Wow. Doesn't look as good as ACT LABS' guns, but the thing comes with a FREAKING RELOAD PEDAL. I want one.
> Here is another interesting light gun if anyone wants to check it out: > > http://www.lik-sang.com/info.php?category=0&products_id=1429&; > > > On Sunday, October 19, 2003, at 01:48 PM, Ben Collins wrote: > > > So I got my ACT LABS PC TV Lightguns in finally. Started working on > > getting them working with xmame, and discovered a few things. > > > > First, these things do in fact work like mice. Just like the docs say. > > Problem is that when Linux exports a mouse, it exports things as a > > mouse. Mice, by definition are relative pointing devices. IOW, the > > values read are delta's from the previous position, denoting motion. > > > > The Linux mouse driver does in fact read the lightguns as absolute > > pointing devices, but then converts that to relative motion deltas for > > the mouse interface, which makes sense. > > > > Problem is, this is useless for what we want to do with the lightguns. > > We want absolute positions. > > > > So I chose to implement an event reader from /dev/input/event* devices. > > It will make use of any device that outputs absolute X and Y axis > > values. This is primarily USB devices, but in actuality, any device can > > export an event/input device. The only requirement is that it exports > > EV_ABS events for X and Y axis. Heck, this could even be a tablet or > > touchpad. > > > > Also, by doing this, we exclude dependence on a certain UI target (e.g. > > SDL, SVGA, X11). It can be used by any interface. > > > > There's one thing that I am unsure of, and that is whether other > > lightguns export the buttons the same way. For the ACT LABS guns, > > shooting offscreen, or pressing the side button, causes a BTN_SIDE > > event > > code. Shooting directly at the screen produces an X and Y axis event, > > aswell as a BTN_MIDDLE event. For b2 (BTS_SIDE), I set the abs values > > to > > -128,-128 and produce a normal b1 event. I made the shots correspond to > > joy-button1 codes. This seems to make the most sense. > > > > One quirk I am experiencing right now is that shooting offscreen does > > not get the cursor to the top-left position quick enough before the > > shot > > is registered. So sometimes I have to shoot offscreen twice to get the > > "reload" affect. > > > > After applying this patch, editing makefile.unix to enable the support, > > you then add lines like this to xmamerc: > > > > evabs-lightgun1 /dev/input/event1 > > evabs-lightgun2 /dev/input/event2 > > > > The actual event* device you use will vary. May take awhile to figure > > out which one it is, since some devices export several event devs. I am > > planning on making "auto" an option for the device, and let it scan > > available ones for usage. > > > > All-in-all, it's really nice to be able to play Area 51 with a real > > gun. > > Some games don't seem to work well with lightgun support, but I don't > > think that's the fault of the gun or my code, since it does the right > > thing. > > > > -- > > Debian - http://www.debian.org/ > > Linux 1394 - http://www.linux1394.org/ > > Subversion - http://subversion.tigris.org/ > > WatchGuard - http://www.watchguard.com/ > > <abs-event-lightgun.diff> > > > _______________________________________________ > Xmame mailing list > [EMAIL PROTECTED] > http://toybox.twisted.org.uk/mailman/listinfo/xmame > _______________________________________________ Xmame mailing list [EMAIL PROTECTED] http://toybox.twisted.org.uk/mailman/listinfo/xmame
