mirror of
https://github.com/thornAvery/kep-hack.git
synced 2025-09-16 18:30:50 +12:00
88 lines
1.6 KiB
NASM
88 lines
1.6 KiB
NASM
AnimateBoulderDust:
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ld a, $1
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ld [wWhichAnimationOffsets], a ; select the boulder dust offsets
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ld a, [wUpdateSpritesEnabled]
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push af
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ld a, $ff
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ld [wUpdateSpritesEnabled], a
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ld a, %11100100
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ldh [rOBP1], a
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call LoadSmokeTileFourTimes
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farcall WriteCutOrBoulderDustAnimationOAMBlock
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ld c, 8 ; number of steps in animation
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.loop
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push bc
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call GetMoveBoulderDustFunctionPointer
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ld bc, .returnAddress
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push bc
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ld c, 4
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jp hl
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.returnAddress
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ldh a, [rOBP1]
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xor %01100100
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ldh [rOBP1], a
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call Delay3
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pop bc
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dec c
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jr nz, .loop
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pop af
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ld [wUpdateSpritesEnabled], a
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jp LoadPlayerSpriteGraphics
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GetMoveBoulderDustFunctionPointer:
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ld a, [wSpritePlayerStateData1FacingDirection]
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ld hl, MoveBoulderDustFunctionPointerTable
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ld c, a
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ld b, $0
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add hl, bc
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ld a, [hli]
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ld [wCoordAdjustmentAmount], a
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ld a, [hli]
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ld e, a
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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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push hl
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ld hl, wOAMBuffer + $90
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ld d, $0
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add hl, de
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ld e, l
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ld d, h
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pop hl
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ret
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boulder_dust_adjust: MACRO
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db \1, \2 ; coords
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dw \3 ; function
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ENDM
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MoveBoulderDustFunctionPointerTable:
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boulder_dust_adjust -1, 0, AdjustOAMBlockYPos ; down
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boulder_dust_adjust 1, 0, AdjustOAMBlockYPos ; up
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boulder_dust_adjust 1, 1, AdjustOAMBlockXPos ; left
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boulder_dust_adjust -1, 1, AdjustOAMBlockXPos ; right
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LoadSmokeTileFourTimes::
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ld hl, vChars1 tile $7c
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ld c, 4
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.loop
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push bc
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push hl
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call LoadSmokeTile
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pop hl
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ld bc, 1 tiles
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add hl, bc
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pop bc
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dec c
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jr nz, .loop
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ret
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LoadSmokeTile:
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ld de, SSAnneSmokePuffTile
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lb bc, BANK(SSAnneSmokePuffTile), (SSAnneSmokePuffTileEnd - SSAnneSmokePuffTile) / $10
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jp CopyVideoData
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SSAnneSmokePuffTile:
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INCBIN "gfx/overworld/smoke.2bpp"
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SSAnneSmokePuffTileEnd:
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