452 lines
16 KiB
C#
452 lines
16 KiB
C#
using UnityEngine;
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using UnityEditor;
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using System.Collections.Generic;
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/// <summary>
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/// Sprite 预制体批量生成工具 —— EditorWindow 版本。
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/// 从选中的图片自动创建包含主 Sprite 和 EchoOutline 子物体的预制体。
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/// 菜单路径：Tools > Sprite预制体生成器
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/// </summary>
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public class SpritePrefabGeneratorWindow : EditorWindow
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{
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// ======================== 序列化字段 ========================
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[SerializeField] private List<Sprite> selectedSprites = new List<Sprite>();
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[SerializeField] private string outputPath = "Assets/Prefabs/Generated";
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// 材质路径常量
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private const string GroundClipMatPath = "Assets/Materials/cloud1_GroundClipMat.mat";
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private const string EchoOutlineMatPath = "Assets/Light/shaders/IndianOcean_SpriteEchoOutline.mat";
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// UI 状态
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private Vector2 _scrollPos;
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private List<string> _logMessages = new List<string>();
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// 缓存的居中灰色标签样式
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private GUIStyle _centeredGreyStyle;
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private GUIStyle CenteredGreyStyle
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{
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get
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{
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if (_centeredGreyStyle == null)
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{
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_centeredGreyStyle = new GUIStyle(EditorStyles.miniLabel);
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_centeredGreyStyle.alignment = TextAnchor.MiddleCenter;
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_centeredGreyStyle.normal.textColor = new Color(0.5f, 0.5f, 0.5f);
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}
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return _centeredGreyStyle;
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}
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}
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// ======================== 打开窗口 ========================
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[MenuItem("Tools/Sprite预制体生成器")]
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public static void ShowWindow()
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{
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var win = GetWindow<SpritePrefabGeneratorWindow>("Sprite预制体生成器");
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win.minSize = new Vector2(420, 520);
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}
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// ======================== GUI ========================
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private void OnGUI()
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{
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_scrollPos = EditorGUILayout.BeginScrollView(_scrollPos);
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// ---- 标题 ----
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GUILayout.Label("Sprite 预制体批量生成器", EditorStyles.boldLabel);
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EditorGUILayout.HelpBox(
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"将图片拖入下方区域，自动生成预制体。\n" +
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"预制体结构：\n" +
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" 父物体（图片名）→ SpriteRenderer + GroundClip材质\n" +
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" 子物体（EchoOutline）→ SpriteRenderer + EchoOutline材质 + Collider",
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MessageType.Info);
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EditorGUILayout.Space(8);
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// ---- Sprite 选择区 ----
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GUILayout.Label("① 选择 Sprite", EditorStyles.boldLabel);
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DrawDropArea();
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DrawSpriteList();
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EditorGUILayout.Space(8);
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// ---- 输出路径 ----
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GUILayout.Label("② 输出路径", EditorStyles.boldLabel);
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EditorGUILayout.BeginHorizontal();
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outputPath = EditorGUILayout.TextField(outputPath);
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if (GUILayout.Button("浏览", GUILayout.Width(50)))
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{
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string folder = EditorUtility.OpenFolderPanel("选择预制体输出文件夹", "Assets", "");
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if (!string.IsNullOrEmpty(folder))
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{
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int idx = folder.IndexOf("Assets");
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if (idx >= 0)
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outputPath = folder.Substring(idx);
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else
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EditorUtility.DisplayDialog("错误", "请选择项目 Assets 目录下的文件夹", "确定");
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}
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}
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EditorGUILayout.EndHorizontal();
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EditorGUILayout.Space(8);
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// ---- 材质预览 ----
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GUILayout.Label("③ 材质引用（自动加载）", EditorStyles.boldLabel);
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DrawMaterialPreview(GroundClipMatPath, "GroundClip 材质");
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DrawMaterialPreview(EchoOutlineMatPath, "EchoOutline 材质");
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EditorGUILayout.Space(12);
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// ---- 生成按钮 ----
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GUI.enabled = selectedSprites.Count > 0;
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if (GUILayout.Button($"批量生成预制体 ({selectedSprites.Count})", GUILayout.Height(36)))
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{
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GenerateAll();
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}
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GUI.enabled = true;
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EditorGUILayout.Space(8);
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// ---- 日志 ----
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if (_logMessages.Count > 0)
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{
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GUILayout.Label("日志", EditorStyles.boldLabel);
