p0: Ped Handle
p1: int i | 0 <= i <= 27
p1 probably refers to the attributes configured in combatbehavior.meta. There are 13. Example:
<BlindFireChance value="0.1"/>
<WeaponShootRateModifier value="1.0"/>
<TimeBetweenBurstsInCover value="1.25"/>
<BurstDurationInCover value="2.0"/>
<TimeBetweenPeeks value="10.0"/>
<WeaponAccuracy value="0.18"/>
<FightProficiency value="0.8"/>
<StrafeWhenMovingChance value="1.0"/>
<WalkWhenStrafingChance value="0.0"/>
<AttackWindowDistanceForCover value="55.0"/>
<TimeToInvalidateInjuredTarget value="9.0"/>
<TriggerChargeTime_Near value="4.0"/>
<TriggerChargeTime_Far value="10.0"/>
-------------Confirmed by editing combatbehavior.meta:
p1:
0=BlindFireChance
1=BurstDurationInCover
3=TimeBetweenBurstsInCover
4=TimeBetweenPeeks
5=StrafeWhenMovingChance
8=WalkWhenStrafingChance
11=AttackWindowDistanceForCover
12=TimeToInvalidateInjuredTarget
16=OptimalCoverDistance