Unity simple notifications

Simple but powerful UI notifications package for Unity game engine.

• How to use
• Install
  • via npm
  • via OpenUPM
  • via Git URL
  • Tests
• Performance and thread safety
• Configuration

How to use

1. Right click scene hierarchy
2. Click UI/Notifications

Now you can send Notifications from your script like this:

Notifications.Send("Hello world");

Specify type (changes notification color) and click events with optional parameters:

private void Error()
{
   Notifications.Send("Spooky error!", NotificationType.Error, OnClick);
}

public void OnClick()
{
    // Do something.
}

There is also async overload:

await Notifications.SendAsync("Warning!", NotificationType.Warning);

You can also hook Translation / any fuction to handle messages before sending like so:

private void Start()
{
    Notifications.TranslationFunction = Translate;
}

private string Translate(string key)
{
    // Do something.
    return key;
}

Install

via npm

Open Packages/manifest.json with your favorite text editor. Add a scoped registry and following line to dependencies block:

{
  "scopedRegistries": [
    {
      "name": "npmjs",
      "url": "https://registry.npmjs.org/",
      "scopes": [
        "com.3d-group"
      ]
    }
  ],
  "dependencies": {
    "com.3d-group.unity-simple-notifications": "1.0.0"
  }
}

Package should now appear in package manager.

via OpenUPM

The package is also available on the openupm registry. You can install it eg. via openupm-cli.

openupm add com.3d-group.unity-simple-notifications

via Git URL

Open Packages/manifest.json with your favorite text editor. Add following line to the dependencies block:

{
  "dependencies": {
    "com.3d-group.unity-simple-notifications": "https://github.com/3d-group/unity-simple-notifications.git"
  }
}

Tests

The package can optionally be set as testable. In practice this means that tests in the package will be visible in the Unity Test Runner.

Open Packages/manifest.json with your favorite text editor. Add following line after the dependencies block:

{
  "dependencies": {
  },
  "testables": [ "com.3d-group.unity-simple-notifications" ]
}

Performance and thread safety 🚀

• Notifications are rate limited based on duplicates sent recently and max notifications queue length
• Notifications can be send from another thread. Creating GameObjects still always happens on main thread

Here is how it looks when billion notifications are sent simultaneously from another thread: 😄

Try it yourself! Code:

using UnityEngine;
using System.Threading;
using Group3d.Notifications;

public class TEST : MonoBehaviour
{
    private void Start()
    {
        new Thread(() =>
        {
            Thread.CurrentThread.IsBackground = true;
            var r = new System.Random();
            int counter = 0;
            while (counter < 1000000000)
            {
                Notifications.Send($"Test {r.Next(0, 10000)}");
                counter++;
            }
        }).Start();
    }
}

Configuration

Confurable from the inspector:

Custom notification prefab can be created and assigned in the inspector. If doing so, consider these things:

• Prefab must have NotificationUI component (included in the package)
• Prefab must have RectTransform component with anchors set to top-stretch

If prefab is null, notification will be created dynamically.

Optional Font parameter is only used when notification is created dynamically - if that is the only thing you want to change.