Physical Evade Calculation

No Parameters 

Returns r2 = 0x00 if Attack Hits

Set the 4 Ability Evade bytes
 - 0x801938de - Accessory Evade
 - 0x801938df - RH Evade (weapon or shield)
 - 0x801938e0 - LH Evade (weapon or shield)
 - 0x801938e1 - Class Evade
Set Ability Base Hit to 100 (0x801938dc)

Modify Evade bytes and base Hit according to Statuses/Ability/Facing/Weather etc..

Roll Each Ability Evade byte against Ability Base Hit
(So something halvering Ability Base hit, will in fact doubles all Evade bytes)
----------------------------------------------------------------------------------------------
00188510: 27bdffe8 addiu r29,r29,-0x0018    
00188514: afbf0010 sw r31,0x0010(r29)       
00188518: 0c0613e7 jal 0x00184f9c           |-->Equipment Evasion Setting (Physical)  Set the 4 Ability Evade byte , set Ability base hit to 100 
0018851c: 00000000 nop                      |
00188520: 0c0614b9 jal 0x001852e4           |-->Concentrate Calculation  Nullify the 4 Ability Evade byte if Attacker uses Concentration
00188524: 00000000 nop                      |
00188528: 0c0614ca jal 0x00185328           |-->Dark/Confuse Caclulation    Ability Base Hit/2 if attacker blinded  or confused / Nullify the 4 Ability Evade byte if attacker is transparent
0018852c: 00000000 nop                      |
00188530: 0c0614df jal 0x0018537c           |-->Abandon Calculation   If target as abandon (and it is usable) --> Ability Base Hit/2
00188534: 00000000 nop                      |
00188538: 0c0614fd jal 0x001853f4           |-->Evasion Changes due to Statuses  Nullify the 4 Ability evade byte based on Target status - Ability Base Hit/2 if target defending
0018853c: 00000000 nop                      |
00188540: 0c0615ce jal 0x00185738           |-->Weather effects on Bows With Bows/Crossbows : Night = Ability base Hit * 0,75 and/or If Stormy weather Ability base hit *0,75
00188544: 00000000 nop                      |
00188548: 0c06153f jal 0x001854fc           |-->Facing Evade Calculation  Side Attack cancels Class evasion, Back Attack additionnaly cancels Right/Left hand evasion
0018854c: 00000000 nop                      |
00188550: 0c062122 jal 0x00188488           |-->Calculate Hit %  Roll the 4 Ability Evade byte (one after another) against Ability base Hit
00188554: 00000000 nop                      
00188558: 8fbf0010 lw r31,0x0010(r29)       
0018855c: 27bd0018 addiu r29,r29,0x0018     
00188560: 03e00008 jr r31                   
00188564: 00000000 nop                      

Return Locations

00188b64: Formula 01 (link)
00188ba4: Formula 02 (link)
00188cf4: Formula 06 (link)
001896ec: Formula 25 (link)
00189794: Formula 26 (link)
00189828: Formula 27 (link)
00189870: Formula 28 (link)
00189a90: Formula 2B (link return at 00189a9c)
00189ad8: Formula 2C (link)
00189b20: Formula 2D (link)
00189b94: Formula 2E (link)
00189c50: Formula 2F (link)
00189c90: Formula 30 (link)
00189cd0: Formula 31 (link)
00189f84: Formula 37 (link)
0018a3d0: Formula 4D (link)
0018a458: Formula 4F (link)
0018a4a0: Formula 50 (link)
0018ab98: Formula 63 (link)