Move Enter and Repair Building activities, EngineerRepair trait and ActorExts to Mods.Common and extract IgnoresDisguise trait to its own file

OpenRA.Mods.Common/ActorExts.cs

@@ -0,0 +1,81 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * 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. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System.Drawing;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common
+{
+	public static class ActorExts
+	{
+		public static bool AppearsFriendlyTo(this Actor self, Actor toActor)
+		{
+			var stance = toActor.Owner.Stances[self.Owner];
+			if (stance == Stance.Ally)
+				return true;
+
+			if (self.EffectiveOwner != null && self.EffectiveOwner.Disguised && !toActor.HasTrait<IgnoresDisguise>())
+				return toActor.Owner.Stances[self.EffectiveOwner.Owner] == Stance.Ally;
+
+			return stance == Stance.Ally;
+		}
+
+		public static bool AppearsHostileTo(this Actor self, Actor toActor)
+		{
+			var stance = toActor.Owner.Stances[self.Owner];
+			if (stance == Stance.Ally)
+				return false;		/* otherwise, we'll hate friendly disguised spies */
+
+			if (self.EffectiveOwner != null && self.EffectiveOwner.Disguised && !toActor.HasTrait<IgnoresDisguise>())
+				return toActor.Owner.Stances[self.EffectiveOwner.Owner] == Stance.Enemy;
+
+			return stance == Stance.Enemy;
+		}
+
+		public static Target ResolveFrozenActorOrder(this Actor self, Order order, Color targetLine)
+		{
+			// Not targeting a frozen actor
+			if (order.ExtraData == 0)
+				return Target.FromOrder(self.World, order);
+
+			// Targeted an actor under the fog
+			var frozenLayer = self.Owner.PlayerActor.TraitOrDefault<FrozenActorLayer>();
+			if (frozenLayer == null)
+				return Target.Invalid;
+
+			var frozen = frozenLayer.FromID(order.ExtraData);
+			if (frozen == null)
+				return Target.Invalid;
+
+			// Flashes the frozen proxy
+			self.SetTargetLine(frozen, targetLine, true);
+
+			// Target is still alive - resolve the real order
+			if (frozen.Actor != null && frozen.Actor.IsInWorld)
+				return Target.FromActor(frozen.Actor);
+
+			if (!order.Queued)
+				self.CancelActivity();
+
+			var move = self.TraitOrDefault<IMove>();
+			if (move != null)
+			{
+				// Move within sight range of the frozen actor
+				var sight = self.TraitOrDefault<RevealsShroud>();
+				var range = sight != null ? sight.Range : WRange.FromCells(2);
+
+				self.QueueActivity(move.MoveWithinRange(Target.FromPos(frozen.CenterPosition), range));
+			}
+
+			return Target.Invalid;
+		}
+	}
+}