ref: d3e81422d50f937b91df19e058c25ac7288f6063
dir: /engine/overworld/dust_smoke.asm/
AnimateBoulderDust: ld a, $1 ld [wWhichAnimationOffsets], a ; select the boulder dust offsets ld a, [wUpdateSpritesEnabled] push af ld a, $ff ld [wUpdateSpritesEnabled], a ld a, %11100100 ldh [rOBP1], a call LoadSmokeTileFourTimes farcall WriteCutOrBoulderDustAnimationOAMBlock ld c, 8 ; number of steps in animation .loop push bc call GetMoveBoulderDustFunctionPointer ld bc, .returnAddress push bc ld c, 4 jp hl .returnAddress ldh a, [rOBP1] xor %01100100 ldh [rOBP1], a call Delay3 pop bc dec c jr nz, .loop pop af ld [wUpdateSpritesEnabled], a jp LoadPlayerSpriteGraphics GetMoveBoulderDustFunctionPointer: ld a, [wSpritePlayerStateData1FacingDirection] ld hl, MoveBoulderDustFunctionPointerTable ld c, a ld b, $0 add hl, bc ld a, [hli] ld [wCoordAdjustmentAmount], a ld a, [hli] ld e, a ld a, [hli] ld h, [hl] ld l, a push hl ld hl, wOAMBuffer + $90 ld d, $0 add hl, de ld e, l ld d, h pop hl ret MoveBoulderDustFunctionPointerTable: ; facing down db $FF,$00 dw AdjustOAMBlockYPos ; facing up db $01,$00 dw AdjustOAMBlockYPos ; facing left db $01,$01 dw AdjustOAMBlockXPos ; facing right db $FF,$01 dw AdjustOAMBlockXPos LoadSmokeTileFourTimes:: ld hl, vChars1 tile $7c ld c, 4 .loop push bc push hl call LoadSmokeTile pop hl ld bc, 1 tiles add hl, bc pop bc dec c jr nz, .loop ret LoadSmokeTile: ld de, SSAnneSmokePuffTile lb bc, BANK(SSAnneSmokePuffTile), (SSAnneSmokePuffTileEnd - SSAnneSmokePuffTile) / $10 jp CopyVideoData SSAnneSmokePuffTile: INCBIN "gfx/overworld/smoke.2bpp" SSAnneSmokePuffTileEnd: