tbd-station-14/Content.Client/Zombies/ZombieSystem.cs

using System.Linq;
using Content.Client.Antag;
using Content.Shared.Humanoid;
using Content.Shared.StatusIcon.Components;
using Content.Shared.Zombies;
using Robust.Client.GameObjects;

namespace Content.Client.Zombies;

public sealed class ZombieSystem : AntagStatusIconSystem<ZombieComponent>
{

    public override void Initialize()
    {
        base.Initialize();

        SubscribeLocalEvent<ZombieComponent, ComponentStartup>(OnStartup);
        SubscribeLocalEvent<ZombieComponent, GetStatusIconsEvent>(OnGetStatusIcon);
    }

    private void OnStartup(EntityUid uid, ZombieComponent component, ComponentStartup args)
    {
        if (HasComp<HumanoidAppearanceComponent>(uid))
            return;

        if (!TryComp<SpriteComponent>(uid, out var sprite))
            return;

        for (var i = 0; i < sprite.AllLayers.Count(); i++)
        {
            sprite.LayerSetColor(i, component.SkinColor);
        }
    }

    private void OnGetStatusIcon(EntityUid uid, ZombieComponent component, ref GetStatusIconsEvent args)
    {
        GetStatusIcon(component.ZombieStatusIcon, ref args);
    }
}