pokecrystal-board/engine/pokemon/search.asm

273 lines
4.0 KiB
NASM

BeastsCheck:
; Check if the player owns all three legendary beasts.
; They must exist in either party or PC, and have the player's OT and ID.
; Return the result in wScriptVar.
ld a, RAIKOU
ld [wScriptVar], a
call CheckOwnMonAnywhere
jr nc, .notexist
ld a, ENTEI
ld [wScriptVar], a
call CheckOwnMonAnywhere
jr nc, .notexist
ld a, SUICUNE
ld [wScriptVar], a
call CheckOwnMonAnywhere
jr nc, .notexist
; they exist
ld a, 1
ld [wScriptVar], a
ret
.notexist
xor a
ld [wScriptVar], a
ret
MonCheck:
; Check if the player owns any Pokémon of the species in wScriptVar.
; Return the result in wScriptVar.
call CheckOwnMonAnywhere
jr c, .exists
; doesn't exist
xor a
ld [wScriptVar], a
ret
.exists
ld a, 1
ld [wScriptVar], a
ret
CheckOwnMonAnywhere:
; Check if the player owns any monsters of the species in wScriptVar.
; It must exist in either party or PC, and have the player's OT and ID.
; If there are no monsters in the party,
; the player must not own any yet.
ld a, [wPartyCount]
and a
ret z
ld d, a
ld e, 0
ld hl, wPartyMon1Species
ld bc, wPartyMonOTs
; Run CheckOwnMon on each Pokémon in the party.
.partymon
call CheckOwnMon
ret c ; found!
push bc
ld bc, PARTYMON_STRUCT_LENGTH
add hl, bc
pop bc
call UpdateOTPointer
dec d
jr nz, .partymon
; Run CheckOwnMon on each Pokémon in the PC.
ld a, BANK(sBoxCount)
call OpenSRAM
ld a, [sBoxCount]
and a
jr z, .boxes
ld d, a
ld hl, sBoxMon1Species
ld bc, sBoxMonOTs
.openboxmon
call CheckOwnMon
jr nc, .loop
; found!
call CloseSRAM
ret
.loop
push bc
ld bc, BOXMON_STRUCT_LENGTH
add hl, bc
pop bc
call UpdateOTPointer
dec d
jr nz, .openboxmon
; Run CheckOwnMon on each monster in the other 13 PC boxes.
.boxes
call CloseSRAM
ld c, 0
.box
; Don't search the current box again.
ld a, [wCurBox]
and $f
cp c
jr z, .loopbox
; Load the box.
ld hl, SearchBoxAddressTable
ld b, 0
add hl, bc
add hl, bc
add hl, bc
ld a, [hli]
call OpenSRAM
ld a, [hli]
ld h, [hl]
ld l, a
; Number of monsters in the box
ld a, [hl]
and a
jr z, .loopbox
push bc
push hl
ld de, sBoxMons - sBoxCount
add hl, de
ld d, h
ld e, l
pop hl
push de
ld de, sBoxMonOTs - sBoxCount
add hl, de
ld b, h
ld c, l
pop hl
ld d, a
.boxmon
call CheckOwnMon
jr nc, .loopboxmon
; found!
pop bc
call CloseSRAM
ret
.loopboxmon
push bc
ld bc, BOXMON_STRUCT_LENGTH
add hl, bc
pop bc
call UpdateOTPointer
dec d
jr nz, .boxmon
pop bc
.loopbox
inc c
ld a, c
cp NUM_BOXES
jr c, .box
; not found
call CloseSRAM
and a
ret
CheckOwnMon:
; Check if a Pokémon belongs to the player and is of a specific species.
; inputs:
; hl, pointer to PartyMonNSpecies
; bc, pointer to PartyMonNOT
; wScriptVar should contain the species we're looking for
; outputs:
; sets carry if monster matches species, ID, and OT name.
push bc
push hl
push de
ld d, b
ld e, c
; check species
ld a, [wScriptVar] ; species we're looking for
ld b, [hl] ; species we have
cp b
jr nz, .notfound ; species doesn't match
; check ID number
ld bc, MON_ID
add hl, bc ; now hl points to ID number
ld a, [wPlayerID]
cp [hl]
jr nz, .notfound ; ID doesn't match
inc hl
ld a, [wPlayerID + 1]
cp [hl]
jr nz, .notfound ; ID doesn't match
; check OT
; This only checks five characters, which is fine for the Japanese version,
; but in the English version the player name is 7 characters, so this is wrong.
ld hl, wPlayerName
rept NAME_LENGTH_JAPANESE - 2 ; should be PLAYER_NAME_LENGTH - 2
ld a, [de]
cp [hl]
jr nz, .notfound
cp "@"
jr z, .found ; reached end of string
inc hl
inc de
endr
ld a, [de]
cp [hl]
jr z, .found
.notfound
pop de
pop hl
pop bc
and a
ret
.found
pop de
pop hl
pop bc
scf
ret
SearchBoxAddressTable:
table_width 3, SearchBoxAddressTable
dba sBox1
dba sBox2
dba sBox3
dba sBox4
dba sBox5
dba sBox6
dba sBox7
dba sBox8
dba sBox9
dba sBox10
dba sBox11
dba sBox12
dba sBox13
dba sBox14
assert_table_length NUM_BOXES
UpdateOTPointer:
push hl
ld hl, NAME_LENGTH
add hl, bc
ld b, h
ld c, l
pop hl
ret