Unity 编辑器开发实战【AssetDatabase】- 获取资产的依赖项、引用项
【摘要】
Unity AssetDatabase类中提供了获取资产依赖项的API，如果我们想要获取某一资产被哪些资产引用，可以通过如下思路去实现：
1.获取工程中的所有资产；
2.遍历每一项资产，获取其依赖项列表；
3.如果资产A的依赖项列表中包含资产B，则资产B被资产A引用。
用到的核心API：
1.根据guid获取资产路径
/...
Unity AssetDatabase类中提供了获取资产依赖项的API，如果我们想要获取某一资产被哪些资产引用，可以通过如下思路去实现：
1.获取工程中的所有资产；
2.遍历每一项资产，获取其依赖项列表；
3.如果资产A的依赖项列表中包含资产B，则资产B被资产A引用。
用到的核心API：
1.根据guid获取资产路径
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//
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// 摘要:
-
// Gets the corresponding asset path for the supplied GUID, or an empty string if
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// the GUID can't be found.
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//
-
// 参数:
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// guid:
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// The GUID of an asset.
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//
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// 返回结果:
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// Path of the asset relative to the project folder.
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public static string GUIDToAssetPath(string guid)
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{
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return GUIDToAssetPath_Internal(new GUID(guid));
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}
2.根据资产路径获取资产的类型
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//
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// 摘要:
-
// Returns the type of the main asset object at assetPath.
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//
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// 参数:
-
// assetPath:
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// Filesystem path of the asset to load.
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[MethodImpl(MethodImplOptions.InternalCall)]
-
public static extern Type GetMainAssetTypeAtPath(string assetPath);
3.根据资产路径获取该资产的依赖项：
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//
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// 摘要:
-
// Returns an array of all the assets that are dependencies of the asset at the
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// specified pathName. Note: GetDependencies() gets the Assets that are referenced
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// by other Assets. For example, a Scene could contain many GameObjects with a Material
-
// attached to them. In this case, GetDependencies() will return the path to the
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// Material Assets, but not the GameObjects as those are not Assets on your disk.
-
//
-
// 参数:
-
// pathName:
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// The path to the asset for which dependencies are required.
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//
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// recursive:
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// Controls whether this method recursively checks and returns all dependencies
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// including indirect dependencies (when set to true), or whether it only returns
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// direct dependencies (when set to false).
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//
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// 返回结果:
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// The paths of all assets that the input depends on.
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public static string[] GetDependencies(string pathName)
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{
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return GetDependencies(pathName, recursive: true);
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}
4.根据资产路径及类型加载资产
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//
-
// 摘要:
-
// Returns the first asset object of type type at given path assetPath.
-
//
-
// 参数:
-
// assetPath:
-
// Path of the asset to load.
-
//
-
// type:
-
// Data type of the asset.
-
//
-
// 返回结果:
-
// The asset matching the parameters.
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[MethodImpl(MethodImplOptions.InternalCall)]
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[NativeThrows]
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[PreventExecutionInState(AssetDatabasePreventExecution.kGatheringDependenciesFromSourceFile, PreventExecutionSeverity.PreventExecution_ManagedException, "Assets may not be loaded while dependencies are being gathered, as these assets may not have been imported yet.")]
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[TypeInferenceRule(TypeInferenceRules.TypeReferencedBySecondArgument)]
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public static extern UnityEngine.Object LoadAssetAtPath(string assetPath, Type type);
下面实现的工具，既可以获取资产的依赖项，也可以获取资产的引用项：
代码如下：
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using System;
-
using UnityEngine;
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using UnityEditor;
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using System.Linq;
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using System.Collections.Generic;
-
-
namespace SK.Framework
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{
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public class AssetsStatistics : EditorWindow
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{
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[MenuItem("SKFramework/Assets Statistics")]
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private static void Open()
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{
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GetWindow<AssetsStatistics>("Assets Statistics").Show();
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}
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-
private Vector2 selectedListScroll;
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//当前选中项索引
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private int currentSelectedIndex = -1;
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-
private enum Mode
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{
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Dependence,
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Reference,
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}
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private Mode mode = Mode.Dependence;
-
-
private Vector2 dependenceListScroll;
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private Vector2 referenceListScroll;
-
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private string[] dependenciesArray;
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private string[] referenceArray;
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private void OnGUI()
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{
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OnListGUI();
-
-
OnMenuGUI();
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}
-
-
private void OnListGUI()
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{
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if (Selection.assetGUIDs.Length == 0) return;
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selectedListScroll = EditorGUILayout.BeginScrollView(selectedListScroll);
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for (int i = 0; i < Selection.assetGUIDs.Length; i++)
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{
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//通过guid获取资产路径
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string path = AssetDatabase.GUIDToAssetPath(Selection.assetGUIDs[i]);
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GUILayout.BeginHorizontal(currentSelectedIndex == i ? "SelectionRect" : "dragtab first");
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//获取资产类型
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Type type = AssetDatabase.GetMainAssetTypeAtPath(path);
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GUILayout.Label(EditorGUIUtility.IconContent(GetIconName(type.Name)), GUILayout.Width(20f), GUILayout.Height(15f));
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GUILayout.Label(path);
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//点击选中
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if(Event.current.type == EventType.MouseDown && GUILayoutUtility.GetLastRect().Contains(Event.current.mousePosition))
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{
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currentSelectedIndex = i;
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Event.current.Use();
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GetDependencies();
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}
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GUILayout.EndHorizontal();
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}
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EditorGUILayout.EndScrollView();
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}
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private void OnMenuGUI()
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{
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GUILayout.FlexibleSpace();
-
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GUILayout.BeginVertical("Box", GUILayout.Height(position.height * .7f));
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{
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GUILayout.BeginHorizontal();
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{
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Color color = GUI.color;
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GUI.color = mode == Mode.Dependence ? color : Color.gray;
