Cache CanMove (#7480)

Content.Shared/Movement/Components/IMoverComponent.cs

@@ -1,4 +1,4 @@
-using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects;
 using Robust.Shared.Maths;
 
 namespace Content.Shared.Movement.Components
@@ -22,6 +22,12 @@ namespace Content.Shared.Movement.Components
         /// </summary>
         bool Sprinting { get; }
 
+        /// <summary>
+        ///     Can the entity currently move. Avoids having to raise move-attempt events every time a player moves.
+        ///     Note that this value will be overridden by the action blocker system, and shouldn't just be set directly.
+        /// </summary>
+        bool CanMove { get; set; }
+
         Angle LastGridAngle { get; set; }
 
         /// <summary>