Updated: any graphic can be used as a skybox texture.

Fixed a crash when trying to get map title after closing Map options window.
Updated game configurations (Sector_SetPortal).

Build/Configurations/Includes/ZDoom_linedefs.cfg

@@ -3231,13 +3231,22 @@ zdoom
 					0 = "Link to portal with same tag";
 					1 = "Copy portal from second tag";
 					2 = "Eternity-style skybox portal";
+					3 = "Plane portal";
+					4 = "Horizon portal";
+					5 = "Copy portal to line";
 				}
 			}
 			arg2
 			{
-				title = "Floor / Ceiling";
+				title = "Plane";
 				type = 11;
-				enum = "floorceilingboth";
+				enum
+				{
+					0 = "Floor";
+					1 = "Ceiling";
+					2 = "Both";
+					3 = "Any (Copy portal type only)";
+				}
 			}
 			arg3
 			{

Build/Configurations/Includes/ZDoom_misc.cfg

@@ -599,13 +599,6 @@ enums
 		1 = "Floor";
 	}
 	
-	floorceilingboth
-	{
-		0 = "Floor";
-		1 = "Ceiling";
-		2 = "Both";
-	}
-	
 	sector_flags
 	{
 		1 = "Silent";

Source/Core/Data/DataManager.cs

@@ -999,7 +999,7 @@ namespace CodeImp.DoomBuilder.Data
 			// Go for all opened containers
 			for(int i = containers.Count - 1; i >= 0; i--)
 			{
-				// This contain provides this patch?
+				// This container provides this patch?
 				Stream patch = containers[i].GetTextureData(pname, longname);
 				if(patch != null) return patch;
 			}
@@ -1040,9 +1040,67 @@ namespace CodeImp.DoomBuilder.Data
 			return unknownimage; //mxd
 		}
 
+		//mxd. This tries to find and load any image with given name
+		internal Bitmap GetTextureBitmap(string name)
+		{
+			// Check the textures first...
+			ImageData img = GetTextureImage(name);
+			if(img is UnknownImage && !General.Map.Config.MixTexturesFlats)
+				img = GetFlatImage(name);
+
+			if(!(img is UnknownImage))
+			{
+				if(!img.IsImageLoaded) img.LoadImage();
+				if(!img.LoadFailed)
+				{
+					return new Bitmap(img.GetBitmap());
+				}
+			}
+			
+			// Try to find any image...
+			for(int i = containers.Count - 1; i >= 0; i--)
+			{
+				// This container has a lump with given name?
+				if(containers[i] is PK3StructuredReader)
+				{
+					name = ((PK3StructuredReader)containers[i]).FindFirstFile(name, true);
+				}
+				else if(!(containers[i] is WADReader))
+				{
+					throw new NotImplementedException("Unsupported container type!");
+				}
+
+				if(!containers[i].FileExists(name)) continue;
+				MemoryStream mem = containers[i].LoadFile(name);
+				if(mem == null) continue;
+
+				// Is it an image?
+				IImageReader reader = ImageDataFormat.GetImageReader(mem, ImageDataFormat.DOOMPICTURE, General.Map.Data.Palette);
+				if(!(reader is UnknownImageReader))
+				{
+					// Load the image
+					mem.Seek(0, SeekOrigin.Begin);
+					Bitmap result;
+					try { result = reader.ReadAsBitmap(mem); }
+					catch(InvalidDataException)
+					{
+						// Data cannot be read!
+						result = null;
+					}
+
+					// Found it?
+					if(result != null) return result;
+				}
+			}
+
+			// No such image found
+			return null;
+		}
+
 		//mxd
 		public string GetFullTextureName(string name)
 		{
+			if(string.IsNullOrEmpty(name)) return name;
 			if(Path.GetFileNameWithoutExtension(name) == name && name.Length > CLASIC_IMAGE_NAME_LENGTH) 
 				name = name.Substring(0, CLASIC_IMAGE_NAME_LENGTH);
 			long hash = MurmurHash2.Hash(name.Trim().ToUpperInvariant());
@@ -2329,14 +2387,10 @@ namespace CodeImp.DoomBuilder.Data
 				else
 				{
 					// Create classic texture
-					ImageData tex = GetTextureImage(skytex);
+					Bitmap img = GetTextureBitmap(skytex);
-					if(!(tex is UnknownImage))
+					if(img != null)
 					{
-						if(!tex.IsImageLoaded) tex.LoadImage();
+						skybox = MakeClassicSkyBox(img, true);
-						if(!tex.LoadFailed)
-						{
-							skybox = MakeClassicSkyBox(new Bitmap(tex.GetBitmap()), true);
-						}
 					}
 				}
 			}
@@ -2490,18 +2544,12 @@ namespace CodeImp.DoomBuilder.Data
 			int targetsize = 0;
 			for(int i = 0; i < info.Textures.Count; i++)
 			{
-				ImageData tex = GetTextureImage(info.Textures[i]);
+				sides[i] = GetTextureBitmap(info.Textures[i]);
-				if(!(tex is UnknownImage))
+				if(sides[i] != null)
 				{
-					if(!tex.IsImageLoaded) tex.LoadImage();
-					if(!tex.LoadFailed)
-					{
-						sides[i] = new Bitmap(tex.GetBitmap());
 					targetsize = Math.Max(targetsize, Math.Max(sides[i].Width, sides[i].Height));
 				}
-				}
+				else
-
-				if(sides[i] == null)
 				{
 					General.ErrorLogger.Add(ErrorType.Error, "Unable to create \"" + info.Name + "\" skybox: unable to find \"" + info.Textures[i] + "\" texture");
 					return null;
@@ -2536,14 +2584,10 @@ namespace CodeImp.DoomBuilder.Data
 			int targetsize = 0;
 
