Fixed some issues with 3D circle rendering, plus UDMF config changes:

- Added unique sprite sprites for custom rows/circles of items
- Set default values for hoops and custom rows/circles of items

Build/Configurations/Includes/SRB222_things.cfg

@@ -2341,7 +2341,7 @@ udmf
 		arrow = 1;
 		title = "Special Placement Patterns";
 		width = 16;
-		height = 384;
+		height = 64;
 		sprite = "RINGA0";
 
 		600
@@ -2349,6 +2349,7 @@ udmf
 			arrow = 0;
 			title = "5 Vertical Rings (Yellow Spring)";
 			sprite = "internal:ringverticalyellow";
+			height = 384;
 		}
 		601
 		{
@@ -2382,6 +2383,7 @@ udmf
 			title = "Circle of Rings (Big)";
 			sprite = "internal:circlebigring";
 			width = 192;
+			height = 384;
 			centerhitbox = true;
 		}
 		606
@@ -2397,6 +2399,7 @@ udmf
 			title = "Circle of Blue Spheres (Big)";
 			sprite = "internal:circlebigsphere";
 			width = 192;
+			height = 384;
 			centerhitbox = true;
 		}
 		608
@@ -2412,23 +2415,29 @@ udmf
 			title = "Circle of Rings and Spheres (Big)";
 			sprite = "internal:circlebigringsphere";
 			width = 192;
+			height = 384;
 			centerhitbox = true;
 		}
 		610
 		{
 			title = "Row of Items";
-			sprite = "RINGA0";
+			sprite = "internal:customrow";
+			width = 32;
+			height = 384;
 			arg0
 			{
 				title = "Number of items";
+				default = 5;
 			}
 			arg1
 			{
 				title = "Horizontal spacing";
+				default = 64;
 			}
 			arg2
 			{
 				title = "Vertical spacing";
+				default = 64;
 			}
 			stringarg0
 			{
@@ -2439,17 +2448,21 @@ udmf
 		611
 		{
 			title = "Circle of Items";
-			sprite = "RINGA0";
+			sprite = "internal:customcircle";
+			width = 32;
+			height = 64;
 			centerhitbox = true;
 			arg0
 			{
 				title = "Number of items";
+				default = 8;
 			}
 			arg1
 			{
 				title = "Radius";
 				renderstyle = "circle";
 				rendercolor = "#6600FF";
+				default = 192;
 			}
 			stringarg0
 			{
@@ -4538,6 +4551,7 @@ udmf
 			arg0
 			{
 				title = "Radius";
+				default = 96;
 			}
 		}
 	}

Source/Core/GZBuilder/Data/LinksCollector.cs

@@ -497,7 +497,10 @@ namespace CodeImp.DoomBuilder.GZBuilder.Data
 				if(tti == null) continue;
 
 				Vector3D pos = t.Position;
-				pos.z += GetCorrectHeight(t, blockmap, false);
+				if (t.AbsoluteZ)
+					pos.z = GetCorrectHeight(t, blockmap, tti.CenterHitbox);
+				else
+					pos.z += GetCorrectHeight(t, blockmap, tti.CenterHitbox);
 
 				for(int i = 0; i < t.Args.Length; i++)
 				{
@@ -1051,10 +1054,16 @@ namespace CodeImp.DoomBuilder.GZBuilder.Data
 		// Required only when called from VisualMode
 		private static double GetCorrectHeight(Thing thing, VisualBlockMap blockmap, bool usethingcenter)
 		{
-			if(blockmap == null) return 0f;
-			double height = (usethingcenter ? thing.Height / 2f : 0f);
-			if(thing.Sector == null) thing.DetermineSector(blockmap);
-			if(thing.Sector != null) height += thing.Sector.FloorHeight;
+			if (blockmap == null) return 0f;
+			double height = (usethingcenter ? 0f : (thing.IsFlipped ? thing.Height : 0f));
+
+			if (thing.AbsoluteZ)
+				height = thing.Position.z + height;
+			else
+			{
+				if (thing.Sector == null) thing.DetermineSector(blockmap);
+				if (thing.Sector != null) height += thing.Sector.FloorHeight;
+			}
 			return height;
 		}