tbd-station-14/Content.Client/GameObjects/Components/Research/TechnologyDatabaseComponent.cs

using System;
using Content.Shared.GameObjects.Components.Research;
using Content.Shared.Research;
using Robust.Shared.GameObjects;
using Robust.Shared.IoC;
using Robust.Shared.Prototypes;
using SixLabors.ImageSharp.Processing;

namespace Content.Client.GameObjects.Components.Research
{
    [RegisterComponent]
    public class TechnologyDatabaseComponent : SharedTechnologyDatabaseComponent
    {
        /// <summary>
        ///     Event called when the database is updated.
        /// </summary>
        public event Action OnDatabaseUpdated;

        public override void HandleComponentState(ComponentState curState, ComponentState nextState)
        {
            base.HandleComponentState(curState, nextState);
            if (!(curState is TechnologyDatabaseState state)) return;
            _technologies.Clear();
            var protoManager = IoCManager.Resolve<IPrototypeManager>();
            foreach (var techID in state.Technologies)
            {
                if (!protoManager.TryIndex(techID, out TechnologyPrototype technology)) continue;
                _technologies.Add(technology);
            }

            OnDatabaseUpdated?.Invoke();

        }
    }
}