Posted by Howard Casto on 7, 2001 at 1:42 AM:
In Reply to: You Might Cross Post This At The Address Inside For More/Better Results... (More) posted by planetjay on 6, 2001 at 2:48 PM:
If both the expensive and el-cheapo guns use the same method, then the mame programmers might be more willing to write some custom code to support these devices. I don't know alot about the mame drivers for gun games, but this actually sounds farily theisable. All the "active" sprites on the screen would have to have a split second pallette swap to a completely white pallette whenever you hit the fire button. Oh I make it sound so simple..... Uh oh, sickness coming on again, fever raising, pink elephants returning. Oh the horror, the horror!!
: That way you'll have real MAME programmers seeing your discussion/ideas.
: : Hi,
: : your inputs are appreciated...
: : I have found the Patent of the Act Labs Light Gun and the Nintendo Zapper...They quite well explain how each gun works...
: : Both of these guns need a blank frame and a white target...
: : The Act Labs works only on a monitor and they use the synchronization signal of the monitor to increase the precision of the gun...
: : Please do not forgot Mame emulate hardware...
: : I mean by this we can know at which resolution a game is running, the beginning of a frame the end of a frame, we can even synchronize the frames, ...
: : Look in Mame32 the advanced options "Synch to monitor refresh", "Wait for Vertical synch", "Draw every frames"
: : I have checked the game Clay Pigeon Version 2.0 "claypign"
: : you can see a black frame with the white target when you use the Ctrl button to shoot the clay...
: : so I think the implementation can be done with a fair precision.
: : We can solder the gun trigger swith on the Ctrl key of a keyboard controller and send the Gun output (Zapper is the blue wire ) in the Game port.
: : We just need to figure out in Mame how to make this gun work ...
: : I think we are half way...
: : Reg