hgr: lines: update hlin code

This commit is contained in:
Vince Weaver 2022-03-14 00:26:11 -04:00
parent 3b782553f0
commit ea6e862d26
4 changed files with 454 additions and 15 deletions

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@ -1,14 +1,13 @@
proper animations
ability to explode
particle effects
proper cursors
click on menu
wait a second after last lemming gone to exit
proper check for successful vs not end of level
ability to walk up hills
level 5
let's go sound
fill in some of the ground so we don't get stuck when digging
dig off the map, end level
better select pointer
+ proper animations
+ ability to explode
+ particle effects
+ click on menu
+ wait a second after last lemming gone to exit
+ proper check for successful vs not end of level
+ ability to walk up hills
+ level 5
+ let's go sound
+ fill in some of the ground so we don't get stuck when digging
+ dig off the map, end level

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@ -7,11 +7,12 @@ EMPTY_DISK = ../../../empty_disk
all: lines.dsk
lines.dsk: HELLO LINES LINES_ROM
lines.dsk: HELLO LINES LINES_ROM HGR_HLIN
cp $(EMPTY_DISK)/empty.dsk lines.dsk
$(DOS33) -y lines.dsk SAVE A HELLO
$(DOS33) -y lines.dsk BSAVE -a 0x0C00 LINES
$(DOS33) -y lines.dsk BSAVE -a 0x0C00 LINES_ROM
$(DOS33) -y lines.dsk BSAVE -a 0x0C00 HGR_HLIN
###
@ -40,9 +41,18 @@ LINES_ROM: lines_rom.o
lines_rom.o: lines_rom.s
ca65 -o lines_rom.o lines_rom.s -l lines_rom.lst
###
HGR_HLIN: hgr_hlin.o
ld65 -o HGR_HLIN hgr_hlin.o -C $(LINKER_SCRIPTS)/apple2_c00.inc
hgr_hlin.o: hgr_hlin.s
ca65 -o hgr_hlin.o hgr_hlin.s -l hgr_hlin.lst
###
clean:
rm -f *~ *.o *.lst HELLO LINES LINES_ROM
rm -f *~ *.o *.lst HELLO LINES LINES_ROM HGR_HLIN

