atk04

.thumb

.global atk04_critcalc

.include "equs.txt"

.equ itemid_get_x12, 0x9A924
.equ rand, 0x44EC8
.equ __umodsi3, 0x1E4684
.equ sub_EB2E0, 0xEB2E0

.org 0x1E408
    push {r4-r7, lr}
    ldr r1, =(battle_data)
    ldr r0, =(b_attacker)
    ldrb r2, [r0]
    mov r0, #0x58
    mul r0, r2
    add r0, r0, r1
    ldrh r0, [r0, #0x2E]            @battle_data.held_item
    cmp r0, #ENIGMA_BERRY
    bne loc_1E438
    ldr r1, =(sav1_copied_berries_pbs)
    lsl r0, r2, #0x3
    sub r0, r0, r2
    lsl r0, r0, #0x2
    add r0, r0, r1
    ldrb r6, [r0, #0x7]
    b loc_1E440

.align 2, 0
.pool

loc_1E438:
    bl itemid_get_x12
    lsl r0, r0, #0x18
    lsr r6, r0, #0x18

loc_1E440:
    ldr r1, =(gPotentialItemEffectBattler)
    ldr r3, =(b_attacker)
    ldrb r0, [r3]
    strb r0, [r1]

    ldr r4, =(battle_data)
    ldrb r1, [r3]
    mov r0, #0x58
    mov r7, r1
    mul r7, r0
    mov r0, r4
    add r0, #0x50
    add r0, r7, r0
    ldr r0, [r0]
    mov r1, #0x80
    lsl r1, r1, #0xD                @0x100000, focus_energy
    and r0, r1
    neg r0, r0
    asr r5, r0, #0x1F
    mov r0, #0x2
    and r5, r0
    ldr r2, =(move_data)
    ldr r0, =(b_move_to_execute_A)
    ldrh r1, [r0]
    lsl r0, r1, #0x1
    add r0, r0, r1
    lsl r0, r0, #0x2
    add r0, r0, r2
    ldrb r1, [r0]
    mov r12, r3
    cmp r1, #MOVE_EFFECT_HIGH_CRIT_CHANCE
    bne loc_1E480
    add r5, #0x1

loc_1E480:
    mov r0, r5
    cmp r1, #MOVE_EFFECT_SKY_ATTACK
    bne loc_1E488
    add r0, #0x1

loc_1E488:
    cmp r1, #MOVE_EFFECT_BLAZE_KICK
    bne loc_1E48E
    add r0, #0x1

loc_1E48E:
    mov r2, r0
    cmp r1, #MOVE_EFFECT_POISON_TAIL
    bne loc_1E496
    add r2, #0x1

loc_1E496:
    mov r1, #0x0
    cmp r6, #HOLD_EFFECT_LUCKY_PUNCH
    bne loc_1E4A6
    add r0, r7, r4
    ldrh r0, [r0]
    cmp r0, #113                    @CHANSEY
    bne loc_1E4A6
    mov r1, #0x1

loc_1E4A6:
    lsl r5, r1, #0x1
    mov r3, #0x0
    cmp r6, #HOLD_EFFECT_STICK
    bne loc_1E4C0
    mov r0, r12
    ldrb r1, [r0]
    mov r0, #0x58
    mul r0, r1
    add r0, r0, r4
    ldrh r0, [r0]
    cmp r0, #83                     @FARFETCHD
    bne loc_1E4C0
    mov r3, #0x1

loc_1E4C0:
    lsl r1, r3, #0x1
    cmp r6, #HOLD_EFFECT_SCOPE_LENS
    bne loc_1E4E0
    add r0, r5, #0x1
    add r0, r2, r0
    b loc_1E4E2

.align 2, 0
.pool

loc_1E4E0:
    add r0, r2, r5

loc_1E4E2:
    add r0, r0, r1
    lsl r0, r0, #0x10
    lsr r0, r0, #0x10
    mov r5, r0
    cmp r5, #4
    bls loc_1E4F0
    mov r5, #4

loc_1E4F0:
    ldr r0, =(b_defender)
    ldrb r1, [r0]
    mov r0, #0x58
    mul r0, r1
    add r0, r0, r4
    add r0, #0x20                   @battle_data.ability
    ldrb r4, [r0]
    cmp r4, #BATTLE_ARMOR
    beq atk04_NoCrit
    cmp r4, #SHELL_ARMOR
    beq atk04_NoCrit
    ldr r1, =(status3)
    mov r2, r12
    ldrb r0, [r2]
    lsl r0, r0, #0x2
    add r0, r0, r1
    ldr r0, [r0]
    mov r1, #0x80
    lsl r1, r1, #0x8                @0x8000, STATUS3_CANT_SCORE_A_CRIT
    and r0, r1
    cmp r0, #0x0
    bne atk04_NoCrit
    ldr r4, =(battle_type_flags)
    ldr r0, [r4]
    mov r1, #0x80
    lsl r1, r1, #0x2                @0x200, BATTLETYPE_FIRST_BATTLE
    and r0, r1
    cmp r0, #0x0
    bne atk04_NoCrit
    bl rand
    ldr r2, =(sCriticalHitChance + rom)
    lsl r1, r5, #0x1
    add r1, r1, r2
    lsl r0, r0, #0x10
    lsr r0, r0, #0x10
    ldrh r1, [r1]
    bl __umodsi3
    lsl r0, r0, #0x10
    cmp r0, #0x0
    bne atk04_NoCrit
    ldr r0, [r4]
    mov r1, #0x10
    and r0, r1
    cmp r0, #0x0
    beq loc_1E55A
    mov r0, #0x1
    bl sub_EB2E0
    lsl r0, r0, #0x18
    cmp r0, #0x0
    beq atk04_NoCrit

loc_1E55A:
    ldr r0, [r4]
    mov r1, #0x80
    lsl r1, r1, #0x9                @0x10000
    and r0, r1
    cmp r0, #0x0
    bne atk04_NoCrit
    ldr r1, =(b_critical_multiplier)
    mov r0, #0x2
    b loc_1E584

.align 2, 0
.pool

atk04_NoCrit:
    ldr r1, =(b_critical_multiplier)
    mov r0, #0x1

loc_1E584:
    strb r0, [r1]
    ldr r1, =(b_movescr_cursor)
    ldr r0, [r1]
    add r0, #0x1
    str r0, [r1]
    pop {r4-r7}
    pop {r0}
    bx r0

.align 2, 0
.pool

.org 0x250530
sCriticalHitChance:
    .hword 16           @stage 1, 6%
    .hword 8            @stage 2, 12%
    .hword 4            @stage 3, 25%
    .hword 3            @stage 4, 33%
    .hword 2            @stage 5, 50%