Rename docking activities

HarvesterDockSequence -> GenericDockSequence
DeliverResources -> MoveToDock

OpenRA.Mods.Common/Activities/MoveToDock.cs

@@ -0,0 +1,96 @@
+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Linq;
+using OpenRA.Activities;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Activities
+{
+	public class MoveToDock : Activity
+	{
+		readonly IMove movement;
+		readonly Harvester harv;
+		readonly Actor targetActor;
+		readonly INotifyHarvesterAction[] notifyHarvesterActions;
+
+		Actor proc;
+
+		public MoveToDock(Actor self, Actor targetActor = null)
+		{
+			movement = self.Trait<IMove>();
+			harv = self.Trait<Harvester>();
+			this.targetActor = targetActor;
+			notifyHarvesterActions = self.TraitsImplementing<INotifyHarvesterAction>().ToArray();
+		}
+
+		protected override void OnFirstRun(Actor self)
+		{
+			if (targetActor != null && targetActor.IsInWorld)
+				harv.LinkProc(targetActor);
+		}
+
+		public override bool Tick(Actor self)
+		{
+			if (harv.IsTraitDisabled)
+				Cancel(self, true);
+
+			if (IsCanceling)
+				return true;
+
+			// Find the nearest best refinery if not explicitly ordered to a specific refinery:
+			if (harv.LinkedProc == null || !harv.LinkedProc.IsInWorld)
+				harv.ChooseNewProc(self, null);
+
+			// No refineries exist; check again after delay defined in Harvester.
+			if (harv.LinkedProc == null)
+			{
+				QueueChild(new Wait(harv.Info.SearchForDeliveryBuildingDelay));
+				return false;
+			}
+
+			proc = harv.LinkedProc;
+			var iao = proc.Trait<IAcceptResources>();
+
+			if (self.CenterPosition != iao.DeliveryPosition)
+			{
+				foreach (var n in notifyHarvesterActions)
+					n.MovingToRefinery(self, proc);
+
+				var target = Target.FromActor(proc);
+				QueueChild(movement.MoveOntoTarget(self, target, iao.DeliveryPosition - proc.CenterPosition, iao.DeliveryAngle));
+				return false;
+			}
+
+			QueueChild(new Wait(10));
+			iao.OnDock(self, this);
+			return true;
+		}
+
+		public override void Cancel(Actor self, bool keepQueue = false)
+		{
+			foreach (var n in notifyHarvesterActions)
+				n.MovementCancelled(self);
+
+			base.Cancel(self, keepQueue);
+		}
+
+		public override IEnumerable<TargetLineNode> TargetLineNodes(Actor self)
+		{
+			if (proc != null)
+				yield return new TargetLineNode(Target.FromActor(proc), harv.Info.DeliverLineColor);
+			else
+				yield return new TargetLineNode(Target.FromActor(harv.LinkedProc), harv.Info.DeliverLineColor);
+		}
+	}
+}