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dos33fsprogs/mist/dentist_panel.s
Vince Weaver 58dcf1104f mist: dentist: feature complete?
2020-07-05 22:17:39 -04:00

1464 lines
20 KiB
ArmAsm
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; See the constellations, right across the sky
; No cigar no lady on his arm, just a guy made of dots and lines
; Power up, blinks switches yellow
; Change state, change button blinks
; animates to screen
; remembers light switch and date settings even when leave room
; day of month is 1-31 (even on months w/o 31 days)
; year 0-9999, leading 0 suppression
; time 1200AM - 1159PM, leading 0 suppression
; slider lights up when you adjust
; the actual constellation does seem to be based on a massive background,
; and a fore-shortened version appears on the panel when up
; but in original myst code? lower panel while light blinking (change)
; and come back, not blinking, but press button and nothing happens
; and light sticks on?
draw_date:
;=================
; draw the bars
startup_animate_smc:
lda #0
beq done_startup
dec startup_animate_smc+1
; 0001 1111
cmp #31
bne animate2
animate1:
lda #8
sta month_lit_smc+1
bne done_startup
animate2:
cmp #23
bne animate3
lda #8
sta date_lit_smc+1
bne done_startup
animate3:
cmp #15
bne animate4
lda #8
sta year_lit_smc+1
bne done_startup
animate4:
cmp #7
bne done_startup
lda #8
sta time_lit_smc+1
done_startup:
jsr draw_month_bar
jsr draw_date_bar
jsr draw_year_bar
jsr draw_time_bar
jsr draw_button
jsr draw_stars
;=================
; month
lda DENTIST_MONTH ; get month
asl
asl
tay
sty saved_month_ptr
; first letter
lda months,Y ; look up in month table
and #$3f ; get char from font
asl
tay
lda big_font,Y
sta INL
lda big_font+1,Y
sta INH
lda #$0
sta XPOS
lda #40
sta YPOS
jsr put_sprite_raw
; second letter
ldy saved_month_ptr
lda months+1,Y ; look up in month table
and #$3f ; get char from font
asl
tay
lda big_font,Y
sta INL
lda big_font+1,Y
sta INH
lda #$4
sta XPOS
lda #40
sta YPOS
jsr put_sprite_raw
; third letter
ldy saved_month_ptr
lda months+2,Y ; look up in month table
and #$3f ; get char from font
asl
tay
lda big_font,Y
sta INL
lda big_font+1,Y
sta INH
lda #$8
sta XPOS
lda #40
sta YPOS
jsr put_sprite_raw
;=================
; day
; tens
lda DENTIST_DAY ; note, starts with 0 so add 1
sed
clc
adc #1
cld
lsr
lsr
lsr
and #$1E
beq skip_tens ; skip tens if zero
tay
lda big_font_num,Y
sta INL
lda big_font_num+1,Y
sta INH
lda #16
sta XPOS
lda #40
sta YPOS
jsr put_sprite_raw
skip_tens:
lda DENTIST_DAY ; note, starts with 0 so add 1
sed
clc
adc #1
cld
and #$f
asl
tay
lda big_font_num,Y
sta INL
lda big_font_num+1,Y
sta INH
lda #20
sta XPOS
lda #40
sta YPOS
jsr put_sprite_raw
;=================
; year
lda #$ff ; draw in normal text
sta ps_smc1+1
ldx #0 ; nonzero (for leading zero suppression)
lda DENTIST_CENTURY
lsr
lsr
lsr
lsr
and #$f
bne century_top_not_zero
lda #$a0
bne store_century_top
century_top_not_zero:
inx
ora #$B0
store_century_top:
