This was one huge mess where nothing fit together.
Also added an enhancement that the CD Audio boss theme tracks are also played when CD music is generally off, because these have no equivalent in MIDI. This needs to be checked if it's stylistically ok, though.
Sound is only partially functional, video mode completely nonfunctional, but it makes no sense adjusting them to the current backend code when it's due for replacement.
Reverted this to a sane setting, as it was in the original games and in all other games I have ever seen, i.e. there is a global setting to enable mouse view, and a button to manually trigger it. The toggle can be easily handled by flipping the CVAR directly.
The main problem here was that it triggered a few cases for mouse-less gameplay in the default case with a mouse present, because the mouseaim CVAR was no longer what the game expected.
This misguided change seems to have originated in JFDuke but by now had propagated to all the other games as well, the code was in all 4 frontends.
- hooked up all front ends with a generic message printing function so that common code can access the native message displays. This is needed for consolidation of some input actions which are mostly identical but print messages.
- preparations for a generic message system.
This was consolidated for both EDuke and RedNukem frontends, put into a class with strict access control and the length limit was lifted.
The new class will eventually allow better localization control.
Now this was magnitudes easier than the EDuke menu - NBlood's menu is actually clean and usable code but still nothing compared to a unified menu system.
This was only a crutch to let the input interface work with the original menus.
Now that the one in Blood is gone, all the conditions are no longer relevant. (Shadow Warrior never got far enough to implement this)
This was some meticulously preserved relic of bad old DOS times used to block OS facilities to close an app.
Since this has been worked around at a lower level already the variable was essentially without function but some quite bad code depended on it.
This mainly means being able to use the generic font.
This also adds more generalization to the menu sound handling, plus an option to turn menu sound off. This is motivated by the pig sounds which RR uses in the menu.
* removed some redundant functionality (e.g. Shift-F5 to change - use the console for that!)
* removed a few more leftover parts of the old music system
* savegames should not do more than resuming the music at the point of saving. (DN3D and RR only so far. Blood to be done.)
* handle music enabling/disabling in the backend, which simply knows better what to do. This was only working in the menu, so changing the CVAR had no effect.
