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item_effects.asm
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UseItem_::
ld a, 1
ld [wActionResultOrTookBattleTurn], a ; initialise to success value
ld a, [wcf91] ;contains item_ID
cp HM01
jp nc, ItemUseTMHM
ld hl, ItemUsePtrTable
dec a
add a
ld c, a
ld b, 0
add hl, bc
ld a, [hli]
ld h, [hl]
ld l, a
jp hl
ItemUsePtrTable:
; entries correspond to item ids
dw ItemUseBall ; MASTER_BALL
dw ItemUseBall ; ULTRA_BALL
dw ItemUseBall ; GREAT_BALL
dw ItemUseBall ; POKE_BALL
dw ItemUseTownMap ; TOWN_MAP
dw ItemUseBicycle ; BICYCLE
dw ItemUseSurfboard ; out-of-battle Surf effect
dw ItemUseBall ; SAFARI_BALL
dw ItemUsePokedex ; POKEDEX
dw ItemUseEvoStone ; MOON_STONE
dw ItemUseMedicine ; ANTIDOTE
dw ItemUseMedicine ; BURN_HEAL
dw ItemUseMedicine ; ICE_HEAL
dw ItemUseMedicine ; AWAKENING
dw ItemUseMedicine ; PARLYZ_HEAL
dw ItemUseMedicine ; FULL_RESTORE
dw ItemUseMedicine ; MAX_POTION
dw ItemUseMedicine ; HYPER_POTION
dw ItemUseMedicine ; SUPER_POTION
dw ItemUseMedicine ; POTION
dw ItemUseBait ; BOULDERBADGE
dw ItemUseRock ; CASCADEBADGE
dw UnusableItem ; THUNDERBADGE
dw UnusableItem ; RAINBOWBADGE
dw UnusableItem ; SOULBADGE
dw UnusableItem ; MARSHBADGE
dw UnusableItem ; VOLCANOBADGE
dw UnusableItem ; EARTHBADGE
dw ItemUseEscapeRope ; ESCAPE_ROPE
dw ItemUseRepel ; REPEL
dw UnusableItem ; OLD_AMBER
dw ItemUseEvoStone ; FIRE_STONE
dw ItemUseEvoStone ; THUNDER_STONE
dw ItemUseEvoStone ; WATER_STONE
dw ItemUseVitamin ; HP_UP
dw ItemUseVitamin ; PROTEIN
dw ItemUseVitamin ; IRON
dw ItemUseVitamin ; CARBOS
dw ItemUseVitamin ; CALCIUM
dw ItemUseVitamin ; RARE_CANDY
dw UnusableItem ; DOME_FOSSIL
dw UnusableItem ; HELIX_FOSSIL
dw UnusableItem ; SECRET_KEY
dw UnusableItem
dw UnusableItem ; BIKE_VOUCHER
dw ItemUseXAccuracy ; X_ACCURACY
dw ItemUseEvoStone ; LEAF_STONE
dw ItemUseCardKey ; CARD_KEY
dw UnusableItem ; NUGGET
dw UnusableItem ; ??? PP_UP
dw ItemUsePokedoll ; POKE_DOLL
dw ItemUseMedicine ; FULL_HEAL
dw ItemUseMedicine ; REVIVE
dw ItemUseMedicine ; MAX_REVIVE
dw ItemUseGuardSpec ; GUARD_SPEC
dw ItemUseSuperRepel ; SUPER_REPL
dw ItemUseMaxRepel ; MAX_REPEL
dw ItemUseDireHit ; DIRE_HIT
dw UnusableItem ; COIN
dw ItemUseMedicine ; FRESH_WATER
dw ItemUseMedicine ; SODA_POP
dw ItemUseMedicine ; LEMONADE
dw UnusableItem ; S_S_TICKET
dw UnusableItem ; GOLD_TEETH
dw ItemUseXStat ; X_ATTACK
dw ItemUseXStat ; X_DEFEND
dw ItemUseXStat ; X_SPEED
dw ItemUseXStat ; X_SPECIAL
dw ItemUseCoinCase ; COIN_CASE
dw ItemUseOaksParcel ; OAKS_PARCEL
dw ItemUseItemfinder ; ITEMFINDER
dw UnusableItem ; SILPH_SCOPE
dw ItemUsePokeflute ; POKE_FLUTE
dw UnusableItem ; LIFT_KEY
dw UnusableItem ; EXP_ALL
dw ItemUseOldRod ; OLD_ROD
dw ItemUseGoodRod ; GOOD_ROD
dw ItemUseSuperRod ; SUPER_ROD
dw ItemUsePPUp ; PP_UP (real one)
dw ItemUsePPRestore ; ETHER
dw ItemUsePPRestore ; MAX_ETHER
dw ItemUsePPRestore ; ELIXER
dw ItemUsePPRestore ; MAX_ELIXER
ItemUseBall:
; Balls can't be used out of battle.
