pokeyellow/engine/overworld/step_functions.asm

151 lines
2.6 KiB
NASM

ApplyOutOfBattlePoisonDamage: ; c3de (3:43de)
ld a, [wd730]
add a
jp c, .noBlackOut ; no black out if joypad states are being simulated
ld a, [wPreventBlackout]
bit 7, a
jp nz, .noBlackOut
ld a, [wd72e]
bit 6, a
jp nz, .noBlackOut
ld a, [wPartyCount]
and a
jp z, .noBlackOut
call IncrementDayCareMonExp
call Func_c4c7
ld a, [wStepCounter]
and $3 ; is the counter a multiple of 4?
jp nz, .skipPoisonEffectAndSound ; only apply poison damage every fourth step
ld [wWhichPokemon], a
ld hl, wPartyMon1Status
ld de, wPartySpecies
.applyDamageLoop
ld a, [hl]
and (1 << PSN)
jr z, .nextMon2 ; not poisoned
dec hl
dec hl
ld a, [hld]
ld b, a
ld a, [hli]
or b
jr z, .nextMon ; already fainted
; subtract 1 from HP
ld a, [hl]
dec a
ld [hld], a
inc a
jr nz, .noBorrow
; borrow 1 from upper byte of HP
dec [hl]
inc hl
jr .nextMon
.noBorrow
ld a, [hli]
or [hl]
jr nz, .nextMon ; didn't faint from damage
; the mon fainted from the damage
push hl
inc hl
inc hl
ld [hl], a
ld a, [de]
ld [wd11e], a
push de
ld a, [wWhichPokemon]
ld hl, wPartyMonNicks
call GetPartyMonName
xor a
ld [wJoyIgnore], a
call EnableAutoTextBoxDrawing
ld a, $d0
ld [hSpriteIndexOrTextID], a
call DisplayTextID
callab IsThisPartymonStarterPikachu_Party
jr nc, .curMonNotPlayerPikachu
ld e, $3
callab PlayPikachuSoundClip
calladb_ModifyPikachuHappiness PIKAHAPPY_PSNFNT
.curMonNotPlayerPikachu
pop de
pop hl
.nextMon
inc hl
inc hl
.nextMon2
inc de
ld a, [de]
inc a
jr z, .applyDamageLoopDone
ld bc, wPartyMon2 - wPartyMon1
add hl, bc
push hl
ld hl, wWhichPokemon
inc [hl]
pop hl
jr .applyDamageLoop
.applyDamageLoopDone
ld hl, wPartyMon1Status
ld a, [wPartyCount]
ld d, a
ld e, 0
.countPoisonedLoop
ld a, [hl]
and (1 << PSN)
or e
ld e, a
ld bc, wPartyMon2 - wPartyMon1
add hl, bc
dec d
jr nz, .countPoisonedLoop
ld a, e
and a ; are any party members poisoned?
jr z, .skipPoisonEffectAndSound
ld b, $2
predef InvertBGPal_4Frames ; change BG white to dark grey for 4 frames
ld a, SFX_POISONED
call PlaySound
.skipPoisonEffectAndSound
predef AnyPartyAlive
ld a, d
and a
jr nz, .noBlackOut
call EnableAutoTextBoxDrawing
ld a, $d1
ld [hSpriteIndexOrTextID], a
call DisplayTextID
ld hl, wd72e
set 5, [hl]
ld a, $ff
jr .done
.noBlackOut
xor a
.done
ld [wOutOfBattleBlackout], a
ret
Func_c4c7: ; c4c7 (3:44c7)
ld a, [wStepCounter]
and a
jr nz, .asm_c4de
call Random
and $1
jr z, .asm_c4de
calladb_ModifyPikachuHappiness $6
.asm_c4de
ld hl, wPikachuMood
ld a, [hl]
cp $80
jr z, .asm_c4ef
jr c, .asm_c4ea
dec a
dec a
.asm_c4ea
inc a
ld [hl], a
cp $80
ret nz
.asm_c4ef
xor a
ld [wd49c], a
ret