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Upload literally everything from the pokecrystal16 expand-move-ID branch

engine/pokemon/evolve.asm

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+EvolvePokemon:
+	ld hl, wEvolvableFlags
+	xor a
+	ld [hl], a
+	ld a, [wCurPartyMon]
+	ld c, a
+	ld b, SET_FLAG
+	call EvoFlagAction
+EvolveAfterBattle:
+	xor a
+	ld [wMonTriedToEvolve], a
+	dec a
+	ld [wCurPartyMon], a
+	push hl
+	push bc
+	push de
+	ld hl, wPartyCount
+
+	push hl
+
+EvolveAfterBattle_MasterLoop:
+	ld hl, wCurPartyMon
+	inc [hl]
+
+	pop hl
+
+	inc hl
+	ld a, [hl]
+	cp $ff
+	jp z, .ReturnToMap
+
+	ld [wEvolutionOldSpecies], a
+
+	push hl
+	ld a, [wCurPartyMon]
+	ld c, a
+	ld hl, wEvolvableFlags
+	ld b, CHECK_FLAG
+	call EvoFlagAction
+	ld a, c
+	and a
+	jp z, EvolveAfterBattle_MasterLoop
+
+	ld a, [wEvolutionOldSpecies]
+	call GetPokemonIndexFromID
+	ld b, h
+	ld c, l
+	ld hl, EvosAttacksPointers
+	ld a, BANK(EvosAttacksPointers)
+	call LoadDoubleIndirectPointer
+	ldh [hTemp], a
+
+	push hl
+	xor a
+	ld [wMonType], a
+	predef CopyMonToTempMon
+	pop hl
+
+.loop
+	call GetNextEvoAttackByte
+	and a
+	jr z, EvolveAfterBattle_MasterLoop
+
+	ld b, a
+
+	cp EVOLVE_TRADE
+	jr z, .trade
+
+	ld a, [wLinkMode]
+	and a
+	jp nz, .dont_evolve_check
+
+	ld a, b
+	cp EVOLVE_ITEM
+	jp z, .item
+
+	ld a, [wForceEvolution]
+	and a
+	jp nz, .dont_evolve_check
+
+	ld a, b
+	cp EVOLVE_LEVEL
+	jp z, .level
+
+	cp EVOLVE_HAPPINESS
+	jr z, .happiness
+
+; EVOLVE_STAT
+	call GetNextEvoAttackByte
+	ld c, a
+	ld a, [wTempMonLevel]
+	cp c
+	jp c, .skip_evolution_species_parameter
+
+	call IsMonHoldingEverstone
+	jp z, .skip_evolution_species_parameter
+
+	push hl
+	ld de, wTempMonAttack
+	ld hl, wTempMonDefense
+	ld c, 2
+	call CompareBytes
+	ld c, ATK_EQ_DEF
+	jr z, .got_tyrogue_evo
+	ld c, ATK_LT_DEF
+	jr c, .got_tyrogue_evo
+	ld c, ATK_GT_DEF
+.got_tyrogue_evo
+	pop hl
+
+	call GetNextEvoAttackByte
+	cp c
+	jp nz, .skip_evolution_species
+	jp .proceed
+
+.happiness
+	ld a, [wTempMonHappiness]
+	cp HAPPINESS_TO_EVOLVE
+	jp c, .skip_evolution_species_parameter
+
+	call IsMonHoldingEverstone
+	jp z, .skip_evolution_species_parameter
+
+	call GetNextEvoAttackByte
+	cp TR_ANYTIME
+	jr z, .proceed
+	cp TR_MORNDAY
+	jr z, .happiness_daylight
+
+; TR_NITE
+	ld a, [wTimeOfDay]
+	cp NITE_F
+	jp nz, .skip_evolution_species
+	jr .proceed
+
+.happiness_daylight
+	ld a, [wTimeOfDay]
+	cp NITE_F
+	jp z, .skip_evolution_species
+	jr .proceed
+
+.trade
+	ld a, [wLinkMode]
+	and a
+	jp z, .skip_evolution_species_parameter
+
+	call IsMonHoldingEverstone
+	jp z, .skip_evolution_species_parameter
+
+	call GetNextEvoAttackByte
+	ld b, a
+	inc a
+	jr z, .proceed
+
+	ld a, [wLinkMode]
+	cp LINK_TIMECAPSULE
+	jp z, .skip_evolution_species
+
+	ld a, [wTempMonItem]
+	cp b
+	jp nz, .skip_evolution_species
