From ab1a798d04f7eb0c69583184eb79d57492da5b52 Mon Sep 17 00:00:00 2001
From: Paul Chote <pchote@users.noreply.github.com>
Date: Sat, 17 Jun 2017 11:29:59 +0000
Subject: [PATCH] Add GrantConditionOnBotOwner trait.

---
 OpenRA.Mods.Common/OpenRA.Mods.Common.csproj  |  1 +
 .../Conditions/GrantConditionOnBotOwner.cs    | 64 +++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 OpenRA.Mods.Common/Traits/Conditions/GrantConditionOnBotOwner.cs

diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 803ae9d383..1d4eae49c6 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -815,6 +815,7 @@
     <Compile Include="Widgets\Logic\Ingame\StanceSelectorLogic.cs" />
     <Compile Include="Widgets\Logic\ButtonTooltipWithDescHighlightLogic.cs" />
     <Compile Include="Traits\AutoTargetPriority.cs" />
+    <Compile Include="Traits\Conditions\GrantConditionOnBotOwner.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Target Name="AfterBuild">
diff --git a/OpenRA.Mods.Common/Traits/Conditions/GrantConditionOnBotOwner.cs b/OpenRA.Mods.Common/Traits/Conditions/GrantConditionOnBotOwner.cs
new file mode 100644
index 0000000000..ebf7036040
--- /dev/null
+++ b/OpenRA.Mods.Common/Traits/Conditions/GrantConditionOnBotOwner.cs
@@ -0,0 +1,64 @@
+#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 System.Collections.Generic;
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Grants a condition to this actor when it is owned by an AI bot.")]
+	public class GrantConditionOnBotOwnerInfo : ITraitInfo
+	{
+		[FieldLoader.Require]
+		[GrantedConditionReference]
+		[Desc("Condition to grant.")]
+		public readonly string Condition = null;
+
+		[FieldLoader.Require]
+		[Desc("Bot types that trigger the condition.")]
+		public readonly string[] Bots = { };
+
+		public object Create(ActorInitializer init) { return new GrantConditionOnBotOwner(init, this); }
+	}
+
+	public class GrantConditionOnBotOwner : INotifyCreated, INotifyOwnerChanged
+	{
+		readonly GrantConditionOnBotOwnerInfo info;
+
+		ConditionManager conditionManager;
+		int conditionToken = ConditionManager.InvalidConditionToken;
+
+		public GrantConditionOnBotOwner(ActorInitializer init, GrantConditionOnBotOwnerInfo info)
+		{
+			this.info = info;
+		}
+
+		void INotifyCreated.Created(Actor self)
+		{
+			conditionManager = self.TraitOrDefault<ConditionManager>();
+			if (conditionManager != null && self.Owner.IsBot && info.Bots.Contains(self.Owner.BotType))
+				conditionToken = conditionManager.GrantCondition(self, info.Condition);
+		}
+
+		void INotifyOwnerChanged.OnOwnerChanged(Actor self, Player oldOwner, Player newOwner)
+		{
+			if (conditionManager == null)
+				return;
+
+			if (conditionToken != ConditionManager.InvalidConditionToken)
+				conditionToken = conditionManager.RevokeCondition(self, conditionToken);
+
+			if (info.Bots.Contains(newOwner.BotType))
+				conditionToken = conditionManager.GrantCondition(self, info.Condition);
+		}
+	}
+}