Difference between revisions of "FF7/DamageFormula"

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m (Accuracy Functions: mis-read the statement and learned what that unknown was :D)
m (0: Physical Accuracy Check: There is an enemy check on the Dex bonus that I didn't notice before. Physical Chance is unaffected.)
 
(16 intermediate revisions by 4 users not shown)
Line 1: Line 1:
== Damage Formula's description ==
+
==Accuracy Function considerations==
 
+
Each of the upper nybble of the damage calculation determines what checks are done to accuracy of the action and whether or not it will connect, be critical or miss. Here are the functions in order processed based on the upper nybble:
<!-- 0X = 8 none (always hit)-->
 
<!-- 1X = 0, 2 physical, isCritical-->
 
<!-- 2X = 1 magical-->
 
<!-- 3X = 3 none (always hit)-->
 
<!-- 4X = 4 none (always hit)-->
 
<!-- 5X = 5 none (always hit)-->
 
<!-- 6X = 0, 2 physical, isCritical-->
 
<!-- 7X = 1 magical-->
 
<!-- 8X = 7 LevelBasedAccuracy-->
 
<!-- 9X = 6 manipulate-->
 
<!-- AX = 0, 2 physical, isCritical-->
 
<!-- BX = 0 physical-->
 
<!-- CX = 8 none (always hit)-->
 
<!-- DX = 8 none (always hit)-->
 
<!-- EX = 8 none (always hit)-->
 
<!-- FX = 8 none (always hit)-->
 
 
 
0x11:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
Damage Function 0x1
 
 
 
 
 
0xA0:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
Damage Function 0x1
 
 
 
damage = damage * (1 + number_of_status1 + 2 * number_of_status2).
 
 
 
number_of_status1 are calculated as sum of attacker statuses darkness, slow, silence, sadness, poison, near death.
 
 
 
number_of_status2 are calculated as sum of attacker statuses death sentence, slow-numb.
 
 
 
 
 
 
 
0xA1:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
Damage Function 0x1
 
 
 
if current hp less then max hp / 4 then damage = damage * 2.
 
 
 
if attacker in death sentence then damage = damage * 4.
 
 
 
 
 
 
 
0xA2:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
Damage Function 0x1
 
 
 
damage = damage * (1 + number_of_dead_player_units).
 
 
 
 
 
 
 
0xA3:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
power_modifier = total_level_of_all_enemy_target / number_of_enemy_target.
 
 
 
(this only use enemy units from 4 to 10 that includes in target mask after all preparation)
 
 
 
Damage Function 0x1
 
 
 
 
 
 
 
0xA4:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
power_modifier = 1 + (((current_hp * 3) / max_hp) * power_modifier).
 
 
 
Damage Function 0x1
 
 
 
 
 
 
 
0xA5:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
power_modifier = 1 + (((current_mp * 3) / max_mp) * power_modifier).
 
 
 
Damage Function 0x1
 
 
 
 
 
 
 
0xA6:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
power_modifier = 1 + (((total_ap / 10000) * power_modifier) / 16).
 
 
 
(total_ap is no more than ap needed for max star, so underwater materia won't work)
 
 
 
Damage Function 0x1
 
 
 
 
 
 
 
 
 
0xA7:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
power_modifier = 10 + (((number_of_kills / 128) * power_modifier) / 16).
 
 
 
Damage Function 0x1
 
 
 
 
 
 
 
0xA8:
 
 
 
Prepare Function 0x0 (calculate physical hit chance)
 
 
 
Prepare Function 0x2 (calculate critical chance)
 
 
 
power_modifier = 1 + (((limit_bar_value * (limit_level + 1) / 16) * power_modifier) / 16).
 
