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Fix the missing .meta for copied library. #1153

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Fix the missing .meta for copied library. #1153

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116 changes: 82 additions & 34 deletions unity/Editor/Bindings/MujocoBinaryRetriever.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -19,47 +19,95 @@
using UnityEditor.PackageManager;
using UnityEngine;

namespace Mujoco {
public class MujocoBinaryRetriever {
namespace Mujoco
{
public class MujocoBinaryRetriever
{

[InitializeOnLoadMethod]
static void SubscribeToEvent() {
// This causes the method to be invoked after the Editor registers the new list of packages.
Events.registeredPackages += RegisteredPackagesEventHandler;
}
[InitializeOnLoadMethod]
static void SubscribeToEvent()
{
// This causes the method to be invoked after the Editor registers the new list of packages.
Events.registeredPackages += RegisteredPackagesEventHandler;
}

static void RegisteredPackagesEventHandler(
PackageRegistrationEventArgs packageRegistrationEventArgs) {
foreach (var packageInfo in packageRegistrationEventArgs.added) {
if (packageInfo.name.Equals("org.mujoco")) {
var mujocoPath = packageInfo.assetPath;
if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) {
if (AssetDatabase.LoadMainAssetAtPath(mujocoPath + "/mujoco.dylib") == null) {
File.Copy(
"/Applications/MuJoCo.app/Contents/Frameworks" +
"/mujoco.framework/Versions/Current/libmujoco.3.0.1.dylib",
mujocoPath + "/mujoco.dylib");
AssetDatabase.Refresh();
static void RegisteredPackagesEventHandler(
PackageRegistrationEventArgs packageRegistrationEventArgs)
{
foreach (var packageInfo in packageRegistrationEventArgs.added)
{
if (packageInfo.name.Equals("org.mujoco"))
{
var mujocoPath = packageInfo.assetPath;
if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
if (AssetDatabase.LoadMainAssetAtPath(mujocoPath + "/mujoco.dylib") == null)
{
File.Copy(
"/Applications/MuJoCo.app/Contents/Frameworks" +
"/mujoco.framework/Versions/Current/libmujoco.3.0.1.dylib",
mujocoPath + "/mujoco.dylib");
GenerateMetaFile(mujocoPath + "/mujoco.dylib");
AssetDatabase.Refresh();

}
}
} else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) {
if (AssetDatabase.LoadMainAssetAtPath(mujocoPath + "/libmujoco.so") == null) {
File.Copy(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) +
"/.mujoco/mujoco-3.0.1/lib/libmujoco.so.3.0.1",
mujocoPath + "/libmujoco.so");
AssetDatabase.Refresh();
else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
if (AssetDatabase.LoadMainAssetAtPath(mujocoPath + "/libmujoco.so") == null)
{
File.Copy(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) +
"/.mujoco/mujoco-3.0.1/lib/libmujoco.so.3.0.1",
mujocoPath + "/libmujoco.so");
GenerateMetaFile(mujocoPath + "/libmujoco.so");
AssetDatabase.Refresh();

}
}
} else {
if (AssetDatabase.LoadMainAssetAtPath(mujocoPath + "/mujoco.dll") == null) {
File.Copy(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) +
"\\MuJoCo\\bin\\mujoco.dll",
mujocoPath + "\\mujoco.dll");
AssetDatabase.Refresh();
else
{
if (AssetDatabase.LoadMainAssetAtPath(mujocoPath + "/mujoco.dll") == null)
{
File.Copy(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) +
"\\MuJoCo\\bin\\mujoco.dll",
mujocoPath + "\\mujoco.dll");
GenerateMetaFile(mujocoPath + "\\mujoco.dll");
AssetDatabase.Refresh();

}
}
}
}
}
static void GenerateMetaFile(string file)
{
string metaFileName = file + ".meta";

// Check if .meta file exists.
if (File.Exists(metaFileName))
{
Console.WriteLine("Meta file for " + file + " is already created!");
return;
}

// Create a uuid
var uuidN = Guid.NewGuid().ToString("N");

// Write content to .meta
using (StreamWriter writer = File.CreateText(metaFileName))
{
writer.WriteLine("fileFormatVersion: 2");
writer.WriteLine("guid: " + (uuidN.ToString()));
writer.WriteLine("DefaultImporter:");
writer.WriteLine(" externalObjects: {}");
writer.WriteLine(" userData: ");
writer.WriteLine(" assetBundleName: ");
writer.WriteLine(" assetBundleVariant: ");
}

Console.WriteLine("Meta file for " + file + "created!");
}
}
}
}