增加A2WToolBox工具集，增加Launch场景核LaunchPanel

Assets/A2WToolBox/Runtime/UIManager/UIManager.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using A2W;
+using Cysharp.Threading.Tasks;
+using System.Linq;
+
+namespace A2W
+{
+    public class UIManager : Singleton<UIManager>
+    {
+        public const string panel_prefabs_dir_path = "Assets/Gameplay/Prefabs/UIPanel/"; // UI面板预制体目录
+
+        // 这里保存IUIPanel的list
+        List<UIPanel> panels;
+        private Canvas mainCanvas;
+        private GameObject canvasObject;
+
+        private string defaultPanelPath;
+
+        public void Init(string defaultPanelPath = panel_prefabs_dir_path)
+        {
+            this.defaultPanelPath = defaultPanelPath;
+
+            if (panels is null)
+            {
+                panels = new List<UIPanel>();
+            }
+
+            // 生成canvas
+            CreateCanvas();
+        }
+
+        public void DestroyAllExceptLoading()
+        {
+            var panelsToRemove = panels.Where(panel => !(panel is ITransition)).ToList();
+
+            foreach (var panel in panelsToRemove)
+            {
+                Destroy(panel.gameObject);
+                panels.Remove(panel);
+            }
+        }
+
+        private void CreateCanvas()
+        {
+            if (canvasObject is not null) return;
+
+            canvasObject = new GameObject("UICanvas");
+            canvasObject.transform.SetParent(transform, false);
+
+            mainCanvas = canvasObject.AddComponent<Canvas>();
+            mainCanvas.renderMode = RenderMode.ScreenSpaceOverlay;
+            //mainCanvas.sortingOrder = 1000;
+
+            UnityEngine.UI.CanvasScaler canvasScaler = canvasObject.AddComponent<UnityEngine.UI.CanvasScaler>();
+            canvasScaler.uiScaleMode = UnityEngine.UI.CanvasScaler.ScaleMode.ScaleWithScreenSize;
+            canvasScaler.referenceResolution = new Vector2(Screen.width, Screen.height);
+
+            canvasObject.AddComponent<UnityEngine.UI.GraphicRaycaster>();
+        }
+
+        public async UniTask<T> InitPanel<T>() where T : UIPanel
+        {
+            // 在这里加载对应panel的预制体
+            T panel = (T)await Resources.LoadAsync<T>(GetPanelPath<T>());
+
+            // 加载完了以后存在panels里
+            if (panel != null)
+            {
+                panel.transform.SetParent(mainCanvas.transform, false);
+                panels.Add(panel);
+
+                panel.Init();
+            }
+
+            return panel;
+        }
+
+        public async UniTask<T> InitPanel<T>(string path) where T : UIPanel
+        {
+            // 在这里加载对应panel的预制体
+            T panel = (T)await Resources.LoadAsync<T>(GetPanelPath<T>());
+
+            // 加载完了以后存在panels里
+            if (panel != null)
+            {
+                panel.transform.SetParent(mainCanvas.transform, false);
+                panels.Add(panel);
+
+                panel.Init();
+            }
+
+            return panel;
+        }
+
+        public async UniTask<T> ShowPanel<T>() where T : UIPanel
+        {
+            // 先判断panels里有没有对应的panel，没有就先调用InitPanel
+            T panel = GetPanel<T>();
+            if (panel == null)
+            {
+                await InitPanel<T>();
+                panel = GetPanel<T>();
+            }
+
+            // 播放Show动画 直接调用UIPanel的 public abstract UniTask Show();
+            if (panel != null)
+            {
+                await panel.Show();
+            }
+
+            return panel;
+        }
+
+        public async UniTask<T> HidePanel<T>() where T : UIPanel
+        {
+            // 播放Hide动画 直接调用UIPanel的 public abstract UniTask Hide();
+            T panel = GetPanel<T>();
+            if (panel != null)
+            {
+                await panel.Hide();
+            }
+
+            // 后续会增加回收机制，资源紧张时释放不需要的panel
+
+            return panel;
+        }
+
+        public T GetPanel<T>() where T : UIPanel
+        {
+            if (panels == null) return null;
+            return panels.OfType<T>().FirstOrDefault();
+        }
+
+        private string GetPanelPath<T>() where T : UIPanel
+        {
+            return defaultPanelPath + typeof(T).Name; // 使用Name而不是ToString()获取更简洁的类型名
+        }
+    }
+}