"use strict";

class Item {
  constructor(type, x, y) {
    this.id = crypto.randomUUID ? crypto.randomUUID() : `${Date.now()}-${Math.random()}`;
    this.type = type;
    this.x = x;
    this.y = y;
    this.r = {
      food: 14, sweet: 13, love_mochi: 13, fight_mochi: 13, water: 12, grass: 17, stone: 20, bed: 37, ball: 18, firecracker: 15, fence_v: 42, fence_h: 42, trace: 16, splat: 26, zunchi: 14
    }[type] || 12;
    this.amount = {
      food: 85, sweet: 62, love_mochi: 62, fight_mochi: 62, water: 64, grass: 120, stone: 999, bed: 999, ball: 999, firecracker: 999, fence_v: 999, fence_h: 999, trace: 220, splat: 260, zunchi: 240
    }[type] || 80;
    this.age = 0;
    this.seed = Math.random() * 1000;
    this.dropTimer = 0;
    this.dropMax = 0;
    this.dropImpactDone = false;
    this.lifecycleTimer = rand(0, type === "grass" ? 1.15 : 0.55);
    this.lifecycleInterval = type === "grass" ? (1.75 + stableUnit(this.id, "grass-life") * 0.90) : (type === "zunchi" ? (0.95 + stableUnit(this.id, "zunchi-life") * 0.45) : 0);
    if (type === "grass") {
      this.growth = rand(0.18, 0.42);
      this.health = 1;
      this.seedTimer = rand(18, 38);
      this.eatenAmount = 0;
      this.fertilityBoost = 0;
      this.lifeSpan = rand(420, 860);
      this.wither = 0;
    }
    if (type === "bed") {
      this.comfort = rand(0.86, 1.14);
      this.wear = 0;
    }
    if (type === "ball") {
      this.vx = rand(-5, 5);
      this.vy = rand(-5, 5);
      this.prevX = x;
      this.prevY = y;
      this.spin = rand(0, Math.PI * 2);
      this.spinVelocity = rand(-1.6, 1.6);
      this.lastKickedAt = -999;
      this.lastKickerId = "";
      this.lastPokedAt = -999;
      this.pokeCombo = 0;
      this.lastPokeAngle = rand(0, Math.PI * 2);
    }
    if (type === "zunchi") {
      this.stage = "fresh";
      this.stageTimer = 0;
      this.fertility = 0;
      this.freshness = 1;
      this.zunchiVariant = stableUnit(this.id, "zunchi-variant") < 0.5 ? "zunchi" : "zunchi_02";
    }
    if (type === "firecracker") {
      this.fuseTimer = 5;
      this.fuseMax = 5;
    }
  }
  update(dt, worldRef = world) {
    this.age += dt;
    if (this.dropTimer > 0) {
      const beforeDrop = this.dropTimer;
      this.dropTimer = Math.max(0, this.dropTimer - dt);
      if (beforeDrop > 0 && this.dropTimer <= 0 && !this.dropImpactDone) {
        this.dropImpactDone = true;
        if (worldRef.itemDropImpact) worldRef.itemDropImpact(this);
      }
    }
    if (this.type === "water") this.amount -= dt * 0.9;
    if (["sweet", "love_mochi", "fight_mochi"].includes(this.type)) this.amount -= dt * 0.12;
    if (this.type === "trace") this.amount -= dt * 1.35;
    if (this.type === "splat") this.amount -= dt * 1.05;
    if (this.type === "firecracker") {
      this.fuseTimer = Math.max(0, (this.fuseTimer ?? 5) - dt);
      if (this.fuseTimer <= 0) {
        if (worldRef.explodeFirecracker) worldRef.explodeFirecracker(this);
        else this.amount = 0;
      }
    }
    if (this.type === "ball") this.updateBall(dt, worldRef);
    if (this.type === "grass") {
      this.lifecycleTimer += dt;
      const factor = worldRef.grassUpdateFactor ? worldRef.grassUpdateFactor() : 1;
      const interval = (this.lifecycleInterval || 1.9) * factor;
      if (this.lifecycleTimer >= interval) {
        const lifecycleDt = Math.min(this.lifecycleTimer, 4.8);
        this.lifecycleTimer = 0;
        this.updateGrass(lifecycleDt, worldRef);
      }
    } else if (this.type === "zunchi") {
      this.lifecycleTimer += dt;
      const interval = this.lifecycleInterval || (0.95 + stableUnit(this.id, "zunchi-life") * 0.45);
      if (this.lifecycleTimer >= interval) {
        const lifecycleDt = Math.min(this.lifecycleTimer, 2.4);
        this.lifecycleTimer = 0;
        this.updateZunchi(lifecycleDt, worldRef);
      }
    }
  }
  updateBall(dt, worldRef) {
    this.prevX = this.x;
    this.prevY = this.y;
    const maxSpeed = 1250;
    const clampVelocity = () => {
      const speed = Math.hypot(this.vx || 0, this.vy || 0);
      if (speed > maxSpeed) {
        this.vx = (this.vx || 0) / speed * maxSpeed;
        this.vy = (this.vy || 0) / speed * maxSpeed;
      }
      return Math.hypot(this.vx || 0, this.vy || 0);
    };
    const moving = clampVelocity();
    if (moving > 0.04) {
      this.x += (this.vx || 0) * dt;