ld a, [wIsInBattle]
and a
jp z, ItemUseNotTime
; Balls can't catch trainers' Pokémon.
dec a
jp nz, ThrowBallAtTrainerMon
; If this is for the old man battle, skip checking if the party & box are full.
ld a, [wBattleType]
dec a
jr z, .canUseBall
ld a, [wPartyCount] ; is party full?
cp PARTY_LENGTH
jr nz, .canUseBall
ld a, [wNumInBox] ; is box full?
cp MONS_PER_BOX
jp z, BoxFullCannotThrowBall
.canUseBall
xor a
ld [wCapturedMonSpecies], a
ld a, [wBattleType]
cp BATTLE_TYPE_SAFARI
jr nz, .skipSafariZoneCode
.safariZone
ld hl, wNumSafariBalls
dec [hl] ; remove a Safari Ball
.skipSafariZoneCode
call RunDefaultPaletteCommand
ld a, $43 ; successful capture value
ld [wPokeBallAnimData], a
call LoadScreenTilesFromBuffer1
ld hl, ItemUseText00
call PrintText
; If the player is fighting an unidentified ghost, set the value that indicates
; the Pokémon can't be caught and skip the capture calculations.
callfar IsGhostBattle
ld b, $10 ; can't be caught value
jp z, .setAnimData
ld a, [wBattleType]
dec a
jr nz, .notOldManBattle
.oldManBattle
ld hl, wGrassRate
ld de, wPlayerName
ld bc, NAME_LENGTH
call CopyData ; save the player's name in the Wild Monster data (part of the Cinnabar Island Missingno. glitch)
jp .captured
.notOldManBattle
; If the player is fighting the ghost Marowak, set the value that indicates the
; Pokémon can't be caught and skip the capture calculations.
ld a, [wCurMap]
cp POKEMON_TOWER_6F
jr nz, .loop
ld a, [wEnemyMonSpecies2]
cp MAROWAK
ld b, $10 ; can't be caught value
jp z, .setAnimData
; Get the first random number. Let it be called Rand1.
; Rand1 must be within a certain range according the kind of ball being thrown.
; The ranges are as follows.
; Poké Ball: [0, 255]
; Great Ball: [0, 200]
; Ultra/Safari Ball: [0, 150]
; Loop until an acceptable number is found.
.loop
call Random
ld b, a
; Get the item ID.
ld hl, wcf91
ld a, [hl]
; The Master Ball always succeeds.
cp MASTER_BALL
jp z, .captured
; Anything will do for the basic Poké Ball.
cp POKE_BALL
jr z, .checkForAilments
; If it's a Great/Ultra/Safari Ball and Rand1 is greater than 200, try again.
ld a, 200
cp b
jr c, .loop
; Less than or equal to 200 is good enough for a Great Ball.
ld a, [hl]
cp GREAT_BALL
jr z, .checkForAilments
; If it's an Ultra/Safari Ball and Rand1 is greater than 150, try again.
ld a, 150
cp b
jr c, .loop
.checkForAilments
; Pokémon can be caught more easily with a status ailment.
