That's not exactly the code of the lasermine! It looks like an addon/Feature of it do destroy the lasermines in zombi plague? Or else to destroy them NOT by the zombie plague...
What i've posted is exactly from the
mine 020.sma its the standart mine before some zomies come n get it for them...

there is no function, it must be written for a team... changable to complete it for all not the "situation" with an cvar like "candestroyby" 1 enemy, 2 all... you know what i mean?!
What i dont understand is, where is at 020.sma the part where someone can destroy the mine, am i blind?! Just see the entity will removed if the mine would explode... not if it attacked by a player!
I've worte this "part" as an idea not as the special working code
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