RiftMayhem/Assets/Scripts/BuildManager/BuildLibrary.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BuildLibrary : MonoBehaviour
{
    #region Singleton
    private static BuildLibrary _instance;

    // Public reference to the singleton instance
    public static BuildLibrary Instance
    {
        get
        {
            // If the instance doesn't exist, try to find it in the scene
            if (_instance == null)
            {
                _instance = FindObjectOfType<BuildLibrary>();

                // If it's still null, create a new GameObject and add the component
                if (_instance == null)
                {
                    GameObject singletonObject = new GameObject(typeof(BuildLibrary).Name);
                    _instance = singletonObject.AddComponent<BuildLibrary>();
                }
            }
            return _instance;
        }
    }
    #endregion

    public List<ClassBuildLibrary> classBuildLibraries = new List<ClassBuildLibrary>();

    public List<BaseAbility> GetBaseAbilities(GameTag characterClass)
    {
        for (int i = 0; i < classBuildLibraries.Count; i++)
        {
            if (classBuildLibraries[i].characterClass == characterClass)
                return classBuildLibraries[i].possibleClassAbilities;
        }
        return null;
    }
}