296 lines
12 KiB
C#
296 lines
12 KiB
C#
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using UnityEditor;
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using UnityEditor.AddressableAssets;
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using UnityEditor.AddressableAssets.Settings;
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using UnityEditor.U2D;
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using UnityEngine;
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using UnityEngine.U2D;
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/// <summary>
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/// 预制体图集打包工具。
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///
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/// 【用途】
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/// 选中若干 UI 预制体（如大厅散包的各子面板）→ 扫描它们引用的全部 Sprite →
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/// 一键创建 SpriteAtlas 并把这些图合进去（自动按总像素估算合适的图集尺寸），
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/// 避免散包后每张小图单独打包/加载，也避免多个包重复携带同一批图。
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///
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/// 【使用】
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/// 1. Project 里选中一个或多个预制体（子面板 prefab）
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/// 2. 菜单 Tools → 图集工具 → [扫描选中预制体]
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/// 3. 检查图片列表（会自动排除 Unity 内置资源；可勾选排除大背景图）
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/// 4. 设置输出目录/图集名/尺寸（默认自动计算）/ Padding
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/// 5. 选择要加入的 Addressables 组（强烈建议：与使用这些图的 prefab 同组，
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/// 否则图集不进组会被引用它的每个 bundle 各复制一份！）
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/// 6. [创建图集] → 重建 Addressables 内容后生效
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///
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/// 【注意】
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/// - 打进图集的图片无需改 TextureImporter（图集优先于单图导入设置）
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/// - 单图超过图集最大尺寸时 SpriteAtlas 会自动分页（multi-atlas）
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/// - 创建后记得 Build → New Build 重建内容
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/// </summary>
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public class SpriteAtlasBuilderWindow : EditorWindow
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{
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[MenuItem("Tools/图集工具")]
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public static void Open()
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{
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var w = GetWindow<SpriteAtlasBuilderWindow>("图集工具");
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w.minSize = new Vector2(520f, 560f);
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}
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private class SpriteInfo
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{
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public Sprite sprite;
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public string path;
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public int w, h;
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public bool big; // 边长 ≥ 512 的大图（默认排除）
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}
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private readonly List<SpriteInfo> _sprites = new List<SpriteInfo>();
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private Vector2 _scroll;
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private string _outputDir = "Assets/MyGame/aa/UI/Atlases";
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private string _atlasName = "UIAtlas";
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private int _maxSizeIndex = 0;
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private readonly string[] _maxSizeOptions = { "自动(按总像素)", "1024", "2048", "4096" };
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private int _padding = 4;
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private bool _excludeBig = true;
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private string[] _groupNames = { "不加入(稍后手动)" };
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private int _groupIndex = 0;
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private void OnEnable() => RefreshGroups();
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private void RefreshGroups()
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{
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var list = new List<string> { "不加入(稍后手动)" };
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try
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{
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var s = AddressableAssetSettingsDefaultObject.Settings;
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if (s != null)
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list.AddRange(s.groups.Where(g => !g.ReadOnly).Select(g => g.Name));
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}
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catch { }
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_groupNames = list.ToArray();
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}
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private void OnGUI()
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{
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EditorGUILayout.HelpBox(
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"1. Project 里选中一个或多个 UI 预制体\n" +
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"2. 点 [扫描选中预制体] 收集引用的 Sprite\n" +
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"3. 创建图集时选择与这些预制体相同的 Addressables 组\n" +
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"（图集不进组会被引用它的每个 bundle 复制一份）", MessageType.Info);
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if (GUILayout.Button("扫描选中预制体", GUILayout.Height(32)))
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Scan();
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EditorGUILayout.Space(4);
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// ---- 扫描结果 ----
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if (_sprites.Count > 0)
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{
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var included = _sprites.Where(s => !(_excludeBig && s.big)).ToList();
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long totalPixels = included.Sum(s => (long)s.w * s.h);
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long bigCount = _sprites.Count(s => s.big);
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int autoSize = CalcAutoSize(included, _padding);
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EditorGUILayout.LabelField($"共 {_sprites.Count} 张图" +
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(bigCount > 0 ? $"（其中 {bigCount} 张大图，见下方排除开关）" : ""), EditorStyles.boldLabel);
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EditorGUILayout.LabelField($"合计像素: {totalPixels / 10000f:F1} 万 | 自动图集尺寸: {autoSize}");
