mirror of
https://github.com/robmcmullen/fujirun.git
synced 2024-07-06 20:28:59 +00:00
331 lines
6.8 KiB
ArmAsm
331 lines
6.8 KiB
ArmAsm
; text & hgr screen utils
|
|
|
|
init_screen_once nop
|
|
lda #0
|
|
sta KBDSTROBE
|
|
sta drawpage
|
|
sta damageindex1
|
|
sta damageindex2
|
|
sta damageptr
|
|
sta damageptr1
|
|
sta damageptr2
|
|
lda #damagepage1
|
|
sta damageptr+1
|
|
sta damageptr1+1
|
|
lda #damagepage2
|
|
sta damageptr2+1
|
|
jsr draw_to_page1
|
|
rts
|
|
|
|
|
|
; character in A, col in X
|
|
text_put_col nop
|
|
sta $0400,x ; row 0
|
|
sta $0480,x ; row 1
|
|
sta $0500,x ; row 2
|
|
sta $0580,x ; row 3
|
|
sta $0600,x ; row 4
|
|
sta $0680,x ; row 5
|
|
sta $0700,x ; row 6
|
|
sta $0780,x ; row 7
|
|
sta $0428,x ; row 8
|
|
sta $04a8,x ; row 9
|
|
sta $0528,x ; row 10
|
|
sta $05a8,x ; row 11
|
|
sta $0628,x ; row 12
|
|
sta $06a8,x ; row 13
|
|
sta $0728,x ; row 14
|
|
sta $07a8,x ; row 15
|
|
sta $0450,x ; row 16
|
|
sta $04d0,x ; row 17
|
|
sta $0550,x ; row 18
|
|
sta $05d0,x ; row 19
|
|
sta $0650,x ; row 20
|
|
sta $06d0,x ; row 21
|
|
sta $0750,x ; row 22
|
|
sta $07d0,x ; row 23
|
|
rts
|
|
|
|
; maze is text screen 1
|
|
textrows_l .byte $00, $80, $00, $80, $00, $80, $00, $80
|
|
.byte $28, $a8, $28, $a8, $28, $a8, $28, $a8
|
|
.byte $50, $d0, $50, $d0, $50, $d0, $50, $d0
|
|
textrows_h .byte $04, $04, $05, $05, $06, $06, $07, $07
|
|
.byte $04, $04, $05, $05, $06, $06, $07, $07
|
|
.byte $04, $04, $05, $05, $06, $06, $07, $07
|
|
|
|
|
|
wipeclear1 ldy #0
|
|
sty param_y
|
|
wipeclear1_loop lda HGRROWS_L,y
|
|
sta wipeclear1_save_smc+1
|
|
lda HGRROWS_H1,y
|
|
sta wipeclear1_save_smc+2
|
|
ldx #39
|
|
lda #$ff
|
|
wipeclear1_save_smc sta $ffff,x
|
|
dex
|
|
bpl wipeclear1_save_smc
|
|
ldx #0
|
|
wipeclear1_wait nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
dex
|
|
bne wipeclear1_wait
|
|
inc param_y
|
|
ldy param_y
|
|
cpy #192
|
|
bcc wipeclear1_loop
|
|
rts
|
|
|
|
wipe2to1 ldy #0
|
|
sty param_y
|
|
wipe2to1_loop lda HGRROWS_H2,y
|
|
sta wipe2to1_load_smc+2
|
|
lda HGRROWS_L,y
|
|
sta wipe2to1_load_smc+1
|
|
sta wipe2to1_save_smc+1
|
|
lda HGRROWS_H1,y
|
|
sta wipe2to1_save_smc+2
|
|
ldx #39
|
|
wipe2to1_load_smc lda $ffff,x
|
|
wipe2to1_save_smc sta $ffff,x
|
|
dex
|
|
bpl wipe2to1_load_smc
|
|
ldx #0
|
|
wipe2to1_wait nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
dex
|
|
bne wipe2to1_wait
|
|
inc param_y
|
|
ldy param_y
|
|
cpy #192
|
|
bcc wipe2to1_loop
|
|
rts