sta year_string+2
lda DENTIST_CENTURY
and #$f
bne century_bottom_not_zero
cpx #0
bne century_bottom_not_zero
lda #$a0
bne store_century_bottom
century_bottom_not_zero:
inx
ora #$B0
store_century_bottom:
sta year_string+3
lda DENTIST_YEAR
lsr
lsr
lsr
lsr
and #$f
bne year_top_not_zero
cpx #0
bne year_top_not_zero
lda #$a0
bne store_year_top
year_top_not_zero:
ora #$B0
store_year_top:
sta year_string+4
lda DENTIST_YEAR
and #$f
ora #$B0
sta year_string+5
lda #<year_string
sta OUTL
lda #>year_string
sta OUTH
jsr move_and_print
;=================
; time
;=================
lda DENTIST_HOURS
beq is_0dark30
cmp #$13
bcc update_hour
sed
sec
sbc #$12
cld
jmp update_hour
is_0dark30:
lda #$12
bne update_hour
update_hour:
sta TEMP
lda TEMP
lsr
lsr
lsr
lsr
and #$f
bne hour_top_not_zero
lda #$a0
bne store_hours_top
hour_top_not_zero:
ora #$B0
store_hours_top:
sta time_string+2
lda TEMP
and #$f
ora #$B0
store_hours_bottom:
sta time_string+3
lda DENTIST_MINUTES
lsr
lsr
lsr
lsr
and #$f
ora #$B0
store_minutes_top:
sta time_string+4
lda DENTIST_MINUTES
and #$f
ora #$B0
sta time_string+5
; calculate AM/PM
; AM if 0..11
lda DENTIST_HOURS
cmp #$12
bcc time_am
time_pm:
lda #'P'+$80
jmp write_am_pm
time_am:
lda #'A'+$80
write_am_pm:
sta time_string+6
lda #<time_string
sta OUTL
lda #>time_string
sta OUTH
jsr move_and_print
lda #$3f ; restore to drawing inverse text
sta ps_smc1+1
rts
year_string:
.byte 28,21,'0'+$80,'0'+$80,'0'+$80,'0'+$80,0
time_string:
.byte 28,23,'1'+$80,'2'+$80,'0'+$80,'0'+$80,'A'+$80,'M'+$80,0
saved_month_ptr:
.byte $00
months:
.byte "JAN",0
.byte "FEB",0
.byte "MAR",0
.byte "APR",0
.byte "MAY",0
.byte "JUN",0
.byte "JUL",0
.byte "AUG",0
.byte "SEP",0
.byte "OCT",0
.byte "NOV",0
.byte "DEC",0
; A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
; 5 1 2 1 3 1 1 3 1 2 3 2 2 2 1 1 3 1 1
big_font:
.word big_font_space ; @
.word big_font_a ; A
.word big_font_b ; B
.word big_font_c ; C
.word big_font_d ; D
.word big_font_e ; E
.word big_font_f ; F
.word big_font_g ; G
.word big_font_space ; H
.word big_font_space ; I
.word big_font_j ; J
.word big_font_space ; K
.word big_font_l ; L
.word big_font_m ; M
.word big_font_n ; N
.word big_font_o ; O
.word big_font_p ; P
.word big_font_space ; Q
.word big_font_r ; R
.word big_font_s ; S
.word big_font_t ; T
.word big_font_u ; U
.word big_font_v ; V
.word big_font_space ; W
.word big_font_space ; X
.word big_font_y ; Y
.word big_font_space ; Z
big_font_space:
.byte 3,4
.byte $a0,$a0,$a0
.byte $a0,$a0,$a0
.byte $a0,$a0,$a0
.byte $a0,$a0,$a0
big_font_a:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $BA,$a0,$BA ; : :
.byte $BA,$AD,$BA ; :-:
.byte $BA,$a0,$BA ; : :
big_font_b:
.byte 3,4
.byte $a0,$DF,$DF ; __
.byte $BA,$a0,$AF ; : /
.byte $BA,$AD,$a0 ; :-
.byte $BA,$DF,$AF ; :_/
big_font_c:
.byte 3,4
.byte $a0,$DF,$DF ; __
.byte $BA,$a0,$a0 ; :
.byte $BA,$A0,$a0 ; :
.byte $BA,$DF,$DF ; :__
big_font_d:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $BA,$a0,$DC ; : \