      this.y += (this.vy || 0) * dt;
      const p = Math.max(28, CONFIG.worldPadding || 30);
      if (this.x < p) { this.x = p; this.vx = Math.abs(this.vx || 0) * 0.72; this.spinVelocity *= -0.72; }
      if (this.x > worldRef.w - p) { this.x = worldRef.w - p; this.vx = -Math.abs(this.vx || 0) * 0.72; this.spinVelocity *= -0.72; }
      if (this.y < p) { this.y = p; this.vy = Math.abs(this.vy || 0) * 0.72; this.spinVelocity *= -0.72; }
      if (this.y > worldRef.h - p) { this.y = worldRef.h - p; this.vy = -Math.abs(this.vy || 0) * 0.72; this.spinVelocity *= -0.72; }
      this.resolveBallObstacleCollisions(dt, worldRef);
      clampVelocity();
      const groundFriction = Math.pow(0.72, dt);
      this.vx *= groundFriction;
      this.vy *= groundFriction;
    }
    this.spin = (this.spin || 0) + (this.spinVelocity || 0) * dt + (this.vx || 0) * dt / Math.max(8, this.r || 18);
    this.spinVelocity *= Math.pow(0.65, dt);
    if (Math.hypot(this.vx || 0, this.vy || 0) < 0.18) { this.vx = 0; this.vy = 0; }
  }

  resolveBallObstacleCollisions(dt, worldRef) {
    if (!worldRef?.nearbyItems) return;
    const speed = Math.hypot(this.vx || 0, this.vy || 0);
    const searchRadius = Math.max(130, (this.r || 18) + speed * Math.max(dt || 0.016, 0.016) + 96);
    const items = worldRef.nearbyItems(this.x, this.y, searchRadius) || [];
    for (const it of items) {
      if (!it || it === this || it.dead) continue;
      if (it.type === "bed") {
        this.applyBallHayDrag(it, dt, worldRef);
      } else if (it.type === "stone") {
        this.resolveBallCircleBounce(it, (it.r || 20) * 1.08 + (this.r || 18), 0.82, worldRef);
      } else if (it.type === "fence_v" || it.type === "fence_h") {
        this.resolveBallFenceBounce(it, worldRef);
      }
    }
  }

  applyBallHayDrag(bed, dt, worldRef) {
    const rx = Math.max(26, (bed.r || 37) * 1.72 + (this.r || 18) * 0.40);
    const ry = Math.max(18, (bed.r || 37) * 0.92 + (this.r || 18) * 0.34);
    const dx = this.x - bed.x;
    const dy = this.y - bed.y;
    const inside = (dx * dx) / (rx * rx) + (dy * dy) / (ry * ry) <= 1;
    if (!inside) return;
    const slow = Math.pow(0.16, Math.max(0.016, dt || 0.016));
    this.vx *= slow;
    this.vy *= slow;
    this.spinVelocity *= Math.pow(0.24, Math.max(0.016, dt || 0.016));
    if ((this.lastHaySlowLogAt || -999) + 3.5 < (worldRef.time || 0) && Math.hypot(this.vx || 0, this.vy || 0) > 120) {
      this.lastHaySlowLogAt = worldRef.time || 0;
      worldRef.effects?.push(new Effect("ring", this.x, this.y, { size: Math.max(14, this.r * 0.95), life: 0.20, color: "rgba(214,184,96,0.42)" }));
    }
  }

  resolveBallCircleBounce(obstacle, hitRadius, restitution, worldRef) {
    let dx = this.x - obstacle.x;
    let dy = this.y - obstacle.y;
    let d = Math.hypot(dx, dy);
    if (d >= hitRadius) return;
    if (d < 0.001) {
      const speed = Math.hypot(this.vx || 0, this.vy || 0);
      if (speed > 0.001) { dx = -(this.vx || 0) / speed; dy = -(this.vy || 0) / speed; d = 1; }
      else { dx = Math.cos(this.seed || 0); dy = Math.sin(this.seed || 0); d = 1; }
    }
    const nx = dx / d;
    const ny = dy / d;
    const toward = (this.vx || 0) * nx + (this.vy || 0) * ny;
    this.x = obstacle.x + nx * (hitRadius + 0.5);
    this.y = obstacle.y + ny * (hitRadius + 0.5);
    if (toward < 0) {
      this.vx = (this.vx || 0) - (1 + restitution) * toward * nx;
      this.vy = (this.vy || 0) - (1 + restitution) * toward * ny;
    } else {
      this.vx = (this.vx || 0) + nx * 24;
      this.vy = (this.vy || 0) + ny * 24;
    }
    this.vx *= 0.96;
    this.vy *= 0.96;
    this.spinVelocity = clamp((this.spinVelocity || 0) + (nx >= 0 ? -1 : 1) * 5.5, -38, 38);
    this.emitBallBounce(worldRef, obstacle);
  }

  resolveBallFenceBounce(fence, worldRef) {
    const vertical = fence.type === "fence_v";
    const len = Math.max(112, (fence.r || 42) * 3.55);
    const thick = Math.max(10, (fence.r || 42) * 0.31);
    const halfLen = len / 2;
    const sx1 = vertical ? fence.x : fence.x - halfLen;
    const sy1 = vertical ? fence.y - halfLen : fence.y;
    const sx2 = vertical ? fence.x : fence.x + halfLen;
    const sy2 = vertical ? fence.y + halfLen : fence.y;
    const vx = sx2 - sx1;
    const vy = sy2 - sy1;
    const segLenSq = vx * vx + vy * vy || 1;
    const u = clamp(((this.x - sx1) * vx + (this.y - sy1) * vy) / segLenSq, 0, 1);
