unity-monobehaviours.md

Unity MonoBehaviours

using Pure.DI;
using UnityEngine;

public class Clock : MonoBehaviour
{
    private const float HoursToDegrees = -30f, MinutesToDegrees = -6f, SecondsToDegrees = -6f;

    [SerializeField]
    private Transform hoursPivot;

    [SerializeField]
    private Transform minutesPivot;

    [SerializeField]
    private Transform secondsPivot;

    [Dependency]
    public IClockService ClockService { private get; set; }

    public void Start()
    {
        // Injects dependencies
        Composition.Shared.BuildUp(this);
    }

    public void Update()
    {
        var now = ClockService.Now.TimeOfDay;

        hoursPivot.localRotation = Quaternion
            .Euler(0f, 0f, HoursToDegrees * (float)now.TotalHours);

        minutesPivot.localRotation = Quaternion
            .Euler(0f, 0f, MinutesToDegrees * (float)now.TotalMinutes);

        secondsPivot.localRotation = Quaternion
            .Euler(0f, 0f, SecondsToDegrees * (float)now.TotalSeconds);
    }
}

public class OtherClock : MonoBehaviour
{
    [Dependency]
    public IClockService ClockService { private get; set; }

    public void Start()
    {
        // Injects dependencies
        Composition.Shared.BuildUp(this);
    }

    public void Update()
    {
        // ReSharper disable once UnusedVariable
        var now = ClockService.Now.TimeOfDay;
    }
}

public interface IClockService
{
    DateTime Now { get; }
}

public class ClockService : IClockService
{
    public DateTime Now => DateTime.Now;
}

internal partial class Composition
{
    public static readonly Composition Shared = new();

    private static void Setup() =>

        DI.Setup()
            .Bind().As(Lifetime.Singleton).To<ClockService>()
            // Creates a builder for each type inherited from MonoBehaviour.
            // These types must be available at this point in the code.
            .Builders<MonoBehaviour>();
}

Running this code sample locally

• Make sure you have the .NET SDK 9.0 or later is installed

dotnet --list-sdk

• Create a net9.0 (or later) console application

dotnet new console -n Sample

• Add reference to NuGet package
  • Pure.DI

dotnet add package Pure.DI

• Copy the example code into the Program.cs file

You are ready to run the example 🚀

dotnet run