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_excludeBig = EditorGUILayout.ToggleLeft("排除大图（边长≥512，背景图等通常不进图集）", _excludeBig);
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_scroll = EditorGUILayout.BeginScrollView(_scroll, GUILayout.MinHeight(180));
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foreach (var s in _sprites)
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{
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var style = s.big ? new GUIStyle(EditorStyles.label) { normal = { textColor = Color.yellow } } : EditorStyles.label;
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GUILayout.Label($"{s.w}×{s.h}{(s.big ? " [大图]" : "")} {s.path}", style);
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}
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EditorGUILayout.EndScrollView();
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}
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else
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{
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EditorGUILayout.HelpBox("尚未扫描（或选中对象里没有预制体）", MessageType.None);
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}
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EditorGUILayout.Space(8);
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// ---- 设置 ----
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EditorGUILayout.LabelField("图集设置", EditorStyles.boldLabel);
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_outputDir = EditorGUILayout.TextField("输出目录", _outputDir);
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_atlasName = EditorGUILayout.TextField("图集名称", _atlasName);
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_maxSizeIndex = EditorGUILayout.Popup("最大尺寸", _maxSizeIndex, _maxSizeOptions);
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_padding = EditorGUILayout.IntSlider("图集内边距(Padding)", _padding, 1, 16);
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EditorGUILayout.Space(4);
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EditorGUILayout.LabelField("加入 Addressables 组（建议与预制体同组）", EditorStyles.boldLabel);
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_groupIndex = EditorGUILayout.Popup("目标组", _groupIndex, _groupNames);
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EditorGUILayout.Space(8);
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using (new EditorGUI.DisabledScope(_sprites.Count == 0))
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{
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if (GUILayout.Button("创建图集", GUILayout.Height(36)))
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Create();
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}
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}
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/// <summary>扫描选中的预制体，收集全部 Sprite 引用（去重、排除引擎内置资源）</summary>
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private void Scan()
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{
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_sprites.Clear();
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var seen = new HashSet<Object>();
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int prefabCount = 0;
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foreach (var obj in Selection.objects)
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{
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string path = AssetDatabase.GetAssetPath(obj);
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if (string.IsNullOrEmpty(path) || !path.EndsWith(".prefab")) continue;
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var go = AssetDatabase.LoadAssetAtPath<GameObject>(path);
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if (go == null) continue;
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prefabCount++;
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foreach (var comp in go.GetComponentsInChildren<Component>(true))
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{
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if (comp == null) continue;
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var so = new SerializedObject(comp);
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var prop = so.GetIterator();
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while (prop.NextVisible(true))
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{
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if (prop.propertyType != SerializedPropertyType.ObjectReference) continue;
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var sp = prop.objectReferenceValue as Sprite;
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if (sp == null || !seen.Add(sp)) continue;
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string p = AssetDatabase.GetAssetPath(sp);
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if (string.IsNullOrEmpty(p) || p.StartsWith("Library/")) continue; // 引擎内置
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_sprites.Add(new SpriteInfo
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{
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sprite = sp,
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path = p,
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w = Mathf.CeilToInt(sp.rect.width),
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h = Mathf.CeilToInt(sp.rect.height),
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big = sp.rect.width >= 512 || sp.rect.height >= 512
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});
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}
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}
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}
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if (prefabCount == 0)
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ShowNotification(new GUIContent("选中对象里没有预制体"));
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else if (_sprites.Count == 0)
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ShowNotification(new GUIContent($"扫描了 {prefabCount} 个预制体，未发现 Sprite 引用"));
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else
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{
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// 默认图集名取第一个预制体名
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if (_atlasName == "UIAtlas" || string.IsNullOrEmpty(_atlasName))
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{
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var first = AssetDatabase.GetAssetPath(Selection.objects[0]);
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_atlasName = Path.GetFileNameWithoutExtension(first) + "Atlas";
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}
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ShowNotification(new GUIContent($"扫描 {prefabCount} 个预制体，发现 {_sprites.Count} 张图"));
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}
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}
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/// <summary>按总像素估算图集边长（利用率 70%，向上取 2 的幂，范围 256~4096）</summary>
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private static int CalcAutoSize(List<SpriteInfo> sprites, int padding)