 
 
Damage Function 0x1
 
  
 +
{| border="1" cellspacing="1" cellpadding="3" style="border: 1px solid black; border-collapse: collapse;"
 +
! style="background:rgb(204,204,204)" | Upper Nybble
 +
! style="background:rgb(204,204,204)" | Functions
 +
|-
 +
| 0
 +
| None (always hits)
 +
|-
 +
| 1
 +
| [[FF7/DamageFormula#0:_Physical_Accuracy_Check|Physical Accuracy]], [[FF7/DamageFormula#2:_Critical_Hit_Check|Critical Check]]
 +
|-
 +
| 2
 +
| [[FF7/DamageFormula#1:_Magical_Accuracy_Check|Magical Accuracy]]
 +
|-
 +
| 3
 +
| Dummy [3] (always hits)
 +
|-
 +
| 4
 +
| Dummy [4] (always hits)
 +
|-
 +
| 5
 +
| Dummy [5] (always hits)
 +
|-
 +
| 6
 +
| [[FF7/DamageFormula#0:_Physical_Accuracy_Check|Physical Accuracy]], [[FF7/DamageFormula#2:_Critical_Hit_Check|Critical Check]]
 +
|-
 +
| 7
 +
| [[FF7/DamageFormula#1:_Magical_Accuracy_Check|Magical Accuracy]]
 +
|-
 +
| 8
 +
| [[FF7/DamageFormula#7:_Level-based_Accuracy|Level-based Accuracy]]
 +
|-
 +
| 9
 +
| [[FF7/DamageFormula#6:_Manipulate_Accuracy_.28intended_solely_for_playable_characters.29|Manipulate]]
 +
|-
 +
| A
 +
| [[FF7/DamageFormula#0:_Physical_Accuracy_Check|Physical Accuracy]], [[FF7/DamageFormula#2:_Critical_Hit_Check|Critical Check]]
 +
|-
 +
| B
 +
| [[FF7/DamageFormula#0:_Physical_Accuracy_Check|Physical Accuracy]]
 +
|-
 +
| C
 +
| None (always hits)
 +
|-
 +
| D
 +
| None (always hits)
 +
|-
 +
| E
 +
| None (always hits)
 +
|-
 +
| F
 +
| None (always hits)
 +
|}
  
 
=Damage Calculations=
 
=Damage Calculations=
For standard damage functions
+
These are the damage functions according to an unmodded FF7-ENG 1.02 (1998)
 +
==Standard Formulae==
 +
===X0:===
 +
''0x5DE5C0''
 +
<pre>Sets Target's 02h flag to 1. (Unknown effect)</pre>
  
X0:
+
===X1:===
<pre>Sets Target's 02h flag to 1. (Unknown effect)</pre>
+
''0x5DE5DF''
----
 
X1:
 
 
<pre>If Attack Property "Always Critical" is Set
 
<pre>If Attack Property "Always Critical" is Set
 
Set Critical Damage Flag
 
Set Critical Damage Flag
Line 160: Line 72:
 
z = Actor's (M)Attack + ( x * y )
 
z = Actor's (M)Attack + ( x * y )
 
z = z * ( 512 - target's defense ) * Attack's Power
 
z = z * ( 512 - target's defense ) * Attack's Power
Damage = z / 4096
+
Damage = z >> 13
 +
//This is a bit-shift left by 13 which is mathematically equivalent to dividing by 8192, but it's important to note that it doesn't actually divide as this is the source of the damage overflow glitch
  
 
If Critical Damage Flag is set
 
If Critical Damage Flag is set
Line 207: Line 120:
 
End If
 
End If
 
Damage = Variance( Damage )</pre>
 
Damage = Variance( Damage )</pre>
----
+
 
X2:
+
===X2:===
 +
''0x5DE9B8''
 
<pre>
 
<pre>
 
multiNoSplit = ( ( ( Attack's Target Flags AND Ch ) - 4 ) == 0 ? 1 : 0 )
 
multiNoSplit = ( ( ( Attack's Target Flags AND Ch ) - 4 ) == 0 ? 1 : 0 )
 
Base = (Actor's Attack + Actor's Level) * 6
 
Base = (Actor's Attack + Actor's Level) * 6
Damage = (512 - Target's Defense) * Base * Attack's Power
+
Damage = (512 - Target's Defense) * Base * Attack's Power / 8192
 
Damage = Sadness( Damage )
 
Damage = Sadness( Damage )
 