 			// Create NWSE images from the side texture
-			ImageData side = GetTextureImage(info.Textures[0]);
+			Bitmap sideimg = GetTextureBitmap(info.Textures[0]);
-			if(!(side is UnknownImage))
+			if(sideimg != null)
 			{
-				if(!side.IsImageLoaded) side.LoadImage();
+				// This should be 4x1 format image. If it's not, we'll need to resize it
-				if(!side.LoadFailed)
-				{
-					// This should be 4x1 format image. If it's not, resize it
-					Bitmap sideimg = new Bitmap(side.GetBitmap());
 				targetsize = Math.Max(sideimg.Width / 4, sideimg.Height);
 
 				if(targetsize == 0)
@@ -2576,7 +2620,6 @@ namespace CodeImp.DoomBuilder.Data
 					sides[i] = img;
 				}
 			}
-			}
 
 			// Sanity check...
 			if(sides[0] == null || sides[1] == null || sides[2] == null || sides[3] == null)
@@ -2586,15 +2629,9 @@ namespace CodeImp.DoomBuilder.Data
 			}
 
 			// Create top
-			ImageData top = GetTextureImage(info.Textures[1]);
+			Bitmap topimg = GetTextureBitmap(info.Textures[1]);
-			if(!(top is UnknownImage))
+			if(topimg != null)
 			{
-				if(!top.IsImageLoaded) top.LoadImage();
-				if(!top.LoadFailed)
-				{
-					// Copy bitmap 
-					Bitmap topimg = new Bitmap(top.GetBitmap());
-					
 				// Resize if needed
 				if(topimg.Width != targetsize || topimg.Height != targetsize)
 					topimg = ResizeImage(topimg, targetsize, targetsize);
@@ -2602,25 +2639,16 @@ namespace CodeImp.DoomBuilder.Data
 				// Add to collection
 				sides[4] = topimg;
 			}
-			}
+			else
-
-			// Sanity check...
-			if(sides[4] == null)
 			{
 				General.ErrorLogger.Add(ErrorType.Error, "Unable to create \"" + info.Name + "\" skybox: unable to find \"" + info.Textures[1] + "\" texture");
 				return null;
 			}
 
