Prevent projectiles from unreasonably hitting the same target more than once

[Enet4]

This bug is also present in Notrium 1.4.2.

Certain projectiles that go through enemies (e.g. VC laser) have a chance to hit the target multiple times, which overpowers those weapons and often produces unexpected frustrating outcomes when dealing with an enemy with them (e.g. marine with VC stun laser).