Calculating damage at 20 rounds per day over 1000 days for ACs of [15, 20, 25]
========================================

    Name: Many attacks with Fiery Fist,
    Stuns per day: 0.0
    Damage per day: 641.644
    Hits per day: 45.208
    Misses per day: 54.792
    Attack penalties: [0, 0, 0, 0, -5]

========================================

    Name: High-hit Fiery Fist,
    Stuns per day: 0.0
    Damage per day: 614.348
    Hits per day: 38.847
    Misses per day: 21.153
    Attack penalties: [2, 2, 2]

========================================

    Name: Many attacks with Stunning Fist,
    Stuns per day: 6.435
    Damage per day: 568.416
    Hits per day: 47.378
    Misses per day: 52.622
    Attack penalties: [0, 0, 0, 0, -5]

========================================

    Name: High-hit Stunning Fist,
    Stuns per day: 8.902
    Damage per day: 530.728
    Hits per day: 40.802
    Misses per day: 19.198
    Attack penalties: [2, 2, 2]

#!/usr/bin/python3
import random
import json

# NPC
ac = [15,20,25]
fort_base_save = 5
stunned_ac_loss = 2

# PC
bab = 6
level = 9

# Misc
days = 1000
rounds = 20


# Fiery Fist
def damage_roll_a(option):
    droll = random.randint(2,16)
    d6fire = 0
    if option['attack_i'] == 0 and option['stuns'] > 0:
        option['stuns'] -= 1
        option['is_stunned'] = True
    if option['is_stunned']:
        d6fire = random.randint(1,6)
    option['total_dmg'] += (droll + option['str_mod'] + d6fire)
    return option

# Stunning fist
def damage_roll_b(option):
    droll = random.randint(2,16)
    if not option['is_stunned'] and option['attack_i'] == 0 and\
            option['stuns'] > 0:
        # Try to stun
        fort_roll = fort_base_save + random.randint(1,20)
        if option['stun_save'] > fort_roll:
            option['is_stunned'] = True
            option['total_stuns'] += 1
        option['stuns'] -= 1
    option['total_dmg'] += (droll + option['str_mod'])
    return option

def calc_hits(option):
    hits = 0
    misses = 0
    total_dmg = 0
    dmg = option['dmg']
    str_mod = option['str_mod']
    attacks = option['attacks']
    stuns_per_day = option['stuns'] + 0

    for d in range(days):

        option['stuns'] = stuns_per_day

        for r in range(rounds):

            option['attack_i'] = 0
            random.shuffle(option['ac'])
            option['is_stunned'] = False

            for a in attacks:
                crit = False
                d20 = random.randint(1,20) 
                if d20 == 20:
                    crit == True

                hit_roll = d20 + bab + str_mod + a 
                this_ac = option['ac'][0]
                if option['is_stunned']:
                    this_ac -= option['stunned_ac_loss']

                if hit_roll >= this_ac:
                    hits += 1
                    option = dmg(option)
                    if crit:
                        hits += 1
                        option = dmg(option)
                else:
                    misses += 1

                option['attack_i'] += 1

    option['dmg_per_day'] = option['total_dmg'] / days
    option['stuns_per_day'] = option['total_stuns'] / days
    option['hits_per_day'] = hits / days
    option['misses_per_day'] = misses / days

    print("="*40)
    print("""
    Name: %(name)s,
    Stuns per day: %(stuns_per_day)s
    Damage per day: %(dmg_per_day)s
    Hits per day: %(hits_per_day)s
    Misses per day: %(misses_per_day)s
    Attack penalties: %(attacks)s
    """%(option))

option1 = dict(
    name="Many attacks with Fiery Fist",
    attacks=[0,0,0,0,-5],
    ac=ac,
    stuns=10,
    stun_save=0,
    stunned_ac_loss=0,
    total_stuns=0,
    str_mod=3,
    dmg=damage_roll_a,
    total_dmg=0,
)

option2 = dict(
    name="High-hit Fiery Fist",
    attacks=[2,2,2],
    ac=ac,
    str_mod=4,
    stuns=16,
    stun_save=0,
    stunned_ac_loss=0,
    total_stuns=0,
    dmg=damage_roll_a,
    total_dmg=0,
)

option3 = dict(
    name="Many attacks with Stunning Fist",
    attacks=[0,0,0,0,-5],
    ac=ac,
    stuns=10,
    stun_save=10+level+1,
    stunned_ac_loss=stunned_ac_loss,
    total_stuns=0,
    str_mod=3,
    dmg=damage_roll_b,
    total_dmg=0,
)

option4 = dict(
    name="High-hit Stunning Fist",
    attacks=[2,2,2],
    ac=ac,
    str_mod=4,
    stuns=10,
    stun_save=10+level+2+2+1,
    stunned_ac_loss=stunned_ac_loss,
    total_stuns=0,
    dmg=damage_roll_b,
    total_dmg=0,
)


print("Calculating damage at %s rounds per day over %s days for ACs of %s"%(rounds, days, ac))
calc_hits(option1)
calc_hits(option2)
calc_hits(option3)
calc_hits(option4)