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oot2: more elevator work

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This commit is contained in:
Vince Weaver 2019-07-10 08:19:28 -04:00
parent 4a8832176b
commit 3528233422
1 changed files with 43 additions and 27 deletions
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70
ootw/ootw_c2_elevator.s
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@ -26,39 +26,32 @@ ootw_elevator:
; setup per-room variables
lda WHICH_JAIL
bne elevator1
cmp #4
bne elevator5
elevator0:
lda #(20+128)
elevator4:
lda #(-4+128)
sta LEFT_LIMIT
lda #(39+128)
lda #(30+128)
sta RIGHT_LIMIT
; set right exit
lda #1
sta jer_smc+1
lda #<ootw_jail
sta jer_smc+5
lda #>ootw_jail
sta jer_smc+6
lda #3
sta eel_smc+1
; set left exit
lda #0
sta jel_smc+1
lda #<ootw_jail
sta jel_smc+5
lda #>ootw_jail
sta jel_smc+6
jmp elevator_setup_done
elevator5:
cmp #5
bne elevator6
jmp jail_setup_done
elevator1:
lda #(-4+128)
sta LEFT_LIMIT
lda #(39+128)
lda #(30+128)
sta RIGHT_LIMIT
elevator6:
elevator_setup_done:
@ -144,7 +137,7 @@ elevator_exit_right:
eer_smc:
lda #$0
sta WHICH_CAVE
jmp ootw_elevator
jmp done_elevator
elevator_exit_left:
lda #37
@ -152,7 +145,7 @@ elevator_exit_left:
eel_smc:
lda #0
sta WHICH_CAVE
jmp ootw_elevator
jmp done_elevator
; loop forever
@ -171,8 +164,20 @@ done_elevator:
elevator_load_background:
; Line 0
lda #$88
ldy #0
elevator_background_loop:
lda gr_offsets,Y
sta line0_left_loop+1
sta line0_center_loop+1
lda gr_offsets+1,Y
clc
adc #$8
sta line0_left_loop+2
sta line0_center_loop+2
lda elevator_fb,Y
ldx #0
line0_left_loop:
sta $c00,X
@ -180,7 +185,7 @@ line0_left_loop:
cpx #16
bne line0_left_loop
lda #$00
lda elevator_fb+1,Y
line0_center_loop:
sta $c00,X
inx
@ -194,7 +199,18 @@ line0_right_loop:
cpx #39
bne line0_right_loop
iny
iny
cpy #48
bne elevator_background_loop
rts
elevator_fb:
.byte $88,$88,$88,$88,$88,$88,$88,$88,$88
.byte $00,$00,$00,$00,$00,$00,$00
.byte $88,$88,$88,$88,$88,$88,$88,$88
.byte $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00