"use strict";

// Layer: simulation/system-effects
// Owns frame updates for transient visual/effect entities.
(function (global) {
  function updateEffect(effect, dt, frameId = 0, runScale = 1) {
    if (!effect || effect.dead) return false;
    const runDt = Math.min(0.24, Math.max(0, dt * Math.max(1, Number(runScale) || 1)));
    effect._effectUpdatedFrame = frameId;
    effect.update(runDt);
    return true;
  }

  function updateEffects(worldRef, dt) {
    const effects = worldRef.effects || [];
    const total = effects.length;
    const frameId = (worldRef._effectUpdateFrameId || 0) + 1;
    worldRef._effectUpdateFrameId = frameId;
    if (total <= 56) {
      for (const ef of effects) updateEffect(ef, dt, frameId, 1);
      worldRef._effectUpdateStats = { total, updated: total, skipped: 0, batched: false };
      return;
    }
    const budget = Math.max(40, Math.ceil(total * 0.42));
    const runScale = Math.min(3.0, Math.max(1, total / Math.max(1, budget)));
    let cursor = Math.max(0, Math.floor(worldRef._effectUpdateCursor || 0)) % total;
    let updated = 0;
    let scanned = 0;
    while (updated < budget && scanned < total) {
      const ef = effects[cursor];
      cursor = (cursor + 1) % total;
      scanned += 1;
      if (!ef || ef.dead) continue;
      updateEffect(ef, dt, frameId, runScale);
      updated += 1;
    }
    worldRef._effectUpdateCursor = cursor;
    worldRef._effectUpdateStats = { total, updated, skipped: Math.max(0, total - updated), batched: true };
  }

  global.TarinaiEffectsSimulationSystem = Object.freeze({
    phases: Object.freeze({ updateEffects }),
  });
})(typeof window !== "undefined" ? window : globalThis);