Damage = SplitDamage( Damage, multiNoSplit )
 
Damage = SplitDamage( Damage, multiNoSplit )
Line 218: Line 132:
 
Damage = Variance( Damage )
 
Damage = Variance( Damage )
 
</pre>
 
</pre>
----
+
 
X3:
+
===X3:===
 +
''0x5DEA6D''
 
<pre>
 
<pre>
 
If Attack Properties Damage MP is clear
 
If Attack Properties Damage MP is clear
Line 232: Line 147:
 
Damage = Damage / 2
 
Damage = Damage / 2
 
End If</pre>
 
End If</pre>
----
+
 
X4:
+
===X4:===
 +
''0x5DEAF7''
 
<pre>If Attack Properties Damage MP is clear
 
<pre>If Attack Properties Damage MP is clear
 
Damage = Target's MHP
 
Damage = Target's MHP
Line 246: Line 162:
 
End If
 
End If
 
</pre>
 
</pre>
----
+
 
X5:
+
===X5:===
 +
''0x5DEB81''
 
<pre>
 
<pre>
 
Damage = (Actor's (M)Attack + Actor's Level) * 6 + (Attack's Power * 22)
 
Damage = (Actor's (M)Attack + Actor's Level) * 6 + (Attack's Power * 22)
Line 253: Line 170:
 
Damage = Barrier( Damage )
 
Damage = Barrier( Damage )
 
Damage = Variance( Damage )</pre>
 
Damage = Variance( Damage )</pre>
----
+
 
X6:
+
===X6:===
 +
''0x5DEBE5''
 
<pre>Damage = Attack's Power * 20</pre>
 
<pre>Damage = Attack's Power * 20</pre>
----
+
 
X7:
+
===X7:===
 +
''0x5DEC0A''
 
<pre>
 
<pre>
 
Damage = ( ( 512 - Target's Def ) * Attack's Power / 32 )
 
Damage = ( ( 512 - Target's Def ) * Attack's Power / 32 )
 
Damage = Variance( Damage )
 
Damage = Variance( Damage )
 
</pre>
 
</pre>
----
+
 
X8:
+
===X8:===
 +
''0x5DEC52''
 
<pre>
 
<pre>
 
If ActionData[0x230] AND 40h
 
If ActionData[0x230] AND 40h
Line 271: Line 191:
 
End If
 
End If
 
//presumably this checks if the target heals from restore element and will either recover or kill based on the result</pre>
 
//presumably this checks if the target heals from restore element and will either recover or kill based on the result</pre>
----
+
 
X9:
+
===X9:===
 +
''0x5DEC8A''
 
<pre>
 
<pre>
 
Actor's Attack = Actor's Strength * 2
 
Actor's Attack = Actor's Strength * 2
 
Use Damage X1 with adjusted stat
 
Use Damage X1 with adjusted stat
 
</pre>
 
</pre>
----
+
 
XA:
+
===XA:===
 +
''0x5DECAA''
 
<pre>Damage = ( Attack's Power + Number of Targets - 1 ) / Number of Targets</pre>
 
<pre>Damage = ( Attack's Power + Number of Targets - 1 ) / Number of Targets</pre>
  
 
==Additional Checks==
 
==Additional Checks==
Sadness( Damage ):
+
===Sadness( Damage )===
 +
''0x5DE958''
 
<pre>
 
<pre>
 
If Target's Status includes Sadness
 
If Target's Status includes Sadness
Line 288: Line 211:
 
End If
 
End If
 
Return Damage</pre>
 
Return Damage</pre>
----
+
 
SplitDamage( Damage, multiNoSplit ):
+
===SplitDamage( Damage, multiNoSplit )===
 +
''0x5DE8F4''
 
<pre>
 
<pre>
 
If multiNoSplit == 0
 
If multiNoSplit == 0
Line 308: Line 232:
 
Return Damage
 
Return Damage
 
</pre>
 
</pre>
----
+
 
Barrier( Damage ):
+
===Barrier( Damage )===
 +
''0x5DE82C''
 
<pre>
 
<pre>
 
If Attack Property "Physical" is 0
 
If Attack Property "Physical" is 0
Line 330: Line 255:
 
Return Damage
 
Return Damage
 
</pre>
 
</pre>
----
+
 
Variance( Damage ):
+
===Variance( Damage ):===
 +
''0x5DE988''
 
<pre>
 
<pre>
Damage = Damage ([0..255] + 3841) / 4096 //from RNGLUT in KERNEL.BIN
+
Damage = Damage ([0..255] + 3841) >> 12 //from RNGLUT in KERNEL.BIN
 +
//Again, we have another chance for overflow.
  
