ninja 2 electric boogaloo (#15534)

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Shared/Ninja/Systems/SharedSpaceNinjaSystem.cs

@@ -0,0 +1,89 @@
+using Content.Shared.Clothing.Components;
+using Content.Shared.Ninja.Components;
+using Content.Shared.Weapons.Melee.Events;
+using Content.Shared.Weapons.Ranged.Events;
+using Content.Shared.Popups;
+
+namespace Content.Shared.Ninja.Systems;
+
+/// <summary>
+/// Provides shared ninja API, handles being attacked revealing ninja and stops guns from shooting.
+/// </summary>
+public abstract class SharedSpaceNinjaSystem : EntitySystem
+{
+    [Dependency] protected readonly SharedNinjaSuitSystem _suit = default!;
+    [Dependency] protected readonly SharedPopupSystem _popup = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<SpaceNinjaComponent, AttackedEvent>(OnNinjaAttacked);
+        SubscribeLocalEvent<SpaceNinjaComponent, ShotAttemptedEvent>(OnShotAttempted);
+    }
+
+    /// <summary>
+    /// Set the ninja's worn suit entity
+    /// </summary>
+    public void AssignSuit(EntityUid uid, EntityUid? suit, SpaceNinjaComponent? comp = null)
+    {
+        if (!Resolve(uid, ref comp) || comp.Suit == suit)
+            return;
+
+        comp.Suit = suit;
+        Dirty(uid, comp);
+    }
+
+    /// <summary>
+    /// Set the ninja's worn gloves entity
+    /// </summary>
+    public void AssignGloves(EntityUid uid, EntityUid? gloves, SpaceNinjaComponent? comp = null)
+    {
+        if (!Resolve(uid, ref comp) || comp.Gloves == gloves)
+            return;
+
+        comp.Gloves = gloves;
+        Dirty(uid, comp);
+    }
+
+    /// <summary>
+    /// Bind a katana entity to a ninja, letting it be recalled and dash.
+    /// </summary>
+    public void BindKatana(EntityUid uid, EntityUid? katana, SpaceNinjaComponent? comp = null)
+    {
+        if (!Resolve(uid, ref comp) || comp.Katana == katana)
+            return;
+
+        comp.Katana = katana;
+        Dirty(uid, comp);
+    }
+
+    /// <summary>
+    /// Gets the user's battery and tries to use some charge from it, returning true if successful.
+    /// Serverside only.
+    /// </summary>
+    public virtual bool TryUseCharge(EntityUid user, float charge)
+    {
+        return false;
+    }
+
+    /// <summary>
+    /// Handle revealing ninja if cloaked when attacked.
+    /// </summary>
+    private void OnNinjaAttacked(EntityUid uid, SpaceNinjaComponent comp, AttackedEvent args)
+    {
+        if (comp.Suit != null && TryComp<StealthClothingComponent>(comp.Suit, out var stealthClothing) && stealthClothing.Enabled)
+        {
+            _suit.RevealNinja(comp.Suit.Value, uid, null, stealthClothing);
+        }
+    }
+
+    /// <summary>
+    /// Require ninja to fight with HONOR, no guns!
+    /// </summary>
+    private void OnShotAttempted(EntityUid uid, SpaceNinjaComponent comp, ref ShotAttemptedEvent args)
+    {
+        _popup.PopupClient(Loc.GetString("gun-disabled"), uid, uid);
+        args.Cancel();
+    }
+}