AS you wish
i have a lot of time..
but try it first:
PRESS c to create laser
PRESS v to remove it
put this in your zombie.cfg: (you can edit them)
zp_tripmine_dmg 2000.0 // human makes (2000-distance) damage to zombie
zp_tripmine_zpdmg 200.0 // zombie makes (200-distance) damage to human
zp_tripmine_hp 800.0 // zombie lasermine hp
zp_tripmine_zphp 300.0 // human lasermine hp
made in (4 minutes xd)