Split IPlaceBuildingPreviewGeneratorInfo from PBOG.

OpenRA.Mods.Common/Traits/Buildings/SequencePlaceBuildingPreview.cs

@@ -0,0 +1,101 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2019 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 OpenRA.Graphics;
+using OpenRA.Mods.Common.Orders;
+using OpenRA.Mods.Common.Traits.Render;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Creates a building placement preview based on a defined sequence.")]
+	public class SequencePlaceBuildingPreviewInfo : FootprintPlaceBuildingPreviewInfo, Requires<RenderSpritesInfo>
+	{
+		[SequenceReference]
+		[Desc("Sequence name to use.")]
+		public readonly string Sequence = "idle";
+
+		[PaletteReference("SequencePaletteIsPlayerPalette")]
+		[Desc("Custom palette name.")]
+		public readonly string SequencePalette = null;
+
+		[Desc("Custom palette is a player palette BaseName.")]
+		public readonly bool SequencePaletteIsPlayerPalette = true;
+
+		[Desc("Footprint types to draw underneath the actor preview.")]
+		public readonly PlaceBuildingCellType FootprintUnderPreview = PlaceBuildingCellType.None;
+
+		[Desc("Footprint types to draw above the actor preview.")]
+		public readonly PlaceBuildingCellType FootprintOverPreview = PlaceBuildingCellType.Valid | PlaceBuildingCellType.LineBuild | PlaceBuildingCellType.Invalid;
+
+		protected override IPlaceBuildingPreview CreatePreview(WorldRenderer wr, ActorInfo ai, TypeDictionary init)
+		{
+			return new SequencePlaceBuildingPreviewPreview(wr, ai, this, init);
+		}
+
+		public override object Create(ActorInitializer init)
+		{
+			return new SequencePlaceBuildingPreview();
+		}
+	}
+
+	public class SequencePlaceBuildingPreview { }
+
+	class SequencePlaceBuildingPreviewPreview : FootprintPlaceBuildingPreviewPreview
+	{
+		readonly SequencePlaceBuildingPreviewInfo info;
+		readonly Animation preview;
+		readonly PaletteReference palette;
+
+		public SequencePlaceBuildingPreviewPreview(WorldRenderer wr, ActorInfo ai, SequencePlaceBuildingPreviewInfo info, TypeDictionary init)
+			: base(wr, ai, info, init)
+		{
+			this.info = info;
+			var owner = init.Get<OwnerInit>().Value(wr.World);
+			var faction = init.Get<FactionInit>().Value(wr.World);
+
+			var rsi = ai.TraitInfo<RenderSpritesInfo>();
+
+			if (!string.IsNullOrEmpty(info.SequencePalette))
+				palette = wr.Palette(info.SequencePaletteIsPlayerPalette ? info.SequencePalette + owner.InternalName : info.SequencePalette);
+			else
+				palette = wr.Palette(rsi.Palette ?? rsi.PlayerPalette + owner.InternalName);
+
+			preview = new Animation(wr.World, rsi.GetImage(ai, wr.World.Map.Rules.Sequences, faction));
+			preview.PlayRepeating(info.Sequence);
+		}
+
+		protected override void TickInner()
+		{
+			preview.Tick();
+		}
+
+		protected override IEnumerable<IRenderable> RenderInner(WorldRenderer wr, CPos topLeft, Dictionary<CPos, PlaceBuildingCellType> footprint)
+		{
+			foreach (var r in RenderDecorations(wr, topLeft))
+				yield return r;
+
+			if (info.FootprintUnderPreview != PlaceBuildingCellType.None)
+				foreach (var r in RenderFootprint(wr, topLeft, footprint, info.FootprintUnderPreview))
+					yield return r;
+
+			var centerPosition = wr.World.Map.CenterOfCell(topLeft) + centerOffset;
+			foreach (var r in preview.Render(centerPosition, WVec.Zero, 0, palette, 1.0f))
+				yield return r;
+
+			if (info.FootprintOverPreview != PlaceBuildingCellType.None)
+				foreach (var r in RenderFootprint(wr, topLeft, footprint, info.FootprintOverPreview))
+					yield return r;
+		}
+	}
+}