INCLUDE "includes.asm"


SECTION "Hardware", ROM0

INCLUDE "rst.asm"
INCLUDE "interrupts.asm"


SECTION "Header", ROM0[$100]

Start:
	nop
	jp _Start


SECTION "Home", ROM0[$150]

INCLUDE "home/init.asm"
INCLUDE "home/vblank.asm"
INCLUDE "home/delay.asm"
INCLUDE "home/rtc.asm"
INCLUDE "home/fade.asm"
INCLUDE "home/lcd.asm"
INCLUDE "home/time.asm"
INCLUDE "home/serial.asm"
INCLUDE "home/joypad.asm"
INCLUDE "home/decompress.asm"
INCLUDE "home/palettes.asm"
INCLUDE "home/copy.asm"
INCLUDE "home/text.asm"
INCLUDE "home/video.asm"
INCLUDE "home/map_objects.asm"
INCLUDE "home/sine.asm"
INCLUDE "home/movement.asm"
INCLUDE "home/tilemap.asm"
INCLUDE "home/menu.asm"
INCLUDE "home/handshake.asm"
INCLUDE "home/game_time.asm"
INCLUDE "home/map.asm"


Function2d43: ; 2d43
; Inexplicably empty.
; Seen in PredefPointers.
	rept 16
	nop
	endr
	ret
; 2d54


INCLUDE "home/farcall.asm"
INCLUDE "home/predef.asm"
INCLUDE "home/window.asm"


Function2e4e: ; 2e4e
	scf
	ret
; 2e50


INCLUDE "home/flag.asm"


Function2ebb: ; 2ebb
	ld a, [$c2cc]
	bit 1, a
	ret z
	ld a, [hJoyDown]
	bit A_BUTTON, a
	ret
; 2ec6


Function2ec6: ; 2ec6
	xor a
	ret
; 2ec8

Function2ec8: ; 2ec8
	xor a
	dec a
	ret
; 2ecb

Function2ecb: ; 2ecb
	push hl
	ld hl, $c2cc
	bit 1, [hl]
	pop hl
	ret
; 2ed3


Function2ed3: ; 0x2ed3
; disables overworld sprite updating?
	xor a
	ld [$ffde], a
	ld a, [VramState]
	res 0, a
	ld [VramState], a
	ld a, $0
	ld [$c2ce], a
	ret
; 0x2ee4

Function2ee4: ; 2ee4
	ld a, $1
	ld [$c2ce], a
	ld a, [VramState]
	set 0, a
	ld [VramState], a
	ld a, $1
	ld [$ffde], a
	ret
; 2ef6


INCLUDE "home/string.asm"


IsInJohto: ; 2f17
; Return 0 if the player is in Johto, and 1 in Kanto.

	ld a, [MapGroup]
	ld b, a
	ld a, [MapNumber]
	ld c, a
	call GetWorldMapLocation

	cp FAST_SHIP
	jr z, .Johto

	cp SPECIAL_MAP
	jr nz, .CheckRegion

	ld a, [BackupMapGroup]
	ld b, a
	ld a, [BackupMapNumber]
	ld c, a
	call GetWorldMapLocation

.CheckRegion
	cp KANTO_LANDMARK
	jr nc, .Kanto

.Johto
	xor a
	ret

.Kanto
	ld a, 1
	ret
; 2f3e


Function2f3e: ; 2f3e
	ret
; 2f3f


INCLUDE "home/item.asm"
INCLUDE "home/random.asm"
INCLUDE "home/sram.asm"


; Register aliases

_hl_: ; 2fec
	jp [hl]
; 2fed

_de_: ; 2fed
	push de
	ret
; 2fef


INCLUDE "home/double_speed.asm"


ClearSprites: ; 300b
; Erase OAM data
	ld hl, Sprites
	ld b, SpritesEnd - Sprites
	xor a
.loop
	ld [hli], a
	dec b
	jr nz, .loop
	ret
; 3016

HideSprites: ; 3016
; Set all OAM y-positions to 160 to hide them offscreen
	ld hl, Sprites
	ld de, 4 ; length of an OAM struct
	ld b, (SpritesEnd - Sprites) / 4 ; number of OAM structs
	ld a, 160 ; y
.loop
	ld [hl], a
	add hl, de
	dec b
	jr nz, .loop
	ret
; 3026


INCLUDE "home/copy2.asm"


Function309d: ; 309d
	ld a, [rSVBK]
	push af
	ld a, 2
	ld [rSVBK], a
	ld hl, TileMap
	ld de, $d000
	ld bc, 360
	call CopyBytes
	pop af
	ld [rSVBK], a
	ret
; 30b4

Function30b4: ; 30b4
	xor a
	ld [hBGMapMode], a
	call Function30bf
	ld a, 1
	ld [hBGMapMode], a
	ret
; 30bf

Function30bf: ; 30bf
	ld a, [rSVBK]
	push af
	ld a, 2
	ld [rSVBK], a
	ld hl, $d000
	ld de, TileMap
	ld bc, 360
	call CopyBytes
	pop af
	ld [rSVBK], a
	ret
; 30d6


CopyName1: ; 30d6
	ld hl, StringBuffer2

CopyName2: ; 30d9
.loop
	ld a, [de]
	inc de
	ld [hli], a
	cp "@"
	jr nz, .loop
	ret
; 30e1

IsInArray: ; 30e1
; Find value a for every de bytes in array hl.
; Return index in b and carry if found.

	ld b, 0
	ld c, a
.loop
	ld a, [hl]
	cp $ff
	jr z, .NotInArray
	cp c
	jr z, .InArray
	inc b
	add hl, de
	jr .loop

.NotInArray
	and a
	ret

.InArray
	scf
	ret
; 30f4

SkipNames: ; 0x30f4
; skips n names where n = a
	ld bc, $000b ; name length
	and a
	ret z
.loop
	add hl, bc
	dec a
	jr nz, .loop
	ret
; 0x30fe

AddNTimes: ; 0x30fe
; adds bc n times where n = a
	and a
	ret z
.loop
	add hl, bc
	dec a
	jr nz, .loop
	ret
; 0x3105


INCLUDE "home/math.asm"


PrintLetterDelay: ; 313d
; Wait before printing the next letter.

; The text speed setting in Options is actually a frame count:
; 	fast: 1 frame
; 	mid:  3 frames
; 	slow: 5 frames

; $cfcf[!0] and A or B override text speed with a one-frame delay.
; Options[4] and $cfcf[!1] disable the delay.

; delay off?
	ld a, [Options]
	bit 4, a
	ret nz

; non-scrolling text?
	ld a, [$cfcf]
	bit 1, a
	ret z

	push hl
	push de
	push bc

	ld hl, hOAMUpdate
	ld a, [hl]
	push af

; orginally turned oam update off...
;	ld a, 1
	ld [hl], a

; force fast scroll?
	ld a, [$cfcf]
	bit 0, a
	jr z, .fast

; text speed
	ld a, [Options]
	and %111
	jr .updatedelay

.fast
	ld a, 1

.updatedelay
	ld [TextDelayFrames], a

.checkjoypad
	call GetJoypadPublic

; input override
	ld a, [$c2d7]
	and a
	jr nz, .wait

; Wait one frame if holding A or B.
	ld a, [hJoyDown]
	bit 0, a ; A_BUTTON
	jr z, .checkb
	jr .delay
.checkb
	bit 1, a ; B_BUTTON
	jr z, .wait

.delay
	call DelayFrame
	jr .end

.wait
	ld a, [TextDelayFrames]
	and a
	jr nz, .checkjoypad

.end
	pop af
	ld [hOAMUpdate], a
	pop bc
	pop de
	pop hl
	ret
; 318c


CopyDataUntil: ; 318c
; Copy [hl .. bc) to [de .. de + bc - hl).