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foreach (var msg in _logMessages)
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EditorGUILayout.LabelField(msg, EditorStyles.miniLabel);
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}
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EditorGUILayout.EndScrollView();
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}
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// ======================== 拖放区域 ========================
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private void DrawDropArea()
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{
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Rect dropRect = GUILayoutUtility.GetRect(0, 70, GUILayout.ExpandWidth(true));
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GUI.Box(dropRect, GUIContent.none, EditorStyles.helpBox);
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// 绘制提示文字
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EditorGUI.LabelField(dropRect,
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selectedSprites.Count == 0
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? "将 Sprite / Texture 从 Project 拖入此处"
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: $"已选择 {selectedSprites.Count} 个 Sprite（可继续拖入追加）",
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CenteredGreyStyle);
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// 处理拖放事件
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EventType evtType = Event.current.type;
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if (evtType == EventType.DragUpdated || evtType == EventType.DragPerform)
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{
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bool hasValid = false;
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foreach (var obj in DragAndDrop.objectReferences)
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{
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if (obj is Sprite || obj is Texture2D)
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{
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hasValid = true;
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break;
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}
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}
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if (hasValid) DragAndDrop.visualMode = DragAndDropVisualMode.Copy;
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if (evtType == EventType.DragPerform)
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{
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DragAndDrop.AcceptDrag();
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AddFromDragObjects();
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}
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Event.current.Use();
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}
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}
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private void AddFromDragObjects()
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{
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foreach (var obj in DragAndDrop.objectReferences)
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{
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if (obj is Sprite sp)
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{
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if (!selectedSprites.Contains(sp))
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selectedSprites.Add(sp);
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}
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else if (obj is Texture2D tex)
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{
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string path = AssetDatabase.GetAssetPath(tex);
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// 加载该纹理下的所有 Sprite（支持 Multiple 模式）
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var subs = AssetDatabase.LoadAllAssetsAtPath(path);
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bool added = false;
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foreach (var sub in subs)
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{
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if (sub is Sprite s && !selectedSprites.Contains(s))
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{
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selectedSprites.Add(s);
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added = true;
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}
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}
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// Single 模式：直接加载
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if (!added)
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{
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var single = AssetDatabase.LoadAssetAtPath<Sprite>(path);
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if (single != null && !selectedSprites.Contains(single))
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selectedSprites.Add(single);
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}
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}
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}
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}
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// ======================== Sprite 列表 ========================
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private void DrawSpriteList()
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{
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if (selectedSprites.Count == 0) return;
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EditorGUILayout.BeginHorizontal();
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GUILayout.FlexibleSpace();
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if (GUILayout.Button("清空列表", GUILayout.Width(70)))
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selectedSprites.Clear();
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EditorGUILayout.EndHorizontal();
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for (int i = selectedSprites.Count - 1; i >= 0; i--)
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{
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EditorGUILayout.BeginHorizontal(EditorStyles.helpBox);
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// Sprite 缩略图
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var sp = selectedSprites[i];
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if (sp != null)
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{
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var preview = AssetPreview.GetMiniThumbnail(sp);
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GUILayout.Label(preview, GUILayout.Width(20), GUILayout.Height(20));
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GUILayout.Label(sp.name, GUILayout.ExpandWidth(true));
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}
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else
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{
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GUILayout.Label("(null)", GUILayout.ExpandWidth(true));
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}
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if (GUILayout.Button("×", GUILayout.Width(22)))
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selectedSprites.RemoveAt(i);
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EditorGUILayout.EndHorizontal();
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}
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}
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// ======================== 材质预览 ========================
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private void DrawMaterialPreview(string assetPath, string label)
