Do me a favor and replace the minemonster NPC file with this:
Minemonster
{
playerModel minemonster
reactions 3
aim 1
move 3
aggression 3
evasion 1
intelligence 5
playerTeam enemy
enemyTeam player
class minemonster
snd mine
yawSpeed 160
runSpeed 210
walkSpeed 50
hFOV 120
vfov 45
height 30
width 9
snd mine
health 40
}
I just did and the mine monster started to attack me as it should and doing a fuck ton of damage too. My theory is that the class shouldn't be CLASS_MINEMONSTER, but just "minemonster". Either that, or the NPC gets all buggy because in JA it has WP_MELEE set as a weapon. I'm gonna record a video that shows how ridiculous that is. In MP (at least with Open JK, don't know with base JA) , the NPCs are as strong as in JO if there are point combats and waypoints.