Migrate ProvidesRadar to conditions and remove JamsRadar.

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

@@ -0,0 +1,60 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2017 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 OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Applies a condition to the actor when it is disabled.",
+		"This is a temporary shim to help migration away from the legacy IDisable code")]
+	public class GrantConditionOnDisabledInfo : ITraitInfo, Requires<HealthInfo>
+	{
+		[FieldLoader.Require]
+		[GrantedConditionReference]
+		[Desc("Condition to grant.")]
+		public readonly string Condition = null;
+
+		public object Create(ActorInitializer init) { return new GrantConditionOnDisabled(this); }
+	}
+
+	public class GrantConditionOnDisabled : INotifyCreated, ITick
+	{
+		readonly GrantConditionOnDisabledInfo info;
+
+		ConditionManager conditionManager;
+		int conditionToken = ConditionManager.InvalidConditionToken;
+
+		public GrantConditionOnDisabled(GrantConditionOnDisabledInfo info)
+		{
+			this.info = info;
+		}
+
+		void INotifyCreated.Created(Actor self)
+		{
+			conditionManager = self.TraitOrDefault<ConditionManager>();
+
+			// Set initial disabled state
+			Tick(self);
+		}
+
+		public void Tick(Actor self)
+		{
+			if (conditionManager == null)
+				return;
+
+			var disabled = self.IsDisabled();
+			if (disabled && conditionToken == ConditionManager.InvalidConditionToken)
+				conditionToken = conditionManager.GrantCondition(self, info.Condition);
+			else if (!disabled && conditionToken != ConditionManager.InvalidConditionToken)
+				conditionToken = conditionManager.RevokeCondition(self, conditionToken);
+		}
+	}
+}