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keen: fix fade-in

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This commit is contained in:
Vince Weaver 2024-04-13 11:16:43 -04:00
parent be968a1ad1
commit 62c01b77c4
1 changed files with 17 additions and 2 deletions
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19
games/keen/mars.s
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@ -24,6 +24,8 @@ mars_start:
bit LORES
bit FULLGR
lda #0
sta clear_all_color+1
jsr clear_all ; avoid grey stripes at load
lda KEENS
@ -45,12 +47,15 @@ plenty_of_keens:
lda #4
sta DRAW_PAGE
; see if returning and it game over
; see if returning and if game over
lda LEVEL_OVER
cmp #GAME_OVER
beq return_to_title
bne not_game_over
jmp return_to_title
not_game_over:
; TODO: set this in title, don't over-write
@ -88,8 +93,18 @@ plenty_of_keens:
jsr copy_tilemap_subset
; make a copy in $c00 for fade-in purposes
lda DRAW_PAGE ; necssary
pha
lda #8
sta DRAW_PAGE
jsr draw_tilemap
pla
sta DRAW_PAGE
lda #1
sta INITIAL_SOUND