+
+	xor a
+	ld [wTempMonItem], a
+	jr .proceed
+
+.item
+	call GetNextEvoAttackByte
+	ld b, a
+	ld a, [wCurItem]
+	cp b
+	jp nz, .skip_evolution_species
+
+	ld a, [wForceEvolution]
+	and a
+	jp z, .skip_evolution_species
+	ld a, [wLinkMode]
+	and a
+	jp nz, .skip_evolution_species
+	jr .proceed
+
+.level
+	call GetNextEvoAttackByte
+	ld b, a
+	ld a, [wTempMonLevel]
+	cp b
+	jp c, .skip_evolution_species
+	call IsMonHoldingEverstone
+	jp z, .skip_evolution_species
+
+.proceed
+	ld a, [wTempMonLevel]
+	ld [wCurPartyLevel], a
+	ld a, $1
+	ld [wMonTriedToEvolve], a
+
+	ldh a, [hTemp]
+	call GetFarWord
+	call GetPokemonIDFromIndex
+	ld [wEvolutionNewSpecies], a
+	ld a, [wCurPartyMon]
+	ld hl, wPartyMonNicknames
+	call GetNickname
+	call CopyName1
+	ld hl, EvolvingText
+	call PrintText
+
+	ld c, 50
+	call DelayFrames
+
+	xor a
+	ldh [hBGMapMode], a
+	hlcoord 0, 0
+	lb bc, 12, 20
+	call ClearBox
+
+	ld a, $1
+	ldh [hBGMapMode], a
+	call ClearSprites
+
+	farcall EvolutionAnimation
+
+	push af
+	call ClearSprites
+	pop af
+	jp c, CancelEvolution
+
+	ld hl, CongratulationsYourPokemonText
+	call PrintText
+
+	ld a, [wEvolutionNewSpecies]
+	ld [wCurSpecies], a
+	ld [wTempMonSpecies], a
+	ld [wNamedObjectIndex], a
+	call GetPokemonName
+
+	push hl
+	ld hl, EvolvedIntoText
+	call PrintTextboxText
+	farcall StubbedTrainerRankings_MonsEvolved
+
+	ld de, MUSIC_NONE
+	call PlayMusic
+	ld de, SFX_CAUGHT_MON
+	call PlaySFX
+	call WaitSFX
+
+	ld c, 40
+	call DelayFrames
+
+	call ClearTilemap
+	call UpdateSpeciesNameIfNotNicknamed
+	call GetBaseData
+
+	ld hl, wTempMonExp + 2
+	ld de, wTempMonMaxHP
+	ld b, TRUE
+	predef CalcMonStats
+
+	ld a, [wCurPartyMon]
+	ld hl, wPartyMons
+	ld bc, PARTYMON_STRUCT_LENGTH
+	call AddNTimes
+	ld e, l
+	ld d, h
+	ld bc, MON_MAXHP
+	add hl, bc
+	ld a, [hli]
+	ld b, a
+	ld c, [hl]
+	ld hl, wTempMonMaxHP + 1
+	ld a, [hld]
+	sub c
+	ld c, a
+	ld a, [hl]
+	sbc b
+	ld b, a
+	ld hl, wTempMonHP + 1
+	ld a, [hl]
+	add c
+	ld [hld], a
+	ld a, [hl]
+	adc b
+	ld [hl], a
+
+	ld hl, wTempMonSpecies
+	ld bc, PARTYMON_STRUCT_LENGTH
+	call CopyBytes
+
+	ld a, [wCurSpecies]
+	ld [wTempSpecies], a
+	xor a
+	ld [wMonType], a
+	call LearnLevelMoves
+	ld a, [wTempSpecies]
+	call SetSeenAndCaughtMon
+
+	ld a, [wTempSpecies]
+	call GetPokemonIndexFromID
+	ld a, l
+	sub LOW(UNOWN)
+	if HIGH(UNOWN) == 0
+		or h
+	else
+		jr nz, .skip_unown
+		if HIGH(UNOWN) == 1
+			dec h
+		else
+			ld a, h
+			cp HIGH(UNOWN)
+		endc
+	endc
+	jr nz, .skip_unown
+	ld hl, wTempMonDVs
+	predef GetUnownLetter
+	callfar UpdateUnownDex
+
+.skip_unown
+	pop de
+	pop hl
+	ld a, [wTempMonSpecies]
+	ld [hl], a
+	push hl
+	ld l, e
+	ld h, d
+	jp EvolveAfterBattle_MasterLoop
+
+.dont_evolve_check
+	ld a, b
+	cp EVOLVE_STAT
+	jr nz, .skip_evolution_species_parameter
+	inc hl
+.skip_evolution_species_parameter