 
If Damage == 0
 
If Damage == 0
Line 341: Line 268:
 
</pre>
 
</pre>
  
 
+
==Secondary Damage Formulae==
=Secondary Damage Formulae=
+
===X0:===
X0:
+
''0x5DECFB''
 
<pre>
 
<pre>
 
Damage = Attacker's HP
 
Damage = Attacker's HP
 
</pre>
 
</pre>
X1:
+
===X1:===
 +
''5DED1E''
 
<pre>
 
<pre>
Damage = Target's MHP - Target's HP
+
Damage = Attacker's MHP - Attacker's HP
 
</pre>
 
</pre>
X8:
+
===X8:===
 +
''0x5DED73''
 
<pre>
 
<pre>
 
Dice_Count = Attacker's Level / 10
 
Dice_Count = Attacker's Level / 10
Line 389: Line 318:
 
Damage = value_repeat * 100 * total_dice_roll
 
Damage = value_repeat * 100 * total_dice_roll
 
</pre>
 
</pre>
X9:
+
===X9===
 +
''0x5DEEEF''
 
<pre>
 
<pre>
 
Damage = Number of Successful Escapes
 
Damage = Number of Successful Escapes
 
</pre>
 
</pre>
XA:
+
===XA===
 +
''0x5DEF1D''
 
<pre>
 
<pre>
 
Damage = Target's HP - 1
 
Damage = Target's HP - 1
 
</pre>
 
</pre>
XB:
+
===XB===
 +
''0x5DEF44''
 
<pre>
 
<pre>
 
Damage = (Game Time Hours * 100) + (Game Time Minutes)
 
Damage = (Game Time Hours * 100) + (Game Time Minutes)
 
</pre>
 
</pre>
XC:
+
===XC===
 +
''0x5DEF88''
 
<pre>
 
<pre>
 
Damage = Target's Kill Count * 10
 
Damage = Target's Kill Count * 10
Line 407: Line 340:
 
//This will cause a memory leak if done on enemies
 
//This will cause a memory leak if done on enemies
 
</pre>
 
</pre>
 
+
===XD===
 +
''0x5DEFDD''
 +
<pre>
 +
If target is playable character
 +
MateriaCount = 0;
 +
For ( MateriaLoop = 0; MateriaLoop < 8; MateriaLoop++ )
 +
If target has materia in weapon slot [MateriaLoop] then MateriaCount++
 +
If target has materia in armor slot [MateriaLoop] then MateriaCount++
 +
Loop
 +
Damage = MateriaCount * 1111
 +
End If
 +
</pre>
  
 
=Accuracy Functions=
 
=Accuracy Functions=
 
The point of these is to set the "attack will miss" flag in the current action memory structure.
 
The point of these is to set the "attack will miss" flag in the current action memory structure.
  
0: Physical Accuracy Check
+
===0: Physical Accuracy Check===
<pre>
+
''0x5DDBB0''
todo
+
<pre>;For the purposes of this code, "Dex" means the adjusted Dexterity of the actor/target if any in-battle dex bonuses have been granted.
It's long so I'll tackle it when I have a lot of time on my hands
+
;Same holds for the Physical Evade. Physical Hit rate has no in-game bonus opportunities.
</pre>
+
 
 +
Check_For_Cover()
 +
 
 +
HitChance = -1;
 +
 
 +
If "Always connect" flag set then HitChance = 255;
 +
 
 +
If target has one of the following statuses (Death, Sleep, Confu, Stop, Petrify, Manipulate, Paralysis) then
 +
Remove Sleep status
 +
Remove Confu status
 +
Remove Manipulate status
 +
HitChance = 255
 +
End If
 +
 