; In other words, the source data is
; from hl up to but not including bc,
; and the destination is de.

	ld a, [hli]
	ld [de], a
	inc de
	ld a, h
	cp b
	jr nz, CopyDataUntil
	ld a, l
	cp c
	jr nz, CopyDataUntil
	ret
; 0x3198


PrintNum: ; 3198
	ld a, [hROMBank]
	push af
	ld a, BANK(_PrintNum)
	rst Bankswitch

	call _PrintNum

	pop af
	rst Bankswitch
	ret
; 31a4


Function31a4: ; 31a4
	ld a, [hROMBank]
	push af
	ld a, BANK(Function1061ef)
	rst Bankswitch

	call Function1061ef

	pop af
	rst Bankswitch
	ret
; 31b0


FarPrintText: ; 31b0
	ld [hBuffer], a
	ld a, [hROMBank]
	push af
	ld a, [hBuffer]
	rst Bankswitch

	call PrintText

	pop af
	rst Bankswitch
	ret
; 31be


CallPointerAt: ; 31be
	ld a, [hROMBank]
	push af
	ld a, [hli]
	rst Bankswitch

	ld a, [hli]
	ld h, [hl]
	ld l, a

	call _hl_

	pop hl
	ld a, h
	rst Bankswitch
	ret
; 31cd


Function31cd: ; 31cd
; Push pointer hl in the current bank to $d0e8.
	ld a, [hROMBank]

Function31cf: ; 31cf
; Push pointer a:hl to $d0e8.
	ld [$d0e8], a
	ld a, l
	ld [$d0e9], a
	ld a, h
	ld [$d0ea], a
	ret
; 31db


StringCmp: ; 31db
; Compare c bytes at de and hl.
; Return z if they all match.
	ld a, [de]
	cp [hl]
	ret nz
	inc de
	inc hl
	dec c
	jr nz, StringCmp
	ret
; 0x31e4


CompareLong: ; 31e4
; Compare bc bytes at de and hl.
; Return carry if they all match.

	ld a, [de]
	cp [hl]
	jr nz, .Diff

	inc de
	inc hl
	dec bc

	ld a, b
	or c
	jr nz, CompareLong

	scf
	ret

.Diff
	and a
	ret
; 31f3


WhiteBGMap: ; 31f3
	call ClearPalettes
WaitBGMap: ; 31f6
; Tell VBlank to update BG Map
	ld a, 1 ; BG Map 0 tiles
	ld [hBGMapMode], a
; Wait for it to do its magic
	ld c, 4
	call DelayFrames
	ret
; 3200

Function3200: ; 0x3200
	ld a, [hCGB]
	and a
	jr z, .asm_320e
	ld a, 2
	ld [hBGMapMode], a
	ld c, 4
	call DelayFrames

.asm_320e
	ld a, 1
	ld [hBGMapMode], a
	ld c, 4
	call DelayFrames
	ret
; 0x3218


Function3218: ; 3218
	ld a, [hCGB]
	and a
	ret
; 321c


Function321c: ; 321c
	ld a, [hCGB]
	and a
	jr z, .asm_322e

	ld a, [$c2ce]
	cp 0
	jr z, .asm_322e

	ld a, 1
	ld [hBGMapMode], a
	jr Function323d

.asm_322e
	ld a, 1
	ld [hBGMapMode], a
	ld c, 4
	call DelayFrames
	ret
; 3238

Function3238: ; 3238
	ld a, [hCGB]
	and a
	jr z, WaitBGMap

Function323d: ; 323d
	jr Function3246
; 323f

Function323f: ; 323f
	callba Function104000
	ret
; 3246

Function3246: ; 3246
	ld a, [hBGMapMode]
	push af
	xor a
	ld [hBGMapMode], a
	ld a, [$ffde]
	push af
	xor a
	ld [$ffde], a
.asm_3252
	ld a, [rLY]
	cp $7f
	jr c, .asm_3252 ; 3256 $fa
	di
	ld a, $1
	ld [rVBK], a
	ld hl, AttrMap
	call Function327b
	ld a, $0
	ld [rVBK], a
	ld hl, TileMap
	call Function327b
.asm_326d
	ld a, [rLY]
	cp $7f
	jr c, .asm_326d ; 3271 $fa
	ei
	pop af
	ld [$ffde], a
	pop af
	ld [hBGMapMode], a
	ret
; 327b

Function327b: ; 327b
	ld [hSPBuffer], sp
	ld sp, hl
	ld a, [$ffd7]
	ld h, a
	ld l, $0
	ld a, $12
	ld [$ffd3], a
	ld b, $2
	ld c, $41
.asm_328c
	pop de

rept 9
.loop\@
	ld a, [$ff00+c]
	and b
	jr nz, .loop\@
	ld [hl], e
	inc l
	ld [hl], d
	inc l
	pop de
endr

.asm_32de
	ld a, [$ff00+c]
	and b
	jr nz, .asm_32de
	ld [hl], e
	inc l
	ld [hl], d
	inc l

	ld de, $000c
	add hl, de
	ld a, [$ffd3]
	dec a
	ld [$ffd3], a
	jr nz, .asm_328c
	ld a, [hSPBuffer]
	ld l, a
	ld a, [$ffda]
	ld h, a
	ld sp, hl
	ret
; 32f9



Function32f9: ; 32f9
	ld a, [hCGB]
	and a
	jr nz, .asm_3309
	ld a, $e4
	ld [rBGP], a
	ld a, $d0
	ld [rOBP0], a
	ld [rOBP1], a
	ret

.asm_3309
	push de
	ld a, $e4
	call DmgToCgbBGPals
	ld de, $e4e4
	call DmgToCgbObjPals
	pop de
	ret
; 3317


ClearPalettes: ; 3317
; Make all palettes white

; CGB: make all the palette colors white
	ld a, [hCGB]
	and a
	jr nz, .cgb
	
; DMG: just change palettes to 0 (white)
	xor a
	ld [rBGP], a
	ld [rOBP0], a
	ld [rOBP1], a
	ret
	
.cgb
	ld a, [rSVBK]
	push af

	ld a, 5
	ld [rSVBK], a

; Fill BGPals and OBPals with $ffff (white)
	ld hl, BGPals
	ld bc, $80
	ld a, $ff
	call ByteFill

	pop af
	ld [rSVBK], a

; Request palette update
	ld a, 1
	ld [hCGBPalUpdate], a
	ret
; 333e


ClearSGB: ; 333e
	ld b, $ff

GetSGBLayout: ; 3340
; load sgb packets unless dmg

	ld a, [hCGB]
	and a
	jr nz, .dosgb
	
	ld a, [hSGB]
	and a
	ret z
	
.dosgb
	ld a, $31 ; LoadSGBLayout
	jp Predef
; 334e


SetHPPal: ; 334e
; Set palette for hp bar pixel length e at hl.
	call GetHPPal
	ld [hl], d
	ret
; 3353


GetHPPal: ; 3353
; Get palette for hp bar pixel length e in d.

	ld d, 0 ; green
	ld a, e
	cp 24
	ret nc
	inc d ; yellow
	cp 10
	ret nc
	inc d ; red
	ret
; 335f


CountSetBits: ; 0x335f
; Count the number of set bits in b bytes starting from hl.
; Return in a, c and [$d265].

	ld c, 0
.next
	ld a, [hli]
	ld e, a
	ld d, 8

.count
	srl e
	ld a, 0
	adc c
	ld c, a
	dec d
	jr nz, .count

	dec b
	jr nz, .next

	ld a, c
	ld [$d265], a
	ret
; 0x3376


GetWeekday: ; 3376
	ld a, [CurDay]
.mod
	sub 7
	jr nc, .mod
	add 7
	ret
; 3380


INCLUDE "home/pokedex_flags.asm"


NamesPointers: ; 33ab
	dbw BANK(PokemonNames), PokemonNames
	dbw BANK(MoveNames), MoveNames
	dbw 0, 0
	dbw BANK(ItemNames), ItemNames
	dbw 0, PartyMonOT
	dbw 0, OTPartyMonOT
	dbw BANK(TrainerClassNames), TrainerClassNames
	dbw $04, $4b52 ; ????
; 33c3


GetName: ; 33c3
; Return name CurSpecies from name list $cf61 in StringBuffer1.

	ld a, [hROMBank]
	push af
	push hl
	push bc
	push de

	ld a, [$cf61]
	cp 1 ; Pokemon names
	jr nz, .NotPokeName

	ld a, [CurSpecies]
	ld [$d265], a
	call GetPokemonName
	ld hl, 11
	add hl, de
	ld e, l
	ld d, h
	jr .done

.NotPokeName
	ld a, [$cf61]
	dec a
	ld e, a
	ld d, 0
	ld hl, NamesPointers
	add hl, de
	add hl, de
	add hl, de
	ld a, [hli]
	rst Bankswitch
	ld a, [hli]
	ld h, [hl]
	ld l, a

	ld a, [CurSpecies]
	dec a
	call GetNthString

	ld de, StringBuffer1
	ld bc, $000d
	call CopyBytes

.done
	ld a, e
	ld [$d102], a
	ld a, d
	ld [$d103], a

	pop de
	pop bc
	pop hl
	pop af
	rst Bankswitch
	ret
; 3411


GetNthString: ; 3411
; Return the address of the
; ath string starting from hl.

