103 lines
3.6 KiB
C#
103 lines
3.6 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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namespace BaseGames.UI
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{
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/// <summary>
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/// 全局伤害飘字 Tick 系统（架构 10_UIModule §10 优化）。
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///
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/// 设计动机：原实现中每条飘字独立 StartCoroutine（FloatAndFade），
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/// Boss 战或大范围 AOE 时同时存在数十条会产生大量协程对象与调度开销。
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/// 本系统用单一 Update + 紧凑 List<Entry> 集中推进，
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/// 所有飘字共享同一份每帧调度（仅一次 Update 调用），并消除协程对象。
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///
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/// 使用：FloatingDamageText.Show 不再 StartCoroutine，而是调用
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/// FloatingDamageTickSystem.Register(this, ...)；系统自动在动画结束时
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/// 调用 OnComplete 回调（飘字 SetActive(false) 回池）。
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/// </summary>
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[DefaultExecutionOrder(+100)]
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public class FloatingDamageTickSystem : MonoBehaviour
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{
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private struct Entry
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{
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public FloatingDamageText Target;
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public Vector2 StartWorld;
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public float Elapsed;
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public float Duration;
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public float FloatDistance;
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public float StartAlpha;
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}
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private static FloatingDamageTickSystem s_instance;
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private readonly List<Entry> _entries = new(64);
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public static FloatingDamageTickSystem Instance
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{
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get
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{
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if (s_instance != null) return s_instance;
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var go = new GameObject(nameof(FloatingDamageTickSystem));
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DontDestroyOnLoad(go);
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s_instance = go.AddComponent<FloatingDamageTickSystem>();
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return s_instance;
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}
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}
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private void Awake()
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{
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if (s_instance != null && s_instance != this) { Destroy(this); return; }
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s_instance = this;
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}
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public void Register(FloatingDamageText target, Vector2 startWorld,
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float duration, float floatDistance, float startAlpha)
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{
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if (target == null || duration <= 0f) return;
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_entries.Add(new Entry
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{
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Target = target,
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StartWorld = startWorld,
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Elapsed = 0f,
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Duration = duration,
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FloatDistance = floatDistance,
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StartAlpha = startAlpha
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});
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}
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/// <summary>取消指定目标的飘字动画（例如对象池回收）。</summary>
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public void Unregister(FloatingDamageText target)
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{
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for (int i = _entries.Count - 1; i >= 0; i--)
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if (_entries[i].Target == target) _entries.RemoveAt(i);
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}
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private void Update()
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{
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float dt = Time.deltaTime;
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// 倒序遍历，便于安全 RemoveAt
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for (int i = _entries.Count - 1; i >= 0; i--)
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{
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var e = _entries[i];
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if (e.Target == null) { _entries.RemoveAt(i); continue; }
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e.Elapsed += dt;
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float t = e.Elapsed / e.Duration;
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bool done = t >= 1f;
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if (done) t = 1f;
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e.Target.TickAnimation(e.StartWorld, t, e.StartAlpha, e.FloatDistance);
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if (done)
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{
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e.Target.OnTickComplete();
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_entries.RemoveAt(i);
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}
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else
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{
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_entries[i] = e;
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}
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}
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}
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}
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}
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