    const cx = sx1 + vx * u;
    const cy = sy1 + vy * u;
    const hitRadius = (this.r || 18) + thick / 2 + 2;
    let dx = this.x - cx;
    let dy = this.y - cy;
    let d = Math.hypot(dx, dy);
    if (d >= hitRadius) return;
    if (d < 0.001) {
      if (vertical) { dx = (this.vx || 0) >= 0 ? -1 : 1; dy = 0; }
      else { dx = 0; dy = (this.vy || 0) >= 0 ? -1 : 1; }
      d = 1;
    }
    const nx = dx / d;
    const ny = dy / d;
    const toward = (this.vx || 0) * nx + (this.vy || 0) * ny;
    this.x = cx + nx * (hitRadius + 0.5);
    this.y = cy + ny * (hitRadius + 0.5);
    if (toward < 0) {
      this.vx = (this.vx || 0) - 1.78 * toward * nx;
      this.vy = (this.vy || 0) - 1.78 * toward * ny;
    }
    this.vx *= 0.94;
    this.vy *= 0.94;
    this.spinVelocity = clamp((this.spinVelocity || 0) + (nx >= 0 ? -1 : 1) * 6.2, -38, 38);
    this.emitBallBounce(worldRef, fence);
  }

  emitBallBounce(worldRef, obstacle) {
    const now = worldRef?.time || 0;
    if ((this.lastObstacleBounceAt || -999) + 0.08 > now) return;
    this.lastObstacleBounceAt = now;
    worldRef?.effects?.push(new Effect("ring", this.x, this.y, { size: Math.max(13, (this.r || 18) * 0.82), life: 0.18, color: obstacle?.type === "stone" ? "rgba(165,165,150,0.45)" : "rgba(160,116,64,0.42)" }));
  }

  updateGrass(dt, worldRef) {
    const light = worldRef.lightLevel ? worldRef.lightLevel() : 0.7;
    const weather = worldRef.weather || "sunny";
    const grassLoad = worldRef.grassLoadLevel ? worldRef.grassLoadLevel() : 0;
    if (worldRef.grassBlockedAt && worldRef.grassBlockedAt(this.x, this.y, this)) {
      this.growth = Math.max(0, (this.growth ?? 0.25) - dt * 0.28);
      this.amount -= dt * 34;
      return;
    }
    let fertility = 0;
    let fertileSource = null;
    let bestFertility = 0;
    let waterNear = weather === "light_rain" ? 0.35 : 0;
    const nearbyRadius = grassLoad >= 3 ? 190 : grassLoad >= 2 ? 230 : grassLoad >= 1 ? 290 : 360;
    const nearby = worldRef.nearbyItems ? worldRef.nearbyItems(this.x, this.y, nearbyRadius) : (worldRef.items || []);
    let scanned = 0;
    const scanLimit = grassLoad >= 3 ? 18 : grassLoad >= 2 ? 26 : grassLoad >= 1 ? 40 : 9999;
    for (const it of nearby) {
      if (++scanned > scanLimit) break;
      if (it === this) continue;
      const d = distXY(this.x, this.y, it.x, it.y);
      if ((it.type === "trace" || it.type === "splat") && d < 170) {
        const influence = clamp(1 - d / 170, 0, 1) * (it.type === "splat" ? 0.92 : 0.55);
        fertility += influence;
        if (influence > bestFertility) { bestFertility = influence; fertileSource = it; }
      }
      if (it.type === "zunchi" && (it.stage === "decomposing" || it.stage === "fertile_soil")) {
        const influence = clamp(1 - d / nearbyRadius, 0, 1) * (it.stage === "fertile_soil" ? 1.25 : 0.72);
        fertility += influence;
        if (influence > bestFertility) {
          bestFertility = influence;
          fertileSource = it;
        }
      }
      if (it.type === "water") waterNear += clamp(1 - d / 90, 0, 1) * 0.25;
    }
    this.fertilityBoost = clamp(fertility, 0, 1.4);
    const weatherBoost = weather === "sunny" ? 0.09 : weather === "light_rain" ? 0.42 : 0.08;
    const dryStress = weather === "sunny" && light > 0.78 && waterNear < 0.04 && this.fertilityBoost < 0.12 ? 0.012 : 0;
    const growthRate = (0.006 + light * 0.004 + weatherBoost * 0.01 + waterNear * 0.014 + this.fertilityBoost * 0.014) * dt * 0.5;
    this.growth = clamp((this.growth ?? 0.25) + growthRate - dryStress * dt, 0, 0.88);
    this.health = clamp((this.health ?? 1) + dt * (waterNear > 0.05 || weather === "light_rain" ? 0.017 : -0.0015 - dryStress * 0.28), 0.18, 1);
    const grassLimit = worldRef.grassLimit ? worldRef.grassLimit() : (CONFIG.grassLimit ?? 96);
    if (this.growth >= 0.86 && (worldRef.itemCounts?.grass || 0) < grassLimit) {
      const spawned = this.seedAround(worldRef, fertileSource, this.fertilityBoost > 0.25, 2);
      if (spawned > 0) this.growth = rand(0.52, 0.68);
      this.seedTimer = rand(18, 34);
    }
    if (this.age > (this.lifeSpan || 640) * 0.82) {
      const fade = clamp((this.age - (this.lifeSpan || 640) * 0.82) / Math.max((this.lifeSpan || 640) * 0.18, 1), 0, 1);
      this.wither = fade;
      this.health = clamp((this.health ?? 1) - dt * (0.004 + fade * 0.020), 0, 1);