; Depending on the status ailment, a certain value will be subtracted from
; Rand1. Let this value be called Status.
; The larger Status is, the more easily the Pokémon can be caught.
; no status ailment: Status = 0
; Burn/Paralysis/Poison: Status = 12
; Freeze/Sleep: Status = 25
; If Status is greater than Rand1, the Pokémon will be caught for sure.
ld a, [wEnemyMonStatus]
and a
jr z, .skipAilmentValueSubtraction ; no ailments
and 1 << FRZ | SLP
ld c, 12
jr z, .notFrozenOrAsleep
ld c, 25
.notFrozenOrAsleep
ld a, b
sub c
jp c, .captured
ld b, a
.skipAilmentValueSubtraction
push bc ; save (Rand1 - Status)
; Calculate MaxHP * 255.
xor a
ldh [hMultiplicand], a
ld hl, wEnemyMonMaxHP
ld a, [hli]
ldh [hMultiplicand + 1], a
ld a, [hl]
ldh [hMultiplicand + 2], a
ld a, 255
ldh [hMultiplier], a
call Multiply
; Determine BallFactor. It's 8 for Great Balls and 12 for the others.
ld a, [wcf91]
cp GREAT_BALL
ld a, 12
jr nz, .skip1
ld a, 8
.skip1
; Note that the results of all division operations are floored.
; Calculate (MaxHP * 255) / BallFactor.
ldh [hDivisor], a
ld b, 4 ; number of bytes in dividend
call Divide
; Divide the enemy's current HP by 4. HP is not supposed to exceed 999 so
; the result should fit in a. If the division results in a quotient of 0,
; change it to 1.
ld hl, wEnemyMonHP
ld a, [hli]
ld b, a
ld a, [hl]
srl b
rr a
srl b
rr a
and a
jr nz, .skip2
inc a
.skip2
; Let W = ((MaxHP * 255) / BallFactor) / max(HP / 4, 1). Calculate W.
ldh [hDivisor], a
ld b, 4
call Divide
; If W > 255, store 255 in [hQuotient + 3].
; Let X = min(W, 255) = [hQuotient + 3].
ldh a, [hQuotient + 2]
and a
jr z, .skip3
ld a, 255
ldh [hQuotient + 3], a
.skip3
pop bc ; b = Rand1 - Status
; If Rand1 - Status > CatchRate, the ball fails to capture the Pokémon.
ld a, [wEnemyMonActualCatchRate]
cp b
jr c, .failedToCapture
; If W > 255, the ball captures the Pokémon.
ldh a, [hQuotient + 2]
and a
jr nz, .captured
call Random ; Let this random number be called Rand2.
; If Rand2 > X, the ball fails to capture the Pokémon.
ld b, a
ldh a, [hQuotient + 3]
cp b
jr c, .failedToCapture
.captured
jr .skipShakeCalculations
.failedToCapture
ldh a, [hQuotient + 3]
ld [wPokeBallCaptureCalcTemp], a ; Save X.
; Calculate CatchRate * 100.
xor a
ldh [hMultiplicand], a
ldh [hMultiplicand + 1], a
ld a, [wEnemyMonActualCatchRate]
ldh [hMultiplicand + 2], a
ld a, 100
ldh [hMultiplier], a
call Multiply
; Determine BallFactor2.
; Poké Ball: BallFactor2 = 255
; Great Ball: BallFactor2 = 200
; Ultra/Safari Ball: BallFactor2 = 150
ld a, [wcf91]
ld b, 255
cp POKE_BALL
jr z, .skip4
ld b, 200
cp GREAT_BALL
jr z, .skip4
ld b, 150
cp ULTRA_BALL
jr z, .skip4
.skip4
; Let Y = (CatchRate * 100) / BallFactor2. Calculate Y.
ld a, b
ldh [hDivisor], a
ld b, 4
call Divide
; If Y > 255, there are 3 shakes.
