115 lines
4.5 KiB
C#
115 lines
4.5 KiB
C#
using System;
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using System.Collections;
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using UnityEngine;
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using UnityEngine.Rendering.Universal;
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using BaseGames.Core.Events;
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namespace BaseGames.VFX
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{
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/// <summary>
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/// 区域进出时平滑切换 Global Light 2D 颜色和强度。
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/// 挂在 Persistent 场景 [Lighting] GameObject 上，监听 OnRegionEntered 事件频道。
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/// </summary>
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public class RegionLightController : MonoBehaviour
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{
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[SerializeField] private Light2D _globalLight;
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[SerializeField] private RegionLightCatalogSO _catalog;
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[SerializeField] private StringEventChannelSO _onRegionEntered;
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[SerializeField] private float _transitionDuration = 1.5f;
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private Coroutine _colorCoroutine;
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private Coroutine _intensityCoroutine;
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private readonly CompositeDisposable _subs = new();
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private void Awake()
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{
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Debug.Assert(_catalog != null, "[RegionLightController] _catalog 未赋值，请在 Inspector 中指定 RegionLightCatalogSO。", this);
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Debug.Assert(_globalLight != null, "[RegionLightController] _globalLight 未赋值，请在 Inspector 中绑定 Light2D。", this);
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}
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private void OnEnable()
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{
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_onRegionEntered?.Subscribe(OnRegionEntered).AddTo(_subs);
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}
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private void OnDisable()
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{
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_subs.Clear();
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}
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private void OnRegionEntered(string regionId)
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{
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if (!_catalog.TryGet(regionId, out var config)) return;
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if (_colorCoroutine != null) StopCoroutine(_colorCoroutine);
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if (_intensityCoroutine != null) StopCoroutine(_intensityCoroutine);
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_colorCoroutine = StartCoroutine(TweenColor(_globalLight.color, config.Color, _transitionDuration));
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_intensityCoroutine = StartCoroutine(TweenIntensity(_globalLight.intensity, config.Intensity, _transitionDuration));
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}
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// ── Coroutine helpers ────────────────────────────────────────────────────
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private IEnumerator TweenColor(Color from, Color to, float duration)
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{
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float elapsed = 0f;
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while (elapsed < duration)
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{
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elapsed += Time.deltaTime;
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_globalLight.color = Color.Lerp(from, to, Mathf.Clamp01(elapsed / duration));
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yield return null;
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}
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_globalLight.color = to;
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_colorCoroutine = null;
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}
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private IEnumerator TweenIntensity(float from, float to, float duration)
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{
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float elapsed = 0f;
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while (elapsed < duration)
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{
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elapsed += Time.deltaTime;
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_globalLight.intensity = Mathf.Lerp(from, to, Mathf.Clamp01(elapsed / duration));
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yield return null;
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}
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_globalLight.intensity = to;
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_intensityCoroutine = null;
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}
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}
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// ────────────────────────────────────────────────────────────────────────────
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// RegionLightCatalogSO
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// ────────────────────────────────────────────────────────────────────────────
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/// <summary>
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/// 区域 ID → Global Light 2D 颜色 + 强度映射表。
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/// 资产路径：Assets/ScriptableObjects/VFX/VFX_RegionLightCatalog.asset
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/// </summary>
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[CreateAssetMenu(menuName = "BaseGames/VFX/RegionLightCatalog")]
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public class RegionLightCatalogSO : ScriptableObject
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{
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[Serializable]
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public struct RegionLightConfig
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{
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public string regionId;
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public Color Color;
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[Range(0f, 1f)] public float Intensity;
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}
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[SerializeField] private RegionLightConfig[] _entries;
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/// <summary>根据 regionId 查找对应的灯光配置。</summary>
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public bool TryGet(string regionId, out RegionLightConfig cfg)
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{
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if (_entries != null)
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{
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foreach (var e in _entries)
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{
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if (e.regionId == regionId) { cfg = e; return true; }
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}
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}
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cfg = default;
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return false;
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}
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}
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}
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