      this.growth = clamp((this.growth ?? 0.25) - dt * fade * 0.005, 0, 0.88);
    } else {
      this.wither = Math.max(0, (this.wither || 0) - dt * 0.08);
    }
    this.amount = clamp(this.growth * 120 * this.health, 0, 130);
    if (this.age > (this.lifeSpan || 640) * 1.05) this.amount -= dt * (1.2 + (this.wither || 0) * 24);
    this.seedTimer -= dt * (this.growth > 0.72 ? 1 : 0.25) * 0.5;
    if (this.seedTimer <= 0 && this.growth > 0.64 && (worldRef.itemCounts?.grass || 0) < grassLimit) {
      this.seedTimer = rand(24, 54);
      if (Math.random() < 0.42 + this.fertilityBoost * 0.18) this.seedAround(worldRef, fertileSource, this.fertilityBoost > 0.25, 1);
    }
  }
  seedAround(worldRef, fertileSource = null, fertile = false, maxNew = 1) {
    let made = 0;
    const limit = worldRef.grassLimit ? worldRef.grassLimit() : (CONFIG.grassLimit ?? 96);
    for (let n = 0; n < maxNew && (worldRef.itemCounts?.grass || 0) < limit; n++) {
      const source = fertile && fertileSource ? fertileSource : this;
      const spot = worldRef.findGrassSproutSpot
        ? worldRef.findGrassSproutSpot(source, Boolean(fertile && fertileSource))
        : { x: clamp(this.x + rand(-58, 58), 44, worldRef.w - 44), y: clamp(this.y + rand(-42, 42), 44, worldRef.h - 44) };
      if (!spot) break;
      const sprout = new Item("grass", spot.x, spot.y);
      sprout.growth = rand(0.08, 0.18);
      sprout.amount = sprout.growth * 120;
      worldRef.items.push(sprout);
      if (worldRef.itemCounts) worldRef.itemCounts.grass = (worldRef.itemCounts.grass || 0) + 1;
      made += 1;
    }
    return made;
  }

  updateZunchi(dt, worldRef) {
    const rainy = worldRef.weather === "light_rain";
    const rainBoost = rainy ? 1.95 : 1;
    const decayBoost = rainy ? 2.15 : 1;
    let waterBoost = 0;
    const nearby = worldRef.nearbyItems ? worldRef.nearbyItems(this.x, this.y, 84) : (worldRef.items || []);
    for (const it of nearby) {
      if (it.type !== "water") continue;
      waterBoost += clamp(1 - distXY(this.x, this.y, it.x, it.y) / 80, 0, 1);
    }
    this.stageTimer += dt * 2.0 * (rainBoost + waterBoost * 1.3);
    if (this.stage === "fresh") {
      this.freshness = clamp(1 - this.stageTimer / 110, 0, 1);
      this.amount -= dt * 0.05 * decayBoost;
      if (this.stageTimer > 110) { this.stage = "dry"; this.stageTimer = 0; }
    } else if (this.stage === "dry") {
      this.freshness = clamp(0.55 - this.stageTimer / 220, 0.20, 0.55);
      this.amount -= dt * 0.09 * decayBoost;
      if (this.stageTimer > 150) { this.stage = "decomposing"; this.stageTimer = 0; this.fertility = 0.35; }
    } else if (this.stage === "decomposing") {
      this.fertility = clamp(this.fertility + dt * 0.015, 0, 1);
      this.amount -= dt * 0.12 * decayBoost;
      if (this.stageTimer > 190) { this.stage = "fertile_soil"; this.stageTimer = 0; this.amount = Math.min(this.amount, 140); }
    } else if (this.stage === "fertile_soil") {
      this.fertility = clamp(1 - this.stageTimer / 360, 0, 1);
      this.amount -= dt * 0.26 * decayBoost;
    }
  }
  get dead() {
    return this.amount <= 0;
  }
  serialize() {
    return {
      type: this.type, x: this.x, y: this.y, amount: this.amount, age: this.age, seed: this.seed,
      stage: this.stage, stageTimer: this.stageTimer, fertility: this.fertility, freshness: this.freshness,
      growth: this.growth, health: this.health, seedTimer: this.seedTimer, eatenAmount: this.eatenAmount, fertilityBoost: this.fertilityBoost, lifeSpan: this.lifeSpan, wither: this.wither,
      comfort: this.comfort, wear: this.wear, crawlOpen: this.crawlOpen, zunchiVariant: this.zunchiVariant, toolSize: this.toolSize, blastScale: this.blastScale, fuseTimer: this.fuseTimer, fuseMax: this.fuseMax, dropTimer: this.dropTimer, dropMax: this.dropMax,
      vx: this.vx, vy: this.vy, prevX: this.prevX, prevY: this.prevY,
      spin: this.spin, spinVelocity: this.spinVelocity, lastKickedAt: this.lastKickedAt, lastKickerId: this.lastKickerId,
      lastPokedAt: this.lastPokedAt, pokeCombo: this.pokeCombo, lastPokeAngle: this.lastPokeAngle
    };
  }
  static from(o) {
    const type = o?.type || "grass";
    const it = Object.create(Item.prototype);
    Item._loadId = (Item._loadId || 0) + 1;
    it.id = o.id || `loaded-${Item._loadId}`;
    it.type = type;
