Renamed Upgrades directory to Conditions.

OpenRA.Mods.Common/Traits/Conditions/GrantConditionOnMovement.cs

@@ -0,0 +1,62 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 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, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	public class GrantConditionOnMovementInfo : ConditionalTraitInfo, Requires<IMoveInfo>
+	{
+		[FieldLoader.Require]
+		[GrantedConditionReference]
+		[Desc("Condition to grant.")]
+		public readonly string Condition = null;
+
+		[Desc("Apply condition on straight vertical movement as well.")]
+		public readonly bool ConsiderVerticalMovement = false;
+
+		public override object Create(ActorInitializer init) { return new GrantConditionOnMovement(init.Self, this); }
+	}
+
+	public class GrantConditionOnMovement : ConditionalTrait<GrantConditionOnMovementInfo>, ITick
+	{
+		readonly IMove movement;
+
+		ConditionManager conditionManager;
+		int conditionToken = ConditionManager.InvalidConditionToken;
+
+		public GrantConditionOnMovement(Actor self, GrantConditionOnMovementInfo info)
+			: base(info)
+		{
+			movement = self.Trait<IMove>();
+		}
+
+		protected override void Created(Actor self)
+		{
+			conditionManager = self.TraitOrDefault<ConditionManager>();
+			base.Created(self);
+		}
+
+		void ITick.Tick(Actor self)
+		{
+			if (conditionManager == null)
+				return;
+
+			var isMovingVertically = Info.ConsiderVerticalMovement ? movement.IsMovingVertically : false;
+			var isMoving = !IsTraitDisabled && !self.IsDead && (movement.IsMoving || isMovingVertically);
+			if (isMoving && conditionToken == ConditionManager.InvalidConditionToken)
+				conditionToken = conditionManager.GrantCondition(self, Info.Condition);
+			else if (!isMoving && conditionToken != ConditionManager.InvalidConditionToken)
+				conditionToken = conditionManager.RevokeCondition(self, conditionToken);
+		}
+	}
+}