"use strict";

// Layer: entity-runtime/items/growth-system
// Owns zunchi lifecycle stage ticking. Grass growth is handled by
// simulation_item_ant_system.js via sparse random stage advances.
(function (global) {
  function updateZunchiLifecycle(item, dt, worldRef) {
    if (!item || item.dead || item.type !== "zunchi") return false;
    item.lifecycleTimer += dt;
    const interval = item.lifecycleInterval || (0.95 + stableUnit(item.id, "zunchi-life") * 0.45);
    if (item.lifecycleTimer < interval) return false;
    const groundId = worldRef?.groundType || "soil";
    const groundDecayMul = Number(global.TarinaiGround?.zunchiDecayMultiplier?.(groundId) || 1) || 1;
    const maxLifecycleDt = groundDecayMul >= 100 ? 0.35 : 2.4;
    const lifecycleDt = Math.min(item.lifecycleTimer, maxLifecycleDt);
    item.lifecycleTimer = Math.max(0, item.lifecycleTimer - lifecycleDt);
    global.TarinaiItemDynamicZunchiSystem.updateLifecycle(item, lifecycleDt, worldRef);
    return true;
  }

  function update(item, dt, worldRef) {
    if (!item || item.dead) return { done: true };
    if (item.type === "zunchi") updateZunchiLifecycle(item, dt, worldRef);
    return { done: false };
  }

  global.TarinaiItemGrowthSystem = Object.freeze({ update });
})(typeof window !== "undefined" ? window : globalThis);