Final Fantasy IV (everything8215's disassembly)

At the start of a battle, each combatant's base timer duration is 50 times a reference party member's modified agility over 10 times its own modified agility, at least 1; the reference is the first present party member whose character ID is 1 or $0B, or failing that the first present one, so a combatant with twice the agility waits half as long between turns. ff4/action-timer

About: Final Fantasy IV Active Time Battle

{
 "numerator": 50,
 "denominator": 10,
 "min": 1
}

Cited by: Active Time Battle, Final Fantasy IV, Turn order

BattleMain waits 1, 2, 4, 6, 8, or 11 frames by the battle speed setting (BattleSpeedTbl plus one), holding while the game is paused or in wait mode, then decrements every combatant's timers (DecTimers) and runs a pending action. An action timer's duration is the base duration times a speed modifier over 16, and 16 is the normal modifier. ff4/battle-tick

About: Final Fantasy IV Active Time Battle

{
 "framesPerTick": [
  1,
  2,
  4,
  6,
  8,
  11
 ],
 "normalSpeedModifier": 16
}

Cited by: Active Time Battle, Final Fantasy IV, Turn order

A Fight command makes one percentage roll per point of the attacker's attack multiplier and counts the rolls under its hit rate; the target rolls once per point of its defense multiplier and blocks one hit for each roll under its defense rate. The hits left after blocking multiply one damage roll, and none left is a miss. ff4/hits

About: Final Fantasy IV Multi-hit attack

Cited by: Final Fantasy IV

A character's attack multiplier, the number of hit rolls, is strength ÷ 8 + agility ÷ 16 + 1; the defense multiplier is agility ÷ 8 plus level ÷ 16 times the shield's multiplier. ff4/attack-multiplier

About: Final Fantasy IV Multi-hit attack

{
 "strengthDivisor": 8,
 "agilityDivisor": 16,
 "plus": 1
}

Cited by: Final Fantasy IV, Multi-hit attack

CalcDmg takes attack power plus a random 0 to half of it, applies the elemental and creature-type multipliers, adds the crit bonus on a critical, and subtracts defense (floored at 0); that times the net hits, divided by the number of targets, is held to 1–9,999. A Fight command has one target. ff4/damage

About: Final Fantasy IV Damage formula

{
 "spread": 0.5,
 "cap": 9999,
 "min": 1
}

Cited by: Damage formula, Final Fantasy IV

A Fight command rolls once for a critical: a percentage roll under the attacker's crit rate adds its crit bonus to the damage before defense. Each character carries a crit rate and bonus of their own (the field code loads Cecil's from CharProp); dual-wielding doubles the rate, which falls to 99 only when the doubling overflows a byte (a rate of 50–127 doubles to 100–254), and adds half the left hand's attack to the bonus, and a bow triples a rate capped at 33 and adds the arrows' attack. ff4/critical

About: Final Fantasy IV Critical hit

{
 "dualWieldRate": 2,
 "bowRate": 3,
 "maxRate": 99
}

Cited by: Critical hit, Final Fantasy IV

A physical attack's element is tested against the target's very weak, weak, immune, and strong elements in that order, and the first match sets a damage multiplier of 4×, 2×, 0, or ½. ff4/elements

About: Final Fantasy IV Elemental weakness

{
 "veryWeak": 4,
 "weak": 2,
 "immune": 0,
 "strong": 0.5
}

Cited by: Final Fantasy IV

Holding L and R escapes, with no roll, once the run counter reaches 0, if the battle allows running and some party member can act. The counter starts at $FF (no escape) and a character's turn sets it to 0, except against a monster of level 97, 98, or 99, where it starts at 3, 7, or 10 and drops by one each battle tick while L and R are held; at level 99 it resets to 15 whenever they are let go. ff4/run

About: Final Fantasy IV Fleeing

{
 "level97": 3,
 "level98": 7,
 "level99": 10,
 "level99Reset": 15
}

Cited by: Final Fantasy IV, Fleeing

On the overworld, each step reads a rate from an 8 × 8 grid of map regions (7, 8, or 10) and starts a battle when a byte from a fixed random table, plus an offset that grows by $11 each time the step counter wraps, is below it. ff4/encounter-rate

About: Final Fantasy IV Random encounter

{
 "overworldRates": [
  7,
  8,
  10
 ],
 "of": 256
}

Cited by: Final Fantasy IV, Random encounter

Final Fantasy IV keeps Final Fantasy III's physical attack: percentage rolls per point of an attack multiplier, the target's successful evade rolls subtracted, and one damage roll of attack plus 0 to half of it, with the crit bonus added before defense, multiplied by the net hits and capped at 9,999. ff4/keeps-ff3-hits

About: Final Fantasy IV Multi-hit attack

Cited by: Damage formula, Final Fantasy IV, Hit chance, Multi-hit attack

Final Fantasy III's physical attack has two elemental outcomes besides normal, double for a weakness and half for the target's other element byte; Final Fantasy IV adds very weak (4×) and immune (0) to weak (2×) and strong (½). ff4/elements-changes-ff3

About: Final Fantasy IV Elemental weakness

Cited by: Elemental weakness, Final Fantasy IV