Converting HEXEN to UDMF maps (Heretic)?

[cocka]

as to how its rendered within the editors environment.

My opinion is that the complex gameplay is much more important than how your maps are rendered.

[Graf Zahl]

Trying to justify some stupid behavior (in this case refusing to use a more current version of an editor) doesn't take the stupidity out of that action. Have you even tried?

DoomBuilder 2 is a crappy old clunker compared to what MaxEd has achieved.

[cocka]

Yes, I have tried. It really annoys me that there are so many options. All the stuff that I have on Custom tabs have been deleted and integrated into other control elements.

[Graf Zahl]

... where it should be. The custom tab is just a crutch to get around the lack of proper support for these features. Any normal mapper would expect to find those among similar properties on the other pages.

[MaxED]

New in R2155:
1. Added Hexen -> UDMF and UDMF -> Hexen action conversion as described in "Universal Doom Map Format ZDoom extensions" (udmf_zdoom.txt). It is used when changing map format form Hexen to UDMF and from UDMF to Hexen.
2. Game configurations, Line Identification action: added "Front side only" (128) flag to arg1. Also, why is this flag missing form the wiki article?
3. Game configurations, Line Identification action: renamed arg1 flags to match corresponding UDMF flag names.

[Tormentor667]

What have I done...

[cocka]

UDMF -> Hexen action conversion

And how would you like to do that? Let's say you have a linedef with an action special and a lineid. Would you set a Line_SetIdentification action special on that with the proper number? Well, so far so good, but then you'll also have to use setlinespecial in a script. Does your program automatically read the action special set in UDMF and rewrite it to a script with setlinespecial?

why is this flag missing form the wiki article?

As far as I know there is no native support for that in hexen format.

[MaxED]

Does your program automatically read the action special set in UDMF and rewrite it to a script with setlinespecial?

No. When a linedef has a tag and no action, it converts it to Line_SetIdentification action. When a linedef has compatible action, it converts tag to action argument, in other cases it just adds a warning to Errors and Warnings window.

---

This code is part of Linedef.TranslateFromUDMF method:

Code: Select all

            //mxd. UDMF -> Hexen action translation. Hardcoded for now...
            if (General.Map.FormatInterface is HexenMapSetIO)
            {
                switch (action)
                {
                    case 208: //TranslucentLine
                        //Convert tag to arg0
                        if (tag > 255)
                        {
                            General.ErrorLogger.Add(ErrorType.Warning, "Linedef " + Index + ": unable to convert Tag (" + tag + ") to LineID because it's greater than 255.");
                        }
                        else
                        {
                            args[0] = tag;
                        }

                        //Convert flags to arg3
                        ConvertFlagsToArg(oldfields, 3);
                        break;

                    case 1: ConvertTagToArg(3); break; //Polyobj_StartLine
                    case 5: ConvertTagToArg(4); break; //Polyobj_ExplicitLine
                    case 181: ConvertTagToArg(2); break; //Plane_Align
                    case 215: ConvertTagToArg(0); break; //Teleport_Line
                    case 222: ConvertTagToArg(0); break; //Scroll_Texture_Model

                    case 160: //Sector_3DFloor
                        if (args[0] > 255) // Split sector tag?
                        {
                            int hitag = args[0] / 256;
                            int lotag = args[0] - hitag;

                            args[0] = lotag;
                            args[4] = hitag;

                            if (tag > 0)
                            {
                                General.ErrorLogger.Add(ErrorType.Warning, "Linedef " + Index + ": unable to convert Tag (" + tag + ") to LineID, because target sector tag (arg0) is greater than 255.");
                            }
                        }
                        else if(tag > 0) // Convert to LineID?
                        {
                            if (tag > 255)
                            {
                                General.ErrorLogger.Add(ErrorType.Warning, "Linedef " + Index + ": unable to convert Tag (" + tag + ") to LineID, because linedef tag is greater than 255.");
                            }
                            else
                            {
                                args[4] = tag;
                                args[1] &= 8; // Add "Use arg4 as LineId" flag
                            }
                        }

                        break;

                    default: // Convert tag to Line_SetIdentification?
                        if (tag != 0)
                        {
                            if (action != 0)
                            {
                                General.ErrorLogger.Add(ErrorType.Warning, "Linedef " + Index + ": unable to convert Tag (" + tag + ") to LineID, because linedef already has an action.");
                            }
                            else // Convert to Line_SetIdentification
                            {
                                int hiid = tag / 256;
                                int loid = tag - hiid;

                                action = 121;
                                args[0] = loid;
                                args[4] = hiid;
                                ConvertFlagsToArg(oldfields, 1);
                            }
                        }
                        break;
                }

                // Clear tag
                tag = 0;
            }
 

As far as I know there is no native support for that in hexen format.

There are loads of things on ZDoom wiki, which are not supported by vanilla Hexen.

[Gez]

I don't know when that flag was added to Line_SetId, probably after 2008 which was when the flag list on that article was last updated before today. It's not extremely important anyway.

[cocka]

When a linedef has compatible action

Then that compatible action has to be set in a script with setlinespecial. If this doesn't happen automatically, the user must write OPEN scripts with setlinespecials to have the same effect as if it were a line with action special and a lineid.

which are not supported by vanilla Hexen.

I meant the hexen format supported by ZDoom. Not the vanilla one. This option must have been recently added. It might have been added two or three years ago.

[MaxED]

Then that compatible action has to be set in a script with setlinespecial.

No it doesn't. By compatible action specials I mean those, which can set LineID themselves.

This option must have been recently added. It might have been added two or three years ago.

[Graf Zahl]

To make a long story short:

Since Hexen format is a rather limited subset of UDMF, any map that uses UDMF for its features will be quite drastically broken after downconversion. There's really no point investing more work than necessary here, it should convert what it can, and output a (long) log of what couldn't be done.

Why anyone would ever use such a feature is beyond me, though. The only thing I can imagine is having started with the incorrect settings, in which case it should be ok as it is.

[MaxED]

DB2/GZDB copy-paste logic uses it. When you copy map elements, they are translated to UDMF, when you paste, they are translated from UDMF to current map format. This allows copy-pasting between maps, which use different map format without inventing some special copy-paste data format.

[Zanieon]

What have I done...

*Computer Voice On* Seed of the discord planted with success! Thank you for generate a great discussion *Computer Voice off*

[cocka]

By compatible action specials I mean those, which can set LineID themselves.

So you are saying that [wiki]Line_SetIdentification[/wiki] is not a compatible action special.

No it doesn't

Then how would you assign an action special for such a line in hexen format? Wiki clearly says that [wiki]Polyobj_StartLine[/wiki] just defines a new polyobject without two-sided lines. Though the line won't have an event.. (just a definition for the polyobject)

No, I'm not an elf, but a moron.

It might have been added two or three years ago.

I talked about firstsideonly flag. It was not even mentioned for a long time on that wiki page either. It was only available here:

[wiki]Linedef[/wiki]