Fix zombie eye appearance (#19427)

Content.Server/Zombies/ZombieSystem.Transform.cs

@@ -133,12 +133,15 @@ namespace Content.Server.Zombies
             {
                 //store some values before changing them in case the humanoid get cloned later
                 zombiecomp.BeforeZombifiedSkinColor = huApComp.SkinColor;
+                zombiecomp.BeforeZombifiedEyeColor = huApComp.EyeColor;
                 zombiecomp.BeforeZombifiedCustomBaseLayers = new(huApComp.CustomBaseLayers);
                 if (TryComp<BloodstreamComponent>(target, out var stream))
                     zombiecomp.BeforeZombifiedBloodReagent = stream.BloodReagent;
 
                 _humanoidAppearance.SetSkinColor(target, zombiecomp.SkinColor, verify: false, humanoid: huApComp);
-                _humanoidAppearance.SetBaseLayerColor(target, HumanoidVisualLayers.Eyes, zombiecomp.EyeColor, humanoid: huApComp);
+
+                // Messing with the eye layer made it vanish upon cloning, and also it didn't even appear right
+                huApComp.EyeColor = zombiecomp.EyeColor;
 
                 // this might not resync on clone?
                 _humanoidAppearance.SetBaseLayerId(target, HumanoidVisualLayers.Tail, zombiecomp.BaseLayerExternal, humanoid: huApComp);

Content.Server/Zombies/ZombieSystem.cs

@@ -20,6 +20,7 @@ using Content.Shared.Zombies;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
 using Robust.Shared.Timing;
+using Content.Shared.Humanoid;
 
 namespace Content.Server.Zombies
 {
@@ -256,7 +257,11 @@ namespace Content.Server.Zombies
                 _humanoidAppearance.SetBaseLayerColor(target, layer, info.Color);
                 _humanoidAppearance.SetBaseLayerId(target, layer, info.ID);
             }
-            _humanoidAppearance.SetSkinColor(target, zombiecomp.BeforeZombifiedSkinColor);
+            if(TryComp<HumanoidAppearanceComponent>(target, out var appcomp))
+            {
+                appcomp.EyeColor = zombiecomp.BeforeZombifiedEyeColor;
+            }
+            _humanoidAppearance.SetSkinColor(target, zombiecomp.BeforeZombifiedSkinColor, false);
             _bloodstream.ChangeBloodReagent(target, zombiecomp.BeforeZombifiedBloodReagent);
 
             _metaData.SetEntityName(target, zombiecomp.BeforeZombifiedEntityName);

Content.Shared/Zombies/ZombieComponent.cs

@@ -80,6 +80,12 @@ public sealed partial class ZombieComponent : Component
     [DataField("beforeZombifiedSkinColor")]
     public Color BeforeZombifiedSkinColor;
 
+    /// <summary>
+    /// The eye color of the humanoid to restore in case of cloning
+    /// </summary>
+    [DataField("beforeZombifiedEyeColor")]
+    public Color BeforeZombifiedEyeColor;
+
     [DataField("emoteId", customTypeSerializer: typeof(PrototypeIdSerializer<EmoteSoundsPrototype>))]
     public string? EmoteSoundsId = "Zombie";