Add BreakOnDistance to DoAfterEventArgs (#8902)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/DoAfter/DoAfter.cs

@@ -162,6 +162,30 @@ namespace Content.Server.DoAfter
                 }
             }
 
+            if (EventArgs.DistanceThreshold != null)
+            {
+                var xformQuery = entityManager.GetEntityQuery<TransformComponent>();
+                TransformComponent? userXform = null;
+
+                // Check user distance to target AND used entities.
+                if (EventArgs.Target != null && !EventArgs.User.Equals(EventArgs.Target))
+                {
+                    //recalculate Target location in case Target has also moved
+                    var targetCoordinates = xformQuery.GetComponent(EventArgs.Target.Value).Coordinates;
+                    userXform ??= xformQuery.GetComponent(EventArgs.User);
+                    if (userXform.Coordinates.InRange(entityManager, targetCoordinates, EventArgs.DistanceThreshold.Value))
+                        return true;
+                }
+
+                if (EventArgs.Used != null)
+                {
+                    var targetCoordinates = xformQuery.GetComponent(EventArgs.Used.Value).Coordinates;
+                    userXform ??= xformQuery.GetComponent(EventArgs.User);
+                    if (!userXform.Coordinates.InRange(entityManager, targetCoordinates, EventArgs.DistanceThreshold.Value))
+                        return true;
+                }
+            }
+
             return false;
         }
 

Content.Server/DoAfter/DoAfterEventArgs.cs

@@ -20,6 +20,11 @@ namespace Content.Server.DoAfter
         /// </summary>
         public EntityUid? Target { get; }
 
+        /// <summary>
+        ///     Entity used by the User on the Target.
+        /// </summary>
+        public EntityUid? Used { get; set; }
+
         /// <summary>
         ///     Manually cancel the do_after so it no longer runs
         /// </summary>
@@ -55,6 +60,11 @@ namespace Content.Server.DoAfter
         public FixedPoint2 DamageThreshold { get; set; }
         public bool BreakOnStun { get; set; }
 
+        /// <summary>
+        ///     Threshold for distance user from the used OR target entities.
+        /// </summary>
+        public float? DistanceThreshold { get; set; }
+
         /// <summary>
         ///     Requires a function call once at the end (like InRangeUnobstructed).
         /// </summary>
@@ -102,12 +112,14 @@ namespace Content.Server.DoAfter
             EntityUid user,
             float delay,
             CancellationToken cancelToken = default,
-            EntityUid? target = null)
+            EntityUid? target = null,
+            EntityUid? used = null)
         {
             User = user;
             Delay = delay;
             CancelToken = cancelToken;
             Target = target;
+            Used = used;
             MovementThreshold = 0.1f;
             DamageThreshold = 1.0;
 

Content.Server/Nutrition/EntitySystems/FoodSystem.cs

@@ -126,13 +126,14 @@ namespace Content.Server.Nutrition.EntitySystems
 
             var moveBreak = user != target;
 
-            _doAfterSystem.DoAfter(new DoAfterEventArgs(user, forceFeed ? food.ForceFeedDelay : food.Delay, food.CancelToken.Token, target)
+            _doAfterSystem.DoAfter(new DoAfterEventArgs(user, forceFeed ? food.ForceFeedDelay : food.Delay, food.CancelToken.Token, target, food.Owner)
             {
                 BreakOnUserMove = moveBreak,
                 BreakOnDamage = true,
                 BreakOnStun = true,
                 BreakOnTargetMove = moveBreak,
                 MovementThreshold = 0.01f,
+                DistanceThreshold = 2.0f,
                 TargetFinishedEvent = new FeedEvent(user, food, foodSolution, utensils),
                 BroadcastCancelledEvent = new ForceFeedCancelledEvent(food),
                 NeedHand = true,