    it.x = o.x;
    it.y = o.y;
    it.r = {
      food: 14, sweet: 13, love_mochi: 13, fight_mochi: 13, water: 12, grass: 17, stone: 20, bed: 37, ball: 18, firecracker: 15, fence_v: 42, fence_h: 42, trace: 16, splat: 26, zunchi: 14
    }[type] || 12;
    it.amount = o.amount ?? ({
      food: 85, sweet: 62, love_mochi: 62, fight_mochi: 62, water: 64, grass: 120, stone: 999, bed: 999, ball: 999, firecracker: 999, fence_v: 999, fence_h: 999, trace: 220, splat: 260, zunchi: 240
    }[type] || 80);
    it.age = o.age || 0;
    it.seed = o.seed || Math.random() * 1000;
    it.dropTimer = 0;
    it.dropMax = 0;
    it.dropImpactDone = false;
    it.lifecycleTimer = o.lifecycleTimer ?? rand(0, type === "grass" ? 1.15 : 0.55);
    it.lifecycleInterval = o.lifecycleInterval ?? (type === "grass" ? (1.75 + stableUnit(it.id, "grass-life") * 0.90) : (type === "zunchi" ? (0.95 + stableUnit(it.id, "zunchi-life") * 0.45) : 0));
    if (type === "grass") {
      it.growth = 0.25;
      it.health = 1;
      it.seedTimer = rand(18, 38);
      it.eatenAmount = 0;
      it.fertilityBoost = 0;
    }
    if (type === "bed") {
      it.comfort = 1;
      it.wear = 0;
    }
    if (type === "ball") {
      it.vx = o.vx || 0;
      it.vy = o.vy || 0;
      it.prevX = o.prevX ?? o.x;
      it.prevY = o.prevY ?? o.y;
      it.spin = o.spin || 0;
      it.spinVelocity = o.spinVelocity || 0;
      it.lastKickedAt = o.lastKickedAt ?? -999;
      it.lastKickerId = o.lastKickerId || "";
      it.lastPokedAt = o.lastPokedAt ?? -999;
      it.pokeCombo = o.pokeCombo || 0;
      it.lastPokeAngle = o.lastPokeAngle || rand(0, Math.PI * 2);
    }
    if (type === "zunchi") {
      it.stage = "fresh";
      it.stageTimer = 0;
      it.fertility = 0;
      it.freshness = 1;
      it.zunchiVariant = "zunchi";
    }
    if (type === "firecracker") {
      it.fuseTimer = 5;
      it.fuseMax = 5;
    }
    it.stage = o.stage || it.stage;
    it.stageTimer = o.stageTimer || 0;
    it.fertility = o.fertility || 0;
    it.freshness = o.freshness ?? it.freshness;
    it.growth = o.growth ?? it.growth;
    it.health = o.health ?? it.health;
    it.seedTimer = o.seedTimer ?? it.seedTimer;
    it.eatenAmount = o.eatenAmount || 0;
    it.fertilityBoost = o.fertilityBoost || 0;
    it.lifeSpan = o.lifeSpan ?? it.lifeSpan;
    it.wither = o.wither ?? it.wither ?? 0;
    it.comfort = o.comfort ?? it.comfort;
    it.wear = o.wear ?? it.wear;
    it.crawlOpen = o.crawlOpen ?? it.crawlOpen;
    it.vx = o.vx ?? it.vx ?? 0;
    it.vy = o.vy ?? it.vy ?? 0;
    it.prevX = o.prevX ?? it.prevX ?? it.x;
    it.prevY = o.prevY ?? it.prevY ?? it.y;
    it.spin = o.spin ?? it.spin ?? 0;
    it.spinVelocity = o.spinVelocity ?? it.spinVelocity ?? 0;
    it.lastKickedAt = o.lastKickedAt ?? it.lastKickedAt ?? -999;
    it.lastKickerId = o.lastKickerId || it.lastKickerId || "";
    it.lastPokedAt = o.lastPokedAt ?? it.lastPokedAt ?? -999;
    it.pokeCombo = o.pokeCombo ?? it.pokeCombo ?? 0;
    it.lastPokeAngle = o.lastPokeAngle ?? it.lastPokeAngle ?? rand(0, Math.PI * 2);
    it.zunchiVariant = o.zunchiVariant || it.zunchiVariant || "zunchi";
    it.toolSize = o.toolSize || it.toolSize || "medium";
    it.blastScale = o.blastScale || it.blastScale || 1;
    it.fuseTimer = o.fuseTimer ?? it.fuseTimer;
    it.fuseMax = o.fuseMax ?? it.fuseMax;
    it.dropTimer = 0;
    it.dropMax = 0;
    it.dropImpactDone = true;
    return it;
  }
  draw(ctx, t, lighting = null) {
    const lightState = lighting || getLightingState(world);
    const night = clamp(lightState.nightStrength * 1.35, 0, 1);
    const warm = lightState.warmth;
    const styleNight = lightState.light < 0.42;
    const styleWarm = !styleNight && (lightState.goldenStrength > 0.22 || warm > 0.55);
    const visibleAlpha = clamp(this.amount / 40, 0.24, 1);
    const dropT = this.dropMax > 0 ? clamp(this.dropTimer / this.dropMax, 0, 1) : 0;
    const dropY = dropT > 0 ? -170 * Math.pow(dropT, 0.42) : 0;
    const shadow = projectedShadowParams(lightState, Math.max(0.4, this.r / 18));
    if (this.type !== "trace" && this.type !== "splat") {
      const zunchiId = this.type === "zunchi" ? (this.zunchiVariant || "zunchi") : null;
      const zunchiImg = zunchiId ? (images.get(zunchiId) || images.get("zunchi")) : null;
      if (zunchiImg) {
        const metrics = getImageMetrics(zunchiId || "zunchi") || getImageMetrics("zunchi");