+	inc hl
+.skip_evolution_species
+	inc hl
+	inc hl
+	jp .loop
+
+.UnusedReturnToMap: ; unreferenced
+	pop hl
+.ReturnToMap:
+	pop de
+	pop bc
+	pop hl
+	ld a, [wLinkMode]
+	and a
+	ret nz
+	ld a, [wBattleMode]
+	and a
+	ret nz
+	ld a, [wMonTriedToEvolve]
+	and a
+	call nz, RestartMapMusic
+	ret
+
+UpdateSpeciesNameIfNotNicknamed:
+	ld a, [wCurSpecies]
+	push af
+	ld a, [wBaseSpecies]
+	ld [wNamedObjectIndex], a
+	call GetPokemonName
+	pop af
+	ld [wCurSpecies], a
+	ld hl, wStringBuffer1
+	ld de, wStringBuffer2
+.loop
+	ld a, [de]
+	inc de
+	cp [hl]
+	inc hl
+	ret nz
+	cp "@"
+	jr nz, .loop
+
+	ld a, [wCurPartyMon]
+	ld bc, MON_NAME_LENGTH
+	ld hl, wPartyMonNicknames
+	call AddNTimes
+	push hl
+	ld a, [wCurSpecies]
+	ld [wNamedObjectIndex], a
+	call GetPokemonName
+	ld hl, wStringBuffer1
+	pop de
+	ld bc, MON_NAME_LENGTH
+	jp CopyBytes
+
+CancelEvolution:
+	ld hl, StoppedEvolvingText
+	call PrintText
+	call ClearTilemap
+	jp EvolveAfterBattle_MasterLoop
+
+IsMonHoldingEverstone:
+	push hl
+	ld a, [wCurPartyMon]
+	ld hl, wPartyMon1Item
+	ld bc, PARTYMON_STRUCT_LENGTH
+	call AddNTimes
+	ld a, [hl]
+	cp EVERSTONE
+	pop hl
+	ret
+
+CongratulationsYourPokemonText:
+	text_far _CongratulationsYourPokemonText
+	text_end
+
+EvolvedIntoText:
+	text_far _EvolvedIntoText
+	text_end
+
+StoppedEvolvingText:
+	text_far _StoppedEvolvingText
+	text_end
+
+EvolvingText:
+	text_far _EvolvingText
+	text_end
+
+LearnLevelMoves:
+	ld a, [wTempSpecies]
+	ld [wCurPartySpecies], a
+	call GetPokemonIndexFromID
+	ld b, h
+	ld c, l
+	ld hl, EvosAttacksPointers
+	ld a, BANK(EvosAttacksPointers)
+	call LoadDoubleIndirectPointer
+	ldh [hTemp], a
+	call SkipEvolutions
+
+.find_move
+	call GetNextEvoAttackByte
+	and a
+	jr z, .done
+
+	ld b, a
+	ld a, [wCurPartyLevel]
+	cp b
+	call GetNextEvoAttackByte
+	ld e, a
+	call GetNextEvoAttackByte
+	ld d, a
+	jr nz, .find_move
+
+	push hl
+	ld h, d
+	ld l, e
+	call GetMoveIDFromIndex
+	ld d, a
+	ld hl, wPartyMon1Moves
+	ld a, [wCurPartyMon]
+	ld bc, PARTYMON_STRUCT_LENGTH
+	call AddNTimes
+
+	ld b, NUM_MOVES
+.check_move
+	call GetNextEvoAttackByte
+	cp d
+	jr z, .has_move
+	dec b
+	jr nz, .check_move
+	jr .learn
+.has_move
+
+	pop hl
+	jr .find_move
+
+.learn
+	ld a, d
+	ld [wPutativeTMHMMove], a
+	ld [wNamedObjectIndex], a
+	call GetMoveName
+	call CopyName1
+	predef LearnMove
+	pop hl
+	jr .find_move
+
+.done
+	ld a, [wCurPartySpecies]
+	ld [wTempSpecies], a
+	ret
+
+FillMoves:
+; Fill in moves at de for wCurPartySpecies at wCurPartyLevel
+
+	push hl
+	push de
+	push bc
+	ld a, [wCurPartySpecies]
+	call GetPokemonIndexFromID
+	ld b, h
+	ld c, l
+	ld hl, EvosAttacksPointers
+	ld a, BANK(EvosAttacksPointers)
+	call LoadDoubleIndirectPointer
+	ldh [hTemp], a
+	call SkipEvolutions
+	jr .GetLevel
+
+.NextMove:
+	pop de
+.GetMove:
+	inc hl
+	inc hl
