIntimidate && deterministicChance(this, "conflict-intimidation-choice", intimidationChance, actor, target)) {
      return this.startIntimidation(actor, target, actorScore, targetScore);
    }
    return this.startFight(actor, target, { initiator: actor });
  },

  startIntimidation(actor, target, actorScore = 0, targetScore = 0) {
    if (!actor || !target || actor.dead || target.dead) return false;
    if ((actor.fightTimer || 0) > 0.04 || (target.fightTimer || 0) > 0.04) return false;
    if ((actor.intimidateTimer || 0) > 0.04 || (target.intimidateTimer || 0) > 0.04) return false;
    if (this.fightPairCooldownRemaining?.(actor, target) > 0.04) return false;
    if (actor.lowHealthSprite && actor.lowHealthSprite()) return false;
    const fearLoad = ((typeof target.relationTo === "function" ? (target.relationTo(actor.id).fear || 0) : 0) * 0.72) + target.personalityProfile().fear * 8;
    const actorAggression = Math.max(0, actor.currentPersonality?.aggression || 0);
    const targetAggression = Math.max(0, target.currentPersonality?.aggression || 0);
    const actorSize = actor.effectiveScale ? actor.effectiveScale() : (actor.scale || 0.28);
    const targetSize = target.effectiveScale ? target.effectiveScale() : (target.scale || 0.28);
    const sizeEdge = clamp((actorSize - targetSize) / 0.16, -1, 1);
    const aggressionEdge = clamp(actorAggression - targetAggression * 0.55, -1, 1);
    const resistance = target.energy * 0.30 + target.mood * 0.16 + targetAggression * 8 + (target.shouldApplyPersonalityBehavior?.("aggression", 1) ? 5 : 0) + deterministicRange(this, "intimidation-resistance", -5, 5, actor, target);
    const successChance = clamp(0.56 + (actorScore - targetScore + fearLoad - resistance) / 82 + aggressionEdge * 0.13 + sizeEdge * 0.16, 0.30, 0.96);
    actor.surpriseTimer = Math.max(actor.surpriseTimer, 0.20);
    target.surpriseTimer = Math.max(target.surpriseTimer, 0.32);
    actor.fightCooldown = CONFIG.fightCooldown + deterministicRange(this, "intimidation-actor-cooldown", 1, 4, actor, target);
    target.fightCooldown = CONFIG.fightCooldown + deterministicRange(this, "intimidation-target-cooldown", 1, 4, actor, target);
    actor.intimidateTimer = Math.max(actor.intimidateTimer, deterministicRange(this, "intimidation-actor-timer", 1.05, 1.65, actor, target));
    actor.intimidateTargetId = target.id;
    actor.setActionState("intimidate", { target, reason: "\u76f8\u624b\u3092\u5a01\u5687\u3057\u3066\u3044\u308b" });
    setBehaviorText(actor, { need: "social", subNeed: "conflict", actionId: "intimidate_enemy", actionLabel: "\u5a01\u5687\u3057\u3066\u3044\u308b", reasonText: `${target.name || "\u76f8\u624b"}\u3092\u5a01\u5687\u3057\u3066\u3044\u308b`, target, phase: "perform", source: "behavior" });
    this.effects.push(new Effect("ring", actor.x, actor.y - actor.radius * 0.65, {
      life: 0.42,
      size: actor.radius * 0.55,
      color: "rgba(145, 106, 55, 0.70)",
    }));
    this.spawnBubble(actor.x, actor.y - actor.radius * 1.30, "\u306f\u3046\u30fc\uff01", "rgba(92,62,34,0.82)");
    target.intimidatedTimer = Math.max(target.intimidatedTimer || 0, deterministicRange(this, "intimidation-target-prep-timer", 0.95, 1.55, actor, target));
    target.fearTimer = Math.max(target.fearTimer, 0.65 * target.personalityProfile().fear);
    if (!deterministicChance(this, "intimidation-success", successChance, actor, target)) {
      actor.adjustPersonality?.("aggression", -0.018, "after failed intimidation");
      target.adjustRelation(actor, -0.08, 0.22 * target.personalityProfile().fear, "intimidate");
      actor.intimidateTimer = 0;
      actor.intimidateTargetId = null;
      target.intimidatedTimer = 0;