        const ratio = metrics?.ratio || 178 / 236;
        const zunchiH = this.r * 1.66 * ratio;
        drawImageProjectedShadow(ctx, zunchiImg, this.x, this.y + imageVisibleBottomFromTop(zunchiImg, -this.r * 1.35, zunchiH), this.r * 2.2, zunchiH, shadow, {
          alpha: shadow.alpha * visibleAlpha * 1.18,
          widthScale: 0.92,
          heightScale: 0.92,
        });
      } else if (this.type === "grass") {
        ctx.save();
        ctx.globalAlpha = clamp(shadow.alpha * visibleAlpha * 0.62, 0.035, 0.13);
        ctx.fillStyle = shadow.color;
        ctx.beginPath();
        ctx.ellipse(this.x, this.y + this.r * 0.46, this.r * 0.62, this.r * 0.12, 0, 0, Math.PI * 2);
        ctx.fill();
        ctx.restore();
      } else {
        drawProjectedShadow(ctx, this.x, this.y + this.r * 0.52, this.r * 0.82, this.r * 0.26, { ...shadow, alpha: shadow.alpha * visibleAlpha * 1.25 });
      }
    }
    drawItemGlow(ctx, this, lightState, visibleAlpha);
    if (world.pointer?.inside && this.type !== "trace" && this.type !== "splat" && distXY(this.x, this.y, world.pointer.x, world.pointer.y) < this.r * 2.2) {
      ctx.save();
      ctx.globalAlpha = 0.32;
      ctx.strokeStyle = "rgba(255, 250, 220, 0.82)";
      ctx.lineWidth = 1.4;
      ctx.beginPath();
      ctx.ellipse(this.x, this.y + this.r * 0.1, this.r * 1.35, this.r * 0.92, 0, 0, Math.PI * 2);
      ctx.stroke();
      ctx.restore();
    }
    ctx.save();
    ctx.translate(this.x, this.y + dropY);
    ctx.globalAlpha = visibleAlpha;
    if (this.type === "food" || this.type === "sweet" || this.type === "love_mochi" || this.type === "fight_mochi") {
      const sweet = this.type === "sweet";
      const loveMochi = this.type === "love_mochi";
      const fightMochi = this.type === "fight_mochi";
      ctx.fillStyle = loveMochi ? "#fff1f6" : (fightMochi ? "#fff3ec" : (sweet ? "#fffaf1" : "#f1dfb7"));
      ctx.strokeStyle = loveMochi ? "#bf6f8b" : (fightMochi ? "#bc6d42" : (sweet ? "#9a8a72" : "#8d6f48"));
      ctx.lineWidth = 2;
      ctx.beginPath();
      const bob = 0;
      ctx.ellipse(0, bob, this.r * 1.25, this.r * 0.75, Math.sin(this.seed) * 0.4, 0, Math.PI * 2);
      ctx.fill(); ctx.stroke();
      if (sweet) {
        ctx.beginPath();
        ctx.fillStyle = "#76b94d";
        ctx.ellipse(-1, -this.r * 0.24, this.r * 0.76, this.r * 0.26, Math.sin(this.seed) * 0.25, 0, Math.PI * 2);
        ctx.fill();
        ctx.fillStyle = "rgba(255,255,255,0.62)";
        ctx.beginPath();
        ctx.ellipse(-this.r * 0.32, -this.r * 0.16, this.r * 0.24, this.r * 0.10, -0.35, 0, Math.PI * 2);
        ctx.fill();
      } else if (loveMochi) {
        ctx.fillStyle = "#ff6a9c";
        ctx.font = `${Math.round((this.r || 13) * 1.15)}px sans-serif`;
        ctx.textAlign = "center";
        ctx.textBaseline = "middle";
        ctx.fillText("❤", 0, 1);
        ctx.fillStyle = "rgba(255,255,255,0.55)";
        ctx.beginPath();
        ctx.ellipse(-this.r * 0.28, -this.r * 0.18, this.r * 0.23, this.r * 0.10, -0.35, 0, Math.PI * 2);
        ctx.fill();
      } else if (fightMochi) {
        ctx.fillStyle = "#d55632";
        ctx.font = `${Math.round((this.r || 13) * 1.02)}px sans-serif`;
        ctx.textAlign = "center";
        ctx.textBaseline = "middle";
        ctx.fillText("✦", 0, 1);
        ctx.strokeStyle = "rgba(168,76,42,0.72)";
        ctx.lineWidth = 1.4;
        ctx.beginPath();
        ctx.moveTo(-this.r * 0.44, -this.r * 0.42);
        ctx.lineTo(this.r * 0.44, this.r * 0.42);
        ctx.moveTo(-this.r * 0.44, this.r * 0.42);
        ctx.lineTo(this.r * 0.44, -this.r * 0.42);
        ctx.stroke();
      } else {
        ctx.fillStyle = "#fff7dc";
        for (let i = 0; i < 5; i++) {
          ctx.beginPath();
          ctx.arc(randSeed(this.seed + i, -8, 8), randSeed(this.seed + i + 7, -5, 5), 1.6, 0, Math.PI * 2);
          ctx.fill();
        }
      }
    } else if (this.type === "water") {
      ctx.fillStyle = "rgba(86, 157, 224, 0.50)";
      ctx.strokeStyle = "rgba(62, 113, 178, 0.42)";
      ctx.lineWidth = 2;
      ctx.beginPath();
      ctx.ellipse(0, Math.sin(t * 1.7 + this.seed) * 1.5, this.r * 1.05, this.r * 0.8, 0, 0, Math.PI * 2);
      ctx.fill(); ctx.stroke();
      ctx.fillStyle = "rgba(255,255,255,0.55)";
      ctx.beginPath(); ctx.arc(-4, -4, 3, 0, Math.PI * 2); ctx.fill();