 +
If action is flagged as "always hit" then HitChance = 255;
 +
 
 +
Physical Chance = (Actor's Dex >> 2) + action physical hit rate
 +
If Actor is enemy then
 +
Actor's evade = Actor's Physical evade
 +
else
 +
Actor's evade = (Actor's Dex >> 2) + Actor's Physical evade
 +
End If
 +
If Target is enemy then
 +
Target's evade = Target's Physical evade
 +
Else
 +
Target's evade = (Target's Dex >> 2) + Target's Physical evade
 +
End If
 +
 
 +
If HitChance = -1 Then
 +
HitChance = Physical Chance + Actor's evade - Target's evade
 +
HitChance = FuryAdjust(HitChance)
 +
End If
 +
 
 +
If HitChance = 0 then HitChance = 1
 +
 
 +
Luck Chance = [0..99]
 +
If (Actor's Luck / 4) > Luck Chance Then
 +
HitChance = 255 ;Lucky Hit
 +
Else
 +
If Actor is Player Character targetting an enemy Then
 +
If (Target's Luck / 4) > Luck Chance
 +
HitChance = 0 ;Lucky Dodge
 +
End If
 +
End If
 +
End If
 +
 
 +
Miss Chance = (([0..65535] * 99) / 65535) + 1 ;essentially [1..100]
 +
if HitChance < Miss Chance then
 +
Set Miss flag
 +
End If</pre>
 +
 
 +
====Check_For_Cover====
 +
This is where the game checks if the target is covered under a "cover"ing ally.
 +
It only applies to Player Characters
 +
It might be more complicated than I'm seeing, but that is definitely ONE of its functions
 +
 
 +
====FuryAdjust(HitChance)====
 +
<pre> If HitChance < 255 then
 +
If Actor is in Fury Status
 +
HitChance = HitChance - ((HitChance * 3) / 10)
 +
End If
 +
End If
 +
return HitChance </pre>
  
1: Magical Accuracy Check
+
===1: Magical Accuracy Check===
 +
''0x5DDE5E''
 
<pre>
 
<pre>
 
acc = Action's Accuracy
 
acc = Action's Accuracy
Line 440: Line 447:
 
</pre>
 
</pre>
  
2: Critical Hit Check
+
===2: Critical Hit Check===
 +
''0x5DDF8E''
 
<pre>
 
<pre>
 
If attack does not miss then
 
If attack does not miss then
Line 460: Line 468:
 
3, 4, and 5 don't exist. Since they don't set miss they will always hit.
 
3, 4, and 5 don't exist. Since they don't set miss they will always hit.
  
6: Manipulate Accuracy (intended solely for playable characters)
+
===6: Manipulate Accuracy (intended solely for playable characters)===
 +
''0x5DE0D0''
 
<pre>
 
<pre>
 
int ally_loop;
 
int ally_loop;
Line 506: Line 515:
 
This doesn't actually place the target in the manipulate status. That happens elsewhere.
 
This doesn't actually place the target in the manipulate status. That happens elsewhere.
  
7: Level-based Accuracy
+
===7: Level-based Accuracy===
 +
''0x5DE08A''
 
<pre>
 
<pre>
 
If Action's Accuracy > 0 then
 
If Action's Accuracy > 0 then

Latest revision as of 16:16, 20 May 2021

Accuracy Function considerations

Each of the upper nybble of the damage calculation determines what checks are done to accuracy of the action and whether or not it will connect, be critical or miss. Here are the functions in order processed based on the upper nybble:

Upper Nybble Functions
0 None (always hits)
1 Physical Accuracy, Critical Check
2 Magical Accuracy
3 Dummy [3] (always hits)
4 Dummy [4] (always hits)
5 Dummy [5] (always hits)
6 Physical Accuracy, Critical Check
7 Magical Accuracy
8 Level-based Accuracy
9 Manipulate
A Physical Accuracy, Critical Check
B Physical Accuracy
C None (always hits)
D None (always hits)
E None (always hits)
F None (always hits)