      if (actor.state === "intimidate") actor.goIdle("\u5a01\u5687\u306b\u5931\u6557\u3057\u305f");
      if (target.state === "panic") target.goIdle("\u5a01\u5687\u304b\u3089\u623b\u3063\u305f");
      actor.spriteLockUntil = 0;
      target.spriteLockUntil = 0;
      this.startFight(actor, target, { initiator: actor });
      return true;
    }
    actor.adjustPersonality?.("aggression", 0.018, "after successful intimidation");
    target.defeatedById = actor.id;
    target.fightWinnerId = actor.id;
    target.defeatedTimer = Math.max(target.defeatedTimer, deterministicRange(this, "intimidation-defeated-timer", 1.8, 2.8, actor, target));
    target.intimidatedTimer = Math.max(target.intimidatedTimer || 0, deterministicRange(this, "intimidation-success-timer", 1.2, 2.0, actor, target));
    if (target.enterPanic) target.enterPanic({ threat: actor, target: actor, reason: "\u5a01\u5687\u3055\u308c\u3066\u9003\u3052\u3066\u3044\u308b", fear: 1.35, wake: true, cause: "intimidated" });
    else { target.fearTimer = Math.max(target.fearTimer, 1.35 * target.personalityProfile().fear); target.setActionState?.("panic", { target: actor, reason: "\u5a01\u5687\u3055\u308c\u3066\u9003\u3052\u3066\u3044\u308b", wake: true }); }
    this.spawnBubble(target.x, target.y - target.radius * 1.28, "\u306f\u3041\u3041\u3041\uff01", "rgba(84,66,86,0.80)");
    target.vx += (target.x < actor.x ? -1 : 1) * deterministicRange(this, "intimidation-knockback-x", 26, 54, actor, target);
    target.vy += deterministicRange(this, "intimidation-knockback-y", -18, 18, actor, target);
    actor.adjustRelation(target, -0.08, 0.06, "intimidate");
    target.adjustRelation(actor, -0.22, 0.85 * target.personalityProfile().fear, "intimidate");
    if (this.time - Math.max(actor.lastLog, target.lastLog) > 5.5) {
      this.log(`${actor.name}\u306f${target.name}\u3092\u5a01\u5687\u3057\u3066\u8ffd\u3044\u6255\u3063\u305f\u3002`, "fight", { participants: [actor, target] });
      actor.lastLog = target.lastLog = this.time;
    }
    this.markFightPairCooldown?.(actor, target, 2.8);
    return true;
  },

  startFight(a, b, opts = {}) {
    if (!a || !b || a.dead || b.dead) return false;
    if (!this.canFightPair(a, b) && !this.canFightPair(b, a)) return false;
    if ((a.postBirthPeaceTimer || 0) > 0 || (b.postBirthPeaceTimer || 0) > 0) return false;
    if ((a.postConflictPeaceTimer || 0) > 0.04 || (b.postConflictPeaceTimer || 0) > 0.04) return false;
    if (this.isAlreadyFightingPair?.(a, b)) return true;
    const allowForcedStart = Boolean(opts?.forced);
    if (!allowForcedStart && ((a.fightTimer || 0) > 0.04 || (b.fightTimer || 0) > 0.04 || (a.intimidateTimer || 0) > 0.04 || (b.intimidateTimer || 0) > 0.04)) return false;
    if (!allowForcedStart && this.fightPairCooldownRemaining?.(a, b) > 0.04) return false;
    const maxStartFightDistance = Math.max(150, (a.radius || 20) + (b.radius || 20) + 104);
    if (dist(a, b) > maxStartFightDistance) return false;
    this.markFightPairCooldown?.(a, b, CONFIG.fightCooldown + 6);
    const initiator = opts?.initiator === b ? b : a;
    const receiver = initiator === a ? b : a;
    const causeFor = (self, other) => {
      if (((currentTarinaiBehavior(self))?.source === "fight_mochi") || (self.fightMochiTimer || 0) > 0.04) return "\u3051\u3093\u304b\u9905\u306e\u52b9\u679c";
      if (self === receiver && other === initiator) return `${other.name || "\u76f8\u624b"}\u306b\u3051\u3093\u304b\u3092\u58f2\u3089\u308c\u305f`;
      return `${other.name || "\u76f8\u624b"}\u304c\u6c17\u306b\u5165\u3089\u306a\u3044`;
    };
