Re-organize all projects (#4166)

Content.Shared/Interaction/IInteractHand.cs

@@ -0,0 +1,56 @@
+using System;
+using JetBrains.Annotations;
+using Robust.Shared.Analyzers;
+using Robust.Shared.GameObjects;
+
+namespace Content.Shared.Interaction
+{
+    /// <summary>
+    /// This interface gives components behavior when being clicked on by a user with an empty hand
+    /// who is in range and has unobstructed reach of the target entity (allows inside blockers).
+    /// </summary>
+    [RequiresExplicitImplementation]
+    public interface IInteractHand
+    {
+        /// <summary>
+        /// Called when a player directly interacts with an empty hand when user is in range of the target entity.
+        /// </summary>
+        [Obsolete("Use InteractHandEvent instead")]
+        bool InteractHand(InteractHandEventArgs eventArgs);
+    }
+
+    public class InteractHandEventArgs : EventArgs, ITargetedInteractEventArgs
+    {
+        public InteractHandEventArgs(IEntity user, IEntity target)
+        {
+            User = user;
+            Target = target;
+        }
+
+        public IEntity User { get; }
+        public IEntity Target { get; }
+    }
+
+    /// <summary>
+    ///     Raised directed on a target entity when it is interacted with by a user with an empty hand.
+    /// </summary>
+    [PublicAPI]
+    public class InteractHandEvent : HandledEntityEventArgs
+    {
+        /// <summary>
+        ///     Entity that triggered the interaction.
+        /// </summary>
+        public IEntity User { get; }
+
+        /// <summary>
+        ///     Entity that was interacted on.
+        /// </summary>
+        public IEntity Target { get; }
+
+        public InteractHandEvent(IEntity user, IEntity target)
+        {
+            User = user;
+            Target = target;
+        }
+    }
+}