.byte $BA,$a0,$BA ; : :
.byte $BA,$DF,$AD ; :_/
big_font_e:
.byte 3,4
.byte $a0,$DF,$DF ; __
.byte $BA,$a0,$a0 ; :
.byte $BA,$AD,$a0 ; :-
.byte $BA,$DF,$DF ; :__
big_font_f:
.byte 3,4
.byte $a0,$DF,$DF ; __
.byte $BA,$a0,$a0 ; :
.byte $BA,$AD,$a0 ; :-
.byte $BA,$a0,$a0 ; :
big_font_g:
.byte 3,4
.byte $a0,$DF,$DF ; __
.byte $BA,$a0,$a0 ; :
.byte $BA,$a0,$AD ; : -
.byte $BA,$DF,$BA ; :_:
big_font_j:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $a0,$a0,$BA ; :
.byte $a0,$a0,$BA ; :
.byte $BA,$DF,$BA ; :_:
big_font_l:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $BA,$a0,$a0 ; :
.byte $BA,$a0,$a0 ; :
.byte $BA,$DF,$DF ; :__
big_font_m:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $BA,$a0,$BA ; : :
.byte $BA,$D6,$BA ; :V:
.byte $BA,$a0,$BA ; : :
big_font_n:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $BA,$a0,$BA ; : :
.byte $BA,$DC,$BA ; :\:
.byte $BA,$a0,$BA ; : :
big_font_o:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $BA,$a0,$BA ; : :
.byte $BA,$a0,$BA ; : :
.byte $BA,$DF,$BA ; :_:
big_font_p:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $BA,$a0,$BA ; : :
.byte $BA,$AD,$A7 ; :-'
.byte $BA,$a0,$a0 ; :
big_font_r:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $BA,$a0,$BA ; : :
.byte $BA,$AD,$A7 ; :-'
.byte $BA,$DC,$a0 ; :\
big_font_s:
.byte 3,4
.byte $a0,$DF,$DF ; __
.byte $BA,$a0,$a0 ; :
.byte $a0,$AD,$a0 ; -
.byte $DF,$DF,$BA ; __:
big_font_t:
.byte 3,4
.byte $DF,$DF,$DF ; ___
.byte $a0,$BA,$a0 ; :
.byte $a0,$BA,$a0 ; :
.byte $a0,$BA,$a0 ; :
big_font_u:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $BA,$a0,$BA ; : :
.byte $BA,$a0,$BA ; : :
.byte $BA,$DF,$BA ; :_:
big_font_v:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $BA,$a0,$BA ; : :
.byte $BA,$a0,$AF ; : /
.byte $BA,$AF,$a0 ; :/
big_font_y:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $BA,$a0,$BA ; : :
.byte $A7,$AE,$A7 ; '.'
.byte $a0,$BA,$a0 ; :
big_font_num:
.word big_font_0 ; 0
.word big_font_1 ; 1
.word big_font_2 ; 2
.word big_font_3 ; 3
.word big_font_4 ; 4
.word big_font_5 ; 5
.word big_font_6 ; 6
.word big_font_7 ; 7
.word big_font_8 ; 8
.word big_font_9 ; 9
big_font_0:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $BA,$a0,$BA ; : :
.byte $BA,$a0,$BA ; : :
.byte $BA,$DF,$BA ; :_:
big_font_1:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $a0,$a0,$BA ; :
.byte $a0,$a0,$BA ; :
.byte $a0,$a0,$BA ; :
big_font_2:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $a0,$a0,$BA ; :
.byte $a0,$AD,$a0 ; -
.byte $BA,$DF,$DF ; :__
big_font_3:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $a0,$a0,$BA ; :
.byte $a0,$AD,$BA ; -:
.byte $a0,$DF,$BA ; _:
big_font_4:
.byte 3,4
.byte $a0,$a0,$a0 ;
.byte $BA,$a0,$BA ; : :
.byte $A7,$AD,$BA ; '-:
.byte $A0,$A0,$BA ; :
big_font_5:
.byte 3,4
.byte $a0,$DF,$DF ; __
.byte $BA,$a0,$a0 ; :
.byte $a0,$AD,$a0 ; -
.byte $DF,$DF,$BA ; __:
big_font_6:
.byte 3,4
.byte $a0,$DF,$DF ; __
.byte $BA,$a0,$a0 ; :
.byte $BA,$AD,$AE ; :-.