	and a
	ret z

	push bc
	ld b, a
	ld c, "@"
.readChar
	ld a, [hli]
	cp c
	jr nz, .readChar
	dec b
	jr nz, .readChar
	pop bc
	ret
; 3420


GetBasePokemonName: ; 3420
; Discards gender (Nidoran).

	push hl
	call GetPokemonName

	ld hl, StringBuffer1
.loop
	ld a, [hl]
	cp "@"
	jr z, .quit
	cp "♂"
	jr z, .end
	cp "♀"
	jr z, .end
	inc hl
	jr .loop
.end
	ld [hl], "@"
.quit
	pop hl
	ret

; 343b


GetPokemonName: ; 343b
; Get Pokemon name $d265.

	ld a, [hROMBank]
	push af
	push hl
	ld a, BANK(PokemonNames)
	rst Bankswitch

; Each name is ten characters
	ld a, [$d265]
	dec a
	ld d, 0
	ld e, a
	ld h, 0
	ld l, a
	add hl, hl
	add hl, hl
	add hl, de
	add hl, hl
	ld de, PokemonNames
	add hl, de

; Terminator
	ld de, StringBuffer1
	push de
	ld bc, PKMN_NAME_LENGTH - 1
	call CopyBytes
	ld hl, StringBuffer1 + PKMN_NAME_LENGTH - 1
	ld [hl], "@"
	pop de

	pop hl
	pop af
	rst Bankswitch
	ret
; 3468


GetItemName: ; 3468
; Get item name $d265.

	push hl
	push bc
	ld a, [$d265]

	cp TM_01
	jr nc, .TM

	ld [CurSpecies], a
	ld a, 4 ; Item names
	ld [$cf61], a
	call GetName
	jr .Copied
.TM
	call GetTMHMName
.Copied
	ld de, StringBuffer1
	pop bc
	pop hl
	ret
; 3487


GetTMHMName: ; 3487
; Get TM/HM name by item id $d265.

	push hl
	push de
	push bc
	ld a, [$d265]
	push af

; TM/HM prefix
	cp HM_01
	push af
	jr c, .TM

	ld hl, .HMText
	ld bc, .HMTextEnd - .HMText
	jr .asm_34a1

.TM
	ld hl, .TMText
	ld bc, .TMTextEnd - .TMText

.asm_34a1
	ld de, StringBuffer1
	call CopyBytes

; TM/HM number
	push de
	ld a, [$d265]
	ld c, a
	callab GetTMHMNumber
	pop de

; HM numbers start from 51, not 1
	pop af
	ld a, c
	jr c, .asm_34b9
	sub NUM_TMS

; Divide and mod by 10 to get the top and bottom digits respectively
.asm_34b9
	ld b, "0"
.mod10
	sub 10
	jr c, .asm_34c2
	inc b
	jr .mod10
.asm_34c2
	add 10

	push af
	ld a, b
	ld [de], a
	inc de
	pop af

	ld b, "0"
	add b
	ld [de], a

; End the string
	inc de
	ld a, "@"
	ld [de], a

	pop af
	ld [$d265], a
	pop bc
	pop de
	pop hl
	ret

.TMText
	db "TM"
.TMTextEnd
	db "@"

.HMText
	db "HM"
.HMTextEnd
	db "@"
; 34df


IsHM: ; 34df
	cp HM_01
	jr c, .NotHM
	scf
	ret
.NotHM
	and a
	ret
; 34e7


IsHMMove: ; 34e7
	ld hl, .HMMoves
	ld de, 1
	jp IsInArray

.HMMoves
	db CUT
	db FLY
	db SURF
	db STRENGTH
	db FLASH
	db WATERFALL
	db WHIRLPOOL
	db $ff
; 34f8


GetMoveName: ; 34f8
	push hl
; move name
	ld a, $2 ; move names
	ld [$cf61], a
; move id
	ld a, [$d265]
	ld [CurSpecies], a

	call GetName
	ld de, StringBuffer1
	pop hl
	ret
; 350c


Function350c: ; 350c
	call Function1c66
	ld a, [hROMBank]
	push af
	ld a, $9
	rst Bankswitch

	call Function245af
	call Function3524
	call Function245cb
	pop af
	rst Bankswitch

	ld a, [$cf73]
	ret
; 3524

Function3524: ; 3524
	ld hl, VramState
	bit 0, [hl]
	jp nz, UpdateTimePals
	jp Function32f9
; 352f

Function352f: ; 352f
	ld a, [$cf82]
	dec a
	ld b, a
	ld a, [$cf84]
	sub b
	ld d, a
	ld a, [$cf83]
	dec a
	ld c, a
	ld a, [$cf85]
	sub c
	ld e, a
	push de
	call GetTileCoord
	pop bc
	jp TextBox
; 354b

Function354b: ; 354b
	call DelayFrame
	ld a, [$ffaa]
	push af
	ld a, $1
	ld [$ffaa], a
	call Functiona57
	pop af
	ld [$ffaa], a
	ld a, [$ffa9]
	and $f0
	ld c, a
	ld a, [hJoyPressed]
	and $f
	or c
	ld c, a
	ret
; 3567


Function3567: ; 3567
	ld a, [hROMBank]
	push af
	call Function2c52
	call Function3574
	pop bc
	ld a, b
	rst Bankswitch

	ret
; 3574

Function3574: ; 3574
	ld hl, $0001
	add hl, de
	ld a, [hl]
	cp $ff
	jr z, .asm_3597
	ld l, a
	push hl
	call Function3599
	pop hl
	jr nc, .asm_3597
	ld d, a
	ld e, l
	call Function35de
	jr nc, .asm_3597
	call Function2631
	callba Function96c56
	scf
	ret

.asm_3597
	and a
	ret
; 3599

Function3599: ; 3599
	push de
	ld hl, $0010
	add hl, de
	ld a, [hl]
	ld hl, $0011
	add hl, de
	ld e, [hl]
	sub $4
	ld d, a
	ld a, e
	sub $4
	ld e, a
	call Function35b0
	pop de
	ret
; 35b0

Function35b0: ; 35b0
	ld hl, $dbfc
	ld a, [hli]
	ld h, [hl]
	ld l, a
	ld a, [$dbfb]
	and a
	jr z, .asm_35d3
.asm_35bc
	push af
	ld a, [hl]
	cp e
	jr nz, .asm_35c8
	inc hl
	ld a, [hld]
	cp d
	jr nz, .asm_35c8
	jr .asm_35d5

.asm_35c8
	ld a, $5
	add l
	ld l, a
	jr nc, .asm_35cf
	inc h

.asm_35cf
	pop af
	dec a
	jr nz, .asm_35bc

.asm_35d3
	and a
	ret

.asm_35d5
	pop af
	ld d, a
	ld a, [$dbfb]
	sub d
	inc a
	scf
	ret
; 35de

Function35de: ; 35de
	inc e
	ld hl, $0001
	add hl, bc
	ld a, [hli]
	ld h, [hl]
	ld l, a
.asm_35e6
	ld a, [hli]
	cp $ff
	jr z, .asm_35fc
	cp d
	jr nz, .asm_35f7
	ld a, [hli]
	cp e
	jr nz, .asm_35f8
	ld a, [hli]
	ld h, [hl]
	ld l, a
	jr .asm_35fe

.asm_35f7
	inc hl

.asm_35f8
	inc hl
	inc hl
	jr .asm_35e6

.asm_35fc
	and a
	ret

.asm_35fe
	scf
	ret
; 3600


CheckTrainerBattle2: ; 3600

	ld a, [hROMBank]
	push af
	call Function2c52

	call CheckTrainerBattle

	pop bc
	ld a, b
	rst Bankswitch
	ret
; 360d


CheckTrainerBattle: ; 360d
; Check if any trainer on the map sees the player and wants to battle.