; Note that this shouldn't be possible.
; The maximum value of Y is (255 * 100) / 150 = 170.
ldh a, [hQuotient + 2]
and a
ld b, $63 ; 3 shakes
jr nz, .setAnimData
; Calculate X * Y.
ld a, [wPokeBallCaptureCalcTemp]
ldh [hMultiplier], a
call Multiply
; Calculate (X * Y) / 255.
ld a, 255
ldh [hDivisor], a
ld b, 4
call Divide
; Determine Status2.
; no status ailment: Status2 = 0
; Burn/Paralysis/Poison: Status2 = 5
; Freeze/Sleep: Status2 = 10
ld a, [wEnemyMonStatus]
and a
jr z, .skip5
and 1 << FRZ | SLP
ld b, 5
jr z, .addAilmentValue
ld b, 10
.addAilmentValue
; If the Pokémon has a status ailment, add Status2.
ldh a, [hQuotient + 3]
add b
ldh [hQuotient + 3], a
.skip5
; Finally determine the number of shakes.
; Let Z = ((X * Y) / 255) + Status2 = [hQuotient + 3].
; The number of shakes depend on the range Z is in.
; 0 ≤ Z < 10: 0 shakes (the ball misses)
; 10 ≤ Z < 30: 1 shake
; 30 ≤ Z < 70: 2 shakes
; 70 ≤ Z: 3 shakes
ldh a, [hQuotient + 3]
cp 10
ld b, $20
jr c, .setAnimData
cp 30
ld b, $61
jr c, .setAnimData
cp 70
ld b, $62
jr c, .setAnimData
ld b, $63
.setAnimData
ld a, b
ld [wPokeBallAnimData], a
.skipShakeCalculations
ld c, 20
call DelayFrames
; Do the animation.
ld a, TOSS_ANIM
ld [wAnimationID], a
xor a
ldh [hWhoseTurn], a
ld [wAnimationType], a
ld [wDamageMultipliers], a
ld a, [wWhichPokemon]
push af
ld a, [wcf91]
push af
predef MoveAnimation
pop af
ld [wcf91], a
pop af
ld [wWhichPokemon], a
; Determine the message to display from the animation.
ld a, [wPokeBallAnimData]
cp $10
ld hl, ItemUseBallText00
jp z, .printMessage
cp $20
ld hl, ItemUseBallText01
jp z, .printMessage
cp $61
ld hl, ItemUseBallText02
jp z, .printMessage
cp $62
ld hl, ItemUseBallText03
jp z, .printMessage
cp $63
ld hl, ItemUseBallText04
jp z, .printMessage
; Save current HP.
ld hl, wEnemyMonHP
ld a, [hli]
push af
ld a, [hli]
push af
; Save status ailment.
inc hl
ld a, [hl]
push af
push hl
; If the Pokémon is transformed, the Pokémon is assumed to be a Ditto.
; This is a bug because a wild Pokémon could have used Transform via
; Mirror Move even though the only wild Pokémon that knows Transform is Ditto.
ld hl, wEnemyBattleStatus3
bit TRANSFORMED, [hl]
jr z, .notTransformed
ld a, DITTO
ld [wEnemyMonSpecies2], a
jr .skip6
.notTransformed
; If the Pokémon is not transformed, set the transformed bit and copy the
; DVs to wTransformedEnemyMonOriginalDVs so that LoadEnemyMonData won't generate
; new DVs.
