Unity打包代码到DLL的实现

using UnityEngine;
using UnityEditor;
using UnityEditor.Build.Player;
using System.IO;

public class CompileDll
{
    // 菜单栏添加按钮
    [MenuItem("Tools/CompileDll")]
    static void Compile()
    {
        // 设置需要打DLL 的平台 
        BuildTarget target = BuildTarget.StandaloneWindows64;
        ScriptCompilationSettings scriptCompilationSettings = new ScriptCompilationSettings();
        scriptCompilationSettings.group = BuildPipeline.GetBuildTargetGroup(target);
        scriptCompilationSettings.target = target;

        // 获取 dll 输出目录
        string outDir = Application.dataPath;
        outDir = outDir.Substring(0, outDir.IndexOf("Assets"));
        outDir = string.Format("{0}DLL", outDir);
        if (!Directory.Exists(outDir))
        {
            Directory.CreateDirectory(outDir);
        }

        // 编译DLL
        ScriptCompilationResult scriptCompilationResult = PlayerBuildInterface.CompilePlayerScripts(scriptCompilationSettings, outDir);
        foreach(var ass in scriptCompilationResult.assemblies)
        {
            Debug.LogFormat("compile assemblies:{0}/{1}", outDir, ass);
        }
    }

}