; Skip the player object.
	ld a, 1
	ld de, MapObjects + OBJECT_LENGTH

.loop

; Start a battle if the object:

	push af
	push de

; Has a sprite
	ld hl, $0001
	add hl, de
	ld a, [hl]
	and a
	jr z, .next

; Is a trainer
	ld hl, $0008
	add hl, de
	ld a, [hl]
	and $f
	cp $2
	jr nz, .next

; Is visible on the map
	ld hl, $0000
	add hl, de
	ld a, [hl]
	cp $ff
	jr z, .next

; Is facing the player...
	call Function1ae5
	call FacingPlayerDistance_bc
	jr nc, .next

; ...within their sight range
	ld hl, $0009
	add hl, de
	ld a, [hl]
	cp b
	jr c, .next

; And hasn't already been beaten
	push bc
	push de
	ld hl, $000a
	add hl, de
	ld a, [hli]
	ld h, [hl]
	ld l, a
	ld e, [hl]
	inc hl
	ld d, [hl]
	ld b, CHECK_FLAG
	call EventFlagAction
	ld a, c
	pop de
	pop bc
	and a
	jr z, .asm_3666

.next
	pop de
	ld hl, OBJECT_LENGTH
	add hl, de
	ld d, h
	ld e, l

	pop af
	inc a
	cp NUM_OBJECTS
	jr nz, .loop
	xor a
	ret

.asm_3666
	pop de
	pop af
	ld [$ffe0], a
	ld a, b
	ld [$d03f], a
	ld a, c
	ld [MartPointer], a
	jr Function367e
; 3674

Function3674: ; 3674
	ld a, $1
	ld [$d03f], a
	ld a, $ff
	ld [MartPointer], a

Function367e: ; 367e
	call GetMapScriptHeaderBank
	ld [EngineBuffer1], a
	ld a, [$ffe0]
	call GetMapObject
	ld hl, $000a
	add hl, bc
	ld a, [EngineBuffer1]
	call GetFarHalfword
	ld de, $d041
	ld bc, $000d
	ld a, [EngineBuffer1]
	call FarCopyBytes
	xor a
	ld [$d04d], a
	scf
	ret
; 36a5


FacingPlayerDistance_bc: ; 36a5

	push de
	call FacingPlayerDistance
	ld b, d
	ld c, e
	pop de
	ret
; 36ad


FacingPlayerDistance: ; 36ad
; Return carry if the sprite at bc is facing the player,
; and its distance in d.

	ld hl, $0010 ; x
	add hl, bc
	ld d, [hl]

	ld hl, $0011 ; y
	add hl, bc
	ld e, [hl]

	ld a, [MapX]
	cp d
	jr z, .CheckY

	ld a, [MapY]
	cp e
	jr z, .CheckX

	and a
	ret

.CheckY
	ld a, [MapY]
	sub e
	jr z, .NotFacing
	jr nc, .Above

; Below
	cpl
	inc a
	ld d, a
	ld e, UP << 2
	jr .CheckFacing

.Above
	ld d, a
	ld e, DOWN << 2
	jr .CheckFacing

.CheckX
	ld a, [MapX]
	sub d
	jr z, .NotFacing
	jr nc, .Left

; Right
	cpl
	inc a
	ld d, a
	ld e, LEFT << 2
	jr .CheckFacing

.Left
	ld d, a
	ld e, RIGHT << 2

.CheckFacing
	call GetSpriteDirection
	cp e
	jr nz, .NotFacing
	scf
	ret

.NotFacing
	and a
	ret
; 36f5


Function36f5: ; 36f5
	push bc
	ld hl, $0001
	add hl, bc
	ld a, [hl]
	call GetMapObject
	ld hl, $000a
	add hl, bc
	ld a, [hli]
	ld h, [hl]
	ld l, a
	call GetMapScriptHeaderBank
	call GetFarHalfword
	ld d, h
	ld e, l
	push de
	ld b, $2
	call EventFlagAction
	pop de
	ld a, c
	and a
	pop bc
	ret
; 3718


Function3718: ; 3718
	ld a, [BattleType]
	cp $1
	jr .asm_3724

	ld hl, WalkingTile
	jr .asm_3731

.asm_3724
	ld a, [$d0ee]
	ld hl, WalkingTile
	and $f
	jr z, .asm_3731
	ld hl, $d049

.asm_3731
	ld a, [hli]
	ld h, [hl]
	ld l, a
	call GetMapScriptHeaderBank
	call FarPrintText
	call WaitBGMap
	call Functiona80
	ret
; 3741



IsAPokemon: ; 3741
; Return carry if species a is not a Pokemon.
	and a
	jr z, .NotAPokemon
	cp EGG
	jr z, .Pokemon
	cp NUM_POKEMON + 1
	jr c, .Pokemon

.NotAPokemon
	scf
	ret

.Pokemon
	and a
	ret
; 3750


DrawHPBar: ; 3750
; Draw an HP bar d tiles long at hl
; Fill it up to e pixels

	push hl
	push de
	push bc

; Place 'HP:'
	ld a, $60
	ld [hli], a
	ld a, $61
	ld [hli], a

; Draw a template
	push hl
	ld a, $62 ; empty bar
.template
	ld [hli], a
	dec d
	jr nz, .template
	ld a, $6b ; bar end
	add b
	ld [hl], a
	pop hl

; Safety check # pixels
	ld a, e
	and a
	jr nz, .fill
	ld a, c
	and a
	jr z, .done
	ld e, 1

.fill
; Keep drawing tiles until pixel length is reached
	ld a, e
	sub TILE_WIDTH
	jr c, .lastbar

	ld e, a
	ld a, $6a ; full bar
	ld [hli], a
	ld a, e
	and a
	jr z, .done
	jr .fill

.lastbar
	ld a, $62  ; empty bar
	add e      ; + e
	ld [hl], a

.done
	pop bc
	pop de
	pop hl
	ret
; 3786


Function3786: ; 3786
	ld a, $1
	ld [$c2c6], a

Function378b: ; 378b
	ld a, [CurPartySpecies]
	call IsAPokemon
	jr c, .asm_37ad
	push hl
	ld de, VTiles2
	ld a, $3c
	call Predef
	pop hl
	xor a
	ld [$ffad], a
	ld bc, $0707
	ld a, $13
	call Predef
	xor a
	ld [$c2c6], a
	ret

.asm_37ad
	xor a
	ld [$c2c6], a
	inc a
	ld [CurPartySpecies], a
	ret
; 37b6

Function37b6: ; 37b6
	push af
	ld a, $1
	ld [$c2bc], a
	pop af
	call Function37e2
	call WaitSFX
	ret
; 37c4

Function37c4: ; 37c4
	push af
	ld a, $1
	ld [$c2bc], a
	pop af
	jp Function37e2
; 37ce

Function37ce: ; 37ce
	call Function37d5
	call WaitSFX
	ret
; 37d5

Function37d5: ; 37d5
	push af
	xor a
	ld [$c2bc], a
	ld [CryTracks], a
	pop af
	call Function37e2
	ret
; 37e2

Function37e2: ; 37e2
	push hl
	push de
	push bc
	call Function381e
	jr c, .asm_37ef
	ld e, c
	ld d, b
	call PlayCryHeader

.asm_37ef
	pop bc
	pop de
	pop hl
	ret
; 37f3

Function37f3: ; 37f3
	call Function381e
	ret c
	ld a, [hROMBank]
	push af
	ld a, $3c
	rst Bankswitch

	ld hl, $6787
	add hl, bc
	add hl, bc
	add hl, bc
	add hl, bc
	add hl, bc
	add hl, bc
	ld e, [hl]
	inc hl
	ld d, [hl]
	inc hl
	ld a, [hli]
	ld [CryPitch], a
	ld a, [hli]
	ld [CryEcho], a
	ld a, [hli]
	ld [CryLength], a
	ld a, [hl]
	ld [$c2b3], a
	pop af
	rst Bankswitch

	and a
	ret
; 381e

Function381e: ; 381e
	and a
	jr z, .asm_382b
	cp $fc
	jr nc, .asm_382b
	dec a
	ld c, a
	ld b, $0
	and a
	ret

.asm_382b
	scf
	ret
; 382d


PrintLevel: ; 382d
; Print TempMonLevel at hl

	ld a, [TempMonLevel]
	ld [hl], $6e ; ":L"
	inc hl

; How many digits?
	ld c, 2
	cp 100
	jr c, Function3842

; 3-digit numbers overwrite the :L.
	dec hl
	inc c
	jr Function3842
; 383d

Function383d: ; 383d
; Print :L and all 3 digits
	ld [hl], $6e
	inc hl
	ld c, 3
; 3842

