Add IMove.EstimatedMoveDuration.

OpenRA.Mods.Cnc/Traits/TDGunboat.cs

@@ -191,6 +191,11 @@ namespace OpenRA.Mods.Cnc.Traits
 		public Activity MoveIntoTarget(Actor self, Target target) { return null; }
 		public Activity VisualMove(Actor self, WPos fromPos, WPos toPos) { return null; }
 
+		public int EstimatedMoveDuration(Actor self, WPos fromPos, WPos toPos)
+		{
+			return (toPos - fromPos).Length / Info.Speed;
+		}
+
 		public CPos NearestMoveableCell(CPos cell) { return cell; }
 
 		// Actors with TDGunboat always move

OpenRA.Mods.Common/Traits/Air/Aircraft.cs

@@ -624,6 +624,12 @@ namespace OpenRA.Mods.Common.Traits
 				new HeliFly(self, Target.FromPos(toPos)));
 		}
 
+		public int EstimatedMoveDuration(Actor self, WPos fromPos, WPos toPos)
+		{
+			var speed = MovementSpeed;
+			return speed > 0 ? (toPos - fromPos).Length / speed : 0;
+		}
+
 		public CPos NearestMoveableCell(CPos cell) { return cell; }
 
 		public bool IsMoving { get { return isMoving; } set { } }

OpenRA.Mods.Common/Traits/Mobile.cs

@@ -465,6 +465,12 @@ namespace OpenRA.Mods.Common.Traits
 			return VisualMove(self, fromPos, toPos, self.Location);
 		}
 
+		public int EstimatedMoveDuration(Actor self, WPos fromPos, WPos toPos)
+		{
+			var speed = MovementSpeedForCell(self, self.Location);
+			return speed > 0 ? (toPos - fromPos).Length / speed : 0;
+		}
+
 		public CPos NearestMoveableCell(CPos target)
 		{
 			// Limit search to a radius of 10 tiles

OpenRA.Mods.Common/TraitsInterfaces.cs

@@ -399,6 +399,7 @@ namespace OpenRA.Mods.Common.Traits
 		Activity MoveToTarget(Actor self, Target target);
 		Activity MoveIntoTarget(Actor self, Target target);
 		Activity VisualMove(Actor self, WPos fromPos, WPos toPos);
+		int EstimatedMoveDuration(Actor self, WPos fromPos, WPos toPos);
 		CPos NearestMoveableCell(CPos target);
 		bool IsMoving { get; set; }
 		bool IsMovingVertically { get; set; }