Introduce actor previews for PBOG and the editor.

OpenRA.Mods.RA/Graphics/ActorPreview.cs

@@ -0,0 +1,45 @@
+#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 System;
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Primitives;
+
+namespace OpenRA.Mods.RA.Graphics
+{
+	public interface IActorPreview
+	{
+		void Tick();
+		IEnumerable<IRenderable> Render(WorldRenderer wr, WPos pos);
+	}
+
+	public class ActorPreviewInitializer
+	{
+		public readonly ActorInfo Actor;
+		public readonly Player Owner;
+		public readonly WorldRenderer WorldRenderer;
+		public World World { get { return WorldRenderer.world; } }
+
+		readonly TypeDictionary dict;
+
+		public ActorPreviewInitializer(ActorInfo actor, Player owner, WorldRenderer worldRenderer, TypeDictionary dict)
+		{
+			Actor = actor;
+			Owner = owner;
+			WorldRenderer = worldRenderer;
+			this.dict = dict;
+		}
+
+		public T Get<T>() where T : IActorInit { return dict.Get<T>(); }
+		public U Get<T, U>() where T : IActorInit<U> { return dict.Get<T>().Value(World); }
+		public bool Contains<T>() where T : IActorInit { return dict.Contains<T>(); }
+	}
+}

OpenRA.Mods.RA/Graphics/SpriteActorPreview.cs

@@ -0,0 +1,42 @@
+#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 System;
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Primitives;
+
+namespace OpenRA.Mods.RA.Graphics
+{
+	public class SpriteActorPreview : IActorPreview
+	{
+		readonly Animation animation;
+		readonly WVec offset;
+		readonly int zOffset;
+		readonly PaletteReference pr;
+		readonly float scale;
+
+		public SpriteActorPreview(Animation animation, WVec offset, int zOffset, PaletteReference pr, float scale)
+		{
+			this.animation = animation;
+			this.offset = offset;
+			this.zOffset = zOffset;
+			this.pr = pr;
+			this.scale = scale;
+		}
+
+		public void Tick() { animation.Tick(); }
+
+		public IEnumerable<IRenderable> Render(WorldRenderer wr, WPos pos)
+		{
+			return animation.Render(pos, offset, zOffset, pr, scale);
+		}
+	}
+}