set TRANSFORMED, [hl]
ld hl, wTransformedEnemyMonOriginalDVs
ld a, [wEnemyMonDVs]
ld [hli], a
ld a, [wEnemyMonDVs + 1]
ld [hl], a
.skip6
ld a, [wcf91]
push af
ld a, [wEnemyMonSpecies2]
ld [wcf91], a
ld a, [wEnemyMonLevel]
ld [wCurEnemyLVL], a
callfar LoadEnemyMonData
pop af
ld [wcf91], a
pop hl
pop af
ld [hld], a
dec hl
pop af
ld [hld], a
pop af
ld [hl], a
ld a, [wEnemyMonSpecies]
ld [wCapturedMonSpecies], a
ld [wcf91], a
ld [wd11e], a
ld a, [wBattleType]
dec a ; is this the old man battle?
jr z, .oldManCaughtMon ; if so, don't give the player the caught Pokémon
ld hl, ItemUseBallText05
call PrintText
; Add the caught Pokémon to the Pokédex.
predef IndexToPokedex
ld a, [wd11e]
dec a
ld c, a
ld b, FLAG_TEST
ld hl, wPokedexOwned
predef FlagActionPredef
ld a, c
push af
ld a, [wd11e]
dec a
ld c, a
ld b, FLAG_SET
predef FlagActionPredef
pop af
and a ; was the Pokémon already in the Pokédex?
jr nz, .skipShowingPokedexData ; if so, don't show the Pokédex data
ld hl, ItemUseBallText06
call PrintText
call ClearSprites
ld a, [wEnemyMonSpecies]
ld [wd11e], a
predef ShowPokedexData
.skipShowingPokedexData
ld a, [wPartyCount]
cp PARTY_LENGTH ; is party full?
jr z, .sendToBox
xor a ; PLAYER_PARTY_DATA
ld [wMonDataLocation], a
call ClearSprites
call AddPartyMon
jr .done
.sendToBox
call ClearSprites
call SendNewMonToBox
ld hl, ItemUseBallText07
CheckEvent EVENT_MET_BILL
jr nz, .printTransferredToPCText
ld hl, ItemUseBallText08
.printTransferredToPCText
call PrintText
jr .done
.oldManCaughtMon
ld hl, ItemUseBallText05
.printMessage
call PrintText
call ClearSprites
.done
ld a, [wBattleType]
and a ; is this the old man battle?
ret nz ; if so, don't remove a ball from the bag
; Remove a ball from the bag.
ld hl, wNumBagItems
inc a
ld [wItemQuantity], a
jp RemoveItemFromInventory
ItemUseBallText00:
;"It dodged the thrown ball!"
;"This pokemon can't be caught"
text_far _ItemUseBallText00
text_end
ItemUseBallText01:
;"You missed the pokemon!"
text_far _ItemUseBallText01
text_end
ItemUseBallText02:
;"Darn! The pokemon broke free!"
text_far _ItemUseBallText02
text_end
ItemUseBallText03:
;"Aww! It appeared to be caught!"
text_far _ItemUseBallText03
text_end
ItemUseBallText04:
;"Shoot! It was so close too!"
text_far _ItemUseBallText04
text_end
ItemUseBallText05:
;"All right! {MonName} was caught!"
;play sound
text_far _ItemUseBallText05
sound_caught_mon
text_promptbutton
text_end
ItemUseBallText07:
;"X was transferred to Bill's PC"
text_far _ItemUseBallText07
text_end
ItemUseBallText08:
;"X was transferred to someone's PC"
text_far _ItemUseBallText08
text_end
ItemUseBallText06:
;"New DEX data will be added..."