    } else if (this.type === "grass") {
      const growth = this.growth ?? clamp(this.amount / 120, 0, 1);
      const stage = growth < 0.22 ? "sprout" : growth < 0.48 ? "young" : "mature";
      const eaten = this.eatenAmount > 14 || growth < 0.16;
      const grassLoad = 1;
      const wither = clamp(this.wither || 0, 0, 1);
      ctx.strokeStyle = eaten ? "#7b8755" : (wither > 0.08 ? `rgba(${Math.round(106 + wither * 40)}, ${Math.round(132 - wither * 32)}, ${Math.round(70 - wither * 18)}, 1)` : (styleNight ? "#294b40" : (styleWarm ? "#64ad3f" : "#4f8438")));
      ctx.shadowColor = "transparent";
      ctx.shadowBlur = 0;
      ctx.lineCap = "round";
      ctx.lineWidth = grassLoad >= 2 ? (styleNight ? 1.3 : 1.5) : (styleNight ? 1.7 : 2);
      const matureBlades = grassLoad >= 3 ? 2 : grassLoad >= 2 ? 3 : grassLoad >= 1 ? 5 : 7;
      const bladeCount = eaten ? 2 : (stage === "sprout" ? 2 : stage === "young" ? (grassLoad >= 2 ? 2 : 3) : matureBlades);
      for (let i = 0; i < bladeCount; i++) {
        const spread = stage === "mature" ? (grassLoad >= 2 ? 0.92 : 1.18) : 0.70;
        const a = -Math.PI / 2 + randSeed(this.seed + i, -spread, spread);
        const len = this.r * randSeed(this.seed + i + 10, 0.45, stage === "mature" ? (grassLoad >= 2 ? 1.08 : 1.30) : 1.05) * clamp(growth, 0.18, 1.00) * (eaten ? 0.42 : 1);
        const rootX = stage === "mature" ? randSeed(this.seed + i + 31, -this.r * (grassLoad >= 2 ? 0.24 : 0.32), this.r * (grassLoad >= 2 ? 0.24 : 0.32)) : 0;
        ctx.beginPath();
        ctx.moveTo(rootX, 8);
        ctx.quadraticCurveTo(rootX + Math.cos(a) * len * 0.55, 8 - len * 0.24, rootX + Math.cos(a) * len, Math.sin(a) * len * 0.78);
        ctx.stroke();
      }
      if (stage === "mature" && !eaten && grassLoad <= 1) {
        ctx.save();
        ctx.globalAlpha = 0.16;
        ctx.fillStyle = styleNight ? "rgba(95,132,114,0.65)" : "rgba(138,189,108,0.72)";
        ctx.beginPath();
        ctx.ellipse(0, 1, this.r * 0.72, this.r * 0.22, 0, 0, Math.PI * 2);
        ctx.fill();
        ctx.restore();
      }
    } else if (this.type === "stone") {
      ctx.fillStyle = styleNight ? "#8f94a6" : (styleWarm ? "#e4d6b5" : "#d9d0b8");
      ctx.strokeStyle = styleNight ? "#5f6478" : "#8a7c63";
      ctx.shadowColor = "transparent";
      ctx.shadowBlur = 0;
      ctx.lineWidth = 2;
      roundedBlob(ctx, 0, 0, this.r * 1.25, this.r * 0.85, 8);
      ctx.fill(); ctx.stroke();
      ctx.fillStyle = "rgba(255,255,255,0.34)";
      ctx.beginPath(); ctx.ellipse(-6, -5, 6, 3, -0.3, 0, Math.PI * 2); ctx.fill();
    } else if (this.type === "bed") {
      ctx.fillStyle = styleWarm ? "rgba(224, 190, 94, 0.90)" : (styleNight ? "rgba(177, 156, 95, 0.84)" : "rgba(205, 169, 86, 0.88)" );
      ctx.strokeStyle = styleWarm ? "rgba(135, 101, 45, 0.62)" : (styleNight ? "rgba(102, 88, 56, 0.68)" : "rgba(117, 91, 47, 0.68)" );
      ctx.lineWidth = 2.2;
      ctx.beginPath();
      ctx.ellipse(0, 3, this.r * 1.45, this.r * 0.72, -0.08, 0, Math.PI * 2);
      ctx.fill();
      ctx.stroke();
      ctx.strokeStyle = "rgba(116, 89, 42, 0.45)";
      ctx.lineWidth = 1.5;
      for (let i = 0; i < 13; i++) {
        const x = randSeed(this.seed + i, -this.r * 1.10, this.r * 1.08);
        const y = randSeed(this.seed + i + 20, -this.r * 0.36, this.r * 0.46);
        const len = randSeed(this.seed + i + 40, this.r * 0.34, this.r * 0.70);
        const a = randSeed(this.seed + i + 60, -0.75, 0.75);
        ctx.beginPath();
        ctx.moveTo(x - Math.cos(a) * len * 0.5, y - Math.sin(a) * len * 0.5);
        ctx.lineTo(x + Math.cos(a) * len * 0.5, y + Math.sin(a) * len * 0.5);
        ctx.stroke();
      }
    } else if (this.type === "ball") {
      const speed = Math.hypot(this.vx || 0, this.vy || 0);
      const moving = clamp(speed / 260, 0, 1);
      ctx.save();
      ctx.rotate(this.spin || 0);
      ctx.shadowColor = styleNight ? "rgba(0,0,0,0.34)" : "rgba(52,40,26,0.18)";
      ctx.shadowBlur = 2 + moving * 3;
      ctx.shadowOffsetY = 2;
      ctx.font = `${Math.round((this.r || 18) * 2.0)}px "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif`;
      ctx.textAlign = "center";
      ctx.textBaseline = "middle";
      ctx.fillText("⚽", 0, 1);
      if (moving > 0.55) {
        ctx.globalAlpha = 0.14 + moving * 0.10;
        ctx.shadowColor = "transparent";
