Photon Fusion Test Sample

This project is a technical sample demonstrating a multiplayer setup using Photon Fusion in a Host-Client mode. Initially created as a successful test assignment, it has been significantly refactored and enhanced to serve as a public demonstration of modern development practices and code culture.

The core of the refactoring process was performed using OpenAI Codex as the primary AI-assisted development environment. This approach was central to implementing a cleaner architecture and successfully executing a version migration of the Photon Fusion SDK from 2.0.3 to 2.0.6. I've shared a detailed breakdown of this experience in my article, Vibe coding with OpenAI Codex.

The resulting architecture showcases proficiency in various technologies and patterns, including:

• VContainer for Dependency Injection
• Addressables for asset management
• NUnit for unit testing
• Object Pooling for performance optimization

Prerequisites

• Unity 6000.0.24f1
• Photon Fusion 2.0.6

Installation

1. Clone the repository:

   git clone [https://github.com/Corriscant/Fusion-Task-Refined.git](https://github.com/Corriscant/Fusion-Task-Refined.git)

2. Open the project in Unity. Unity will complain about missing dependencies. This is expected.
3. Install Photon Fusion:
   • Download Fusion SDK v2.0.6 from the Photon Engine website.
   • In the Unity Editor, go to Assets -> Import Package -> Custom Package...
   • Select the downloaded fusion.v2.0.6.unitypackage file and import all assets.
4. Verify VContainer Dependency:
   • This project uses VContainer for dependency injection.
   • The Unity Package Manager should automatically resolve and install this package when you open the project. If you encounter any compilation errors related to VContainer, please check the Window > Package Manager to ensure it was installed correctly.

Configuration

After installation, you need to verify the Photon App ID.

1. In the Unity Editor, open the Fusion Hub by navigating to Tools > Fusion > Fusion Hub > Welcome.
2. The project includes a pre-configured demo App ID, which you will see in the Fusion App Id field.
3. This ID is provided for convenience and operates on a free plan with a limit of 20 concurrent users. If you intend to use this project as a basis for your own, please replace it with your own App ID from the Photon Dashboard.

How to Test

To test the multiplayer functionality, you need to run at least two instances of the application: one as the Host and one as the Client.

1. Create a Build:

   • In the Unity Editor, go to File -> Build Profiles
   • Platforms: Windows
   • Click "Build" and choose a location to save the standalone application.

2. Run Host & Client:

   • Run the build you just created. This will act as your Client.
   • Back in the Unity Editor, press the Play button. This will act as your Host.
   • Or you can just run some EXE instances of the Build you just created.

3. Connect:

   • In the Host instance (Unity Editor), click the "Host" button.
   • In the Client instance (the build), click the "Join" button to connect to the host.