Function3842: ; 3842
	ld [$d265], a
	ld de, $d265
	ld b,  %01000001 ; flags
	jp PrintNum
; 384d


Function384d: ; 384d
	ld hl, $d25e
	ld c, a
	ld b, $0
	add hl, bc
	ld a, [hl]
	ret
; 3856


GetBaseData: ; 3856
	push bc
	push de
	push hl
	ld a, [hROMBank]
	push af
	ld a, BANK(BaseData)
	rst Bankswitch
	
; Egg doesn't have BaseData
	ld a, [CurSpecies]
	cp EGG
	jr z, .egg

; Get BaseData
	dec a
	ld bc, BaseData1 - BaseData0
	ld hl, BaseData
	call AddNTimes
	ld de, CurBaseData
	ld bc, BaseData1 - BaseData0
	call CopyBytes
	jr .end
	
.egg
; ????
	ld de, $7d9c
	
; Sprite dimensions
	ld b, $55 ; 5x5
	ld hl, BasePicSize
	ld [hl], b
	
; ????
	ld hl, BasePadding
	ld [hl], e
	inc hl
	ld [hl], d
	inc hl
	ld [hl], e
	inc hl
	ld [hl], d
	jr .end
	
.end
; Replace Pokedex # with species
	ld a, [CurSpecies]
	ld [BaseDexNo], a
	
	pop af
	rst Bankswitch
	pop hl
	pop de
	pop bc
	ret
; 389c


GetCurNick: ; 389c
	ld a, [CurPartyMon]
	ld hl, PartyMonNicknames

GetNick: ; 38a2
; Get nickname a from list hl.

	push hl
	push bc

	call SkipNames
	ld de, StringBuffer1

	push de
	ld bc, PKMN_NAME_LENGTH
	call CopyBytes
	pop de

	callab CheckNickErrors

	pop bc
	pop hl
	ret
; 38bb


PrintBCDNumber: ; 38bb
; function to print a BCD (Binary-coded decimal) number
; de = address of BCD number
; hl = destination address
; c = flags and length
; bit 7: if set, do not print leading zeroes
;        if unset, print leading zeroes
; bit 6: if set, left-align the string (do not pad empty digits with spaces)
;        if unset, right-align the string
; bit 5: if set, print currency symbol at the beginning of the string
;        if unset, do not print the currency symbol
; bits 0-4: length of BCD number in bytes
; Note that bits 5 and 7 are modified during execution. The above reflects
; their meaning at the beginning of the functions's execution.
	ld b, c ; save flags in b
	res 7, c
	res 6, c
	res 5, c ; c now holds the length
	bit 5, b
	jr z, .loop
	bit 7, b
	jr nz, .loop
	ld [hl], "¥"
	inc hl
.loop
	ld a, [de]
	swap a
	call PrintBCDDigit ; print upper digit
	ld a, [de]
	call PrintBCDDigit ; print lower digit
	inc de
	dec c
	jr nz, .loop
	bit 7, b ; were any non-zero digits printed?
	jr z, .done ; if so, we are done
.numberEqualsZero ; if every digit of the BCD number is zero
	bit 6, b ; left or right alignment?
	jr nz, .skipRightAlignmentAdjustment
	dec hl ; if the string is right-aligned, it needs to be moved back one space
.skipRightAlignmentAdjustment
	bit 5, b
	jr z, .skipCurrencySymbol
	ld [hl], "¥" ; currency symbol
	inc hl
.skipCurrencySymbol
	ld [hl], "0"
	call PrintLetterDelay
	inc hl
.done
	ret
; 0x38f2

PrintBCDDigit: ; 38f2
	and a, %00001111
	and a
	jr z, .zeroDigit
.nonzeroDigit
	bit 7, b ; have any non-space characters been printed?
	jr z, .outputDigit
; if bit 7 is set, then no numbers have been printed yet
	bit 5, b ; print the currency symbol?
	jr z, .skipCurrencySymbol
	ld [hl], "¥"
	inc hl
	res 5, b
.skipCurrencySymbol
	res 7, b ; unset 7 to indicate that a nonzero digit has been reached
.outputDigit
	add a, "0"
	ld [hli], a
	jp PrintLetterDelay
.zeroDigit
	bit 7, b ; either printing leading zeroes or already reached a nonzero digit?
	jr z, .outputDigit ; if so, print a zero digit
	bit 6, b ; left or right alignment?
	ret nz
	ld a, " "
	ld [hli], a ; if right-aligned, "print" a space by advancing the pointer
	ret
; 0x3917

GetPartyParamLocation: ; 3917
; Get the location of parameter a from CurPartyMon in hl
	push bc
	ld hl, PartyMons
	ld c, a
	ld b, $00
	add hl, bc
	ld a, [CurPartyMon]
	call GetPartyLocation
	pop bc
	ret
; 3927

GetPartyLocation: ; 3927
; Add the length of a PartyMon struct to hl a times.
	ld bc, PartyMon2 - PartyMon1
	jp AddNTimes
; 392d


Function392d: ; 392d
	push hl
	ld a, b
	dec a
	ld b, $0
	add hl, bc
	ld hl, $5424
	ld bc, $0020
	call AddNTimes
	ld a, $14
	call GetFarHalfword
	ld b, l
	ld c, h
	pop hl
	ret
; 3945


UserPartyAttr: ; 3945
	push af
	ld a, [hBattleTurn]
	and a
	jr nz, .asm_394e
	pop af
	jr BattlePartyAttr
.asm_394e
	pop af
	jr OTPartyAttr
; 3951


OpponentPartyAttr: ; 3951
	push af
	ld a, [hBattleTurn]
	and a
	jr z, .asm_395a
	pop af
	jr BattlePartyAttr
.asm_395a
	pop af
	jr OTPartyAttr
; 395d


BattlePartyAttr: ; 395d
; Get attribute a from the active BattleMon's party struct.
	push bc
	ld c, a
	ld b, 0
	ld hl, PartyMons
	add hl, bc
	ld a, [CurBattleMon]
	call GetPartyLocation
	pop bc
	ret
; 396d


OTPartyAttr: ; 396d
; Get attribute a from the active EnemyMon's party struct.
	push bc
	ld c, a
	ld b, 0
	ld hl, OTPartyMon1Species
	add hl, bc
	ld a, [CurOTMon]
	call GetPartyLocation
	pop bc
	ret
; 397d


ResetDamage: ; 397d
	xor a
	ld [CurDamage], a
	ld [CurDamage + 1], a
	ret
; 3985

SetPlayerTurn: ; 3985
	xor a
	ld [hBattleTurn], a
	ret
; 3989

SetEnemyTurn: ; 3989
	ld a, 1
	ld [hBattleTurn], a
	ret
; 398e


UpdateOpponentInParty: ; 398e
	ld a, [hBattleTurn]
	and a
	jr z, UpdateEnemyMonInParty
	jr UpdateBattleMonInParty
; 3995

UpdateUserInParty: ; 3995
	ld a, [hBattleTurn]
	and a
	jr z, UpdateBattleMonInParty
	jr UpdateEnemyMonInParty
; 399c

UpdateBattleMonInParty: ; 399c
; Update level, status, current HP

	ld a, [CurBattleMon]

Function399f: ; 399f
	ld hl, PartyMon1Level
	call GetPartyLocation

	ld d, h
	ld e, l
	ld hl, BattleMonLevel
	ld bc, BattleMonMaxHP - BattleMonLevel
	jp CopyBytes
; 39b0

UpdateEnemyMonInParty: ; 39b0
; Update level, status, current HP

; No wildmons.
	ld a, [IsInBattle]
	dec a
	ret z

	ld a, [CurOTMon]
	ld hl, OTPartyMon1Level
	call GetPartyLocation

	ld d, h
	ld e, l
	ld hl, EnemyMonLevel
	ld bc, EnemyMonMaxHP - EnemyMonLevel
	jp CopyBytes
; 39c9


RefreshBattleHuds: ; 39c9
	call UpdateBattleHuds
	ld c, 3
	call DelayFrames
	jp WaitBGMap
; 39d4

UpdateBattleHuds: ; 39d4
	callba Function3df48
	callba Function3e036
	ret
; 39e1


GetBattleVar: ; 39e1
; Preserves hl.
	push hl
	call _GetBattleVar
	pop hl
	ret
; 39e7

_GetBattleVar: ; 39e7
; Get variable from pair a, depending on whose turn it is.
; There are 21 variable pairs.