;play sound
text_far _ItemUseBallText06
sound_dex_page_added
text_promptbutton
text_end
ItemUseTownMap:
ld a, [wIsInBattle]
and a
jp nz, ItemUseNotTime
farjp DisplayTownMap
ItemUseBicycle:
ld a, [wIsInBattle]
and a
jp nz, ItemUseNotTime
ld a, [wWalkBikeSurfState]
ld [wWalkBikeSurfStateCopy], a
cp 2 ; is the player surfing?
jp z, ItemUseNotTime
dec a ; is player already bicycling?
jr nz, .tryToGetOnBike
.getOffBike
call ItemUseReloadOverworldData
xor a
ld [wWalkBikeSurfState], a ; change player state to walking
call PlayDefaultMusic ; play walking music
ld hl, GotOffBicycleText
jr .printText
.tryToGetOnBike
call IsBikeRidingAllowed
jp nc, NoCyclingAllowedHere
call ItemUseReloadOverworldData
xor a ; no keys pressed
ldh [hJoyHeld], a ; current joypad state
inc a
ld [wWalkBikeSurfState], a ; change player state to bicycling
ld hl, GotOnBicycleText
call PlayDefaultMusic ; play bike riding music
.printText
jp PrintText
; used for Surf out-of-battle effect
ItemUseSurfboard:
ld a, [wWalkBikeSurfState]
ld [wWalkBikeSurfStateCopy], a
cp 2 ; is the player already surfing?
jr z, .tryToStopSurfing
.tryToSurf
call IsNextTileShoreOrWater
jp c, SurfingAttemptFailed
ld hl, TilePairCollisionsWater
call CheckForTilePairCollisions
jp c, SurfingAttemptFailed
.surf
call .makePlayerMoveForward
ld hl, wd730
set 7, [hl]
ld a, 2
ld [wWalkBikeSurfState], a ; change player state to surfing
call PlayDefaultMusic ; play surfing music
ld hl, SurfingGotOnText
jp PrintText
.tryToStopSurfing
xor a
ldh [hSpriteIndexOrTextID], a
ld d, 16 ; talking range in pixels (normal range)
call IsSpriteInFrontOfPlayer2
res 7, [hl]
ldh a, [hSpriteIndexOrTextID]
and a ; is there a sprite in the way?
jr nz, .cannotStopSurfing
ld hl, TilePairCollisionsWater
call CheckForTilePairCollisions
jr c, .cannotStopSurfing
ld hl, wTilesetCollisionPtr ; pointer to list of passable tiles
ld a, [hli]
ld h, [hl]
ld l, a ; hl now points to passable tiles
ld a, [wTileInFrontOfPlayer] ; tile in front of the player
ld b, a
.passableTileLoop
ld a, [hli]
cp b
jr z, .stopSurfing
cp $ff
jr nz, .passableTileLoop
.cannotStopSurfing
ld hl, SurfingNoPlaceToGetOffText
jp PrintText
.stopSurfing
call .makePlayerMoveForward
ld hl, wd730
set 7, [hl]
xor a
ld [wWalkBikeSurfState], a ; change player state to walking
dec a
ld [wJoyIgnore], a
call PlayDefaultMusic ; play walking music
jp LoadWalkingPlayerSpriteGraphics
; uses a simulated button press to make the player move forward
.makePlayerMoveForward
ld a, [wPlayerDirection] ; direction the player is going
bit PLAYER_DIR_BIT_UP, a
ld b, D_UP
jr nz, .storeSimulatedButtonPress
bit PLAYER_DIR_BIT_DOWN, a
ld b, D_DOWN
jr nz, .storeSimulatedButtonPress
bit PLAYER_DIR_BIT_LEFT, a
ld b, D_LEFT
jr nz, .storeSimulatedButtonPress
ld b, D_RIGHT
.storeSimulatedButtonPress
ld a, b
ld [wSimulatedJoypadStatesEnd], a
xor a
ld [wWastedByteCD39], a
inc a
ld [wSimulatedJoypadStatesIndex], a
ret
SurfingGotOnText:
text_far _SurfingGotOnText
text_end
