Update: 0.6 released. Removes debugging crap and the like
You may have noticed that when playing with mouselook with the original Blood, Redneck Rampage, Shadow Warrior or Duke3D executables it feels awful. This is because of some crappy filtering code that is implemented on all of them that stops both axes from being updated at the same time, giving preference to the one with the most velocity.
Using 3D Realm's external controller driver code as a base I put together a mouse driver that doesn't have that filtering and supports the above mentioned games. If anyone knows of any more games that use 3D Realms external driver hook message me so I can support it please!
I've tested it only using DOSBox, however there shouldn't be a reason why it wouldn't work under a normal DOS environment.
I released v0.4 a while ago but it was pretty broken since it wouldn't parse command line parameters through the the game executable. Now it does and as a bonus supports a bunch more games. You can now have the fixed mouselook in multiplayer!
Grab it in the downloads section here: http://swisscm.duke4.net
Remember to read README.TXT for information on setting this up. Oh, and Atari? Release the bloody source code already!

Thanks!

Thanks a lot!
Is there any way of getting this to work with Cryptic Passage? I can only load the base game through Setup and have compatibility issues with other methods I've tried.

Thanks a bunch!

Just to ask - is there any way to get Blood to remember to invert the mouse using this? Currently I have to set this in the options every time I start it up.

It seems to run fine if you replace autoexec line in dosboxBlood_addon.conf that reads
"cryptic.exe" to "BMOUSE.EXE LAUNCH CRYPTIC.EXE". It's almost right at the bottom.

Ah, thank you!

Sorta works. It works fine until I make the window fullscreen, where it goes back to being awful feeling. Any movement that's not very fast doesn't register at all, so it's just as jerky as without this.

In the setup, go into Advance Control Setup > Mouse > Y Axis Scale
Set it to a negative number.

Updated to 0.6. See first post for updated download link.

Perfect! Thanks a lot.

Makes using DOS more bearable. Thanks a lot.
I'd still like to see something like eduke32 though...

This method does not work with redneck rampage suckin grits on route 66 D:.

SwissCM - I added a link to the bmouse06.zip on the "Online Multiplayer" thread to keep a list of utlilties for multiplayer (online and LAN) and other fixes that might help.

I figured I'd try this, see if it made enough difference to perhaps be worth hassling with.
WOW
Blood feels a zillion times smoother now! The whole experience is greatly improved by this mouselook tweak.