reintroduce Cached<T>; use for Actor.Bounds, Actor.ExtendedBounds, which replace Actor.GetBounds(bool)

OpenRA.Game/Actor.cs

@@ -28,6 +28,8 @@ namespace OpenRA
 		IOccupySpace OccupiesSpace;
 		IHasLocation HasLocation;
 		Lazy<IMove> Move;
+		public Cached<RectangleF> Bounds;
+		public Cached<RectangleF> ExtendedBounds;
 
 		public int2 Location
 		{ get {
@@ -84,10 +86,16 @@ namespace OpenRA
 
 			ApplyIRender = x => x.Render(this);
 			ApplyRenderModifier = (m, p) => p.ModifyRender(this, m);
+			
+			Bounds = Cached.New( () => CalculateBounds(false) );
+			ExtendedBounds = Cached.New( () => CalculateBounds(true) );
 		}
 
 		public void Tick()
 		{
+			Bounds.Invalidate();
+			ExtendedBounds.Invalidate();
+			
 			currentActivity = Util.RunActivity( this, currentActivity );
 		}
 
@@ -112,7 +120,7 @@ namespace OpenRA
 		// vertically to altitude = 0 to support FindUnitsInCircle queries
 		// When false, the bounding box is given for the actor
 		// at its current altitude
-		public RectangleF GetBounds(bool useAltitude)
+		RectangleF CalculateBounds(bool useAltitude)
 		{
 			var size = Size.Value;
 			var loc = CenterLocation - 0.5f * size;

OpenRA.Game/Graphics/WorldRenderer.cs

@@ -125,7 +125,7 @@ namespace OpenRA.Graphics
 
 		public void DrawSelectionBox(Actor selectedUnit, Color c)
 		{
-			var bounds = selectedUnit.GetBounds(false);
+			var bounds = selectedUnit.Bounds.Value;
 
 			var xy = new float2(bounds.Left, bounds.Top);
 			var Xy = new float2(bounds.Right, bounds.Top);

OpenRA.Game/Traits/Selectable.cs

@@ -30,7 +30,7 @@ namespace OpenRA.Traits
 		
 		public void RenderAfterWorld (WorldRenderer wr, Actor self)
 		{
-			var bounds = self.GetBounds(false);
+			var bounds = self.Bounds.Value;
 			Color selectionColor = Color.White;
 
 			var xy = new float2(bounds.Left, bounds.Top);
@@ -55,7 +55,7 @@ namespace OpenRA.Traits
 
 		public void DrawRollover(WorldRenderer wr, Actor self)
 		{
-			var bounds = self.GetBounds(false);
+			var bounds = self.Bounds.Value;
 			
 			var xy = new float2(bounds.Left, bounds.Top);
 			var Xy = new float2(bounds.Right, bounds.Top);
@@ -184,10 +184,12 @@ namespace OpenRA.Traits
 				var thisRow = pips.GetPips(self);
 				if (thisRow == null)
 					continue;
+				
+				var width = self.Bounds.Value.Width;
 
 				foreach (var pip in thisRow)
 				{
-					if (pipxyOffset.X+5 > self.GetBounds(false).Width)
+					if (pipxyOffset.X+5 > width)
 					{
 						pipxyOffset.X = 0;
 						pipxyOffset.Y -= 4;

OpenRA.Game/Traits/World/SpatialBins.cs

@@ -47,7 +47,7 @@ namespace OpenRA.Traits
 
 			foreach (var a in self.World.ActorsWithTrait<IHasLocation>())
 			{
-				var bounds = a.Actor.GetBounds(true);
+				var bounds = a.Actor.ExtendedBounds.Value;
 
 				if (bounds.Right <= Game.CellSize * self.World.Map.Bounds.Left) continue;
 				if (bounds.Bottom <= Game.CellSize * self.World.Map.Bounds.Top) continue;
@@ -81,7 +81,7 @@ namespace OpenRA.Traits
 
 			return ActorsInBins(a.X / scale, b.X / scale, a.Y / scale, b.Y / scale)
 				.Distinct()
-				.Where(u => u.IsInWorld && u.GetBounds(true).IntersectsWith(r));
+				.Where(u => u.IsInWorld && u.ExtendedBounds.Value.IntersectsWith(r));
 		}
 	}
 }

OpenRA.Game/WorldUtils.cs

@@ -45,7 +45,7 @@ namespace OpenRA
 
 				var rect = new RectangleF(min.X, min.Y, max.X - min.X, max.Y - min.Y);
 
-				var inBox = actors.Where(x => x.GetBounds(true).IntersectsWith(rect));
+				var inBox = actors.Where(x => x.ExtendedBounds.Value.IntersectsWith(rect));
 
 				return inBox.Where(x => (x.CenterLocation - a).LengthSquared < r * r);
 			}