SurfingNoPlaceToGetOffText:
text_far _SurfingNoPlaceToGetOffText
text_end
ItemUsePokedex:
predef_jump ShowPokedexMenu
ItemUseEvoStone:
ld a, [wIsInBattle]
and a
jp nz, ItemUseNotTime
ld a, [wWhichPokemon]
push af
ld a, [wcf91]
ld [wEvoStoneItemID], a
push af
ld a, EVO_STONE_PARTY_MENU
ld [wPartyMenuTypeOrMessageID], a
ld a, $ff
ld [wUpdateSpritesEnabled], a
call DisplayPartyMenu
pop bc
jr c, .canceledItemUse
ld a, b
ld [wcf91], a
ld a, $01
ld [wForceEvolution], a
ld a, SFX_HEAL_AILMENT
call PlaySoundWaitForCurrent
call WaitForSoundToFinish
callfar TryEvolvingMon ; try to evolve pokemon
ld a, [wEvolutionOccurred]
and a
jr z, .noEffect
pop af
ld [wWhichPokemon], a
ld hl, wNumBagItems
ld a, 1 ; remove 1 stone
ld [wItemQuantity], a
jp RemoveItemFromInventory
.noEffect
call ItemUseNoEffect
.canceledItemUse
xor a
ld [wActionResultOrTookBattleTurn], a ; item not used
pop af
ret
ItemUseVitamin:
ld a, [wIsInBattle]
and a
jp nz, ItemUseNotTime
ItemUseMedicine:
ld a, [wPartyCount]
and a
jp z, .emptyParty
ld a, [wWhichPokemon]
push af
ld a, [wcf91]
push af
ld a, USE_ITEM_PARTY_MENU
ld [wPartyMenuTypeOrMessageID], a
ld a, $ff
ld [wUpdateSpritesEnabled], a
ld a, [wPseudoItemID]
and a ; using Softboiled?
jr z, .notUsingSoftboiled
; if using softboiled
call GoBackToPartyMenu
jr .getPartyMonDataAddress
.emptyParty
ld hl, .emptyPartyText
xor a
ld [wActionResultOrTookBattleTurn], a ; item use failed
jp PrintText
.emptyPartyText
text "You don't have"
line "any #MON!"
prompt
.notUsingSoftboiled
call DisplayPartyMenu
.getPartyMonDataAddress
jp c, .canceledItemUse
ld hl, wPartyMons
ld bc, wPartyMon2 - wPartyMon1
ld a, [wWhichPokemon]
call AddNTimes
ld a, [wWhichPokemon]
ld [wUsedItemOnWhichPokemon], a
ld d, a
ld a, [wcf91]
ld e, a
ld [wd0b5], a
pop af
ld [wcf91], a
pop af
ld [wWhichPokemon], a
ld a, [wPseudoItemID]
and a ; using Softboiled?
jr z, .checkItemType
; if using softboiled
ld a, [wWhichPokemon]
cp d ; is the pokemon trying to use softboiled on itself?
jr z, ItemUseMedicine ; if so, force another choice
.checkItemType
ld a, [wcf91]
cp REVIVE
jr nc, .healHP ; if it's a Revive or Max Revive
cp FULL_HEAL
jr z, .cureStatusAilment ; if it's a Full Heal
cp HP_UP
jp nc, .useVitamin ; if it's a vitamin or Rare Candy
cp FULL_RESTORE
jr nc, .healHP ; if it's a Full Restore or one of the potions
; fall through if it's one of the status-specific healing items
.cureStatusAilment
ld bc, wPartyMon1Status - wPartyMon1
add hl, bc ; hl now points to status
ld a, [wcf91]
lb bc, ANTIDOTE_MSG, 1 << PSN
cp ANTIDOTE
jr z, .checkMonStatus
lb bc, BURN_HEAL_MSG, 1 << BRN
cp BURN_HEAL
jr z, .checkMonStatus
lb bc, ICE_HEAL_MSG, 1 << FRZ
cp ICE_HEAL
jr z, .checkMonStatus
lb bc, AWAKENING_MSG, SLP
cp AWAKENING
jr z, .checkMonStatus
lb bc, PARALYZ_HEAL_MSG, 1 << PAR
cp PARLYZ_HEAL
jr z, .checkMonStatus
lb bc, FULL_HEAL_MSG, $ff ; Full Heal
.checkMonStatus
ld a, [hl] ; pokemon's status
and c ; does the pokemon have a status ailment the item can cure?