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if (GUILayout.Button("依赖", "ButtonLeft"))
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{
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mode = Mode.Dependence;
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}
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GUI.color = mode == Mode.Reference ? color : Color.gray;
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if (GUILayout.Button("引用", "ButtonRight"))
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{
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mode = Mode.Reference;
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}
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GUI.color = color;
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}
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GUILayout.EndHorizontal();
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switch (mode)
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{
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case Mode.Dependence: OnDependenceGUI(); break;
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case Mode.Reference: OnReferenceGUI(); break;
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}
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}
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GUILayout.EndVertical();
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}
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private void GetDependencies()
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{
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string guid = Selection.assetGUIDs[currentSelectedIndex];
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string path = AssetDatabase.GUIDToAssetPath(guid);
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dependenciesArray = AssetDatabase.GetDependencies(path);
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}
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private void OnDependenceGUI()
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{
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EditorGUILayout.HelpBox("该资产的依赖项", MessageType.Info);
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if (currentSelectedIndex != -1)
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{
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dependenceListScroll = EditorGUILayout.BeginScrollView(dependenceListScroll);
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for (int i = 0; i < dependenciesArray.Length; i++)
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{
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string dependency = dependenciesArray[i];
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GUILayout.BeginHorizontal("dragtab first");
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Type type = AssetDatabase.GetMainAssetTypeAtPath(dependency);
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GUILayout.Label(EditorGUIUtility.IconContent(GetIconName(type.Name)), GUILayout.Width(20f), GUILayout.Height(15f));
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GUILayout.Label(dependency);
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if (Event.current.type == EventType.MouseDown && GUILayoutUtility.GetLastRect().Contains(Event.current.mousePosition))
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{
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var obj = AssetDatabase.LoadAssetAtPath(dependency, type);
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EditorGUIUtility.PingObject(obj);
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Event.current.Use();
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}
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GUILayout.EndHorizontal();
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}
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EditorGUILayout.EndScrollView();
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}
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}
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private void OnReferenceGUI()
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{
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EditorGUILayout.HelpBox("该资产的引用项（需点击刷新按钮获取，需要一定时间）", MessageType.Info);
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GUI.enabled = currentSelectedIndex != -1;
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if (GUILayout.Button("刷新"))
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{
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if (EditorUtility.DisplayDialog("提醒", "获取工程资产之间的引用关系需要一定时间，是否确定开始", "确定", "取消"))
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{
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Dictionary<string, string[]> referenceDic = new Dictionary<string, string[]>();
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string[] paths = AssetDatabase.GetAllAssetPaths();
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for (int i = 0; i < paths.Length; i++)
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{
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referenceDic.Add(paths[i], AssetDatabase.GetDependencies(paths[i]));
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EditorUtility.DisplayProgressBar("进度", "获取工程资产之间的依赖关系", i + 1 / paths.Length);
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}
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EditorUtility.ClearProgressBar();
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string guid = Selection.assetGUIDs[currentSelectedIndex];
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string path = AssetDatabase.GUIDToAssetPath(guid);
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referenceArray = referenceDic.Where(m => m.Value.Contains(path)).Select(m => m.Key).ToArray();
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}
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}
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GUI.enabled = true;
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if(referenceArray != null)
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{
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referenceListScroll = EditorGUILayout.BeginScrollView(referenceListScroll);
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{
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for (int i = 0; i < referenceArray.Length; i++)
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{
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string reference = referenceArray[i];
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GUILayout.BeginHorizontal("dragtab first");
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Type type = AssetDatabase.GetMainAssetTypeAtPath(reference);
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GUILayout.Label(EditorGUIUtility.IconContent(GetIconName(type.Name)), GUILayout.Width(20f), GUILayout.Height(15f));
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GUILayout.Label(reference);
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if (Event.current.type == EventType.MouseDown && GUILayoutUtility.GetLastRect().Contains(Event.current.mousePosition))
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{
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var obj = AssetDatabase.LoadAssetAtPath(reference, type);
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EditorGUIUtility.PingObject(obj);
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Event.current.Use();
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}
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GUILayout.EndHorizontal();
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}
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}
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EditorGUILayout.EndScrollView();
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}
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}
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private string GetIconName(string typeName)
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{
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switch (typeName)
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{
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case "Material": return "d_Material Icon";
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case "Mesh": return "d_Mesh Icon";
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case "AnimationClip": return "d_AnimationClip Icon";
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case "GameObject": return "d_Prefab Icon";
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case "Texture2D": return "d_Texture Icon";
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case "MonoScript": return "d_cs Script Icon";
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case "AnimatorController": return "d_AnimatorController Icon";
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case "DefaultAsset": return "d_DefaultAsset Icon";
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case "TextAsset": return "d_TextAsset Icon";
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case "TimelineAsset": return "d_UnityEditor.Timeline.TimelineWindow";
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default: return "d__Help@2x";
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}
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}
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private void OnSelectionChange()
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{
-
currentSelectedIndex = -1;
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Repaint();
-
}
-
}
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}
文章来源: coderz.blog.csdn.net，作者：CoderZ1010，版权归原作者所有，如需转载，请联系作者。
原文链接：coderz.blog.csdn.net/article/details/123796260
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