using System.Collections.Generic;
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using Spine.Unity;
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using UnityEngine;
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/// <summary>
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/// Spine批量更新管理器（参考UWA优化方案）
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/// 禁用SkeletonGraphic的Update/LateUpdate自动回调，
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/// 由Manager统一批量调用，减少大量Spine对象的跨语言调用开销。
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/// 支持隔帧更新Mesh，进一步降低CPU开销。
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/// </summary>
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public class SpineUpdateManager : MonoBehaviour
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{
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private static SpineUpdateManager instance;
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public static SpineUpdateManager Instance
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{
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get
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{
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if (instance == null)
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{
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var go = new GameObject("[SpineUpdateManager]");
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DontDestroyOnLoad(go);
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instance = go.AddComponent<SpineUpdateManager>();
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}
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return instance;
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}
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}
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private readonly List<SkeletonGraphic> managedSpines = new List<SkeletonGraphic>();
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private readonly HashSet<SkeletonGraphic> managedSet = new HashSet<SkeletonGraphic>();
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private int frameCount;
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/// <summary>
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/// 注册一个SkeletonGraphic到批量更新管理器。
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/// 注册后会禁用其自身的Update/LateUpdate（通过设置freeze=true），
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/// 改由Manager统一驱动。
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/// </summary>
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public void Register(SkeletonGraphic sg)
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{
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if (sg == null || managedSet.Contains(sg)) return;
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managedSpines.Add(sg);
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managedSet.Add(sg);
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sg.freeze = true; // 禁用SkeletonGraphic自身的Update/LateUpdate
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}
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/// <summary>
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/// 从管理器中移除一个SkeletonGraphic，恢复其自身更新。
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/// </summary>
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public void Unregister(SkeletonGraphic sg)
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{
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if (sg == null || !managedSet.Contains(sg)) return;
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managedSpines.Remove(sg);
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managedSet.Remove(sg);
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sg.freeze = false; // 恢复自身更新
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}
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void Update()
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{
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frameCount++;
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float dt = Time.deltaTime;
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for (int i = managedSpines.Count - 1; i >= 0; i--)
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{
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var sg = managedSpines[i];
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if (sg == null)
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{
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managedSpines.RemoveAt(i);
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managedSet.Remove(sg);
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continue;
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}
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if (!sg.isActiveAndEnabled) continue;
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sg.Update(dt);
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}
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}
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void LateUpdate()
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{
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bool skipMesh = managedSpines.Count > 8 && (frameCount & 1) == 0;
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for (int i = managedSpines.Count - 1; i >= 0; i--)
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{
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var sg = managedSpines[i];
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if (sg == null)
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{
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managedSpines.RemoveAt(i);
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managedSet.Remove(sg);
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continue;
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}
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if (!sg.isActiveAndEnabled) continue;
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if (skipMesh) continue;
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sg.UpdateMesh();
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}
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}
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void OnDestroy()
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{
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// 恢复所有被管理的Spine自身更新
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foreach (var sg in managedSpines)
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{
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if (sg != null)
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sg.freeze = false;
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}
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managedSpines.Clear();
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managedSet.Clear();
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instance = null;
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}
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}
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