Add WithNukeLaunchAnimation and -Overlay traits.

OpenRA.Mods.Common/Traits/Render/WithNukeLaunchAnimation.cs

@@ -0,0 +1,54 @@
+#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.Render
+{
+	[Desc("Replaces the building animation when `NukePower` is triggered.")]
+	public class WithNukeLaunchAnimationInfo : ConditionalTraitInfo, Requires<WithSpriteBodyInfo>
+	{
+		[Desc("Sequence name to use")]
+		[SequenceReference] public readonly string Sequence = "active";
+
+		public override object Create(ActorInitializer init) { return new WithNukeLaunchAnimation(init.Self, this); }
+	}
+
+	public class WithNukeLaunchAnimation : ConditionalTrait<WithNukeLaunchAnimationInfo>, INotifyNuke, INotifyBuildComplete, INotifySold
+	{
+		readonly WithSpriteBody spriteBody;
+		bool buildComplete;
+
+		public WithNukeLaunchAnimation(Actor self, WithNukeLaunchAnimationInfo info)
+			: base(info)
+		{
+			spriteBody = self.TraitOrDefault<WithSpriteBody>();
+		}
+
+		void INotifyNuke.Launching(Actor self)
+		{
+			if (buildComplete && spriteBody != null && !IsTraitDisabled)
+				spriteBody.PlayCustomAnimation(self, Info.Sequence, () => spriteBody.CancelCustomAnimation(self));
+		}
+
+		void INotifyBuildComplete.BuildingComplete(Actor self)
+		{
+			buildComplete = true;
+		}
+
+		void INotifySold.Selling(Actor self)
+		{
+			buildComplete = false;
+		}
+
+		void INotifySold.Sold(Actor self) { }
+	}
+}