dos33fsprogs/mode7_demo/credits.s
2018-03-04 23:47:55 -05:00

306 lines
4.4 KiB
ArmAsm

; Closing Credits
NUM_CREDITS EQU 16
;===================
; init credits
;===================
init_credits:
ldy #0
lda (OUTL),Y ; get the first byte of credit
; which is the X-coord
sta CH ; store HTAB value
lda #22 ; text Y=22
sta CV ; store VTAB value
lda #$f0 ; -16
sta NAMEX ; we're clicking 10 times to get to our char
rts
;===========================
;===========================
; draw_credits
;===========================
;===========================
draw_credits:
credit_loop:
inner_loop:
jsr htab_vtab ; put the cursor (BASL/BASH) at CH,CV
ldy #1 ; skip the x-coord to get to string
print_loop:
lda (OUTL),Y ; get the character
beq done_print ; if 0 then end of string
clc
adc NAMEX ; subtract the char back
ora #$80 ; convert ASCII to apple normal text
sta (BASL),Y ; store it directly to screen
iny ; point to next character
jmp print_loop ; loop
done_print:
;==================
; click
;==================
lda LOOP ; get wait-at-end loop counter
beq not_waiting ; if not waiting, skip ahead
clc ; decrement counter
adc #$ff
sta LOOP
bne done_click ; if not zero, skip ahead
jsr next_credit ; was zero, skip to next credit
jsr init_credits
jmp done_click
not_waiting:
lda FRAME_COUNT ; slow down by x128
and #$7f
beq done_click
bit SPEAKER ; click the speaker
ldx NAMEX ; get the mutate counter
inx ; increment
stx NAMEX
cpx #0 ; if not 1, then continue
bne done_click
lda YY
cmp #NUM_CREDITS-1 ; wait after NUM_CREDITS-1
bne short_loop
long_loop:
lda #$ff
bne store_loop
short_loop:
lda #$30 ; set delay to show the credit before
store_loop:
sta LOOP ; continuing
done_click:
rts
;==================
; Next credit
;==================
next_credit:
lda #8 ; point to text line
sta CH
lda #22
sta CV
lda OUTH ; save credits pointer
pha
lda OUTL
pha
lda #>empty ; point to empty string
sta OUTH
lda #<empty
sta OUTL
jsr print_both_pages ; clear line on both pages
pla ; restore credits pointer
sta OUTL
pla
sta OUTH
ldy #0
skip_credit: ; skip ahead to next credit
lda (OUTL),Y
inc OUTL
bne overflow
inc OUTH
overflow:
cmp #0
beq done_skip
bne skip_credit
done_skip:
ldx YY ; increment credit pointer
inx
stx YY
rts
;===============================
; draw the above-credits chrome
;===============================
credits_draw_bottom:
lda #$ff
sta COLOR
; HLIN Y, V2 AT A
ldy #7
lda #32
sta V2
lda #38
jsr hlin_double
lda #$75
sta COLOR
; hlin_double(PAGE0,0,6,38);
ldy #0
lda #6
sta V2
lda #38
jsr hlin_double
; hlin_double(PAGE0,33,40,38);
ldy #33
lda #40
sta V2
lda #38
jsr hlin_double
; hlin_double(PAGE0,8,31,36);
ldy #8
lda #31
sta V2
lda #36
jsr hlin_double
lda #$70
sta COLOR
; hlin_double(PAGE0,7,7,36);
ldy #7
lda #7
sta V2
lda #36
jsr hlin_double
; hlin_double(PAGE0,32,32,36);
ldy #32
lda #32
sta V2
lda #36
jmp hlin_double ; tail call, will return for us
;============================
; Draw text mode boilerplate
;============================
credits_draw_text_background:
; text wings
lda #$20
sta COLOR
; hlin_double(0,7,40)
ldy #0
lda #7
sta V2
lda #40
jsr hlin_double
; hlin_double(32,40,40)
ldy #32
lda #40
sta V2
lda #40
jsr hlin_double
; hlin_double(0,7,44)
ldy #0
lda #7
sta V2
lda #44
jsr hlin_double
; hlin_double(0,7,44)
ldy #32
lda #40
sta V2
lda #44
jsr hlin_double
; hlin_double(7,33,48)
ldy #7
lda #32
sta V2
lda #46
jsr hlin_double
lda #11
sta CH
lda #20
sta CV
lda #>thankz
sta OUTH
lda #<thankz
sta OUTL
jmp move_and_print ; tail call
empty:
.asciiz " "
; offset can't be 0 or it confuses the next-credit code
; subtract one from centering(?)
credits:
.byte 14 ; 9
.asciiz "FROGGYSUE"
.byte 14 ; 10
.asciiz "MUSIC: ???"
.byte 13 ; 12
.asciiz "QKUMBA (LZ4)"
.byte 14 ; 10
.asciiz "PIANOMAN08"
.byte 14 ; 10
.asciiz "UTOPIA BBS"
.byte 10 ; 18
.asciiz "FORD PERFECT (SIC)"
.byte 12 ; 13
.asciiz "THE 7HORSEMEN"
.byte 9 ; 20
.asciiz "MITHLUIN AND ROOSTER"
.byte 13 ; 12
.asciiz "TALON KARRDE"
.byte 9 ; 20
.asciiz "WEAVE'S WORLD TALKER"
.byte 12 ; 14
.asciiz "DAISY AND JUNE"
.byte 12 ; 13
.asciiz "STEALTH SUSIE"
.byte 11 ; 16
.asciiz "ECE GRAD BOWLING"
.byte 13 ; 11
.asciiz "CORNELL GCF"
.byte 9 ; 21
.asciiz "ALL MSTIES EVERYWHERE"
.byte 17 ; 3
.asciiz "..."
thankz:
.asciiz "SPECIAL THANKS TO:"