	push bc

	ld hl, .battlevarpairs
	ld c, a
	ld b, 0
	add hl, bc
	add hl, bc

	ld a, [hli]
	ld h, [hl]
	ld l, a

; Enemy turn uses the second byte instead.
; This lets battle variable calls be side-neutral.
	ld a, [hBattleTurn]
	and a
	jr z, .getvar
	inc hl
	
.getvar
; var id
	ld a, [hl]
	ld c, a
	ld b, 0

	ld hl, .vars
	add hl, bc
	add hl, bc

	ld a, [hli]
	ld h, [hl]
	ld l, a
	
	ld a, [hl]
	
	pop bc
	ret


.battlevarpairs
	dw .substatus1, .substatus2, .substatus3, .substatus4, .substatus5
	dw .substatus1opp, .substatus2opp, .substatus3opp, .substatus4opp, .substatus5opp
	dw .status, .statusopp, .animation, .effect, .power, .type
	dw .curmove, .lastcounter, .lastcounteropp, .lastmove, .lastmoveopp


	const_def
	const PLAYER_SUBSTATUS_1
	const ENEMY_SUBSTATUS_1
	const PLAYER_SUBSTATUS_2
	const ENEMY_SUBSTATUS_2
	const PLAYER_SUBSTATUS_3
	const ENEMY_SUBSTATUS_3
	const PLAYER_SUBSTATUS_4
	const ENEMY_SUBSTATUS_4
	const PLAYER_SUBSTATUS_5
	const ENEMY_SUBSTATUS_5
	const PLAYER_STATUS
	const ENEMY_STATUS
	const PLAYER_MOVE_ANIMATION
	const ENEMY_MOVE_ANIMATION
	const PLAYER_MOVE_EFFECT
	const ENEMY_MOVE_EFFECT
	const PLAYER_MOVE_POWER
	const ENEMY_MOVE_POWER
	const PLAYER_MOVE_TYPE
	const ENEMY_MOVE_TYPE
	const PLAYER_CUR_MOVE
	const ENEMY_CUR_MOVE
	const PLAYER_COUNTER_MOVE
	const ENEMY_COUNTER_MOVE
	const PLAYER_LAST_MOVE
	const ENEMY_LAST_MOVE


;                       player                     enemy
.substatus1     db PLAYER_SUBSTATUS_1,    ENEMY_SUBSTATUS_1
.substatus1opp  db ENEMY_SUBSTATUS_1,     PLAYER_SUBSTATUS_1
.substatus2     db PLAYER_SUBSTATUS_2,    ENEMY_SUBSTATUS_2
.substatus2opp  db ENEMY_SUBSTATUS_2,     PLAYER_SUBSTATUS_2
.substatus3     db PLAYER_SUBSTATUS_3,    ENEMY_SUBSTATUS_3
.substatus3opp  db ENEMY_SUBSTATUS_3,     PLAYER_SUBSTATUS_3
.substatus4     db PLAYER_SUBSTATUS_4,    ENEMY_SUBSTATUS_4
.substatus4opp  db ENEMY_SUBSTATUS_4,     PLAYER_SUBSTATUS_4
.substatus5     db PLAYER_SUBSTATUS_5,    ENEMY_SUBSTATUS_5
.substatus5opp  db ENEMY_SUBSTATUS_5,     PLAYER_SUBSTATUS_5
.status         db PLAYER_STATUS,         ENEMY_STATUS
.statusopp      db ENEMY_STATUS,          PLAYER_STATUS
.animation      db PLAYER_MOVE_ANIMATION, ENEMY_MOVE_ANIMATION
.effect         db PLAYER_MOVE_EFFECT,    ENEMY_MOVE_EFFECT
.power          db PLAYER_MOVE_POWER,     ENEMY_MOVE_POWER
.type           db PLAYER_MOVE_TYPE,      ENEMY_MOVE_TYPE
.curmove        db PLAYER_CUR_MOVE,       ENEMY_CUR_MOVE
.lastcounter    db PLAYER_COUNTER_MOVE,   ENEMY_COUNTER_MOVE
.lastcounteropp db ENEMY_COUNTER_MOVE,    PLAYER_COUNTER_MOVE
.lastmove       db PLAYER_LAST_MOVE,      ENEMY_LAST_MOVE
.lastmoveopp    db ENEMY_LAST_MOVE,       PLAYER_LAST_MOVE

.vars
	dw PlayerSubStatus1,     EnemySubStatus1
	dw PlayerSubStatus2,     EnemySubStatus2
	dw PlayerSubStatus3,     EnemySubStatus3
	dw PlayerSubStatus4,     EnemySubStatus4
	dw PlayerSubStatus5,     EnemySubStatus5
	dw BattleMonStatus,      EnemyMonStatus
	dw PlayerMoveAnimation,  EnemyMoveAnimation
	dw PlayerMoveEffect,     EnemyMoveEffect
	dw PlayerMovePower,      EnemyMovePower
	dw PlayerMoveType,       EnemyMoveType
	dw CurPlayerMove,        CurEnemyMove
	dw LastEnemyCounterMove, LastPlayerCounterMove
	dw LastPlayerMove,       LastEnemyMove
; 3a90


Function3a90: ; 3a90
	inc hl
	ld a, [hROMBank]
	push af
	ld a, [hli]
	ld e, a
	ld a, [hli]
	ld d, a
	ld a, [hli]
	ld [hROMBank], a
	ld [MBC3RomBank], a
	ld a, e
	ld l, a
	ld a, d
	ld h, a
	ld de, $d00c
	ld bc, $0028
	call CopyBytes
	pop af
	ld [hROMBank], a
	ld [MBC3RomBank], a
	ret
; 3ab2


MobileTextBorder: ; 3ab2
; For mobile link battles only.
	ld a, [InLinkBattle]
	cp 4
	ret c
; Draw a cell phone icon at the top right corner of the border.
	ld hl, $c5a3 ; TileMap(19,12)
	ld [hl], $5e ; cell phone top
	ld hl, $c5b7 ; TileMap(19,13)
	ld [hl], $5f ; cell phone bottom
	ret
; 3ac3


BattleTextBox: ; 3ac3
; Open a textbox and print text at hl.
	push hl
	call SpeechTextBox
	call MobileTextBorder
	call Function1ad2
	call Function321c
	pop hl
	call PrintTextBoxText
	ret
; 3ad5


StdBattleTextBox: ; 3ad5
; Open a textbox and print battle text at 20:hl.

	ld a, [hROMBank]
	push af

	ld a, BANK(BattleText)
	rst Bankswitch

	call BattleTextBox

	pop af
	rst Bankswitch
	ret
; 3ae1


Function3ae1: ; 3ae1
	ld a, $32
	rst Bankswitch

	ld a, [hli]
	ld [$d410], a
	ld a, [hl]
	ld [$d411], a
	ld a, $33
	rst Bankswitch

	ret
; 3af0

GetBattleAnimByte: ; 3af0
	push hl
	push de
	ld hl, $d410
	ld e, [hl]
	inc hl
	ld d, [hl]
	ld a, $32
	rst Bankswitch

	ld a, [de]
	ld [$d417], a
	inc de
	ld a, $33
	rst Bankswitch

	ld [hl], d
	dec hl
	ld [hl], e
	pop de
	pop hl
	ld a, [$d417]
	ret
; 3b0c

Function3b0c: ; 3b0c
	ld a, [hLCDStatCustom]
	and a
	ret z

	ld a, $00
	ld [Requested2bppSource], a
	ld a, $d2
	ld [Requested2bppSource + 1], a

	ld a, $00
	ld [Requested2bppDest], a
	ld a, $d1
	ld [Requested2bppDest + 1], a

	ld a, $9
	ld [Requested2bpp], a
	ret
; 3b2a



Function3b2a: ; 3b2a
	ld [$c3b8], a
	ld a, [hROMBank]
	push af
	ld a, BANK(Function8cfd6)
	rst Bankswitch

	ld a, [$c3b8]
	call Function8cfd6
	pop af
	rst Bankswitch

	ret
; 3b3c


Function3b3c: ; 3b3c
	ld [$c3b8], a
	ld a, [hROMBank]
	push af
	ld a, BANK(Function8d120)
	rst Bankswitch

	ld a, [$c3b8]
	call Function8d120
	pop af
	rst Bankswitch

	ret
; 3b4e


SoundRestart: ; 3b4e

	push hl
	push de
	push bc
	push af

	ld a, [hROMBank]
	push af
	ld a, BANK(_SoundRestart)
	ld [hROMBank], a
	ld [MBC3RomBank], a

	call _SoundRestart

	pop af
	ld [hROMBank], a
	ld [MBC3RomBank], a

	pop af
	pop bc
	pop de
	pop hl
	ret
; 3b6a


UpdateSound: ; 3b6a

	push hl
	push de
	push bc
	push af

	ld a, [hROMBank]
	push af
	ld a, BANK(_UpdateSound)
	ld [hROMBank], a
	ld [MBC3RomBank], a

	call _UpdateSound

	pop af
	ld [hROMBank], a
	ld [MBC3RomBank], a

	pop af
	pop bc
	pop de
	pop hl
	ret
; 3b86


_LoadMusicByte: ; 3b86
; CurMusicByte = [a:de]

	ld [hROMBank], a
	ld [MBC3RomBank], a

	ld a, [de]
	ld [CurMusicByte], a
	ld a, BANK(LoadMusicByte)

	ld [hROMBank], a
	ld [MBC3RomBank], a
	ret
; 3b97


PlayMusic: ; 3b97
; Play music de.