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{
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var mat = AssetDatabase.LoadAssetAtPath<Material>(assetPath);
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if (mat != null)
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{
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EditorGUILayout.ObjectField(label, mat, typeof(Material), false);
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}
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else
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{
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EditorGUILayout.HelpBox($"未找到材质：{assetPath}", MessageType.Warning);
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}
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}
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// ======================== 批量生成 ========================
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private void GenerateAll()
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{
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// 移除空项
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selectedSprites.RemoveAll(s => s == null);
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if (selectedSprites.Count == 0)
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{
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EditorUtility.DisplayDialog("提示", "请先选择至少一个 Sprite", "确定");
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return;
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}
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// 加载材质
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Material groundClipMat = AssetDatabase.LoadAssetAtPath<Material>(GroundClipMatPath);
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Material echoOutlineMat = AssetDatabase.LoadAssetAtPath<Material>(EchoOutlineMatPath);
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if (groundClipMat == null)
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{
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EditorUtility.DisplayDialog("错误", $"找不到材质：{GroundClipMatPath}", "确定");
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return;
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}
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if (echoOutlineMat == null)
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{
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EditorUtility.DisplayDialog("错误", $"找不到材质：{EchoOutlineMatPath}", "确定");
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return;
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}
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// 确保输出目录存在
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EnsureFolderExists(outputPath);
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_logMessages.Clear();
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int count = 0;
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GameObject lastPrefab = null;
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int total = selectedSprites.Count;
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for (int idx = 0; idx < total; idx++)
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{
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var sprite = selectedSprites[idx];
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if (EditorUtility.DisplayCancelableProgressBar("生成预制体",
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$"正在生成 {sprite.name}... ({idx + 1}/{total})", (float)idx / total))
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break;
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var prefab = GenerateSingle(sprite, groundClipMat, echoOutlineMat);
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if (prefab != null)
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{
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count++;
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lastPrefab = prefab;
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}
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}
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EditorUtility.ClearProgressBar();
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// 保存并刷新
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AssetDatabase.SaveAssets();
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AssetDatabase.Refresh();
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_logMessages.Add($"✓ 共生成 {count} 个预制体 → {outputPath}");
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Debug.Log($"[SpritePrefabGenerator] 共生成 {count} 个预制体");
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if (lastPrefab != null)
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{
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Selection.activeObject = lastPrefab;
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EditorGUIUtility.PingObject(lastPrefab);
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}
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Repaint();
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if (count > 0)
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EditorUtility.DisplayDialog("完成", $"已生成 {count} 个预制体\n路径：{outputPath}", "确定");
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}
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// ======================== 生成单个预制体 ========================
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private GameObject GenerateSingle(Sprite sprite, Material groundClipMat, Material echoOutlineMat)
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{
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// 清理文件名中的非法字符
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string spriteName = SanitizeFileName(sprite.name);
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string prefabPath = $"{outputPath}/{spriteName}.prefab";
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// ---- 父物体 ----
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GameObject root = new GameObject(sprite.name); // GameObject 名用原始名
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root.transform.localPosition = Vector3.zero;
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root.transform.localRotation = Quaternion.identity;
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root.transform.localScale = Vector3.one;
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// 父物体 SpriteRenderer
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var parentSR = root.AddComponent<SpriteRenderer>();
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parentSR.sprite = sprite;
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parentSR.sharedMaterial = groundClipMat;
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parentSR.sortingOrder = 1;
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// ---- 子物体 EchoOutline ----
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GameObject child = new GameObject("EchoOutline");
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child.transform.SetParent(root.transform, false);
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child.transform.localPosition = Vector3.zero;
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child.transform.localRotation = Quaternion.identity;
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child.transform.localScale = Vector3.one;
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// 子物体 SpriteRenderer
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var childSR = child.AddComponent<SpriteRenderer>();
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childSR.sprite = sprite;
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childSR.sharedMaterial = echoOutlineMat;
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childSR.sortingOrder = 10001;
