how to locate the exact position where avatar is looking

hi,

friends when i use a gun, does it finds the exact position where my avatar is looking or only the rot and then follows some constant displacement to fire the bullet.
but then i may look at infinity and fire. so how can i find the exact position where my avatar is looking ?? what if it looks at infinity ??

You can't get the specific "point" your avatar is looking at from a script. Actually you can't look at a specific point in mouselook even; only when you alt-drag on a point does that happen. Any other time you are looking in a specific DIRECTION. To know the direction you are looking all you need is a vector and the understanding that you are "looking at" every point along a ray along which that vector points. To get a unit vector in the direction the avatar is pointing from an attachment, use llRot2Fwd(llGetRot()).

Guns only go by the rotation of your avatar. Your avatar's vision is defined by the line along which they are looking; there is no concept of them focusing on a particular point along that line. Thus, you can't "look at infinity", and just in the same way you can't look 1m in front of you - there are no controls to do either.

If you really want to find the exact location of the viewpoint you can use llGetCameraPos() and llGetCameraRot() - although guns don't use these. However, even these will only give you the line of vision, not a focus point. (Using alt-look doesn't create a focus point.)

Well, it does (you can see such focus points using an Advanced menu option), but a script can't retrieve it.