	push hl
	push de
	push bc
	push af

	ld a, [hROMBank]
	push af
	ld a, BANK(_PlayMusic) ; and BANK(_SoundRestart)
	ld [hROMBank], a
	ld [MBC3RomBank], a

	ld a, e
	and a
	jr z, .nomusic

	call _PlayMusic
	jr .end

.nomusic
	call _SoundRestart

.end
	pop af
	ld [hROMBank], a
	ld [MBC3RomBank], a
	pop af
	pop bc
	pop de
	pop hl
	ret
; 3bbc


PlayMusic2: ; 3bbc
; Stop playing music, then play music de.

	push hl
	push de
	push bc
	push af

	ld a, [hROMBank]
	push af
	ld a, BANK(_PlayMusic)
	ld [hROMBank], a
	ld [MBC3RomBank], a

	push de
	ld de, MUSIC_NONE
	call _PlayMusic
	call DelayFrame
	pop de
	call _PlayMusic

	pop af
	ld [hROMBank], a
	ld [MBC3RomBank], a

	pop af
	pop bc
	pop de
	pop hl
	ret

; 3be3


PlayCryHeader: ; 3be3
; Play a cry given parameters in header de

	push hl
	push de
	push bc
	push af

; Save current bank
	ld a, [hROMBank]
	push af

; Cry headers are stuck in one bank.
	ld a, BANK(CryHeaders)
	ld [hROMBank], a
	ld [MBC3RomBank], a

; Each header is 6 bytes long:
	ld hl, CryHeaders
	add hl, de
	add hl, de
	add hl, de
	add hl, de
	add hl, de
	add hl, de

	ld e, [hl]
	inc hl
	ld d, [hl]
	inc hl

	ld a, [hli]
	ld [CryPitch], a
	ld a, [hli]
	ld [CryEcho], a
	ld a, [hli]
	ld [CryLength], a
	ld a, [hl]
	ld [CryLength+1], a

	ld a, BANK(PlayCry)
	ld [hROMBank], a
	ld [MBC3RomBank], a

	call PlayCry

	pop af
	ld [hROMBank], a
	ld [MBC3RomBank], a
	
	pop af
	pop bc
	pop de
	pop hl
	ret
; 3c23


PlaySFX: ; 3c23
; Play sound effect de.
; Sound effects are ordered by priority (lowest to highest)

	push hl
	push de
	push bc
	push af

; Is something already playing?
	call CheckSFX
	jr nc, .play
; Does it have priority?
	ld a, [CurSFX]
	cp e
	jr c, .quit

.play
	ld a, [hROMBank]
	push af
	ld a, BANK(_PlaySFX)
	ld [hROMBank], a
	ld [MBC3RomBank], a ; bankswitch

	ld a, e
	ld [CurSFX], a
	call _PlaySFX

	pop af
	ld [hROMBank], a
	ld [MBC3RomBank], a ; bankswitch
.quit
	pop af
	pop bc
	pop de
	pop hl
	ret
; 3c4e


WaitPlaySFX: ; 3c4e
	call WaitSFX
	call PlaySFX
	ret
; 3c55


WaitSFX: ; 3c55
; infinite loop until sfx is done playing

	push hl
	
.loop
	; ch5 on?
	ld hl, Channel5 + Channel1Flags - Channel1
	bit 0, [hl]
	jr nz, .loop
	; ch6 on?
	ld hl, Channel6 + Channel1Flags - Channel1
	bit 0, [hl]
	jr nz, .loop
	; ch7 on?
	ld hl, Channel7 + Channel1Flags - Channel1
	bit 0, [hl]
	jr nz, .loop
	; ch8 on?
	ld hl, Channel8 + Channel1Flags - Channel1
	bit 0, [hl]
	jr nz, .loop
	
	pop hl
	ret
; 3c74

Function3c74: ; 3c74
	push hl
	ld hl, $c1cc
	bit 0, [hl]
	jr nz, .asm_3c94
	ld hl, $c1fe
	bit 0, [hl]
	jr nz, .asm_3c94
	ld hl, $c230
	bit 0, [hl]
	jr nz, .asm_3c94
	ld hl, $c262
	bit 0, [hl]
	jr nz, .asm_3c94
	pop hl
	scf
	ret

.asm_3c94
	pop hl
	and a
	ret
; 3c97

MaxVolume: ; 3c97
	ld a, $77 ; max
	ld [Volume], a
	ret
; 3c9d

LowVolume: ; 3c9d
	ld a, $33 ; 40%
	ld [Volume], a
	ret
; 3ca3

VolumeOff: ; 3ca3
	xor a
	ld [Volume], a
	ret
; 3ca8

Function3ca8: ; 3ca8
	ld a, $4
	ld [MusicFade], a
	ret
; 3cae

Function3cae: ; 3cae
	ld a, $84
	ld [MusicFade], a
	ret
; 3cb4

Function3cb4: ; 3cb4
.asm_3cb4
	and a
	ret z
	dec a
	call UpdateSound
	jr .asm_3cb4
; 3cbc

Function3cbc: ; 3cbc
	push hl
	push de
	push bc
	push af
	call Function3d97
	ld a, [CurMusic]
	cp e
	jr z, .asm_3cda
	ld a, $8
	ld [MusicFade], a
	ld a, e
	ld [MusicFadeIDLo], a
	ld a, d
	ld [MusicFadeIDHi], a
	ld a, e
	ld [CurMusic], a

.asm_3cda
	pop af
	pop bc
	pop de
	pop hl
	ret
; 3cdf

Function3cdf: ; 3cdf
	push hl
	push de
	push bc
	push af
	call Function3d97
	ld a, [CurMusic]
	cp e
	jr z, .asm_3cfe
	push de
	ld de, MUSIC_NONE
	call PlayMusic
	call DelayFrame
	pop de
	ld a, e
	ld [CurMusic], a
	call PlayMusic

.asm_3cfe
	pop af
	pop bc
	pop de
	pop hl
	ret
; 3d03

Function3d03: ; 3d03
	push hl
	push de
	push bc
	push af
	xor a
	ld [$c2c1], a
	ld de, MUSIC_BICYCLE
	ld a, [PlayerState]
	cp $1
	jr z, .asm_3d18
	call Function3d97
.asm_3d18
	push de
	ld de, MUSIC_NONE
	call PlayMusic
	call DelayFrame
	pop de
	ld a, e
	ld [CurMusic], a
	call PlayMusic
	pop af
	pop bc
	pop de
	pop hl
	ret
; 3d2f

Function3d2f: ; 3d2f
	ld a, [$c2c1]
	and a
	jr z, Function3d47
	xor a
	ld [CurMusic], a
	ld de, MUSIC_NONE
	call PlayMusic
	call DelayFrame
	xor a
	ld [$c2c1], a
	ret
; 3d47

Function3d47: ; 3d47
	push hl
	push de
	push bc
	push af
	ld de, MUSIC_NONE
	call PlayMusic
	call DelayFrame
	ld a, [CurMusic]
	ld e, a
	ld d, 0
	call PlayMusic
	pop af
	pop bc
	pop de
	pop hl
	ret
; 3d62

