Apple-2gs-SW/iigs-game-engine
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Fix _PopDirtyTile2 routine to sync with new TS_DIRTY conventions; fixes basic dirty sprite rendering

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This commit is contained in:
Lucas Scharenbroich 2022-07-07 09:12:23 -05:00
parent 182ebfd566
commit 77b69cdc82
2 changed files with 2 additions and 3 deletions
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2
src/Sprite2.s
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@ -129,7 +129,7 @@ _CalcDirtySprite
adc StartYMod208
bpl :y_ok
clc
adc #208 ; Wrap the actual coordinat around
adc #208 ; Wrap the actual coordinate around
:y_ok and #$FFF8 ; mask first to ensure LSR will clear the carry
lsr
lsr

3
src/tiles/DirtyTileQueue.s
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@ -70,8 +70,7 @@ _PopDirtyTile2 ; alternate entry point
sty DirtyTileCount ; remove last item from the list
ldx DirtyTiles,y ; load the offset into the Tile Store
lda #$FFFF
stal TileStore+TS_DIRTY,x ; clear the occupied backlink
stz TileStore+TS_DIRTY,x ; clear the occupied backlink
rts
; An optimized subroutine that runs through the dirty tile list and executes a callback function