Add a debug visualization for screen map rectangles.

OpenRA.Game/Graphics/WorldRenderer.cs

@@ -212,6 +212,13 @@ namespace OpenRA.Graphics
 						r.RenderDebugGeometry(this);
 			}
 
+			if (debugVis.Value != null && debugVis.Value.ScreenMap)
+				foreach (var r in World.ScreenMap.ItemBounds(World.RenderPlayer))
+					Game.Renderer.WorldRgbaColorRenderer.DrawRect(
+						new float3(r.Left, r.Top, r.Bottom),
+						new float3(r.Right, r.Bottom, r.Bottom),
+						1 / Viewport.Zoom, Color.MediumSpringGreen);
+
 			Game.Renderer.Flush();
 		}
 

OpenRA.Game/Primitives/SpatiallyPartitioned.cs

@@ -133,5 +133,7 @@ namespace OpenRA.Primitives
 					}
 				}
 		}
+
+		public IEnumerable<Rectangle> ItemBounds { get { return itemBounds.Values; } }
 	}
 }

OpenRA.Game/Traits/World/DebugVisualizations.cs

@@ -18,6 +18,7 @@ namespace OpenRA.Traits
 	{
 		public bool CombatGeometry;
 		public bool RenderGeometry;
+		public bool ScreenMap;
 		public bool DepthBuffer;
 		public bool ActorTags;
 	}

OpenRA.Game/Traits/World/ScreenMap.cs

@@ -187,5 +187,13 @@ namespace OpenRA.Traits
 				return NoFrozenActors;
 			return partitionedFrozenActors[p].InBox(r).Where(frozenActorIsValid);
 		}
+
+		public IEnumerable<Rectangle> ItemBounds(Player viewer)
+		{
+			var bounds = partitionedActors.ItemBounds
+				.Concat(partitionedEffects.ItemBounds);
+
+			return viewer != null ? bounds.Concat(partitionedFrozenActors[viewer].ItemBounds) : bounds;
+		}
 	}
 }