jp z, .healingItemNoEffect
; if the pokemon has a status the item can heal
xor a
ld [hl], a ; remove the status ailment in the party data
ld a, b
ld [wPartyMenuTypeOrMessageID], a ; the message to display for the item used
ld a, [wPlayerMonNumber]
cp d ; is pokemon the item was used on active in battle?
jp nz, .doneHealing
; if it is active in battle
xor a
ld [wBattleMonStatus], a ; remove the status ailment in the in-battle pokemon data
push hl
ld hl, wPlayerBattleStatus3
res BADLY_POISONED, [hl] ; heal Toxic status
pop hl
ld bc, wPartyMon1Stats - wPartyMon1Status
add hl, bc ; hl now points to party stats
ld de, wBattleMonStats
ld bc, NUM_STATS * 2
call CopyData ; copy party stats to in-battle stat data
predef DoubleOrHalveSelectedStats
jp .doneHealing
.healHP
inc hl ; hl = address of current HP
ld a, [hli]
ld b, a
ld [wHPBarOldHP+1], a
ld a, [hl]
ld c, a
ld [wHPBarOldHP], a ; current HP stored at wHPBarOldHP (2 bytes, big-endian)
or b
jr nz, .notFainted
.fainted
ld a, [wcf91]
cp REVIVE
jr z, .updateInBattleFaintedData
cp MAX_REVIVE
jr z, .updateInBattleFaintedData
jp .healingItemNoEffect
.updateInBattleFaintedData
ld a, [wIsInBattle]
and a
jr z, .compareCurrentHPToMaxHP
push hl
push de
push bc
ld a, [wUsedItemOnWhichPokemon]
ld c, a
ld hl, wPartyFoughtCurrentEnemyFlags
ld b, FLAG_TEST
predef FlagActionPredef
ld a, c
and a
jr z, .next
ld a, [wUsedItemOnWhichPokemon]
ld c, a
ld hl, wPartyGainExpFlags
ld b, FLAG_SET
predef FlagActionPredef
.next
pop bc
pop de
pop hl
jr .compareCurrentHPToMaxHP
.notFainted
ld a, [wcf91]
cp REVIVE
jp z, .healingItemNoEffect
cp MAX_REVIVE
jp z, .healingItemNoEffect
.compareCurrentHPToMaxHP
push hl
push bc
ld bc, wPartyMon1MaxHP - (wPartyMon1HP + 1)
add hl, bc ; hl now points to max HP
pop bc
ld a, [hli]
cp b
jr nz, .skipComparingLSB ; no need to compare the LSB's if the MSB's don't match
ld a, [hl]
cp c
.skipComparingLSB
pop hl
jr nz, .notFullHP
.fullHP ; if the pokemon's current HP equals its max HP
ld a, [wcf91]
cp FULL_RESTORE
jp nz, .healingItemNoEffect
inc hl
inc hl
ld a, [hld] ; status ailment
and a ; does the pokemon have a status ailment?
jp z, .healingItemNoEffect
ld a, FULL_HEAL
ld [wcf91], a
dec hl
dec hl
dec hl
jp .cureStatusAilment
.notFullHP ; if the pokemon's current HP doesn't equal its max HP
xor a
ld [wLowHealthAlarm], a ;disable low health alarm
ld [wChannelSoundIDs + Ch5], a
push hl
push de
ld bc, wPartyMon1MaxHP - (wPartyMon1HP + 1)
add hl, bc ; hl now points to max HP
ld a, [hli]
ld [wHPBarMaxHP+1], a