Damage Calculations

These are the damage functions according to an unmodded FF7-ENG 1.02 (1998)

Standard Formulae

X0:

0x5DE5C0

Sets Target's 02h flag to 1. (Unknown effect)

X1:

0x5DE5DF

If Attack Property "Always Critical" is Set
	Set Critical Damage Flag
End If

x = ( Actor's Level * Actor's (M)Attack ) / 32
y = ( Actor's Level + Actor's (M)Attack ) / 32
z = Actor's (M)Attack + ( x * y )
z = z * ( 512 - target's defense ) * Attack's Power
Damage = z >> 13
//This is a bit-shift left by 13 which is mathematically equivalent to dividing by 8192, but it's important to note that it doesn't actually divide as this is the source of the damage overflow glitch

If Critical Damage Flag is set
	Damage = Damage * 2
End If

If Actor's Statuses include Berserk
	Damage = Damage * 3 / 2
End If

Long_Range = 0
If Target is in Back Row
	Set Long_Range = 1
End If

If Attack is Short Range OR Command is Enemy Attack
	If Actor is in Back Row
		Long_Range = 1
	End If
Else
	Long_Range = 0
End If

If Long_Range != 0
	Damage = Damage / 2
End If

If Target is Defending
	Damage = Damage / 2
End If

If Target's Back is exposed
	Damage = Damage * ( Target's Back Attack Modifier / 8 )
End If

If Actor's Statuses includes Frog
	Damage = Damage / 4
End If

Damage = Sadness( Damage )
Damage = Split( Damage, 0 )
Damage = Barrier( Damage )
  
If Actor's Statuses include Mini
	Damage = 0
End If
Damage = Variance( Damage )

X2:

0x5DE9B8

multiNoSplit = ( ( ( Attack's Target Flags AND Ch ) - 4 ) == 0 ? 1 : 0 )
Base = (Actor's Attack + Actor's Level) * 6
Damage = (512 - Target's Defense) * Base * Attack's Power / 8192
Damage = Sadness( Damage )
Damage = SplitDamage( Damage, multiNoSplit )
Damage = Barrier( Damage )
Damage = Variance( Damage )

X3:

0x5DEA6D

If Attack Properties Damage MP is clear
	Damage = Target's HP
Else
	Damage = Target's MP
End If

Damage = Damage * Attack's Power / 32

If ActionData[AC] != 0 (?)
	Damage = Damage / 2
End If

X4:

0x5DEAF7

If Attack Properties Damage MP is clear
	Damage = Target's MHP
Else
	Damage = Target's MMP
End If

Damage = Damage * Attack's Power / 32

If ActionData[AC] != 0 (?)
	Damage = Damage / 2
End If

X5:

0x5DEB81

Damage = (Actor's (M)Attack + Actor's Level) * 6 + (Attack's Power * 22)
Damage = SplitDamage( Damage )
Damage = Barrier( Damage )
Damage = Variance( Damage )

X6:

0x5DEBE5

Damage = Attack's Power * 20

X7:

0x5DEC0A

Damage = ( ( 512 - Target's Def ) * Attack's Power / 32 )
Damage = Variance( Damage )

X8:

0x5DEC52

If ActionData[0x230] AND 40h
	ActionData[0x230] = 1
Else
	ActionData[0x230] = 80h
End If
//presumably this checks if the target heals from restore element and will either recover or kill based on the result

X9:

0x5DEC8A

Actor's Attack = Actor's Strength * 2
Use Damage X1 with adjusted stat

XA:

0x5DECAA

Damage = ( Attack's Power + Number of Targets - 1 ) / Number of Targets

Additional Checks

Sadness( Damage )

0x5DE958

If Target's Status includes Sadness
	Damage = Damage - (Damage * 3 / 10)
End If
Return Damage

SplitDamage( Damage, multiNoSplit )

