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https://gitlab.com/xCrystal/pokecrystal-board.git
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446f1846b1
Source: https://projectpokemon.org/home/forums/topic/43930-mystery-gift-reverse-engineering-of-ir-protocol/
151 lines
2.4 KiB
NASM
151 lines
2.4 KiB
NASM
StageDataForMysteryGift:
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ld de, wMysteryGiftStaging
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ld a, GS_VERSION + 1
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ld [de], a
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inc de ; wMysteryGiftStaging+1
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ld a, BANK(sGameData)
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call OpenSRAM
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ld hl, sPlayerData + wPlayerID - wPlayerData
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ld a, [hli]
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ld [de], a
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ld b, a
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inc de ; wMysteryGiftStaging+2
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ld a, [hl]
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ld [de], a
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ld c, a
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inc de ; wMysteryGiftStaging+3
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push bc
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ld hl, sPlayerData + wPlayerName - wPlayerData
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ld bc, NAME_LENGTH
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call CopyBytes
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push de ; wMysteryGiftStaging+14
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ld hl, sPokemonData + wPokedexCaught - wPokemonData
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ld b, wEndPokedexCaught - wPokedexCaught
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call CountSetBits
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pop de
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pop bc
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ld a, [wNumSetBits]
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ld [de], a
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inc de ; wMysteryGiftStaging+15
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call CloseSRAM
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call Random
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and 1
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ld [de], a
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inc de ; wMysteryGiftStaging+16
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call .RandomSample
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ld [de], a
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inc de ; wMysteryGiftStaging+17
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ld a, c
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ld c, b
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ld b, a
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call .RandomSample
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ld [de], a
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inc de ; wMysteryGiftStaging+18
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ld a, BANK(sBackupMysteryGiftItem)
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call OpenSRAM
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ld a, [sBackupMysteryGiftItem]
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ld [de], a
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inc de
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ld a, [sNumDailyMysteryGiftPartnerIDs]
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ld [de], a
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ld a, wMysteryGiftPlayerDataEnd - wMysteryGiftPlayerData
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ld [wUnusedMysteryGiftStagedDataLength], a
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call CloseSRAM
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ld hl, wMysteryGiftStaging
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ld de, wMysteryGiftPlayerData
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ld bc, wMysteryGiftPlayerDataEnd - wMysteryGiftPlayerData
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jp CopyBytes
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.RandomSample:
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push de
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call Random
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cp 10 percent
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jr c, .tenpercent
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call Random
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and %111
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ld d, a
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rl d
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ld e, $80
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.loop
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rlc e
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dec a
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jr nz, .loop
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ld a, e
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and c
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jr z, .skip
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ld a, $1
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.skip
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add d
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jr .done
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.tenpercent
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call Random
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cp 20 percent - 1
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jr c, .twopercent
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call Random
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and %011
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ld d, a
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rl d
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ld e, $80
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.loop2
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rlc e
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dec a
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jr nz, .loop2
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ld a, e
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and b
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jr z, .skip2
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ld a, $1
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.skip2
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add d
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add $10
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jr .done
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.twopercent
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call Random
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cp 20 percent - 1
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jr c, .pointfourpercent
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ld a, b
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swap a
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and $7
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add $18
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jr .done
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.pointfourpercent
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ld a, b
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and $80
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ld a, $20
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jr z, .done
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ld a, $21
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.done
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pop de
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ret
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MysteryGiftGetItem:
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ld a, c
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cp MysteryGiftItems.End - MysteryGiftItems
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jr nc, MysteryGiftFallbackItem
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ld hl, MysteryGiftItems
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ld b, 0
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add hl, bc
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ld c, [hl]
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ret
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MysteryGiftGetDecoration:
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ld a, c
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cp MysteryGiftDecos.End - MysteryGiftDecos
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jr nc, MysteryGiftFallbackItem
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ld hl, MysteryGiftDecos
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ld b, 0
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add hl, bc
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ld c, [hl]
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ret
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MysteryGiftFallbackItem:
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ld c, DECO_POLKADOT_BED ; GREAT_BALL
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ret
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INCLUDE "data/items/mystery_gift_items.asm"
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INCLUDE "data/decorations/mystery_gift_decos.asm"
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