Avoid creating multiple objects and instead reference one?

Unity Engine
1

In my project, I have a bunch of value objects that look like this:

public class ObjectState : System.Object
{
    private readonly DirectionOption direction;

    private readonly  Feature feature;

    private readonly RotationOption rotation;

    // access properties
}

In my code, I create instances of this class, but I would like to avoid having to create new instances everywhere and instead reference one instance per combination of Direction, Feature and Rotation. How do I do that properly?

My solution looks like this:

    private static TileStateEnabler dummy = null;
    private static Dictionary<int, TileStateEnabler> referenceSet = null;

    public static TileStateEnabler Get(DirectionOption direction, Feature feature, RotationOption rotation)
    {
        if (dummy == null)
        {
            dummy = new TileStateEnabler(direction, feature, rotation);
        }
        else
        {
            dummy.Direction = direction;
            dummy.Feature = feature;
            dummy.Rotation = rotation;
        }

        int hashcode = dummy.GetHashCode();

        if (referenceSet.ContainsKey(hashcode))
        {
            return referenceSet[hashcode];
        } else
        {
            var enabler = new TileStateEnabler(direction, feature, rotation);
            referenceSet.Add(hashcode, enabler);
            return enabler;
        }
    }

Are there better solutions? I don’t like the dummy and the set being static because they stick around even after not needing them anymore.

2

Create a manager class where you can keep your Dictionary <int, prefabObject>().
Your prefab object has the script with your var ‘DirectionOption direction, Feature feature, RotationOption rotation’.
At the end you can have only one copy of your manager or just use Singleton, but is static.

You can make whatever you want in your manager class. Even you can delete the object who’s holding this.