0x5DE8F4

If multiNoSplit == 0
	If No. of Attack's Targets >= 2
		Set Attack's split damage Target Flag
	Else
		Set multiNoSplit == 1
	End If
End If

If ActionData[0xAC] == 0
	Damage = Damage / 2
Else
	If multiNoSplit == 0
		Damage = Damage * 3 / 2
	End If
End If
Return Damage

Barrier( Damage )

0x5DE82C

If Attack Property "Physical" is 0
	If Target's Statuses include MBarrier
		Set ActionData "MBarrier Active" flag
	End If
Else
	If Target's Statuses include Barrier
		Set ActionData "Barrier Active" flag
	End If
End If

If ActionData "MBarrier Active" or "Barrier Active" flags are set
	Damage = Damage / 2
End If

If attack is Magic and EnabledMagic[7] == 0 (?)
	Damage = Damage + ( Damage * ( EnabledMagic[7] * (10 / 32) ) / 100 )
End If
Return Damage

Variance( Damage ):

0x5DE988

Damage = Damage ([0..255] + 3841) >> 12  //from RNGLUT in KERNEL.BIN
//Again, we have another chance for overflow.

If Damage == 0
	Damage == 1
End If
Return Damage

Secondary Damage Formulae

X0:

0x5DECFB

Damage = Attacker's HP

X1:

5DED1E

Damage = Attacker's MHP - Attacker's HP

X8:

0x5DED73

Dice_Count = Attacker's Level / 10

If Dice_Count < 2 then
	Dice_Count = 2
Elseif Dice_Count > 6
	Dice_Count = 6
End If

total_dice_roll = 0
For ( d_loop = 0; d_loop < Dice_Count; d_loop++ )
	die = [0..5]
	all_dice[d_loop] = die
	total_dice_roll += die + 1

	set die visualization based on roll
Loop

value_repeat = 0
For ( d_value = 0; d_value < 6; d_value++ )

	repeat_count = 0
	For ( d_loop = 0; d_loop < Dice_Count; d_loop++ )

		If all_dice[d_loop] = d_value then
			repeat_count++
		End If
	Loop

	If repeat_count > value_repeat then
		value_repeat = repeat_count
	End If

Loop

Damage = value_repeat * 100 * total_dice_roll

X9

0x5DEEEF

Damage = Number of Successful Escapes

XA

0x5DEF1D

Damage = Target's HP - 1

XB

0x5DEF44

Damage = (Game Time Hours * 100) + (Game Time Minutes)

XC

0x5DEF88

Damage = Target's Kill Count * 10
//This is intended to be used only on players
//This will cause a memory leak if done on enemies

XD

0x5DEFDD

If target is playable character
	MateriaCount = 0;
	For ( MateriaLoop = 0; MateriaLoop < 8; MateriaLoop++ )
		If target has materia in weapon slot [MateriaLoop] then MateriaCount++
		If target has materia in armor slot [MateriaLoop] then MateriaCount++
	Loop
	Damage = MateriaCount * 1111
End If

Accuracy Functions

The point of these is to set the "attack will miss" flag in the current action memory structure.

0: Physical Accuracy Check

0x5DDBB0

;For the purposes of this code, "Dex" means the adjusted Dexterity of the actor/target if any in-battle dex bonuses have been granted.
;Same holds for the Physical Evade. Physical Hit rate has no in-game bonus opportunities.

Check_For_Cover()

HitChance = -1;

If "Always connect" flag set then HitChance = 255;

If target has one of the following statuses (Death, Sleep, Confu, Stop, Petrify, Manipulate, Paralysis) then
	Remove Sleep status
	Remove Confu status
	Remove Manipulate status
	HitChance = 255
End If

If action is flagged as "always hit" then HitChance = 255;

Physical Chance = (Actor's Dex >> 2) + action physical hit rate
If Actor is enemy then
	Actor's evade = Actor's Physical evade
else
	Actor's evade = (Actor's Dex >> 2) + Actor's Physical evade
End If
If Target is enemy then
	Target's evade = Target's Physical evade
Else
	Target's evade = (Target's Dex >> 2) + Target's Physical evade
End If

