ref: d48a318dbf4b9e07da57980adb5894f5eadb11f7
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 boulder_dust_adjust: MACRO db \1, \2 ; coords dw \3 ; function ENDM MoveBoulderDustFunctionPointerTable: boulder_dust_adjust -1, 0, AdjustOAMBlockYPos ; down boulder_dust_adjust 1, 0, AdjustOAMBlockYPos ; up boulder_dust_adjust 1, 1, AdjustOAMBlockXPos ; left boulder_dust_adjust -1, 1, AdjustOAMBlockXPos ; right 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: