Vehicles (#7336)

Content.Client/Buckle/BuckleComponent.cs

@@ -1,8 +1,7 @@
 using Content.Shared.ActionBlocker;
 using Content.Shared.Buckle.Components;
+using Content.Shared.Vehicle.Components;
 using Robust.Client.GameObjects;
-using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
 
 namespace Content.Client.Buckle
 {
@@ -42,6 +41,11 @@ namespace Content.Client.Buckle
                 return;
             }
 
+            if (!_entMan.TryGetComponent(Owner, out RiderComponent? rider))
+            {
+                return;
+            }
+
             if (_buckled && buckle.DrawDepth.HasValue)
             {
                 _originalDrawDepth ??= ownerSprite.DrawDepth;

Content.Client/Vehicle/VehicleSystem.cs

@@ -0,0 +1,32 @@
+using Robust.Client.GameObjects;
+using Content.Shared.Vehicle;
+
+namespace Content.Client.Vehicle
+{
+    /// <summary>
+    /// Controls client-side visuals for
+    /// vehicles
+    /// </summary>
+    public sealed class VehicleSystem : VisualizerSystem<VehicleVisualsComponent>
+    {
+        protected override void OnAppearanceChange(EntityUid uid, VehicleVisualsComponent component, ref AppearanceChangeEvent args)
+        {
+            /// First check is for the sprite itself
+            if (TryComp(uid, out SpriteComponent? sprite)
+                && args.Component.TryGetData(VehicleVisuals.DrawDepth, out int drawDepth) && sprite != null)
+            {
+                sprite.DrawDepth = drawDepth;
+            }
+            /// Set vehicle layer to animated or not (i.e. are the wheels turning or not)
+            if (args.Component.TryGetData(VehicleVisuals.AutoAnimate, out bool autoAnimate))
+            {
+                sprite?.LayerSetAutoAnimated(VehicleVisualLayers.AutoAnimate, autoAnimate);
+            }
+        }
+    }
+}
+public enum VehicleVisualLayers : byte
+{
+    /// Layer for the vehicle's wheels
+    AutoAnimate,
+}

Content.Client/Vehicle/VehicleVisualsComponent.cs

@@ -0,0 +1,10 @@
+namespace Content.Client.Vehicle;
+
+/// <summary>
+/// Controls visuals for vehicles
+/// </summary>
+[RegisterComponent]
+public sealed class VehicleVisualsComponent : Component
+{
+    public int DrawDepth = 0;
+}