Function3d62: ; 3d62
	ld a, [PlayerState]
	cp $4
	jr z, .asm_3d7b
	cp $8
	jr z, .asm_3d7b
	ld a, [StatusFlags2]
	bit 2, a
	jr nz, .asm_3d80
.asm_3d74
	and a
	ret

	ld de, $0013
	scf
	ret

.asm_3d7b
	ld de, $0021
	scf
	ret

.asm_3d80
	ld a, [MapGroup]
	cp $a
	jr nz, .asm_3d74
	ld a, [MapNumber]
	cp $f
	jr z, .asm_3d92
	cp $11
	jr nz, .asm_3d74

.asm_3d92
	ld de, $0058
	scf
	ret
; 3d97

Function3d97: ; 3d97
	call Function3d62
	ret c
	call Function2cbd
	ret
; 3d9f

Function3d9f: ; 3d9f
	ld a, $20
	ld [$c498], a
	ld [$c49c], a
	ld a, $50
	ld [$c499], a
	ld a, $58
	ld [$c49d], a
	xor a
	ld [$c49b], a
	ld [$c49f], a
	ld a, [$c296]
	cp $64
	jr nc, .asm_3dd5
	add $1
	daa
	ld b, a
	swap a
	and $f
	add $f6
	ld [$c49a], a
	ld a, b
	and $f
	add $f6
	ld [$c49e], a
	ret

.asm_3dd5
	ld a, $ff
	ld [$c49a], a
	ld [$c49e], a
	ret
; 3dde

CheckSFX: ; 3dde
; returns carry if sfx channels are active
	ld a, [$c1cc] ; 1
	bit 0, a
	jr nz, .quit
	ld a, [$c1fe] ; 2
	bit 0, a
	jr nz, .quit
	ld a, [$c230] ; 3
	bit 0, a
	jr nz, .quit
	ld a, [$c262] ; 4
	bit 0, a
	jr nz, .quit
	and a
	ret
.quit
	scf
	ret
; 3dfe

Function3dfe: ; 3dfe
	xor a
	ld [$c1cc], a
	ld [SoundInput], a
	ld [rNR10], a
	ld [rNR11], a
	ld [rNR12], a
	ld [rNR13], a
	ld [rNR14], a
	ret
; 3e10


ChannelsOff: ; 3e10
; Quickly turn off music channels
	xor a
	ld [Channel1Flags], a
	ld [$c136], a
	ld [$c168], a
	ld [$c19a], a
	ld [SoundInput], a
	ret
; 3e21

SFXChannelsOff: ; 3e21
; Quickly turn off sound effect channels
	xor a
	ld [$c1cc], a
	ld [$c1fe], a
	ld [$c230], a
	ld [$c262], a
	ld [SoundInput], a
	ret
; 3e32

Function3e32: ; 3e32
	cp $2
	ld [$c988], a
	ld a, l
	ld [$c986], a
	ld a, h
	ld [$c987], a
	jr nz, .asm_3e4f
	ld [$c982], a
	ld a, l
	ld [$c981], a
	ld hl, $c983
	ld a, c
	ld [hli], a
	ld a, b
	ld [hl], a

.asm_3e4f
	ld hl, $c822
	set 6, [hl]
	ld a, [hROMBank]
	push af
	ld a, BANK(Function110030)
	ld [$c981], a
	rst Bankswitch

	jp Function110030
; 3e60


Function3e60: ; 3e60
	ld [$c986], a
	ld a, l
	ld [$c987], a
	ld a, h
	ld [$c988], a
	pop bc
	ld a, b
	ld [$c981], a
	rst Bankswitch

	ld hl, $c822
	res 6, [hl]
	ld hl, $c987
	ld a, [hli]
	ld h, [hl]
	ld l, a
	ld a, [$c986]
	ret
; 3e80


Function3e80: ; 3e80
	ld a, [hROMBank]
	push af
	ld a, BANK(Function1116c5)
	ld [$c981], a
	rst Bankswitch

	call Function1116c5
	pop bc
	ld a, b
	ld [$c981], a
	rst Bankswitch

	ret
; 3e93


Timer: ; 3e93
	push af
	push bc
	push de
	push hl

	ld a, [$ffe9]
	and a
	jr z, .asm_3ed2

	xor a
	ld [rTAC], a

; Turn off timer interrupt
	ld a, [rIF]
	and 1 << VBLANK | 1 << LCD_STAT | 1 << SERIAL | 1 << JOYPAD
	ld [rIF], a

	ld a, [$c86a]
	or a
	jr z, .asm_3ed2

	ld a, [$c822]
	bit 1, a
	jr nz, .asm_3eca

	ld a, [rSC]
	and 1 << rSC_ON
	jr nz, .asm_3eca

	ld a, [hROMBank]
	push af
	ld a, BANK(Function1118de)
	ld [$c981], a
	rst Bankswitch

	call Function1118de

	pop bc
	ld a, b
	ld [$c981], a
	rst Bankswitch

.asm_3eca
	ld a, [rTMA]
	ld [rTIMA], a

	ld a, 1 << rTAC_ON | rTAC_65536_HZ
	ld [rTAC], a

.asm_3ed2
	pop hl
	pop de
	pop bc
	pop af
	reti
; 3ed7

Function3ed7: ; 3ed7
	ld [$dc02], a
	ld a, [hROMBank]
	push af
	ld a, BANK(Function114243)
	rst Bankswitch

	call Function114243
	pop bc
	ld a, b
	rst Bankswitch

	ld a, [$dc02]
	ret
; 3eea

Function3eea: ; 3eea
	push hl
	push bc
	ld de, $0939
	add hl, de
	inc b
	inc b
	inc c
	inc c
	call Function3f35
	pop bc
	pop hl
	call Function3f47
	ret
; 3efd

Function3efd: ; 3efd
	push hl
	ld hl, $c590
	ld b, $4
	ld c, $12
	call Function3f0d
	pop hl
	call PrintTextBoxText
	ret
; 3f0d

Function3f0d: ; 3f0d
	push hl
	push bc
	ld de, $0939
	add hl, de
	inc b
	inc b
	inc c
	inc c
	call Function3f35
	pop bc
	pop hl
	call TextBoxBorder
	ret
; 3f20

Function3f20: ; 3f20
	ld hl, AttrMap
	ld b, $6
	ld c, $14
	call Function3f35
	ld hl, TileMap
	ld b, $4
	ld c, $12
	call Function3f47
	ret
; 3f35

Function3f35: ; 3f35
	ld a, $6
	ld de, $0014
.asm_3f3a
	push bc
	push hl
.asm_3f3c
	ld [hli], a
	dec c
	jr nz, .asm_3f3c
	pop hl
	add hl, de
	pop bc
	dec b
	jr nz, .asm_3f3a
	ret
; 3f47

Function3f47: ; 3f47
	push bc
	call Function3f58
	pop bc
.asm_3f4c
	push bc
	call Function3f68
	pop bc
	dec b
	jr nz, .asm_3f4c
	call Function3f60
	ret
; 3f58

Function3f58: ; 3f58
	ld a, $63
	ld d, $62
	ld e, $64
	jr Function3f6e

Function3f60: ; 3f60
	ld a, $68
	ld d, $67
	ld e, $69
	jr Function3f6e

Function3f68: ; 3f68
	ld a, $7f
	ld d, $65
	ld e, $66

Function3f6e: ; 3f6e
	push hl
	ld [hl], d
	inc hl
.asm_3f71
	ld [hli], a
	dec c
	jr nz, .asm_3f71
	ld [hl], e
	pop hl
	ld de, $0014
	add hl, de
	ret
; 3f7c

Function3f7c: ; 3f7c
	call Function1cfd
	call Function1c53
	dec b
	dec c
	call Function3eea
	ret
; 3f88

Function3f88: ; 3f88
	ld hl, $d000
	ld b, $0
.asm_3f8d
	push bc
	ld c, $8
.asm_3f90
	ld a, [de]
	inc de
	cpl
	ld [hl], $0
	inc hl
	ld [hli], a
	dec c
	jr nz, .asm_3f90
	pop bc
	dec c
	jr nz, .asm_3f8d
	ret
; 3f9f

Function3f9f: ; 3f9f
	ld hl, $d000
.asm_3fa2
	push bc
	ld c, $8
.asm_3fa5
	ld a, [de]
	inc de
	inc de
	cpl
	ld [hl], $0
	inc hl
	ld [hli], a
	dec c
	jr nz, .asm_3fa5
	pop bc
	dec c
	jr nz, .asm_3fa2
	ret
; 3fb5