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https://gitlab.com/xCrystal/pokecrystal-board.git
synced 2024-11-16 11:27:33 -08:00
Add the Ho-oh chamber special, along with some helper functions.
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IIMarckus
parent
fa019d2f51
commit
d23f14000b
206
main.asm
206
main.asm
@ -162,7 +162,163 @@ UnknownScript_0x26ef: ; 0x26ef
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jumptextfaceplayer $26f2
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; 0x26f2
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INCBIN "baserom.gbc",$26f2,$2fcb-$26f2
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INCBIN "baserom.gbc",$26f2,$2bed-$26f2
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GetMapHeaderPointer: ; 0x2bed
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; Prior to calling this function, you must have switched banks so that
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; MapHeaderPointers is visible.
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; inputs:
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; b = map group, c = map number
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; XXX de = ???
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; outputs:
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; hl points to the map header
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push bc ; save map number for later
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; get pointer to map group
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dec b
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ld c, b
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ld b, $0
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ld hl, MapHeaderPointers
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add hl, bc
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add hl, bc
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ld a, [hli]
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ld h, [hl]
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ld l, a
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pop bc ; restore map number
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; find the cth map header
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dec c
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ld b, $0
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ld a, OlivineGym_MapHeader - MapHeader_0x94034
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call AddNTimes
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ret
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GetMapHeaderMember: ; 0x2c04
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; Extract a pointer from the current map's header.
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; inputs:
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; de = offset of desired pointer within the mapheader
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; outputs:
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; bc = pointer from the current map's
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; (e.g., de = $0003 would return a pointer to the secondary map header)
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ld a, [MapGroup]
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ld b, a
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ld a, [MapNumber]
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ld c, a
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; bankswitch
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ld a, [$ff00+$9d]
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push af
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ld a, BANK(MapHeaderPointers)
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rst $10
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call GetMapHeaderPointer
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add hl, de
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ld c, [hl]
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inc hl
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ld b, [hl]
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; bankswitch back
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pop af
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rst $10
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ret
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; 0x2c1c
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INCBIN "baserom.gbc",$2c1c,$2c7d-$2c1c
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GetSecondaryMapHeaderPointer: ; 0x2c7d
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; returns the current map's secondary map header pointer in hl.
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push bc
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push de
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ld de, $0003 ; secondary map header pointer (offset within header)
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call GetMapHeaderMember
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ld l, c
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ld h, b
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pop de
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pop bc
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ret
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INCBIN "baserom.gbc",$2c8a,$2e6f-$2c8a
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BitTable1Func: ; 0x2e6f
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ld hl, $da72
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call BitTableFunc
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ret
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BitTableFunc: ; 0x2e76
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; Perform a function on a bit in memory.
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; inputs:
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; b: function
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; 0 clear bit
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; 1 set bit
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; 2 check bit
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; de: bit number
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; hl: index within bit table
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; get index within the byte
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ld a, e
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and $7
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; shift de right by three bits (get the index within memory)
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srl d
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rr e
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srl d
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rr e
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srl d
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rr e
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add hl, de
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; implement a decoder
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ld c, $1
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rrca
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jr nc, .one
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rlc c
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.one
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rrca
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jr nc, .two
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rlc c
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rlc c
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.two
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rrca
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jr nc, .three
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swap c
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.three
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; check b's value: 0, 1, 2
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ld a, b
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cp 1
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jr c, .clearbit ; 0
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jr z, .setbit ; 1
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; check bit
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ld a, [hl]
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and c
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ld c, a
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ret
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.setbit
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; set bit
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ld a, [hl]
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or c
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ld [hl], a
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ret
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.clearbit
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; clear bit
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ld a, c
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cpl
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and [hl]
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ld [hl], a
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ret
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; 0x2ead
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INCBIN "baserom.gbc",$2ead,$2fcb-$2ead
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Function2fcb: ; 0x2fcb
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cp $4
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@ -699,7 +855,7 @@ SpecialsPointers: ; 0xc029
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dbw $5f,$52ce
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dbw $5f,$753d
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dbw $40,$7612
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dbw $22,$6ddb
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dbw BANK(SpecialHoOhChamber),SpecialHoOhChamber
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dbw $40,$6142
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dbw $12,$589a
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dbw $12,$5bf9
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@ -49205,7 +49361,22 @@ ClearScreenArea: ; 0x896ff
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ret
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; 0x8971f
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INCBIN "baserom.gbc",$8971f,$8b170 - $8971f
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INCBIN "baserom.gbc",$8971f,$8addb - $8971f
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SpecialHoOhChamber: ; 0x8addb
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ld hl, PartySpecies
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ld a, [hl]
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cp HO_OH ; is Ho-oh the first Pokémon in the party?
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jr nz, .done ; if not, we're done
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call GetSecondaryMapHeaderPointer
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ld de, $0326
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ld b, $1
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call BitTable1Func
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.done
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ret
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; 0x8adef
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INCBIN "baserom.gbc",$8adef,$8b170 - $8adef
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SpecialDratini: ; 0x8b170
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; if $c2dd is 0 or 1, change the moveset of the last Dratini in the party.
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@ -49330,7 +49501,34 @@ INCBIN "baserom.gbc",$90000,$4000
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SECTION "bank25",DATA,BANK[$25]
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INCBIN "baserom.gbc",$94000,$94034 - $94000
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MapHeaderPointers: ; 0x94000
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; pointers to the first map header of each map group
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dw MapHeader_0x94034
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dw MahoganyRedGyaradosSpeechHouse_MapHeader
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dw SproutTower1F_MapHeader
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dw EcruteakHouse_MapHeader
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dw BlackthornGym1F_MapHeader
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dw CinnabarPokeCenter1F_MapHeader
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dw CeruleanGymBadgeSpeechHouse_MapHeader
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dw AzaleaPokeCenter1F_MapHeader
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dw LakeofRageHiddenPowerHouse_MapHeader
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dw Route32_MapHeader
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dw Route34_MapHeader
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dw Route6_MapHeader
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dw Route1_MapHeader
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dw Route3_MapHeader
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dw OlivinePort_MapHeader
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dw Route23_MapHeader
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dw Route13_MapHeader
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dw Route8_MapHeader
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dw Route28_MapHeader
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dw PokeCenter2F_MapHeader
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dw Route7_MapHeader
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dw Route40_MapHeader
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dw Route2_MapHeader
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dw Route26_MapHeader
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dw Route5_MapHeader
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dw Route30_MapHeader
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MapHeader_0x94034: ; 0x94034
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; bank, tileset, permission
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