* the bunch drawer can at most process an angular range of 180°. If this gets exceeded it can run into wraparound issues that may cause holes in the geometry.
* there was no clipping to the current field of view so it always checked the full 360°.
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 works as long as the loaded mods have one single .ini file in them - in that case it is assumed that it is supposed to replace blood.ini, which will allow dragging & dropping such archives without further user intervention.
* moving polymost_voxdraw into polymost.cpp.
* consolidated all remaining voxel code in hw_voxels.cpp. All original Build voxel code is completely gone now, except for polymost_voxdraw, so this got moved out of the build/ folder.
* integrate Blood's voxel init code into the main function.
* some further cleanup was allowed as a result of this, so engineInit is gone now because these parts can now be done outside the games' app_init functions.
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.
Fix undefined behavior/potential OOB access in ST_21_FLOOR_DOOR. g_AnimateGoal does not take a sector number, it takes an animation index, and caps at 1024, not 4096.
* 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.
* 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.
* Using the Doom-style dome here because it looks better.
* this necessitated changes to the backend to allow both types of sky domes at the same time
* do not clamp panning fields for cloudy sky with the new renderer because this makes the texture jump.
The sound system may play sounds on them after their deletion - this resulted in undefined behavior. To ensure properly defined behavior the sprite needs to be retained at least as long as the sound controller may still need it - which cannot be reliably determined so it has to be kept around forever. This would be easier if the sound controller code had proper start and stop events instead of inferring what to do from secondary information.
Fixes#288.
