being near c4 to blow it, not possible,
limit the number of C4's that can be laid at 1 time:
ObjectTemplate.activeSafe GenericFireArm c4_explosives
ObjectTemplate.fire.maxProjectilesInWorld X
X = numnber of C4's allowed active, laying more than this
causes them to delete the oldest one laid when that
number is exceeded
alternatively there is a Python script by
BlackYoda from
www.unholyplayground.com that will stop people from laying C4 on noncaps