Oh, that game me an idea to test non solid surfaces, such as glass.
Also these tripmines are coded. They are an AMXX plug in for CS AMX servers. The plugin name is tripmine023 (edited a bit to remove +dellalser function).
I know they can be blocked at the root by an other laser or a movable entity. Guess ill have to test it out.
Thanks for the idea thou. If you get any more, please submit