Fixed, ACC compiler: in some cases ACC errors were ignored.

Fixed, Script Editor, cosmetic: we should not show error line number when we don't have one.
ZDoom acc.exe: several error types now output more detailed info.
Fixed, Visual mode: UDMF thing alpha property was applied only when UDMF renderstyle property was also set (should also be applied when renderstyle property is set in the DECORATE actor definition).
Game configurations, ZDoom family: Pistol and Gold Wand actors now use internal sprites.
Updated ZDoom ACC and ZDoom_ACS.cfg (PickActor flags).

Build/Compilers/ZDoom/zdefs.acs

@@ -984,6 +984,11 @@
 #define FHF_NORANDOMPUFFZ	1
 #define FHF_NOIMPACTDECAL	2
 
+// PickActor flags
+
+#define	PICKAF_FORCETID			1
+#define	PICKAF_RETURNTID		2
+
 // Actor flags
 #define MF_SPECIAL          0x00000001
 #define MF_SOLID            0x00000002

Build/Configurations/Includes/ZDoom_things.cfg

@@ -1486,7 +1486,7 @@ doom
 		5010
 		{
 			title = "Pistol";
-			sprite = "PISTA0";
+			sprite = "internal:ZDoomPistol";
 			class = "Pistol";
 		}
 	}
@@ -1653,7 +1653,7 @@ heretic
 		9042
 		{
 			title = "Gold Wand";
-			sprite = "GWANA0";
+			sprite = "internal:ZDoomGoldWand";
 			class = "GoldWand";
 		}		
 	}

Build/Scripting/ZDoom_ACS.cfg

@@ -841,6 +841,8 @@ constants
 	NOT_TOP;
 	OFF;
 	ON;
+	PICKAF_FORCETID;
+	PICKAF_RETURNTID;
 	PLAYERINFO_AIMDIST;
 	PLAYERINFO_COLOR;
 	PLAYERINFO_DESIREDFOV;

Source/Core/Compilers/AccCompiler.cs

@@ -151,6 +151,7 @@ namespace CodeImp.DoomBuilder.Compilers
 					Regex errlinematcher = new Regex(":[0-9]+: ", RegexOptions.Compiled | RegexOptions.CultureInvariant);
 					
 					// Read all lines
+					bool erroradded = false; //mxd
 					string[] errlines = File.ReadAllLines(errfile);
 					while(line < errlines.Length)
 					{
@@ -181,11 +182,18 @@ namespace CodeImp.DoomBuilder.Compilers
 							
 							// Report the error
 							ReportError(err);
+							erroradded = true; //mxd
 						}
 						
 						// Next line
 						line++;
 					}
+
+					//mxd. Some ACC errors are not properly formatted. If that's the case, threat the whole acs.err as an error...
+					if(!erroradded && errlines.Length > 0)
+					{
+						ReportError(new CompilerError(string.Join(Environment.NewLine, errlines)));
+					}
 				}
 				catch(Exception e)
 				{

Source/Core/Controls/ScriptEditorPanel.cs

@@ -383,10 +383,9 @@ namespace CodeImp.DoomBuilder.Controls
 				ListViewItem ei = new ListViewItem(listindex.ToString());
 				ei.ImageIndex = 0;
 				ei.SubItems.Add(e.description);
-				if(e.filename.StartsWith("?"))
-					ei.SubItems.Add(e.filename.Replace("?", "") + " (line " + (e.linenumber + 1) + ")");
-				else
-					ei.SubItems.Add(Path.GetFileName(e.filename) + " (line " + (e.linenumber + 1) + ")");
+				string filename = (e.filename.StartsWith("?") ? e.filename.Replace("?", "") : Path.GetFileName(e.filename)); //mxd
+				string linenumber = (e.linenumber != CompilerError.NO_LINE_NUMBER ? " (line " + (e.linenumber + 1) + ")" : String.Empty); //mxd
+				ei.SubItems.Add(filename + linenumber);
 				ei.Tag = e;
 				errorlist.Items.Add(ei);
 				listindex++;

Source/Plugins/BuilderModes/VisualModes/BaseVisualThing.cs

@@ -122,7 +122,12 @@ namespace CodeImp.DoomBuilder.BuilderModes
 					else if(Thing.Fields.ContainsKey("renderstyle"))
 					{
 						renderstyle = Thing.Fields.GetValue("renderstyle", renderstyle);
-						if(Thing.Fields.ContainsKey("alpha")) alpha = (byte)(General.Clamp(Thing.Fields.GetValue("alpha", info.Alpha), 0f, 1f) * 255);
+					}
+
+					if((renderstyle == "add" || renderstyle == "translucent" || renderstyle == "subtract" || renderstyle == "stencil") 
+						&& Thing.Fields.ContainsKey("alpha"))
+					{
+						alpha = (byte)(General.Clamp(Thing.Fields.GetValue("alpha", info.Alpha), 0f, 1f) * 255);
 					}
 				}
 				else if(General.Map.HEXEN)