105 lines
3.9 KiB
C#
105 lines
3.9 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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using BaseGames.Core;
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namespace BaseGames.UI
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{
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/// <summary>
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/// 单个按键图标 Image 组件。
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///
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/// 支持两种查询模式:
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/// • ByActionName(推荐):填写 ActionName(如 "Interact"),
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/// 由 IInputIconService 自动解析当前设备 + 改键后的实际绑定路径 → 图标。
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/// • ByBindingPath(兼容/装饰用):直接填写固定路径(如 "<Keyboard>/space"),
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/// 适合教程截图等不跟随改键变化的场景。
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///
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/// ⚠️ 必须独立成文件(类名 = 文件名):作为可序列化的 MonoBehaviour,
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/// 若与其他类同处一个 .cs 文件(二级类),Unity 无法为其写出有效的 m_Script 引用,
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/// 挂载后存盘 / 重载会变成"缺失脚本"。
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/// </summary>
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[RequireComponent(typeof(Image))]
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public class InputIconImage : MonoBehaviour
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{
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public enum LookupMode { ByActionName, ByBindingPath }
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[SerializeField] private LookupMode _mode = LookupMode.ByActionName;
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[Tooltip("Action 名称,如 Interact / Jump / Attack(仅 ByActionName 模式使用)")]
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[SerializeField] private string _actionName;
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[Tooltip("固定绑定路径,如 <Keyboard>/space(仅 ByBindingPath 模式使用)")]
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[SerializeField] private string _bindingPath;
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private Image _image;
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private IInputIconService _iconService;
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// ── 静态注册表:替换 FindObjectsByType,O(1) 注册/注销,O(n) 广播 ────────
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private static readonly List<InputIconImage> _registry = new();
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/// <summary>通知注册表内所有已启用实例刷新图标(设备切换时调用)。</summary>
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internal static void RefreshAll()
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{
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for (int i = _registry.Count - 1; i >= 0; i--)
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{
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if (_registry[i] != null) _registry[i].Refresh();
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else _registry.RemoveAt(i); // 清理已销毁的残留引用
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}
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}
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private void Awake() => _image = GetComponent<Image>();
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private void OnEnable()
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{
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_iconService = ServiceLocator.GetOrDefault<IInputIconService>();
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if (_iconService != null)
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_iconService.OnIconSetChanged += Refresh;
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_registry.Add(this);
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Refresh();
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}
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private void OnDisable()
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{
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if (_iconService != null)
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_iconService.OnIconSetChanged -= Refresh;
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_registry.Remove(this);
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}
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/// <summary>刷新图标显示。设备切换或改键后由 InputDeviceIconSwitcher / InputIconService 调用。</summary>
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public void Refresh()
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{
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if (_image == null) return;
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// 若组件在 IInputIconService 注册前 Enable,此处补重试并补订阅
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if (_iconService == null)
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{
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_iconService = ServiceLocator.GetOrDefault<IInputIconService>();
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if (_iconService != null)
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_iconService.OnIconSetChanged += Refresh;
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}
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Sprite sprite = null;
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if (_mode == LookupMode.ByActionName && !string.IsNullOrEmpty(_actionName))
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{
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sprite = _iconService?.GetActionIcon(_actionName);
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}
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else if (_mode == LookupMode.ByBindingPath && !string.IsNullOrEmpty(_bindingPath))
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{
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// 使用固定路径在当前图标集查找(不随改键变化),适合装饰性按键说明
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sprite = _iconService?.GetPathIcon(_bindingPath);
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}
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if (sprite != null)
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{
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_image.sprite = sprite;
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_image.enabled = true;
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}
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else
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{
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_image.enabled = false;
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}
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}
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}
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}
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