        ctx.fillStyle = "#ffffff";
        ctx.beginPath();
        ctx.ellipse(-this.r * 0.35, -this.r * 0.42, this.r * 0.25, this.r * 0.12, -0.45, 0, Math.PI * 2);
        ctx.fill();
      }
      ctx.restore();
    } else if (this.type === "firecracker") {
      const fuse = clamp((this.fuseTimer ?? 5) / Math.max(this.fuseMax || 5, 0.1), 0, 1);
      const flash = fuse < 0.35 ? (0.5 + Math.sin(t * 20 + this.seed) * 0.5) : 0;
      ctx.rotate(-0.22 + Math.sin(this.seed) * 0.12);
      ctx.fillStyle = flash > 0.65 ? "#ffed77" : "#d94b43";
      ctx.strokeStyle = "rgba(96,48,34,0.78)";
      ctx.lineWidth = 2;
      roundedRect(ctx, -this.r * 0.72, -this.r * 0.86, this.r * 1.44, this.r * 1.72, 5);
      ctx.fill();
      ctx.stroke();
      ctx.fillStyle = "#f4d15b";
      ctx.fillRect(-this.r * 0.55, -this.r * 0.54, this.r * 1.1, this.r * 0.20);
      ctx.fillRect(-this.r * 0.55, this.r * 0.34, this.r * 1.1, this.r * 0.20);
      ctx.strokeStyle = "rgba(74,55,39,0.82)";
      ctx.lineWidth = 2.2;
      ctx.beginPath();
      ctx.moveTo(0, -this.r * 0.88);
      ctx.quadraticCurveTo(this.r * 0.32, -this.r * 1.34, this.r * 0.92, -this.r * 1.42);
      ctx.stroke();
      ctx.fillStyle = flash > 0.1 ? "rgba(255,221,82,0.92)" : "rgba(255,162,62,0.78)";
      ctx.beginPath();
      ctx.arc(this.r * 0.98, -this.r * 1.42, 2.5 + flash * 2.2, 0, Math.PI * 2);
      ctx.fill();
      ctx.fillStyle = "rgba(42,36,29,0.66)";
      ctx.font = "bold 10px ui-rounded, sans-serif";
      ctx.textAlign = "center";
      ctx.fillText(String(Math.ceil(this.fuseTimer ?? 5)), 0, this.r * 1.42);
    } else if (this.type === "fence_v" || this.type === "fence_h") {
      const vertical = this.type === "fence_v";
      const len = Math.max(112, this.r * 3.55);
      const thick = Math.max(10, this.r * 0.31);
      ctx.save();
      ctx.rotate(vertical ? 0 : Math.PI / 2);
      const wood = styleNight ? "#7a5b3c" : (styleWarm ? "#a96f35" : "#965f31");
      const edge = styleNight ? "#4d3d2f" : "#5f3f25";
      const hi = styleNight ? "rgba(198,166,116,0.20)" : "rgba(232,176,94,0.32)";
      ctx.fillStyle = wood;
      ctx.strokeStyle = edge;
      ctx.lineWidth = 2.4;
      ctx.beginPath();
      roundedRect(ctx, -thick / 2, -len / 2, thick, len, thick / 2);
      ctx.fill();
      ctx.stroke();
      ctx.fillStyle = hi;
      ctx.beginPath();
      roundedRect(ctx, -thick * 0.26, -len / 2 + 6, thick * 0.20, len - 12, thick / 3);
      ctx.fill();
      ctx.restore();
    } else if (this.type === "zunchi") {
      const zunchiId = this.zunchiVariant || "zunchi";
      const img = images.get(zunchiId) || images.get("zunchi");
      if (img) {
        const metrics = getImageMetrics(zunchiId) || getImageMetrics("zunchi");
        const ratio = metrics?.ratio || 178 / 236;
        const stageAlpha = this.stage === "fresh" ? clamp(this.freshness ?? 1, 0.45, 1) : this.stage === "dry" ? 0.82 : this.stage === "decomposing" ? 0.62 : clamp(this.fertility ?? 0.28, 0.24, 0.46);
        ctx.globalAlpha *= stageAlpha;
        ctx.drawImage(img, -this.r * 1.1, -this.r * 1.35, this.r * 2.2, this.r * 1.66 * ratio);
      }
    } else if (this.type === "trace") {
      ctx.fillStyle = "rgba(122, 100, 76, 0.12)";
      ctx.strokeStyle = "rgba(122, 100, 76, 0.16)";
      ctx.lineWidth = 1.5;
      ctx.beginPath();
      ctx.ellipse(0, 0, this.r * 1.3, this.r * 0.75, Math.sin(this.seed) * 0.7, 0, Math.PI * 2);
      ctx.fill(); ctx.stroke();
    } else if (this.type === "splat") {
      const fade = clamp(this.amount / 260, 0, 1);
      ctx.globalAlpha = visibleAlpha * fade;
      ctx.fillStyle = `rgba(123, 214, 52, ${0.34 * fade})`;
      ctx.strokeStyle = `rgba(85, 160, 38, ${0.22 * fade})`;
      ctx.lineWidth = 1.8;
      const blobs = [
        [-12, -2, 10, 8], [0, 0, 16, 10], [13, 5, 10, 8], [-2, -12, 9, 7], [7, -8, 7, 5], [-18, 8, 6, 5]
      ];
      for (const [bx, by, bw, bh] of blobs) {
        ctx.beginPath();
        ctx.ellipse(bx, by, bw, bh, randSeed(this.seed + bx * 0.1, -0.5, 0.5), 0, Math.PI * 2);
        ctx.fill();
        ctx.stroke();
      }
      for (let i = 0; i < 7; i++) {
        ctx.beginPath();
        ctx.arc(randSeed(this.seed + i, -28, 24), randSeed(this.seed + i + 9, -18, 18), randSeed(this.seed + i + 19, 2.5, 4.8), 0, Math.PI * 2);
        ctx.fill();
      }
    }
    ctx.restore();
  }
}