Unity编辑器 - 识别Lua文件

Unity编辑器 - 预览Lua文件

默认情况下Unity编辑器的Inspector窗口无法直接显示Lua文件详情

直接修改Inspector显示

Lua文件默认会被识别为DefaultAsset，我们可以通过重写DefaultAsset的Inspector面板来实现对Lua文件的预览

using System.IO;
using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(DefaultAsset))]
public class LuaInspector : UnityEditor.Editor
{
    
    
    GUIStyle textStyle;
    const int MaxLength = 5000;
    string detail;

    public override void OnInspectorGUI()
    {
    
    
        if (textStyle is null)
        {
    
    
            textStyle = new GUIStyle();
            textStyle.normal.textColor = Color.white;
        }

        string assetPath = AssetDatabase.GetAssetPath(target);
        if (!assetPath.EndsWith(".lua"))
            return;

        if (string.IsNullOrEmpty(detail))
        {
    
    
            detail = File.ReadAllText(assetPath);
            if (detail.Length > MaxLength)
                detail = detail.Substring(0, MaxLength) + "...\n\n<...etc...>";
        }

        GUILayout.Box(detail, textStyle);
    }
}

转换为TextAsset进行展示

读取文件内容后生成新的TextAsset再将新生成的TextAsset作为主要对象

using System.IO;
using UnityEditor.AssetImporters;
using UnityEngine;

[ScriptedImporter(1, ".lua")]
public class LuaImporter : ScriptedImporter
{
    
    
    string luaTxt;

    public override void OnImportAsset(AssetImportContext ctx)
    {
    
    
        if (string.IsNullOrEmpty(luaTxt))
            luaTxt = File.ReadAllText(ctx.assetPath);

        var display = new TextAsset(luaTxt);
        ctx.AddObjectToAsset("Lua Script", display);
        ctx.SetMainObject(display);
    }
}

参考

https://docs.unity.cn/cn/current/ScriptReference/AssetImporters.ScriptedImporter.html