From 24f9ff0ac25f85a76fcb9b449b7bd0cc43d0e825 Mon Sep 17 00:00:00 2001
From: abcdefg30 <alphabet@streber24.de>
Date: Fri, 1 Jun 2018 21:16:47 +0200
Subject: [PATCH] Add a 'ReplaceRequiresPower' update rule

---
 OpenRA.Mods.Common/OpenRA.Mods.Common.csproj  |  1 +
 .../UpdateRules/Rules/ReplaceRequiresPower.cs | 49 +++++++++++++++++++
 OpenRA.Mods.Common/UpdateRules/UpdatePath.cs  |  3 +-
 3 files changed, 52 insertions(+), 1 deletion(-)
 create mode 100644 OpenRA.Mods.Common/UpdateRules/Rules/ReplaceRequiresPower.cs

diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index e92d3de7ad..03d2ed1e13 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -595,6 +595,7 @@
     <Compile Include="UpdateRules\Rules\RemoveOutOfAmmo.cs" />
     <Compile Include="UpdateRules\Rules\RemovePlayerPaletteTileset.cs" />
     <Compile Include="UpdateRules\Rules\RenameWithTurreted.cs" />
+    <Compile Include="UpdateRules\Rules\ReplaceRequiresPower.cs" />
     <Compile Include="UpdateRules\Rules\ScaleModHealth.cs" />
     <Compile Include="UpdateRules\Rules\ScaleModHealthBy10.cs" />
     <Compile Include="UpdateRules\Rules\ScaleModHealthBy100.cs" />
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/ReplaceRequiresPower.cs b/OpenRA.Mods.Common/UpdateRules/Rules/ReplaceRequiresPower.cs
new file mode 100644
index 0000000000..85edc99281
--- /dev/null
+++ b/OpenRA.Mods.Common/UpdateRules/Rules/ReplaceRequiresPower.cs
@@ -0,0 +1,49 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2018 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;
+
+namespace OpenRA.Mods.Common.UpdateRules.Rules
+{
+	public class ReplaceRequiresPower : UpdateRule
+	{
+		public override string Name { get { return "Replace 'RequiresPower' with 'GrantConditionOnPowerState'"; } }
+		public override string Description
+		{
+			get
+			{
+				return "'RequiresPower' has been replaced with 'GrantConditionOnPowerState' which\n" +
+					"toggles a condition depending on the power state.\nPossible PowerStates are: Normal " +
+					"(0 or positive), Low (negative but higher than\n50% of required power) and Critical (below Low).";
+			}
+		}
+
+		bool displayed;
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			var requiresPower = actorNode.LastChildMatching("RequiresPower");
+			if (requiresPower == null)
+				yield break;
+
+			requiresPower.RenameKey("GrantConditionOnPowerState@LOWPOWER", false);
+			requiresPower.AddNode("Condition", "lowpower");
+			requiresPower.AddNode("ValidPowerStates", "Low, Critical");
+
+			if (!displayed)
+			{
+				displayed = true;
+				yield return "'RequiresPower' was renamed to 'GrantConditionOnPowerState'.\n" +
+					"You might need to review your condition setup.";
+			}
+		}
+	}
+}
diff --git a/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs b/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
index 31c3cb0ffa..08f4df9e1c 100644
--- a/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
+++ b/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
@@ -48,7 +48,8 @@ namespace OpenRA.Mods.Common.UpdateRules
 				new ChangeBuildableArea(),
 				new ChangeCanPowerDown(),
 				new DropPauseAnimationWhenDisabled(),
-				new RemoveOutOfAmmo()
+				new RemoveOutOfAmmo(),
+				new ReplaceRequiresPower()
 			}),
 
 			new UpdatePath("release-20180218", "release-20180307", new UpdateRule[0]),