Aaronjw13: Nice, thanks! I can finally strafe!
I'm having a problem with the lighting, though. I posted in the thread you linked to, but I'll mention the problem here too, anyway: in dark rooms with candlelight, the lighting seems to cause some odd colors which I don't think used to be there.
I am glad I could help you with the controls, but I fear I shall not be as useful for your new problem, as I do not remember any graphical issues aside of being a really old game, so perhaps it is just that we have forget how graphics were back then. If you
really think those are glitches and not belongings to the game, I would suggest thinkering with your DosBOX, let it be by changing config files or be using a SVN build of DOSBOX. It could also be related to your OS, to your drivers or to a combination of the above.
Nevertheless, if the color glitching is something like
this, I have fixed that for another games (like Diablo, Outlaws and Starcraft) by starting the game with windows' explorer shut down. I created a batch file which kills the explorer (downside is you cannot copy files while playing, because it belongs to explorer.exe process too), starts the game and pauses, so when you quit playing you press any key and restarts the explorer automatically.
I doubt this is your problem, but if you want to try it, you must write this code into notepad and saving as whateveryouwant.bat :
taskill -f /im explorer.exe
start "Pathtoactualshortcut.lnk"
pause
start explorer.exe
exit
I type "actual shortcut" because steam's ones are weblinks to the launcher and I am not sure if they would work. Here in GOG, the shortcut invokes conf files and dosbox. So be wary. The code might be wrong, as I am typing from memory, but more or less it is like that. But again, I
REALLY doubt that would fix it, as those games suffering this glitch suffer it on all the screen.
You might try to run the game in a window though.