Unity/R3/インストール

R3とは

UniRxの後継版

動作バージョン：Unity 2021.3以上

公式：https://neue.cc/2024/02/27_R3.html

R3インストール

公式：https://github.com/Cysharp/R3?tab=readme-ov-file#unity

参考：https://zenn.dev/shiena/articles/unity-install-r3

1. unityメイン/Edit/ProjectSettings/PackageManagerから以下を追加

Name: Unity NuGet
URL: https://unitynuget-registry.openupm.com
Scope(s): org.nuget

Name: OpenUPM
URL: https://package.openupm.com
Scope(s): com.cysharp

OR

Name: OpenUPM
URL: https://package.openupm.com
Scope(s): com.cysharp
Scope(s): org.nuget

ProjectSettings/PackageManagerSettings.asset ファイルが、更新されてることを確認。

1. unityメイン/Windows/PackageManagerで、Packagesを、MyRegistriesで、選択し、"R3"検索して、Cysharp/R3(NuGet)を、インストール。（現時点最新の1.0.0)
2. unityメイン/Windows/PackageManagerで、Packagesを、MyRegistriesで、選択し、"R3"検索して、Cysharp inc./R3を、インストール。（現時点最新の1.1.11)

ReactiveDictionaryを使う場合は以下もインストール

1. unityメイン/Windows/PackageManagerで、Packagesを、MyRegistriesで、選択し、"R3"検索して、Cysharp/ObservableCollections.R3(Nuget)を、インストール。（2025/3/21時点最新の3.3.3)

インストール確認

Packages/manifest.json

{
  "dependencies": {
    "com.cysharp.r3": "1.1.11",
    "org.nuget.observablecollections.r3": "3.3.3",
   },
  "scopedRegistries": [
    {
      "name": "OpenUPM",
      "url": "https://package.openupm.com",
      "scopes": [
        "com.cysharp",
        "org.nuget"
      ]
    }
  ]
}

があればok

unitynuget-registry.azurewebsites.netエラーが発生する場合

エラー詳細

Unable to perform online search:
  Cannot connect to 'unitynuget-registry.azurewebsites.net' (error code: ENOTFOUND). Verify your environment firewall policies allow connection to this host name. If your system is behind a proxy, verify your proxy environment variables (HTTP_PROXY and HTTPS_PROXY) are properly set.
UnityEditor.EditorApplication:Internal_CallUpdateFunctions () (at /Users/bokken/build/output/unity/unity/Editor/Mono/EditorApplication.cs:384)

以下ファイル内に、'unitynuget-registry.azurewebsites.net'があれば削除し、以下のように更新する Packages/manifest.json

{
  "dependencies": {
    "com.cysharp.r3": "1.1.11",
    "org.nuget.observablecollections.r3": "3.3.3",
   },
  "scopedRegistries": [
    {
      "name": "OpenUPM",
      "url": "https://package.openupm.com",
      "scopes": [
        "com.cysharp",
        "org.nuget"
      ]
    }
  ]
}

もしくはこちら

{
  "dependencies": {
    "com.cysharp.r3": "1.1.11",
    "org.nuget.observablecollections.r3": "3.3.3",
   },
   "scopedRegistries": [
    {
      "name": "Unity NuGet",
      "url": "https://unitynuget-registry.openupm.com",
      "scopes": [
        "org.nuget"
      ]
    },
    {
      "name": "OpenUPM",
      "url": "https://package.openupm.com",
      "scopes": [
        "com.cysharp"
      ]
    }
  ]
}

参考

https://zenn.dev/tkada/articles/a96258e080056a

https://qiita.com/toRisouP/items/4344fbcba7b7e8d8ce16