+.GetLevel:
+	call GetNextEvoAttackByte
+	and a
+	jp z, .done
+	ld b, a
+	ld a, [wCurPartyLevel]
+	cp b
+	jp c, .done
+	ld a, [wSkipMovesBeforeLevelUp]
+	and a
+	jr z, .CheckMove
+	ld a, [wPrevPartyLevel]
+	cp b
+	jr nc, .GetMove
+
+.CheckMove:
+	push de
+	ld c, NUM_MOVES
+	ldh a, [hTemp]
+	push hl
+	call GetFarWord
+	call GetMoveIDFromIndex
+	pop hl
+	ld b, a
+.CheckRepeat:
+	ld a, [de]
+	inc de
+	cp b
+	jr z, .NextMove
+	dec c
+	jr nz, .CheckRepeat
+	pop de
+	push de
+	ld c, NUM_MOVES
+.CheckSlot:
+	ld a, [de]
+	and a
+	jr z, .LearnMove
+	inc de
+	dec c
+	jr nz, .CheckSlot
+	pop de
+	push de
+	push hl
+	ld h, d
+	ld l, e
+	call ShiftMoves
+	ld a, [wEvolutionOldSpecies]
+	and a
+	jr z, .ShiftedMove
+	push de
+	ld bc, wPartyMon1PP - (wPartyMon1Moves + NUM_MOVES - 1)
+	add hl, bc
+	ld d, h
+	ld e, l
+	call ShiftMoves
+	pop de
+
+.ShiftedMove:
+	pop hl
+
+.LearnMove:
+	ldh a, [hTemp]
+	push hl
+	call GetFarWord
+	call GetMoveIDFromIndex
+	pop hl
+	ld b, a
+	ld [de], a
+	ld a, [wEvolutionOldSpecies]
+	and a
+	jr z, .NextMove
+	push hl
+	ld a, b
+	ld hl, MON_PP - MON_MOVES
+	add hl, de
+	push hl
+	ld l, a
+	ld a, MOVE_PP
+	call GetMoveAttribute
+	pop hl
+	ld [hl], a
+	pop hl
+	jp .NextMove
+
+.done
+	pop bc
+	pop de
+	pop hl
+	ret
+
+ShiftMoves:
+	ld c, NUM_MOVES - 1
+.loop
+	inc de
+	ld a, [de]
+	ld [hli], a
+	dec c
+	jr nz, .loop
+	ret
+
+EvoFlagAction:
+	push de
+	ld d, $0
+	predef SmallFarFlagAction
+	pop de
+	ret
+
+GetLowestEvolutionStage:
+; Return the first mon to evolve into wCurPartySpecies.
+; Instead of looking it up, we just load it from a table. This is a lot more efficient.
+	ld a, [wCurPartySpecies]
+	call GetPokemonIndexFromID
+	ld bc, FirstEvoStages - 2
+	add hl, hl
+	add hl, bc
+	ld a, BANK(FirstEvoStages)
+	call GetFarWord
+	call GetPokemonIDFromIndex
+	ld [wCurPartySpecies], a
+	ret
+
+SkipEvolutions::
+; Receives a pointer to the evos and attacks for a mon in b:hl, and skips to the attacks.
+	ld a, b
+	call GetFarByte
+	inc hl
+	and a
+	ret z
+	cp EVOLVE_STAT
+	jr nz, .no_extra_skip
+	inc hl
+.no_extra_skip
+	inc hl
+	inc hl
+	inc hl
+	jr SkipEvolutions
+
+DetermineEvolutionItemResults::
+; in: b:de: pointer to evos and attacks struct, wCurItem: item
+; out: de: species ID or zero; a, b, hl: clobbered
+	ld h, d
+	ld l, e
+	ld de, 0
+	ld a, b
+	ldh [hTemp], a
+.loop
+	call GetNextEvoAttackByte
+	and a
+	ret z
+	cp EVOLVE_STAT
+	jr z, .skip_species_two_parameters
+	cp EVOLVE_ITEM
+	jr nz, .skip_species_parameter
+	call GetNextEvoAttackByte
+	ld b, a
+	ld a, [wCurItem]
+	cp b
+	jr nz, .skip_species
+	ldh a, [hTemp]
+	call GetFarWord
+	ld d, h
+	ld e, l
+	ret
+
+.skip_species_two_parameters
+	inc hl
+.skip_species_parameter
+	inc hl
+.skip_species
+	inc hl
+	inc hl
+	jr .loop
+
+GetNextEvoAttackByte:
+	ldh a, [hTemp]
+	call GetFarByte
+	inc hl
+	ret