add crane animation to Dune 2000 and Tiberian Sun

closes #3754

OpenRA.Mods.D2k/Render/WithBuildingPlacedOverlayInfo.cs

@@ -0,0 +1,70 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using OpenRA.FileFormats;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+using OpenRA.Mods.RA.Buildings;
+
+namespace OpenRA.Mods.RA.Render
+{
+	public class WithBuildingPlacedOverlayInfo : ITraitInfo, Requires<RenderSpritesInfo>, Requires<IBodyOrientationInfo>
+	{
+		[Desc("Sequence name to use")]
+		public readonly string Sequence = "crane-overlay";
+
+		[Desc("Position relative to body")]
+		public readonly WVec Offset = WVec.Zero;
+
+		public object Create(ActorInitializer init) { return new WithBuildingPlacedOverlay(init.self, this); }
+	}
+
+	public class WithBuildingPlacedOverlay : INotifyBuildComplete, INotifySold, INotifyDamageStateChanged, INotifyBuildingPlaced
+	{
+		Animation overlay;
+		bool buildComplete;
+
+		public WithBuildingPlacedOverlay(Actor self, WithBuildingPlacedOverlayInfo info)
+		{
+			var rs = self.Trait<RenderSprites>();
+			var body = self.Trait<IBodyOrientation>();
+
+			buildComplete = !self.HasTrait<Building>(); // always render instantly for units
+
+			overlay = new Animation(rs.GetImage(self));
+			overlay.Play(info.Sequence);
+			rs.anims.Add("crane_overlay_{0}".F(info.Sequence),
+				new AnimationWithOffset(overlay,
+					() => body.LocalToWorld(info.Offset.Rotate(body.QuantizeOrientation(self, self.Orientation))),
+					() => !buildComplete));
+		}
+
+		public void BuildingComplete(Actor self)
+		{
+			buildComplete = true;
+		}
+
+		public void Sold(Actor self) { }
+		public void Selling(Actor self)
+		{
+			buildComplete = false;
+		}
+
+		public void DamageStateChanged(Actor self, AttackInfo e)
+		{
+			overlay.ReplaceAnim(RenderSprites.NormalizeSequence(overlay, e.DamageState, overlay.CurrentSequence.Name));
+		}
+
+		public void BuildingPlaced(Actor self)
+		{
+			overlay.Play(overlay.CurrentSequence.Name);
+		}
+	}
+}