Crawling Part 1: The Knockdownening (#36881)

Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>
Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>
Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>
Co-authored-by: Princess Cheeseballs <66055347+Pronana@users.noreply.github.com>
Co-authored-by: ScarKy0 <scarky0@onet.eu>

Content.Client/Stunnable/StunSystem.cs

@@ -1,17 +1,19 @@
-using System.Numerics;
-using Content.Shared.Mobs;
+using System.Numerics;
+using Content.Shared.CombatMode;
+using Content.Shared.Interaction;
 using Content.Shared.Stunnable;
 using Robust.Client.Animations;
 using Robust.Client.GameObjects;
 using Robust.Shared.Animations;
+using Robust.Shared.Input;
+using Robust.Shared.Input.Binding;
 using Robust.Shared.Random;
-using Robust.Shared.Timing;
-using Robust.Shared.Utility;
 
 namespace Content.Client.Stunnable;
 
 public sealed class StunSystem : SharedStunSystem
 {
+    [Dependency] private readonly SharedCombatModeSystem _combat = default!;
     [Dependency] private readonly IRobustRandom _random = default!;
     [Dependency] private readonly SpriteSystem _spriteSystem = default!;
 
@@ -23,6 +25,22 @@ public sealed class StunSystem : SharedStunSystem
 
         SubscribeLocalEvent<StunVisualsComponent, ComponentInit>(OnComponentInit);
         SubscribeLocalEvent<StunVisualsComponent, AppearanceChangeEvent>(OnAppearanceChanged);
+
+        CommandBinds.Builder
+            .BindAfter(EngineKeyFunctions.UseSecondary, new PointerInputCmdHandler(OnUseSecondary, true, true), typeof(SharedInteractionSystem))
+            .Register<StunSystem>();
+    }
+
+    private bool OnUseSecondary(in PointerInputCmdHandler.PointerInputCmdArgs args)
+    {
+        if (args.Session?.AttachedEntity is not {Valid: true} uid)
+            return false;
+
+        if (args.EntityUid != uid || !HasComp<KnockedDownComponent>(uid) || !_combat.IsInCombatMode(uid))
+            return false;
+
+        RaisePredictiveEvent(new ForceStandUpEvent());
+        return true;
     }
 
     /// <summary>