If HitChance = -1 Then
	HitChance = Physical Chance + Actor's evade - Target's evade
	HitChance = FuryAdjust(HitChance)
End If

If HitChance = 0 then HitChance = 1

Luck Chance = [0..99]
If (Actor's Luck / 4) > Luck Chance Then
	HitChance = 255 ;Lucky Hit
Else
	If Actor is Player Character targetting an enemy Then
		If (Target's Luck / 4) > Luck Chance
			HitChance = 0 ;Lucky Dodge
		End If
	End If
End If

Miss Chance = (([0..65535] * 99) / 65535) + 1 ;essentially [1..100]
if HitChance < Miss Chance then
	Set Miss flag
End If

Check_For_Cover

This is where the game checks if the target is covered under a "cover"ing ally. It only applies to Player Characters It might be more complicated than I'm seeing, but that is definitely ONE of its functions

FuryAdjust(HitChance)

	If HitChance < 255 then 
		If Actor is in Fury Status
			HitChance = HitChance - ((HitChance * 3) / 10)
		End If
	End If
	return HitChance 

1: Magical Accuracy Check

0x5DDE5E

acc = Action's Accuracy
tar_save = level / 2; //rounded down
acc_bonus = actor's level - tar_save
rand_0 = [0..99]
rand_1 = [0..99]
if acc < 255 then
   if target does not have instant-death, null, or heal properties to current attack then
      if attack is not (reflectable and target in reflect status) then
         if attack does not inflict statuses or inflicting status include: Death, Sleep, Confu, Stop, Petrify, or Paralysis then
            acc = Fury_Adj( acc );
            if target's M_Evade > rand_0 OR
                acc + acc_bonus < rand_1 then
               Set action miss flag
            end if
         end if
      end if
   end if
end if

2: Critical Hit Check

0x5DDF8E

If attack does not miss then
   if actor in lucky girl status then
      critical_chance = 255
   else
      critical_chance = ((actor's luck + actor's level) - target's level ) >> 2;
      if actor is playable character then
         critical_chance += weapon's critical bonus //?
      end if
      Critical_random = ( ( [0..65535] * 99 ) / 65535 ) + 1;
      if critical_chance > critical_random then
         attack set to critical
      end if
   end if
end if

3, 4, and 5 don't exist. Since they don't set miss they will always hit.

6: Manipulate Accuracy (intended solely for playable characters)

0x5DE0D0

int ally_loop;
ManipSuccess = 0;
for ( ally_loop = 0; ally_loop < 3; ally_loop++ )
{
   if target is currently under manipulation by an actor then
      break;
   end if
}
if target is not currently being manipulated AND
    target is not a playable character AND
    target is an enemy AND
    actor is not currently manipulating an enemy AND
    target is not under manipulate status AND
    target's timer bar is running AND //like they're not stopped, petrified, etc
    target's attack resistance is "always-hit" then //?
   Manip_Chance = actor's level + 50 - target's level; //no less than 0
   if target count > 1 then
      Manip_Chance = ( Manip_Chance << 2 ) / 5;
   end if
   if actor's [0xAC] == 0 then
      Manip_Chance >> 1;
   end if
   if target's attack resistance is "always-hit" then
      Manip_Chance = 255;
   end if
   if actor's accessory property == 5 //"Increase manip rate" property on Hypnocrown
      if Manip_Chance < 100 then
         Manip_Chance = 100;
      end if
   end if
   If Manip_Chance > [0..99] then
      ManipSuccess = 1;
   end if
end if
If ManipSuccess == 1 then
   Set actor's manipulated enemy to target
   Display String 5Ah {"Manipulated <Enemy>"}
   Clear Actor's 0xE4 value //unknown
else
   Set attack missed
end if

This doesn't actually place the target in the manipulate status. That happens elsewhere.

7: Level-based Accuracy

0x5DE08A

If Action's Accuracy > 0 then
   If the remainder of ( Target's level / Action accuracy ) is non-zero then
      Set attack missed
   end if
end if

So if the accuracy IS 0, then it will always hit. This is to prevent a divide by zero error.