.byte $BA,$DF,$BA ; :_:
big_font_7:
.byte 3,4
.byte $DF,$DF,$a0 ; __
.byte $a0,$a0,$BA ; :
.byte $a0,$a0,$BA ; :
.byte $a0,$a0,$BA ; :
big_font_8:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $BA,$a0,$BA ; : :
.byte $BA,$AD,$BA ; :-:
.byte $BA,$DF,$BA ; :_:
big_font_9:
.byte 3,4
.byte $a0,$DF,$a0 ; _
.byte $BA,$a0,$BA ; : :
.byte $A7,$AD,$BA ; '-:
.byte $a0,$DF,$BA ; _:
; 012345678901234567890
; _
; : : : : :
; : :-: :\:
;:_: : : : :
; __ _ __
;: : : /
;:-- :- :-
;: :_ :_/
; _ _
;: : : : : :
;:V: :-: :_/
;: : : : : \
; 1 2 3
;012345678901234567890123456789013456789
; _ __ ___ __ __
;: : : : : : 1984
;: : : : -- --
;:_: :__ : . :__ :__ 10 04 AM
; _ _ __ _ _
; | | | : : : | | | | | | |
; | | | : : : | -| |-| |_|
; - - : . : : | _| |_| |
; sliders
; 8 -> 25 (18)
; if 16
; 24*60=1440
; 0*12/8 = 0 0*31/8=0 0*9999/8=0 0
; 1*12/8 = 1.5 1*31/8=3.9 1250 180 3:00
; 2*12/8 = 3 2*31/8=7.8 2500 360 6:00
; 3*12/8 = 4.5 11.6 3750 540 9:00
; 4*12/8 = 6 15.5 5000 720 12:00
; 5*12/8 = 7.5 19.4 6250 900 15:00
; 6*12/8 = 9 23.25 7500 1080 18:00
; 7*12/8 = 10.5 27.12 8750 1260 21:00
; 8*12/8 = 12 31 9999 1440 24:00
month_limits:
.byte 0,1,3,4,6,7,9,10,11
date_limits:
.byte $00,$04,$08,$12,$16,$20,$24,$28,$30
century_limits: ; 21 is wrong
.byte $00,$12,$21,$37,$50,$62,$75,$87,$99 ; makes scroll to 1984
hour_limits: ; faster
.byte $00,$03,$06,$09,$12,$15,$18,$21,$23
arbitrary:
;===============================
;===============================
; draw the slider bars
;===============================
;===============================
draw_month_bar:
lda DENTIST_MONTH
ldx #0
find_month_yval:
cmp month_limits,X
beq found_month_yval
bcc found_month_yval
inx
cpx #8
bne find_month_yval
found_month_yval:
lda #22
month_lit_smc:
ldy #0
beq draw_bar
dec month_lit_smc+1
jmp draw_lit_bar
draw_date_bar:
lda DENTIST_DAY
ldx #0
find_date_yval:
cmp date_limits,X
beq found_date_yval
bcc found_date_yval
inx
cpx #8
bne find_date_yval
found_date_yval:
lda #26
date_lit_smc:
ldy #0
beq draw_bar
dec date_lit_smc+1
jmp draw_lit_bar
draw_year_bar:
lda DENTIST_CENTURY
ldx #0
find_year_yval:
cmp century_limits,X
beq found_year_yval
bcc found_year_yval
inx
cpx #8
bne find_year_yval
found_year_yval:
lda #30
year_lit_smc:
ldy #0
beq draw_bar
dec year_lit_smc+1
jmp draw_lit_bar
draw_time_bar:
lda DENTIST_HOURS
ldx #0
find_time_yval:
cmp hour_limits,X
beq found_time_yval
bcc found_time_yval
inx
cpx #8
bne find_time_yval
found_time_yval:
lda #34
time_lit_smc:
ldy #0
beq draw_bar
dec time_lit_smc+1
jmp draw_lit_bar
draw_bar:
sta XPOS
txa
asl
clc
adc #8
sta YPOS
lda #<panel_bar_sprite
sta INL
lda #>panel_bar_sprite
sta INH
jsr put_sprite_crop
rts
draw_lit_bar:
sta XPOS