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@ -0,0 +1,430 @@
; hgr fast hlin
HGR_BITS = $1C
GBASL = $26
GBASH = $27
HGR_COLOR = $E4
HGR_PAGE = $E6
div7_table = $9000
mod7_table = $9100
KEYPRESS = $C000
KEYRESET = $C010
HGR2 = $F3D8 ; clear PAGE2 to 0
HGR = $F3E2 ; set hires page1 and clear $2000-$3fff
HPOSN = $F411 ; (Y,X),(A) (values stores in HGRX,XH,Y)
COLOR_SHIFT = $F47E
COLORTBL = $F6F6
main:
; set graphics
jsr HGR
; init tables
jsr vgi_init
; draw lines
ldy #0
loop1:
tya
lsr
and #$7
tax
jsr set_hcolor
tya
pha
ldx #10
; lda #10
; ldy #100
jsr hgr_hlin
pla
tay
iny
iny
cpy #190
bne loop1
jsr wait_until_keypress
; test 2
jsr HGR2
; draw lines
ldy #0
loop2:
ldx #7 ; draw white
jsr set_hcolor
tya ; save y on stack
pha
tya ; line
lsr
sec
eor #$ff
adc #96
tax
tya
jsr hgr_hlin
pla
tay
iny
iny
cpy #192
bne loop2
jsr wait_until_keypress
; test 3
jsr HGR2
; draw lines
ldy #0
loop3:
ldx #7 ; draw white
jsr set_hcolor
tya
pha
ldx #0
jsr hgr_hlin
pla
tay
iny
cpy #192
bne loop3
jsr wait_until_keypress
; test 4
jsr HGR2
; draw lines
ldy #0
loop4:
ldx #3 ; draw white1
jsr set_hcolor
tya
pha
eor #$ff
sec
adc #192
tax
tya
jsr hgr_hlin
pla
tay
iny
cpy #192
bne loop4
jsr wait_until_keypress
done:
jmp main
wait_until_keypress:
bit KEYRESET
keypress_loop:
lda KEYPRESS
bpl keypress_loop
rts
;=================================
; Simple Horizontal LINE
;=================================
; line from (x,a) to (x+y,a)
; todo: use Carry to say if X>255
hgr_hlin:
; get ROW into (GBASL)
sty xrun_save
stx x1_save
;ldx VGI_RX1 ; X1 into X
; lda VGI_RY1 ; Y1 into A
ldy #0 ; always 0
jsr HPOSN ; (Y,X),(A) (values stores in HGRX,XH,Y)
; important part is row is in GBASL/GBASH
; also shifts color for us
; Y is already the RX1/7
; inc xrun_save ; needed because we compare with beq/bne
; check if narrow corner case where begin and end same block
; if RX%7 + XRUN < 8
ldx x1_save
lda mod7_table,X
clc
adc xrun_save
cmp #7
bcs not_same_block
same_block:
; want to use MASK of left_mask (MOD7) ORed with
; right_mask (7-(mod7+xrun7)
; 4+3
; 0000 CCCC 0000 1111
; 0000 000C 0000 0001
; 4000 = 80 80
; 4400 = 81 81
; 4800 = 83 83
; 4C00 = 87 87
; 5000 = 8F 8F
; 5400 = 9F 9F
; 5800 = BF BF
;----
; 5C00 = FF FF
; 4080 = ff 83 FF 81
; 4480 = ff 87
; 4880 = ff 8F
lda mod7_table,X ; get x1%7
tax ; put in X
lda left_masks,X
sta $10
txa ; x1%7
clc
adc xrun_save ; (x1%7)+xrun
tax
lda left_masks,X
eor #$7f
and $10
sta $10
lda (GBASL),Y
eor HGR_BITS
and $10
eor (GBASL),Y
; lda (GBASL),Y ; get current pattern
; eor HGR_BITS
; and left_masks,X
; ldx xrun_save
; and right_masks,X
; eor (GBASL),Y
sta (GBASL),Y
rts
not_same_block:
; see if not starting on boundary
; ldx x1_save
lda mod7_table,X
beq draw_run
; handle not full left border
handle_ragged_left:
tax
lda (GBASL),Y
eor HGR_BITS
and left_masks,X
eor (GBASL),Y
sta (GBASL),Y
iny ; move to next
; adjust RUN length by 7- mod7
txa ; load mod7
eor #$ff
sec
adc #7
eor #$ff
sec
adc xrun_save
sta xrun_save
; lda HGR_BITS ; cycle colors for next
; jsr COLOR_SHIFT
jsr shift_colors
; draw common
draw_run:
lda xrun_save
cmp #7
bcc draw_right ; blt
lda HGR_BITS ; get color
sta (GBASL),Y ; store out
; jsr COLOR_SHIFT ; shift colors
iny ; move to next block
jsr shift_colors
lda xrun_save ; take 7 off the run
sec
sbc #7
sta xrun_save
jmp draw_run
; draw rightmost
draw_right:
beq done_row
; lda HGR_BITS
; jsr COLOR_SHIFT
; see if not starting on boundary
ldx xrun_save
tax
lda (GBASL),Y
eor HGR_BITS
and right_masks,X
eor (GBASL),Y
sta (GBASL),Y
done_row:
done_done:
rts
x1_save: .byte $00
xrun_save: .byte $00
;=====================
; make /7 %7 tables
;=====================
vgi_init:
vgi_make_tables:
ldy #0
lda #0
ldx #0
div7_loop:
sta div7_table,Y
inx
cpx #7
bne div7_not7
clc
adc #1
ldx #0
div7_not7:
iny
bne div7_loop
ldy #0
lda #0
mod7_loop:
sta mod7_table,Y
clc
adc #1
cmp #7
bne mod7_not7
lda #0
mod7_not7:
iny
bne mod7_loop
rts
left_masks:
.byte $FF,$FE,$FC,$F8, $F0,$E0,$C0
; CCCCCCC
; 0CCCCCC
; 00CCCCC
; 000CCCC
; 0000CCC
; 00000CC
; 000000C
right_masks:
; .byte $81,$83,$87, $8F,$9F,$BF,$FF
.byte $80,$81,$83,$87, $8F,$9F,$BF,$FF
; C000000
; CC00000
; CCC0000
; CCCC000
; CCCCC00
; CCCCCC0
; CCCCCCC
;==========================
; shift colors
;==========================
; 00000000 and 10000000 => no change (black)
; 01111111 and 11111111 => no change? (white)
; 01010101 => invert 00101010
shift_colors:
lda HGR_BITS
asl
cmp #$C0
bpl done_shift_colors
lda HGR_BITS
eor #$7f
sta HGR_BITS
done_shift_colors:
rts
;==========================
; set color
;==========================
; color in X
set_hcolor:
lda COLORTBL,X
sta HGR_COLOR
rts