|
|
|
|
|
|
copytexthgr nop
|
|
ldy #0 ; y is rows
|
|
copytexthgr_outer
|
|
lda textrows_h,y
|
|
ora #4
|
|
sta copytexthgr_src_smc+2
|
|
lda textrows_l,y
|
|
sta copytexthgr_src_smc+1
|
|
ldx #0 ; x is columns
|
|
copytexthgr_src_smc
|
|
lda $ffff,x
|
|
copytexthgr_dest_smc
|
|
jsr $ffff
|
|
inx
|
|
cpx #32
|
|
bcc copytexthgr_src_smc
|
|
iny
|
|
cpy #24
|
|
bcc copytexthgr_outer
|
|
rts
|
|
|
|
|
|
pageflip nop
|
|
lda drawpage
|
|
eor #$80
|
|
bpl show_page1 ; pos = show 1, draw 2; neg = show 1, draw 1
|
|
|
|
show_page2 lda #$80
|
|
sta drawpage
|
|
bit TXTPAGE2 ; show page 2, work on page 1
|
|
draw_to_page1 lda #$00
|
|
sta hgrselect
|
|
lda #$20
|
|
sta hgrhi
|
|
lda damageindex ; save other page's damage pointer
|
|
sta damageindex2
|
|
|
|
lda #DAMAGEPAGE1 ; point to page 1's damage area
|
|
sta damageptr+1
|
|
lda damageindex1
|
|
sta damageindex
|
|
|
|
; copy addresses for functions that write to one page or the other
|
|
lda #<FASTFONT_H1
|
|
sta fastfont+1
|
|
sta copytexthgr_dest_smc+1
|
|
lda #>FASTFONT_H1
|
|
sta fastfont+2
|
|
sta copytexthgr_dest_smc+2
|
|
rts
|
|
|
|
show_page1 lda #0
|
|
sta drawpage
|
|
bit TXTPAGE1 ; show page 1, work on page 2
|
|
draw_to_page2 lda #$60
|
|
sta hgrselect
|
|
lda #$40
|
|
sta hgrhi
|
|
lda damageindex ; save other page's damage pointer
|
|
sta damageindex1
|
|
|
|
lda #DAMAGEPAGE2 ; point to page 2's damage area
|
|
sta damageptr+1
|
|
lda damageindex2
|
|
sta damageindex
|
|
lda #<FASTFONT_H2
|
|
sta fastfont+1
|
|
sta copytexthgr_dest_smc+1
|
|
lda #>FASTFONT_H2
|
|
sta fastfont+2
|
|
sta copytexthgr_dest_smc+2
|
|
rts
|
|
|
|
; pageflip jump tables. JSR to one of these jumps and it will jump to the
|
|
; correct version for the page. The rts in there will return to the caller
|
|
|
|
fastfont jmp $ffff
|
|
|
|
|
|
|
|
restorebg_init
|
|
rts
|
|
|
|
restorebg_driver
|
|
; copy damaged characters back to screen
|
|
;jsr copytexthgr
|
|
ldy #0
|
|
sty param_count
|
|
restorebg_loop1 ldy param_count
|
|
cpy damageindex
|
|
bcc restorebg_cont ; possible there's no damage, so have to check first
|
|
ldy #0
|
|
sty damageindex ; clear damage index for this page
|
|
rts
|
|
restorebg_cont lda (damageptr),y ; groups of 4 x1 -> x2, y1 -> y2
|
|
sta param_x
|
|
iny
|
|
lda (damageptr),y
|
|
sta param_col
|
|
iny
|
|
lda (damageptr),y
|
|
sta param_y
|
|
iny
|
|
lda (damageptr),y
|
|
sta param_row
|
|
iny
|
|
sty param_count
|
|
|
|
ldy param_y
|
|