txa
asl
clc
adc #8
sta YPOS
lda #<panel_bar_lit_sprite
sta INL
lda #>panel_bar_lit_sprite
sta INH
jsr put_sprite_crop
rts
;==============================
;==============================
; draw the button
;==============================
;==============================
draw_button:
button_smc:
lda #0
beq done_button
lda FRAMEL
and #$20
beq done_button
lda #<button_on_sprite
sta INL
lda #>button_on_sprite
sta INH
lda #20
sta XPOS
lda #16
sta YPOS
jsr put_sprite_crop
done_button:
rts
panel_bar_sprite:
.byte 3,1
.byte $00,$00,$00
panel_bar_lit_sprite:
.byte 3,1
.byte $00,$dd,$00
button_on_sprite:
.byte 1,1
.byte $dd
;========================
;========================
; button pressed
;========================
;========================
panel_button:
lda CURSOR_Y
cmp #12
bcc done_panel_button
cmp #24
bcs done_panel_button
lda #32
sta ANIMATE_FRAME
lda #0
sta button_smc+1
lda DENTIST_MONTH
sta saved_month
lda DENTIST_DAY
sta saved_day
lda DENTIST_CENTURY
sta saved_century
lda DENTIST_YEAR
sta saved_year
lda DENTIST_HOURS
sta saved_hour
lda DENTIST_MINUTES
sta saved_minutes
done_panel_button:
rts
;===========================
;===========================
; panel pressed
;===========================
;===========================
panel_pressed:
lda CURSOR_X
cmp #32
bcs panel_time
cmp #28
bcs panel_year
cmp #24
bcs panel_day
cmp #20
bcs panel_month
bcc panel_button
panel_month:
lda #5
sta month_lit_smc+1
lda CURSOR_Y
check_month_dec:
cmp #8
bcs check_month_inc
jmp dec_dentist_month
check_month_inc:
cmp #26
bcc check_month_bar
jmp inc_dentist_month
check_month_bar:
sec
sbc #8
lsr
tax
lda month_limits,X
sta DENTIST_MONTH
jmp done_pressed_changed
panel_day:
lda #5
sta date_lit_smc+1
lda CURSOR_Y
check_day_dec:
cmp #8
bcs check_day_inc
jmp dec_dentist_day
check_day_inc:
cmp #26
bcc check_day_bar
jmp inc_dentist_day
check_day_bar:
sec
sbc #8
lsr
tax
lda date_limits,X
sta DENTIST_DAY
jmp done_pressed_changed
panel_year:
lda #5
sta year_lit_smc+1
lda CURSOR_Y
check_year_dec:
cmp #8
bcs check_year_inc
jmp dec_dentist_year
check_year_inc:
cmp #26
bcc check_year_bar
jmp inc_dentist_year
check_year_bar:
sec
sbc #8
lsr
tax
lda century_limits,X
sta DENTIST_CENTURY
lda #0
sta DENTIST_YEAR
jmp done_pressed_changed
panel_time:
lda #5
sta time_lit_smc+1
lda CURSOR_Y
cmp #8
bcc dec_dentist_time
cmp #26
bcs inc_dentist_time
check_time_bar:
sec
sbc #8
lsr
tax
lda hour_limits,X
sta DENTIST_HOURS
lda #0
sta DENTIST_MINUTES
jmp done_pressed_changed
rts
inc_dentist_time:
lda DENTIST_HOURS
cmp #$23
bne actually_inc_time
lda DENTIST_MINUTES
cmp #$59
beq done_pressed2
actually_inc_time:
sed
clc
lda DENTIST_MINUTES
adc #1
sta DENTIST_MINUTES
cmp #$60
