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climb: clean up erase code

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This commit is contained in:
Vince Weaver 2024-09-15 00:02:17 -04:00
parent be4c387bae
commit d12e9ede7a
3 changed files with 16 additions and 41 deletions
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44
games/peasant_mini/cliff/climb.s
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@ -163,8 +163,8 @@ draw_bird:
; erase the bird if needed ; erase the bird if needed
ldx #0 ; always in erase slot 0 ldy #0 ; always in erase slot 0
jsr erase_enemy jsr hgr_partial_restore_by_num
; only draw bird if it's out ; only draw bird if it's out
@ -198,10 +198,10 @@ done_draw_bird:
lda #0 lda #0
sta CURRENT_ROCK sta CURRENT_ROCK
draw_rock_loop: draw_rock_loop:
ldx CURRENT_ROCK ldy CURRENT_ROCK
inx iny
jsr erase_enemy jsr hgr_partial_restore_by_num
ldx CURRENT_ROCK ldx CURRENT_ROCK
@ -821,37 +821,3 @@ bird_no_collide:
clc clc
rts rts
;=====================
; erase old
;=====================
; from A to X
; SAVED_Y1 to SAVED_Y2
;========================
; which one is in X
erase_enemy:
lda save_valid,X
bne really_erase_enemy
rts
really_erase_enemy:
lda #0
sta save_valid,X
lda save_ystart,X
sta SAVED_Y1
lda save_yend,X
sta SAVED_Y2
lda save_xstart,X
pha
lda save_xend,X
tax
pla
jmp hgr_partial_restore

9
games/peasant_mini/cliff/hgr_partial_restore.s
View File

@ -5,6 +5,15 @@
; Y is which ; Y is which
hgr_partial_restore_by_num: hgr_partial_restore_by_num:
lda save_valid,Y
bne really_partial_restore
rts
really_partial_restore:
lda #0
sta save_valid,Y
lda save_ystart,Y lda save_ystart,Y
sta SAVED_Y1 sta SAVED_Y1
lda save_yend,Y lda save_yend,Y

4
games/peasant_mini/cliff/hgr_sprite_bg_mask.s
View File

@ -21,8 +21,8 @@
; Y is save slot ; Y is save slot
hgr_draw_sprite_bg_mask: hgr_draw_sprite_bg_mask:
lda #1
; ldy #4 ; FIXME, should be proper save slot sta save_valid,Y
; save info on background to restore ; save info on background to restore