 			// Create bottom
-			ImageData bottom = GetTextureImage(info.Textures[2]);
+			Bitmap bottomimg = GetTextureBitmap(info.Textures[2]);
-			if(!(bottom is UnknownImage))
+			if(bottomimg != null)
 			{
-				if(!bottom.IsImageLoaded) bottom.LoadImage();
-				if(!bottom.LoadFailed)
-				{
-					// Copy bitmap 
-					Bitmap bottomimg = new Bitmap(bottom.GetBitmap());
-
 				// Resize if needed
 				if(bottomimg.Width != targetsize || bottomimg.Height != targetsize)
 					bottomimg = ResizeImage(bottomimg, targetsize, targetsize);
@@ -2628,10 +2656,7 @@ namespace CodeImp.DoomBuilder.Data
 				// Add to collection
 				sides[5] = bottomimg;
 			}
-			}
+			else
-
-			// Sanity check...
-			if(sides[5] == null)
 			{
 				General.ErrorLogger.Add(ErrorType.Error, "Unable to create \"" + info.Name + "\" skybox: unable to find \"" + info.Textures[2] + "\" texture");
 				return null;

Source/Core/Data/DirectoryReader.cs

@@ -28,7 +28,7 @@ namespace CodeImp.DoomBuilder.Data
 	{
 		#region ================== Variables
 
-		private DirectoryFilesList files;
+		private readonly DirectoryFilesList files;
 
 		#endregion
 		
@@ -359,7 +359,7 @@ namespace CodeImp.DoomBuilder.Data
 		}
 
 		// This finds the first file that has the specific name, regardless of file extension
-		protected override string FindFirstFile(string beginswith, bool subfolders)
+		internal override string FindFirstFile(string beginswith, bool subfolders)
 		{
 			return files.GetFirstFile(beginswith, subfolders);
 		}

Source/Core/Data/PK3Reader.cs

@@ -387,7 +387,7 @@ namespace CodeImp.DoomBuilder.Data
 		}
 
 		// This finds the first file that has the specific name, regardless of file extension
-		protected override string FindFirstFile(string beginswith, bool subfolders)
+		internal override string FindFirstFile(string beginswith, bool subfolders)
 		{
 			return files.GetFirstFile(beginswith, subfolders);
 		}

Source/Core/Data/PK3StructuredReader.cs

@@ -727,7 +727,7 @@ namespace CodeImp.DoomBuilder.Data
 		protected abstract string[] GetFilesWithExt(string path, string extension, bool subfolders);
 
 		// This must find the first file that has the specific name, regardless of file extension
-		protected abstract string FindFirstFile(string beginswith, bool subfolders);
+		internal abstract string FindFirstFile(string beginswith, bool subfolders);
 
 		// This must find the first file that has the specific name, regardless of file extension
 		protected abstract string FindFirstFile(string path, string beginswith, bool subfolders);

Source/Core/Editing/CopyPasteManager.cs

@@ -517,9 +517,9 @@ namespace CodeImp.DoomBuilder.Editing
 							{
 								PastePrefab(stream, options);
 								lastprefabfile = openfile.FileName;
+								stream.Dispose();
 							}
 							General.MainWindow.UpdateInterface();
-							stream.Dispose();
 						}
 
 						Cursor.Current = oldcursor;
@@ -573,8 +573,11 @@ namespace CodeImp.DoomBuilder.Editing
 									General.ShowErrorMessage("Error while reading prefab from file! See log file for error details.", MessageBoxButtons.OK);
 								}
 
-								if(stream != null) PastePrefab(stream, options);
+								if(stream != null)
+								{
+									PastePrefab(stream, options);
 									stream.Dispose();
+								}
 								General.MainWindow.UpdateInterface();
 								Cursor.Current = oldcursor;
 							}

Source/Core/General/MapManager.cs

@@ -2210,15 +2210,15 @@ namespace CodeImp.DoomBuilder
 				}
 				map.UpdateCustomLinedefColors();
 
+				// Reload resources
+				ReloadResources();
+
 				// Update interface
 				General.MainWindow.SetupInterface();
 				General.MainWindow.UpdateThingsFilters();
 				General.MainWindow.UpdateLinedefColorPresets(); //mxd
 				General.MainWindow.UpdateInterface();
 
-				// Reload resources
-				ReloadResources();
-
 				//mxd. Translate texture names
 				bool nameschanged = map.TranslateTextureNames(config.UseLongTextureNames, false);
 				grid.TranslateBackgroundName(config.UseLongTextureNames);