Render building previews

OpenRA.Game/Traits/Render/RenderSimple.cs

@@ -28,19 +28,24 @@ namespace OpenRA.Traits
 		public Dictionary<string, AnimationWithOffset> anims = new Dictionary<string, AnimationWithOffset>();
 		public Animation anim { get { return anims[""].Animation; } protected set { anims[""].Animation = value; } }
 
+		public static string GetImage(ActorInfo actor, string Tileset)
+		{
+			var Info = actor.Traits.Get<RenderSimpleInfo>();
+			if (Info.OverrideTileset != null && Tileset != null)
+				for (int i = 0; i < Info.OverrideTileset.Length; i++)
+					if (Info.OverrideTileset[i] == Tileset)
+						return Info.OverrideImage[i];
+			
+			return Info.Image ?? actor.Name;
+		}
+		
 		string cachedImage = null;
 		public string GetImage(Actor self)
 		{
 			if (cachedImage != null)
 				return cachedImage;
 			
-			var Info = self.Info.Traits.Get<RenderSimpleInfo>();
+			return cachedImage = GetImage(self.Info, self.World.Map.Tileset);
-			if (Info.OverrideTileset != null)
-				for (int i = 0; i < Info.OverrideTileset.Length; i++)
-					if (Info.OverrideTileset[i] == self.World.Map.Tileset)
-						return cachedImage = Info.OverrideImage[i];
-			
-			return cachedImage = Info.Image ?? self.Info.Name;
 		}
 
 		public RenderSimple(Actor self, Func<int> baseFacing)

OpenRA.Mods.RA/Orders/PlaceBuildingOrderGenerator.cs

@@ -13,6 +13,7 @@ using System.Linq;
 using OpenRA.Graphics;
 using OpenRA.Mods.RA.Buildings;
 using OpenRA.Traits;
+using OpenRA.Mods.RA.Render;
 
 namespace OpenRA.Mods.RA.Orders
 {
@@ -60,11 +61,14 @@ namespace OpenRA.Mods.RA.Orders
 		}
 		
 		public void Tick( World world ) {}
-		
+		public void RenderAfterWorld( WorldRenderer wr, World world ) {}
-		public void RenderAfterWorld( WorldRenderer wr, World world ) { }
-
 		public void RenderBeforeWorld( WorldRenderer wr, World world )
 		{
+			var topleft = Game.viewport.ViewToWorld(Viewport.LastMousePos).ToInt2() - FootprintUtils.AdjustForBuildingSize( BuildingInfo );
+			var renderables = Rules.Info[Building].Traits.Get<RenderBuildingInfo>().BuildingPreview(Rules.Info[Building], world.Map.Tileset);
+			foreach (var r in renderables)
+				r.Sprite.DrawAt(wr,Game.CellSize*topleft + r.Pos,  r.Palette ?? world.LocalPlayer.Palette);
+			
 			BuildingInfo.DrawBuildingGrid( wr, world, Building );
 		}
 

OpenRA.Mods.RA/Render/RenderBuilding.cs

@@ -11,6 +11,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using OpenRA.Graphics;
 using OpenRA.Mods.RA.Buildings;
 using OpenRA.Mods.RA.Effects;
 using OpenRA.Traits;
@@ -22,6 +23,14 @@ namespace OpenRA.Mods.RA.Render
 		public readonly bool HasMakeAnimation = true;
 		public readonly float2 Origin = float2.Zero;
 		public override object Create(ActorInitializer init) { return new RenderBuilding(init);}
+		
+		public virtual IEnumerable<Renderable> BuildingPreview(ActorInfo building, string Tileset)
+		{
+			var anim = new Animation(RenderSimple.GetImage(building, Tileset), () => 0);
+			anim.PlayRepeating("idle");
+			var rb = building.Traits.Get<RenderBuildingInfo>();
+			yield return new Renderable(anim.Image,rb.Origin,rb.Palette,0);
+		}
 	}
 
 	public class RenderBuilding : RenderSimple, INotifyDamage, INotifySold, IRenderModifier

OpenRA.Mods.RA/Render/RenderBuildingWarFactory.cs

@@ -8,6 +8,7 @@
  */
 #endregion
 
+using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Graphics;
 using OpenRA.Traits;
@@ -17,6 +18,17 @@ namespace OpenRA.Mods.RA.Render
 	class RenderWarFactoryInfo : RenderBuildingInfo
 	{
 		public override object Create(ActorInitializer init) { return new RenderWarFactory(init); }
+		
+		public override IEnumerable<Renderable> BuildingPreview(ActorInfo building, string Tileset)
+		{
+			foreach (var r in base.BuildingPreview(building, Tileset))
+				yield return r;
+
+			var anim = new Animation(RenderSimple.GetImage(building, Tileset), () => 0);
+			anim.PlayRepeating("idle-top");
+			var rb = building.Traits.Get<RenderBuildingInfo>();
+			yield return new Renderable(anim.Image,rb.Origin,rb.Palette,0);
+		}
 	}
 
 	class RenderWarFactory : RenderBuilding, INotifyBuildComplete, INotifyDamage, ITick, INotifyProduction, INotifySold