remove a bunch of instances of component reference (#13164)

Content.Shared/CartridgeLoader/CartridgeLoaderComponent.cs

@@ -0,0 +1,47 @@
+using Content.Shared.Containers.ItemSlots;
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization.TypeSerializers.Implementations;
+
+namespace Content.Shared.CartridgeLoader;
+
+[RegisterComponent, NetworkedComponent]
+public sealed class CartridgeLoaderComponent : Component
+{
+    public const string CartridgeSlotId = "Cartridge-Slot";
+
+    [DataField("cartridgeSlot")]
+    public ItemSlot CartridgeSlot = new();
+
+    /// <summary>
+    /// List of programs that come preinstalled with this cartridge loader
+    /// </summary>
+    [DataField("preinstalled")]
+    public List<string> PreinstalledPrograms = new();
+
+    /// <summary>
+    /// The currently running program that has its ui showing
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)]
+    public EntityUid? ActiveProgram = default;
+
+    /// <summary>
+    /// The list of programs running in the background, listening to certain events
+    /// </summary>
+    [ViewVariables]
+    public readonly List<EntityUid> BackgroundPrograms = new();
+
+    /// <summary>
+    /// The list of program entities that are spawned into the cartridge loaders program container
+    /// </summary>
+    [DataField("installedCartridges")]
+    public List<EntityUid> InstalledPrograms = new();
+
+    /// <summary>
+    /// The maximum amount of programs that can be installed on the cartridge loader entity
+    /// </summary>
+    [DataField("diskSpace")]
+    public int DiskSpace = 5;
+
+    [DataField("uiKey", readOnly: true, required: true, customTypeSerializer: typeof(EnumSerializer))]
+    public Enum UiKey = default!;
+}