This is not relevant for any of the stock movies as they use separate sound files, we need to be aware of mods using the streaming sound capabilities of MVE and SMK.
While in GZDoom this uses the IWAD name, the same approach is a lot more problematic here because of name duplications with far more incompatible content.
So this allows targeting a group of base games instead of one specific version.
Parts of the sound system treat entry 0 as "no sound" so nothing placed there would play.
This made the one custom sound in "The Way of Ira" not play because as the last sound being defined it ended up in the first, invalid slot.
Due to some old code it could happen that these weren't fully set up and missed their translations.
Fixes#301 - Blood's invulnerability palette is identical to the base.
To allow cumulative loading without interfering with other ports, Raze will now look for files called xxxx-raze.def, where xxxx is the default .def name (e.g. duke3d-raze.def for Duke3D.) and if that is found, cumulatively load all same-named files - it will fall back on the default name if no such thing is found.
-def still overrides both and will not cumulatively load.
This was incomplete and just ignored Duke's special music, and the levelnum generation used an outdated formula so that it never managed to assign any music to the maps.
At these places there's some inteference that can bring the engine into an unstable state.
This is not a real fix, just a quick workaround. The actual problem requires closer examination why these are the only places where this happens.
The same logic as in GZDoom applies: The root must not have any other content and the subdirectory must contain identifiable game content.
Some handling was also added to strip out macOS resource fork folders because they can contain data that can confuse file detection.
This was supposed to get the same treatment as d_net.cpp, i.e get the old license restored and be released under a duplicate GPL/Doom Source license but it was somehow missed when it got added. Also removed all leftover Doom specific parts.
* the parser read numbers with leading zeros as octal, which is not wanted here
* texture lookup by file name must be forced for root directory entries.