bne done_pressed2
lda #$00
sta DENTIST_MINUTES
clc
lda DENTIST_HOURS
adc #1
sta DENTIST_HOURS
jmp done_pressed_changed
dec_dentist_time:
lda DENTIST_HOURS
bne actually_dec_time
lda DENTIST_MINUTES
beq done_pressed2
actually_dec_time:
sed
sec
lda DENTIST_MINUTES
sbc #1
sta DENTIST_MINUTES
cmp #$99
bne done_pressed2
lda #$59
sta DENTIST_MINUTES
lda DENTIST_HOURS
sec
sbc #1
sta DENTIST_HOURS
jmp done_pressed_changed
done_pressed2:
cld
rts
inc_dentist_year:
lda DENTIST_CENTURY
cmp #$99
bne actually_inc_year
lda DENTIST_YEAR
cmp #$99
beq done_pressed
actually_inc_year:
sed
clc
lda DENTIST_YEAR
adc #1
sta DENTIST_YEAR
lda DENTIST_CENTURY
adc #0
sta DENTIST_CENTURY
jmp done_pressed_changed
dec_dentist_year:
lda DENTIST_CENTURY
bne actually_dec_year
lda DENTIST_YEAR
beq done_pressed
actually_dec_year:
sed
sec
lda DENTIST_YEAR
sbc #1
sta DENTIST_YEAR
lda DENTIST_CENTURY
sbc #0
sta DENTIST_CENTURY
jmp done_pressed_changed
inc_dentist_month:
lda DENTIST_MONTH
cmp #11
beq done_pressed
inc DENTIST_MONTH
jmp done_pressed_changed
dec_dentist_month:
lda DENTIST_MONTH
cmp #0
beq done_pressed
dec DENTIST_MONTH
jmp done_pressed_changed
inc_dentist_day:
lda DENTIST_DAY
cmp #$30
beq done_pressed
sed
clc
adc #1
sta DENTIST_DAY
jmp done_pressed_changed
dec_dentist_day:
lda DENTIST_DAY
cmp #0
beq done_pressed
sed
sec
sbc #1
sta DENTIST_DAY
jmp done_pressed_changed
done_pressed:
cld
rts
done_pressed_changed:
cld
lda #1
sta button_smc+1
rts
;===========================
;===========================
; draw stars
;===========================
;===========================
draw_stars:
lda DENTIST_LIGHT
bne stars_lights_off
; if lights on
lda #6
sta XPOS
lda #6
sta YPOS
lda #<lights_on_sprite
sta INL
lda #>lights_on_sprite
sta INH
jmp put_sprite_crop
stars_lights_off:
lda ANIMATE_FRAME
beq regular_stars
dec ANIMATE_FRAME
tay
; plot 1st
lda #$0f
sta plot_color+1
lda saved_year,Y
eor arbitrary,Y
tax
ldy saved_minutes
jsr special_plot_point
; plot 2nd
ldy ANIMATE_FRAME
lda #$ff
sta plot_color+1
lda saved_month,Y
eor arbitrary,Y
tax
lda saved_hour,Y
sbc arbitrary,Y
tay
jsr special_plot_point
; plot 3rd
ldy ANIMATE_FRAME
lda #$f0
sta plot_color+1
lda saved_hour,Y
adc arbitrary,Y
tax
lda saved_year,Y
sbc arbitrary,Y
tay
jsr special_plot_point
; plot 4th
ldy ANIMATE_FRAME
lda #$50
sta plot_color+1
lda saved_minutes,Y
eor arbitrary,Y
tax
lda saved_year,Y
adc arbitrary,Y
tay
jsr special_plot_point
rts
regular_stars:
lda saved_month
cmp #9 ; OCTOBER
beq draw_leaf
cmp #0
beq draw_snake
cmp #10
beq draw_bug
bne not_special
; OCT 11 1984 10:04AM (leaf)
draw_leaf:
lda saved_day
cmp #$10
bne not_special
lda saved_century
cmp #$19
bne not_special
lda saved_hour
cmp #$10