restorebg_row lda textrows_h,y
|
|
sta restorebg_row_smc+2
|
|
lda textrows_l,y
|
|
sta restorebg_row_smc+1
|
|
ldx param_x
|
|
restorebg_row_smc lda $ffff,x
|
|
jsr fastfont
|
|
inx
|
|
cpx param_col
|
|
bcc restorebg_row_smc
|
|
iny
|
|
cpy param_row
|
|
beq restorebg_row
|
|
bcc restorebg_row
|
|
bcs restorebg_loop1
|
|
|
|
|
|
|
|
; Draw sprites by looping through the list of sprites
|
|
renderstart
|
|
ldy #0
|
|
sty damageindex
|
|
|
|
lda #sprite_l - sprite_active
|
|
sta param_count
|
|
inc renderroundrobin_smc+1
|
|
|
|
renderroundrobin_smc
|
|
ldy #0
|
|
sty param_index
|
|
|
|
renderloop
|
|
lda param_index
|
|
and #sprite_l - sprite_active - 1
|
|
tay
|
|
lda sprite_active,y
|
|
beq renderskip ; skip if zero
|
|
lda sprite_l,y
|
|
sta jsrsprite_smc+1
|
|
lda sprite_h,y
|
|
sta jsrsprite_smc+2
|
|
lda sprite_x,y
|
|
sta param_x
|
|
lda sprite_y,y
|
|
sta param_y
|
|
jmp jsrsprite_smc
|
|
jsrsprite_smc
|
|
jsr $ffff ; wish you could JSR ($nnnn)
|
|
|
|
ldy damageindex
|
|
lda scratch_col ; contains the byte index into the line
|
|
sta (damageptr),y
|
|
iny
|
|
clc
|
|
adc damage_w
|
|
sta (damageptr),y
|
|
iny
|
|
|
|
; need to convert hgr y values to char rows
|
|
lda param_y
|
|
lsr a
|
|
lsr a
|
|
lsr a
|
|
sta (damageptr),y
|
|
iny
|
|
lda param_y
|
|
clc
|
|
adc damage_h
|
|
lsr a
|
|
lsr a
|
|
lsr a
|
|
sta (damageptr),y
|
|
iny
|
|
sty damageindex
|
|
|
|
renderskip
|
|
inc param_index
|
|
dec param_count
|
|
bne renderloop
|
|
|
|
renderend
|
|
rts
|
|
|
|
|
|
|
|
|
|
; Sprite data is interleaved so a simple indexed mode can be used. This is not
|
|
; convenient to set up but makes faster accessing because you don't have to
|
|
; increment the index register. For example, all the info about sprite #2 can
|
|
; be indexed using Y = 2 on the indexed operators, e.g. "lda sprite_active,y",
|
|
; "lda sprite_x,y", etc.
|
|
;
|
|
; Number of sprites must be a power of 2
|
|
|
|
sprite_active
|
|
.byte 1, 1, 1, 1, 1, 1, 1, 1 ; 1 = active, 0 = skip
|
|
|
|
sprite_l
|
|
.byte <APPLE_SPRITE9X11, <APPLE_SPRITE9X11, <APPLE_SPRITE9X11, <APPLE_SPRITE9X11, <APPLE_SPRITE9X11, <APPLE_SPRITE9X11, <APPLE_SPRITE9X11, <APPLE_SPRITE9X11
|
|
|
|
sprite_h
|
|
.byte >APPLE_SPRITE9X11, >APPLE_SPRITE9X11, >APPLE_SPRITE9X11, >APPLE_SPRITE9X11, >APPLE_SPRITE9X11, >APPLE_SPRITE9X11, >APPLE_SPRITE9X11, >APPLE_SPRITE9X11
|
|
|
|
sprite_x
|
|
.byte 80, 164, 33, 45, 4, 9, 180, 18
|
|
|
|
sprite_y
|
|
.byte 116, 126, 40, 60, 80, 100, 9, 140
|