wires: update, looks better
This commit is contained in:
Vince Weaver
parent
07dc31e386
commit
a52bb27d32
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@ -1,2 +1,2 @@
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1FORI=0TO140:POKE875+I,4*PEEK(2125+I)-192+(PEEK(2266+I/3)-35)/4^(I-INT(I/3)*3):NEXT
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2&",clZ48jl;=^X-QWh?WD>2(02TQV,?V*>b2j_0@`(i1^U:2W0>bd^Xa,k0j_E_B1D^0M9R802,1QePBU3T0XlO;8=mY8J0N9X5U:21oY_03_2V/Z.Y_a/Q463nR4aHZV1`4VI>lMA.84G0S$/E>3CM;3C+#S3*+Z6#'`QK=K/%+6*06*)W;<BC#DUCbE_
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2&",clZ48jl;=^X-QW<?WX>2(02TQV-?V+>b.i_,?b(Y1f/:2W0>bd^Xa,k0j_E_B1D^0M9R802,1QePBU3T0XlO;8=mY8J0N9X5U:21oY_03_2K/ZSf02X8Q<83nR4iJXb4T9W:JoKI04G0S$/E>3CM;3C;3S4*+Z6#'`QK=K/%+6*06*)WGTG$%#-Ua._
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@ -11,6 +11,7 @@
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; 144 -- back to original layout
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; 142 -- jump to earlier BGND entry point
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; 141 -- start at $FF even though it misses upper left
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; this makes noticable glitches though
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; goal=141
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@ -25,110 +26,85 @@ CTEMP = $FC
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;================================
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plasma:
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; jsr SETGR ; set lo-res 40x40 mode
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; bit SET_GR
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; bit FULLGR ; make it 40x48
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jsr $F3D8 ; HGR2 (and full screen), set HGRPAGE to $40
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; after, A is #$60
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lda #$10 ; want to write $10 to memory
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; sta HGRBITS
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lda #$10 ; write $10 to the 8k starting at $4000
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jsr $F3F4 ; does the store, is this allowed?
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; jsr $F3F6 ; BKGND
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; stores to HGR.BITS and then runs BKGND
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bit LORES ; switch to lo-res
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; we only create a 16x16 texture, which we pattern across 40x48 screen
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;================================
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; create texture
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;================================
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; we create a 16x16 texture, which we pattern across 40x48 screen
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ldx #15
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; need to beat 30 bytes
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ldx #15 ; store at 15,x 8,x
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; and x,15 x,8
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; 240+x, (x*16),15
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; store at 15,x 8,x and x,15 x,8
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; 240+x, (x*16),15
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write_loop:
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txa
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sta lookup+240,X
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sta lookup+112,X
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txa ; write 0123456789ABCDEF pattern horizontally
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sta lookup+64,X ; line at Y=4
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sta lookup+192,X ; line at Y=12
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asl
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asl ; draw vertical line
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asl
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asl
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asl
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tay
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txa
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sta lookup,Y
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sta lookup+8,Y
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sta lookup+4,Y ; line at X=4
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sta lookup+12,Y ; line at X=12
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dex
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bpl write_loop
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;create_lookup:
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; ldy #15
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;create_yloop:
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; ldx #15
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;create_xloop:
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; ; vertical
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; txa
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;; and #$7
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; bne horizh
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;
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;xnot:
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; tya
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; bne lookup_smc
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;
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;horiz:
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; ; horizontal
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; tya
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;; and #$7
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; beq ynot
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;
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; lda #$10
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; bne lookup_smc
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;ynot:
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; txa
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;lookup_smc:
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; sta lookup ; always starts at $d00
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; inc lookup_smc+1
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; dex
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; bpl create_xloop
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; dey
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; bpl create_yloop
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; X is $FF
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create_lookup_done:
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forever_loop:
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; X is $FF
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; Y is $00?
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;=========================
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; cycle colors
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;=========================
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cycle_colors:
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; cycle colors
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; can't do palette rotate on Apple II so faking it here
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; just incrementing every entry in texture by 1
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; for this one we wrap at $f
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; and we don't touch color $10 which maps to zero (black)
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; X is $FF when arriving here
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; both from init and from end loop
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; ldx #0
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; inx ; make X 0
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;cycle_loop:
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; ldy lookup,X
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; cpy #$10 ; $10 is black background, don't rotate it
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; beq skip_zero
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; dey
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; tya
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; and #$f
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; sta lookup,X
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;skip_zero:
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; dex
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; bne cycle_loop
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cycle_loop:
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ldy lookup,X
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cpy #$10
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beq skip_zero
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iny
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tya
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lda lookup,X
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cmp #$10 ; $10 is black background, don't rotate it
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; carry set if >=10
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bcs skip_zero
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sbc #0
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and #$f
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sta lookup,X
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skip_zero:
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@ -136,9 +112,9 @@ skip_zero:
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bne cycle_loop
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;=========================
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; set/flip pages
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;=========================
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; we want to flip pages and then draw to the offscreen one
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flip_pages:
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@ -155,7 +131,9 @@ done_page:
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sta draw_page_smc+1 ; DRAW_PAGE
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;===================================
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; plot current frame
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;===================================
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; scan whole 40x48 screen and plot each point based on
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; lookup table colors
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plot_frame:
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@ -178,7 +156,7 @@ plot_yloop:
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ldy #$0f ; setup mask for odd/even line
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bcc plot_mask
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bcc plot_mask ; set by the lsr
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ldy #$f0
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plot_mask:
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sty MASK
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@ -205,40 +183,35 @@ plot_xloop:
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tax
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plot_lookup:
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plot_lookup_smc:
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lda lookup,X ; load lookup, (y*16)+x
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cmp #11
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bcs color_notblue ; if < 11, blue
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color_blue:
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lda #$11 ; blue offset
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cmp #11
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bcc color_blue ; if < 11, blue
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color_notblue:
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tax
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lda colorlookup-11,X ; lookup color
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color_notblack:
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.byte $2C ; BIT trick
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color_blue:
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lda #$22 ; load color blue (skipped if bit trick)
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sta COLOR ; each nibble should be same
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jsr PLOT1 ; plot at GBASL,Y (x co-ord goes in Y)
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dey
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bpl plot_xloop
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dey ; XX--
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bpl plot_xloop ; loop if >=0
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pla
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pla ; restore YY
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tax
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dex ; YY--
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bpl plot_yloop ; loop if >=0
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dex
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bpl plot_yloop
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bmi forever_loop
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bmi cycle_colors ; move to next frame
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colorlookup:
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;.byte $22,$22,$22,$22,$22,$22,$22,$22
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;.byte $22,$22,$22,
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.byte $66,$77,$ff,$77,$66,$00,$22
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.byte $66,$77,$ff,$77,$66,$00
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; want this to be at 3f5
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