bne not_special
lda #7
sta XPOS
lda #8
sta YPOS
lda #<october_sprite
sta INL
lda #>october_sprite
sta INH
jmp put_sprite_crop
; JAN 17 1207 5:46AM (snake)
draw_snake:
lda saved_day
cmp #$16
bne not_special
lda saved_century
cmp #$12
bne not_special
lda saved_hour
cmp #$5
bne not_special
lda #7
sta XPOS
lda #8
sta YPOS
lda #<january_sprite
sta INL
lda #>january_sprite
sta INH
jmp put_sprite_crop
; NOV 23 9791 6:57PM (bug)
draw_bug:
lda saved_day
cmp #$22
bne not_special
lda saved_century
cmp #$97
bne not_special
lda saved_hour
cmp #$18
bne not_special
lda #7
sta XPOS
lda #8
sta YPOS
lda #<november_sprite
sta INL
lda #>november_sprite
sta INH
jmp put_sprite_crop
not_special:
; plot 4 stars, somewhat randomly based on settings
; plot 1st
lda #$0f
sta plot_color+1
lda saved_year
eor saved_month
tax
ldy saved_minutes
jsr special_plot_point
; plot 2nd
lda #$ff
sta plot_color+1
lda saved_month
eor saved_year
tax
lda saved_hour
sbc saved_minutes
tay
jsr special_plot_point
; plot 3rd
lda #$f0
sta plot_color+1
lda saved_hour
adc saved_minutes
tax
lda saved_year
sbc saved_day
tay
jsr special_plot_point
; plot 4th
lda #$50
sta plot_color+1
lda saved_minutes
eor saved_day
tax
lda saved_year
adc saved_day
tay
jsr special_plot_point
rts
special_plot_point:
txa
and #$7
clc
adc #$7
sta CH
tya
and #$7
clc
adc #$4
sta CV
jmp plot_point
saved_month:
.byte $00
saved_day:
.byte $00
saved_century:
.byte $00
saved_year:
.byte $00
saved_hour:
.byte $00
saved_minutes:
.byte $00
; constellations
; 6x6
lights_on_sprite:
.byte 9,10
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
; OCT 11 1984 10:04AM (leaf)
october_sprite:
.byte 7,7
.byte $00,$00,$00,$00,$00,$f0,$00
.byte $00,$f0,$00,$00,$00,$0f,$00
.byte $00,$0f,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00
.byte $00,$f0,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$ff
.byte $f0,$0f,$00,$0f,$00,$00,$00
; JAN 17 1207 5:46AM (snake)
january_sprite:
.byte 7,7
.byte $00,$0f,$00,$00,$00,$ff,$00
.byte $00,$ff,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$0f
.byte $00,$00,$00,$f0,$00,$00,$0f
.byte $00,$00,$ff,$00,$00,$00,$00
; NOV 23 9791 6:57PM (bug)
november_sprite:
.byte 7,7
.byte $f0,$00,$00,$ff,$00,$00,$f0
.byte $00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$ff,$00,$00,$0f,$00
.byte $00,$00,$00,$00,$00,$00,$00
.byte $00,$f0,$00,$00,$00,$f0,$00
.byte $00,$00,$00,$00,$00,$0f,$00
.byte $00,$00,$00,$0f,$00,$00,$00
; turn on double high point at CH,CV
plot_point:
lda CV ; y
asl
tax
lda gr_offsets,X
sta OUTL
lda gr_offsets+1,X
clc
adc DRAW_PAGE
sta OUTH
lda CH ; x
tay
plot_color:
lda #$77
sta (OUTL),Y
rts
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