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// 子物体 Collider（根据 Sprite Pivot 自动设置）
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SetupCollider2D(child, sprite);
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// 保存为预制体并验证结果
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bool success;
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PrefabUtility.SaveAsPrefabAsset(root, prefabPath, out success);
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Object.DestroyImmediate(root);
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if (success)
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{
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var asset = AssetDatabase.LoadAssetAtPath<GameObject>(prefabPath);
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_logMessages.Add($"✓ {spriteName}.prefab");
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Debug.Log($"[SpritePrefabGenerator] ✓ 已创建预制体：{prefabPath}");
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return asset;
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}
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else
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{
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_logMessages.Add($"✗ {spriteName}.prefab 保存失败");
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Debug.LogWarning($"[SpritePrefabGenerator] ✗ 保存失败：{prefabPath}");
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return null;
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}
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}
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// ======================== Collider 设置 ========================
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/// <summary>
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/// 根据 Sprite 的 Pivot 自动设置 2D Collider。
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/// 优先使用 Sprite Physics Shape（精灵物理轮廓），
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/// 若无则使用 Sprite 边界矩形（考虑 Pivot 偏移）。
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/// </summary>
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private void SetupCollider2D(GameObject go, Sprite sprite)
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{
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float ppu = sprite.pixelsPerUnit;
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Vector2 pivot = sprite.pivot; // 像素坐标（用于 BoxCollider fallback）
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// 尝试使用 Sprite Physics Shape
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// 注意：GetPhysicsShape 返回的坐标已经是像素单位且相对于 Pivot，
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// 因此只需除以 PPU 即可转为世界单位
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List<Vector2[]> paths = GetSpritePhysicsShape(sprite);
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if (paths != null && paths.Count > 0)
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{
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var poly = go.AddComponent<PolygonCollider2D>();
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poly.pathCount = paths.Count;
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for (int i = 0; i < paths.Count; i++)
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{
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var worldPoints = new Vector2[paths[i].Length];
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for (int j = 0; j < paths[i].Length; j++)
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{
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// Physics shape 坐标 = 像素、相对 pivot → 除以 PPU 得到世界单位
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worldPoints[j] = paths[i][j] / ppu;
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}
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poly.SetPath(i, worldPoints);
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}
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}
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else
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{
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// Fallback：基于 Sprite 边界矩形 + Pivot 偏移
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var box = go.AddComponent<BoxCollider2D>();
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Vector2 sizePx = new Vector2(sprite.rect.width, sprite.rect.height);
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box.size = sizePx / ppu;
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box.offset = (sizePx * 0.5f - pivot) / ppu;
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}
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}
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/// <summary>
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/// 读取 Sprite 的物理形状（Physics Shape），返回路径列表。
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/// </summary>
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private List<Vector2[]> GetSpritePhysicsShape(Sprite sprite)
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{
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var result = new List<Vector2[]>();
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int pathCount = sprite.GetPhysicsShapeCount();
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for (int i = 0; i < pathCount; i++)
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{
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var points = new List<Vector2>();
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sprite.GetPhysicsShape(i, points);
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if (points.Count >= 3)
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result.Add(points.ToArray());
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}
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return result;
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}
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/// <summary>
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/// 清理文件名中的非法字符（/\:*?"<>|）。
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/// </summary>
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private static string SanitizeFileName(string name)
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{
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foreach (char c in System.IO.Path.GetInvalidFileNameChars())
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name = name.Replace(c, '_');
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return name;
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}
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// ======================== 工具方法 ========================
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/// <summary>
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/// 确保 Asset 目录链存在（递归创建）。
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/// </summary>
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private void EnsureFolderExists(string folderPath)
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{
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if (AssetDatabase.IsValidFolder(folderPath)) return;
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string parent = System.IO.Path.GetDirectoryName(folderPath).Replace('\\', '/');
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if (!string.IsNullOrEmpty(parent) && !AssetDatabase.IsValidFolder(parent))
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EnsureFolderExists(parent);
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string folderName = System.IO.Path.GetFileName(folderPath);
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AssetDatabase.CreateFolder(parent, folderName);
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}
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}
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