Zombie Mode [New Game Mode] (#8501)

Co-authored-by: Kara <lunarautomaton6@gmail.com>
Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/CCVar/CCVars.cs

@@ -299,6 +299,19 @@ namespace Content.Shared.CCVar
         public static readonly CVarDef<int> NukeopsPlayersPerOp =
             CVarDef.Create("nukeops.players_per_op", 5);
 
+        /*
+         * Zombie
+         */
+
+        public static readonly CVarDef<int> ZombieMinPlayers =
+            CVarDef.Create("zombie.min_players", 20);
+
+        public static readonly CVarDef<int> ZombieMaxInitialInfected =
+            CVarDef.Create("zombie.max_initial_infected", 6);
+
+        public static readonly CVarDef<int> ZombiePlayersPerInfected =
+            CVarDef.Create("zombie.players_per_infected", 10);
+
         /*
          * Pirates
          */

Content.Shared/Inventory/InventorySystem.Equip.cs

@@ -25,7 +25,6 @@ public abstract partial class InventorySystem
     [Dependency] private readonly MovementSpeedModifierSystem _movementSpeed = default!;
     [Dependency] private readonly SharedInteractionSystem _interactionSystem = default!;
     [Dependency] private readonly SharedContainerSystem _containerSystem = default!;
-    [Dependency] private readonly ActionBlockerSystem _actionBlockerSystem = default!;
     [Dependency] private readonly SharedHandsSystem _handsSystem = default!;
     [Dependency] private readonly IGameTiming _gameTiming = default!;
     [Dependency] private readonly INetManager _netMan = default!;

Content.Shared/Zombies/ZombieEvents.cs

@@ -0,0 +1,25 @@
+using Content.Shared.Actions;
+
+namespace Content.Shared.Zombies;
+
+/// <summary>
+///     Event that is broadcast whenever an entity is zombified.
+///     Used by the zombie gamemode to track total infections.
+/// </summary>
+public readonly struct EntityZombifiedEvent
+{
+    /// <summary>
+    ///     The entity that was zombified.
+    /// </summary>
+    public readonly EntityUid Target;
+
+    public EntityZombifiedEvent(EntityUid target)
+    {
+        Target = target;
+    }
+};
+
+/// <summary>
+///     Event raised when a player zombifies themself using the "turn" action
+/// </summary>
+public sealed class ZombifySelfActionEvent : InstantActionEvent { };