dos33fsprogs/graphics/gr/thinking/thinking_attempt4.s
2021-07-01 17:21:19 -04:00

173 lines
2.4 KiB
ArmAsm

; Print-shop Style THINKING
; by Vince `deater` Weaver <vince@deater.net>
.include "zp.inc"
.include "hardware.inc"
COL = $F0
XSTART = $F1
XSTOP = $F2
YSTART = $F3
YSTOP = $F4
OFFSET = $F5
CURRENT = $F6
YY = $F7
XR = $F8
XL = $F9
YT = $FA
YB = $FB
thinking:
jsr SETGR ; set lo-res 40x40 mode
; A=$D0 afterward
lda #1
sta COL
lda #0
sta XL
sta YT
lda #39
sta XR
sta YB
big_loop:
lda COL
jsr SETCOL
; FOR Y=0 TO 20 STEP 2
; X=Y/2
; HLIN X,39-X AT Y
; HLIN X,39-X AT 39-Y
; VLIN Y,39-Y AT X
; VLIN Y,39-Y AT 39-X
; HLIN X,39-X AT Y
; HLIN X,39-X AT 39-Y
ldy XL
lda XR
sta $2C
lda YT
jsr HLINE ; HLINE Y,$2C at A
ldy XL
lda YB
jsr HLINE ; HLINE Y,$2C at A
; VLIN Y,39-Y AT X
; VLIN Y,39-Y AT 39-X
ldy XR
lda YB
sta $2D
lda YT
jsr VLINE ; VLINE A,$2D at Y
ldy XL
lda YB
sta $2D
lda YT
jsr VLINE ; VLINE A,$2D at Y
;==========================
; done drawing rainbow box
;==========================
;==========================
; write THINKING
;==========================
thinking_loop:
lda #7
sta YY
ldx #0
thinking_yloop:
lda YY
jsr GBASCALC ; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
ldy #0
inc_pointer:
inx
lda thinking_data-1,X
sta CURRENT
thinking_xloop:
ror CURRENT
bcc no_draw
lda #$00
sta (GBASL),Y
no_draw:
iny
tya
and #$7
beq inc_pointer
cpy #39
bne thinking_xloop
inc YY
lda YY
cmp #14
bne thinking_yloop
lda #255
jsr WAIT
;===================
; increment color
; after loop we are +10
; so -1 actually means increment 1 (because we mod 8 it)
dec COL
done:
jmp done
jmp big_loop
;0 1 2 3 3
;01234567|89012345|67890123|45678901|23456789
; ***** *| * * * | * * |* * * |* ***
; * *| * * **| * * *| * ** |* * *
; * *| * * **| * * * | * ** |* *
; * *|*** * * |* * ** | * * * |* *
; * *| * * * | ** * * | * * *|* * **
; * *| * * * | ** * *| * * *|* * *
; * *| * * * | * * |* * * |* ****
;
; 7*5 bytes = 35 bytes
thinking_data:
.byte $BE,$54,$14,$15,$39
.byte $88,$D4,$94,$34,$45
.byte $88,$D4,$54,$34,$05
.byte $88,$57,$35,$54,$05
.byte $88,$54,$56,$94,$65
.byte $88,$54,$96,$94,$45
.byte $88,$54,$14,$15,$79
color_lookup:
; magenta, pink, orange, yellow, lgreen, aqua, mblue, lblue
.byte $33,$BB,$99,$DD,$CC,$EE,$66,$77
; for apple II bot entry at $3F5
jmp thinking