    const textFor = (self, other) => buildReasonText("social", getTarinaiBehaviorTiedNeeds(self, "social") || ["social"], { id: "fight_rival", need: "social", subNeed: "conflict", label: self === receiver ? "\u53cd\u6483\u3057\u3066\u3044\u308b" : `${other.name || "\u76f8\u624b"}\u3068\u55a7\u5629\u3057\u3066\u3044\u308b` }, self, this, { causeText: causeFor(self, other) });
    const reasonA = textFor(a, b);
    const reasonB = textFor(b, a);
    a.counterAttackFromId = a === receiver ? initiator.id : null;
    b.counterAttackFromId = b === receiver ? initiator.id : null;
    a.setActionState("fight", { target: b, reason: reasonA });
    b.setActionState("fight", { target: a, reason: reasonB });
    setBehaviorText(a, { need: "social", subNeed: "conflict", actionId: "fight_rival", actionLabel: a === receiver ? "\u53cd\u6483\u3057\u3066\u3044\u308b" : "\u55a7\u5629\u3057\u3066\u3044\u308b", reasonText: reasonA, causeText: causeFor(a, b), target: b, phase: "perform", source: "behavior" });
    setBehaviorText(b, { need: "social", subNeed: "conflict", actionId: "fight_rival", actionLabel: b === receiver ? "\u53cd\u6483\u3057\u3066\u3044\u308b" : "\u55a7\u5629\u3057\u3066\u3044\u308b", reasonText: reasonB, causeText: causeFor(b, a), target: a, phase: "perform", source: "behavior" });
    a.fightTimer = Math.max(a.fightTimer, deterministicRange(this, "fight-start-timer-a", 3.2, 4.8, a, b));
    b.fightTimer = Math.max(b.fightTimer, deterministicRange(this, "fight-start-timer-b", 3.2, 4.8, a, b));
    a.nextHeadbutt = this.time + deterministicRange(this, "fight-start-headbutt", 0.08, 0.18, a, b);
    b.nextHeadbutt = a.nextHeadbutt;
    a.fightCooldown = CONFIG.fightCooldown + deterministicRange(this, "fight-start-cooldown-a", 1, 5, a, b);
    b.fightCooldown = CONFIG.fightCooldown + deterministicRange(this, "fight-start-cooldown-b", 1, 5, a, b);
    if (!a.fightTargetIds) a.fightTargetIds = [];
    if (!b.fightTargetIds) b.fightTargetIds = [];
    if (!a.fightTargetIds.includes(b.id)) a.fightTargetIds.push(b.id);
    if (!b.fightTargetIds.includes(a.id)) b.fightTargetIds.push(a.id);
    a.fightTargetIds = a.fightTargetIds.slice(-4);
    b.fightTargetIds = b.fightTargetIds.slice(-4);
    a.fightTargetId = a.fightTargetIds[0];
    b.fightTargetId = b.fightTargetIds[0];
    if (a.addStress) a.addStress(deterministicRange(this, "fight-start-stress-a", 8, 18, a, b), { threshold: 8 });
    if (b.addStress) b.addStress(deterministicRange(this, "fight-start-stress-b", 8, 18, a, b), { threshold: 8 });
    // Damage is applied by repeated headbutt pulses while the fight is active.
    // Do not front-load or end-load a lump sum when the fight state starts/settles.
    const dx = b.x - a.x, dy = b.y - a.y;
    const d = Math.hypot(dx, dy) || 1;
    a.vx -= dx / d * deterministicRange(this, "fight-pulse-knockback-ax", 32, 62, a, b); a.vy -= dy / d * deterministicRange(this, "fight-pulse-knockback-ay", 32, 62, a, b);
    b.vx += dx / d * deterministicRange(this, "fight-pulse-knockback-bx", 32, 62, a, b); b.vy += dy / d * deterministicRange(this, "fight-pulse-knockback-by", 32, 62, a, b);
    a.surpriseTimer = 0.24; b.surpriseTimer = 0.24;
    this.effects.push(new Effect("fight", (a.x + b.x) / 2, (a.y + b.y) / 2 - 8, {
      size: deterministicRange(this, "fight-pulse-effect-size", 12, 20, a, b),
      life: deterministicRange(this, "fight-pulse-effect-life", 0.32, 0.52, a, b),
      color: "rgba(116, 73, 38, 0.82)",
    }));
    audio.fight();
    if (this.time - Math.max(a.lastLog, b.lastLog) > 6) {
      this.log(`${a.name}\u3068${b.name}\u304c\u5c0f\u3055\u306a\u55a7\u5629\u3092\u3057\u305f\u3002`, "fight", { participants: [a, b], sound: false });
      a.lastLog = b.lastLog = this.time;
    }
    return true;
  }
  }));
})(typeof window !== "undefined" ? window : globalThis);