tbd-station-14/Content.Client/GameObjects/Components/Atmos/PipeVisualizer.cs

using System;
using Content.Shared.GameObjects.Components.Atmos;
using JetBrains.Annotations;
using Robust.Client.GameObjects;
using Robust.Client.Interfaces.GameObjects.Components;
using Robust.Shared.Interfaces.GameObjects;

namespace Content.Client.GameObjects.Components.Atmos
{
    [UsedImplicitly]
    public class PipeVisualizer : AppearanceVisualizer
    {
        public override void InitializeEntity(IEntity entity)
        {
            base.InitializeEntity(entity);
            if (!entity.TryGetComponent(out ISpriteComponent sprite)) return;
            sprite.LayerMapReserveBlank(Layer.PipeBase);
            var pipeBaseLayer = sprite.LayerMapGet(Layer.PipeBase);
            sprite.LayerSetVisible(pipeBaseLayer, true);
        }

        public override void OnChangeData(AppearanceComponent component)
        {
            base.OnChangeData(component);
            if (!component.Owner.TryGetComponent(out ISpriteComponent sprite)) return;
            if (!component.TryGetData(PipeVisuals.VisualState, out PipeVisualState pipeVisualState)) return;
            var pipeBase = sprite.LayerMapGet(Layer.PipeBase);
            var pipeBaseStateId = GetPipeBaseStateId(pipeVisualState);
            sprite.LayerSetState(pipeBase, pipeBaseStateId);
        }

        private string GetPipeBaseStateId(PipeVisualState pipeVisualState)
        {
            var stateId = "pipe";
            stateId += pipeVisualState.PipeDirection.PipeDirectionToPipeShape().ToString();
            stateId += (int) pipeVisualState.ConduitLayer;
            return stateId;
        }

        private enum Layer
        {
            PipeBase,
        }
    }
}