Apple-2gs-SW/iigs-game-engine
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Fixed title screen. Verified all of World 1 renders correctly

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Lucas Scharenbroich 2023-05-24 14:44:15 -05:00
parent aa684ef58c
commit 361e814fd0
1 changed files with 8 additions and 8 deletions
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16
demos/smb/rom2.s
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@ -1676,13 +1676,13 @@ DrawTitleScreen
sta $01 ;the indirect at $00 sta $01 ;the indirect at $00
ldy #$00 ldy #$00
sty $00 sty $00
lda PPU_DATA ;do one garbage read jsr PPU_DATA_R ;do one garbage read
OutputTScr lda PPU_DATA ;get title screen from chr-rom OutputTScr jsr PPU_DATA_R ;get title screen from chr-rom
sta ($00),y ;store 256 bytes into buffer sta ($00),y ;store 256 bytes into buffer
iny iny
bne ChkHiByte ;if not past 256 bytes, do not increment bne ChkHiByte ;if not past 256 bytes, do not increment
inc $01 ;otherwise increment high byte of indirect inc $01 ;otherwise increment high byte of indirect
ChkHiByte lda $01 ;check high byte? ChkHiByte lda $01 ;check high byte?
cmp #$04 ;at $0400? cmp #$04 ;at $0400?
bne OutputTScr ;if not, loop back and do another bne OutputTScr ;if not, loop back and do another
cpy #$3a ;check if offset points past end of data cpy #$3a ;check if offset points past end of data
@ -10065,22 +10065,22 @@ MoveLakitu
and #%00100000 ;for d5 set and #%00100000 ;for d5 set
beq ChkLS ;if not set, continue with code beq ChkLS ;if not set, continue with code
jmp MoveD_EnemyVertically ;otherwise jump to move defeated lakitu downwards jmp MoveD_EnemyVertically ;otherwise jump to move defeated lakitu downwards
ChkLS lda Enemy_State,x ;if lakitu's enemy state not set at all, ChkLS lda Enemy_State,x ;if lakitu's enemy state not set at all,
beq Fr12S ;go ahead and continue with code beq Fr12S ;go ahead and continue with code
lda #$00 lda #$00
sta LakituMoveDirection,x ;otherwise initialize moving direction to move to left sta LakituMoveDirection,x ;otherwise initialize moving direction to move to left
sta EnemyFrenzyBuffer ;initialize frenzy buffer sta EnemyFrenzyBuffer ;initialize frenzy buffer
lda #$10 lda #$10
bne SetLSpd ;load horizontal speed and do unconditional branch bne SetLSpd ;load horizontal speed and do unconditional branch
Fr12S lda #Spiny Fr12S lda #Spiny
sta EnemyFrenzyBuffer ;set spiny identifier in frenzy buffer sta EnemyFrenzyBuffer ;set spiny identifier in frenzy buffer
ldy #$02 ldy #$02
LdLDa lda LakituDiffAdj,y ;load values LdLDa lda LakituDiffAdj,y ;load values
sta $0001,y ;store in zero page sta $0001,y ;store in zero page
dey dey
bpl LdLDa ;do this until all values are stired bpl LdLDa ;do this until all values are stired
jsr PlayerLakituDiff ;execute sub to set speed and create spinys jsr PlayerLakituDiff ;execute sub to set speed and create spinys
SetLSpd sta LakituMoveSpeed,x ;set movement speed returned from sub SetLSpd sta LakituMoveSpeed,x ;set movement speed returned from sub
ldy #$01 ;set moving direction to right by default ldy #$01 ;set moving direction to right by default
lda LakituMoveDirection,x lda LakituMoveDirection,x
and #$01 ;get LSB of moving direction and #$01 ;get LSB of moving direction
@ -10091,7 +10091,7 @@ SetLSpd sta LakituMoveSpeed,x ;set movement speed returned from sub
adc #$01 adc #$01
sta LakituMoveSpeed,x ;store as new moving speed sta LakituMoveSpeed,x ;store as new moving speed
iny ;increment moving direction to left iny ;increment moving direction to left
SetLMov sty Enemy_MovingDir,x ;store moving direction SetLMov sty Enemy_MovingDir,x ;store moving direction
jmp MoveEnemyHorizontally ;move lakitu horizontally jmp MoveEnemyHorizontally ;move lakitu horizontally
PlayerLakituDiff PlayerLakituDiff