fix zombie mispredicts (#11043)

Content.Client/Zombies/ZombieSystem.cs

@@ -0,0 +1,8 @@
+using Content.Shared.Zombies;
+
+namespace Content.Client.Zombies;
+
+public sealed class ZombieSystem : SharedZombieSystem
+{
+
+}

Content.Server/Zombies/ZombieSystem.cs

@@ -13,12 +13,12 @@ using Content.Server.Inventory;
 using Robust.Shared.Prototypes;
 using Content.Server.Speech;
 using Content.Server.Chat.Systems;
-using Content.Shared.Movement.Systems;
 using Content.Shared.Damage;
+using Content.Shared.Zombies;
 
 namespace Content.Server.Zombies
 {
-    public sealed class ZombieSystem : EntitySystem
+    public sealed class ZombieSystem : SharedZombieSystem
     {
         [Dependency] private readonly DiseaseSystem _disease = default!;
         [Dependency] private readonly BloodstreamSystem _bloodstream = default!;
@@ -36,7 +36,7 @@ namespace Content.Server.Zombies
             SubscribeLocalEvent<ZombieComponent, MeleeHitEvent>(OnMeleeHit);
             SubscribeLocalEvent<ZombieComponent, MobStateChangedEvent>(OnMobState);
             SubscribeLocalEvent<ActiveZombieComponent, DamageChangedEvent>(OnDamage);
-            SubscribeLocalEvent<ZombieComponent, RefreshMovementSpeedModifiersEvent>(OnRefreshSpeed);
+
         }
 
         private void OnMobState(EntityUid uid, ZombieComponent component, MobStateChangedEvent args)
@@ -53,12 +53,6 @@ namespace Content.Server.Zombies
                 DoGroan(uid, component);
         }
 
-        private void OnRefreshSpeed(EntityUid uid, ZombieComponent component, RefreshMovementSpeedModifiersEvent args)
-        {
-            var mod = component.ZombieMovementSpeedDebuff;
-            args.ModifySpeed(mod, mod);
-        }
-
         private float GetZombieInfectionChance(EntityUid uid, ZombieComponent component)
         {
             var baseChance = component.MaxZombieInfectionChance;

Content.Shared/Zombies/SharedZombieSystem.cs

@@ -0,0 +1,20 @@
+using Content.Shared.Movement.Systems;
+
+namespace Content.Shared.Zombies;
+
+public abstract class SharedZombieSystem : EntitySystem
+{
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<ZombieComponent, RefreshMovementSpeedModifiersEvent>(OnRefreshSpeed);
+    }
+
+    private void OnRefreshSpeed(EntityUid uid, ZombieComponent component, RefreshMovementSpeedModifiersEvent args)
+    {
+        var mod = component.ZombieMovementSpeedDebuff;
+        args.ModifySpeed(mod, mod);
+    }
+}

Content.Shared/Zombies/ZombieComponent.cs

@@ -1,10 +1,11 @@
 using Content.Shared.Roles;
 using Content.Shared.Weapons.Melee;
+using Robust.Shared.GameStates;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
 
-namespace Content.Server.Zombies
+namespace Content.Shared.Zombies
 {
-    [RegisterComponent]
+    [RegisterComponent, NetworkedComponent]
     public sealed class ZombieComponent : Component
     {
         /// <summary>