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{
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long area = sprites.Sum(s => (long)(s.w + padding) * (s.h + padding));
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double need = area / 0.7;
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int side = Mathf.CeilToInt(Mathf.Sqrt((float)need));
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int pow = 256;
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while (pow < side && pow < 4096) pow <<= 1;
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return Mathf.Clamp(pow, 256, 4096);
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}
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/// <summary>创建图集并（可选）加入 Addressables 组</summary>
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private void Create()
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{
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var included = _sprites.Where(s => !(_excludeBig && s.big)).ToList();
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if (included.Count == 0)
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{
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ShowNotification(new GUIContent("没有可打包的图片（全被排除了？）"));
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return;
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}
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if (!AssetDatabase.IsValidFolder(_outputDir))
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{
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// 逐级创建目录
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string cur = "Assets";
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foreach (var seg in _outputDir.Substring("Assets/".Length).Split('/'))
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{
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string next = cur + "/" + seg;
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if (!AssetDatabase.IsValidFolder(next))
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AssetDatabase.CreateFolder(cur, seg);
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cur = next;
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}
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}
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string atlasPath = $"{_outputDir}/{_atlasName}.spriteatlas";
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if (File.Exists(atlasPath) && !EditorUtility.DisplayDialog("覆盖确认",
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$"已存在同名图集：\n{atlasPath}\n继续将覆盖重建。", "覆盖", "取消"))
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return;
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int maxSize = _maxSizeIndex == 0
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? CalcAutoSize(included, _padding)
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: int.Parse(_maxSizeOptions[_maxSizeIndex]);
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// SpriteAtlas 不是 ScriptableObject（继承自 Object），直接 new 后 CreateAsset
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var atlas = new SpriteAtlas();
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atlas.SetIncludeInBuild(true);
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// padding 通过序列化字段写入（m_EditorData.padding，该版本无公开编辑 API）
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var so = new SerializedObject(atlas);
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var padProp = so.FindProperty("m_EditorData.padding");
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if (padProp != null)
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{
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padProp.intValue = _padding;
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so.ApplyModifiedPropertiesWithoutUndo();
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}
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// Android / iOS：ASTC 6x6（移动端体积/质量均衡）
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foreach (var platform in new[] { "Android", "iPhone" })
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{
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var ps = atlas.GetPlatformSettings(platform);
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ps.overridden = true;
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ps.maxTextureSize = maxSize;
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ps.format = TextureImporterFormat.ASTC_6x6;
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ps.compressionQuality = 50;
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atlas.SetPlatformSettings(ps);
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}
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atlas.Add(included.Select(s => (Object)s.sprite).ToArray());
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AssetDatabase.CreateAsset(atlas, atlasPath);
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EditorUtility.SetDirty(atlas);
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AssetDatabase.SaveAssets();
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// 可选：加入 Addressables 组
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string groupMsg = "";
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if (_groupIndex > 0)
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{
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try
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{
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var settings = AddressableAssetSettingsDefaultObject.Settings;
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var group = settings.FindGroup(_groupNames[_groupIndex]);
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if (group != null)
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{
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settings.CreateOrMoveEntry(AssetDatabase.AssetPathToGUID(atlasPath), group);
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AssetDatabase.SaveAssets();
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groupMsg = $"\n已加入组: {group.Name}";
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}
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}
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catch (System.Exception e)
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{
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groupMsg = $"\n加入组失败(可手动添加): {e.Message}";
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}
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}
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Debug.Log($"[图集工具] 创建完成: {atlasPath}\n图片 {included.Count} 张 | 最大尺寸 {maxSize} | Padding {_padding}{groupMsg}");
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EditorUtility.DisplayDialog("图集工具",
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$"创建完成！\n\n{atlasPath}\n图片 {included.Count} 张\n最大尺寸 {maxSize}\nPadding {_padding}{groupMsg}\n\n" +
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"提醒：重建 Addressables 内容（Build → New Build）后生效。", "确定");
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}
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}
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