plamsa: more work
This commit is contained in:
Vince Weaver
parent
c9b19346eb
commit
f4879d9121
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@ -9,7 +9,8 @@ all: plasma.dsk
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plasma.dsk: HELLO PLASMA PLASMA2 \
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DIAMONDS STATIC STATIC_BOT \
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PLASMA_128 PLASMA_TINY PLASMA_BOT WIRES WIRES_BOT
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PLASMA_128 PLASMA_TINY PLASMA_BOT WIRES WIRES_BOT \
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SMALLCIRCS STAR OVAL
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cp $(EMPTYDISK) plasma.dsk
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$(DOS33) -y plasma.dsk SAVE A HELLO
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$(DOS33) -y plasma.dsk BSAVE -a 0x70 PLASMA
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@ -22,6 +23,9 @@ plasma.dsk: HELLO PLASMA PLASMA2 \
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$(DOS33) -y plasma.dsk BSAVE -a 0xc00 DIAMONDS
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$(DOS33) -y plasma.dsk BSAVE -a 0xc00 STATIC
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$(DOS33) -y plasma.dsk BSAVE -a 0x384 STATIC_BOT
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$(DOS33) -y plasma.dsk BSAVE -a 0xc00 SMALLCIRCS
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$(DOS33) -y plasma.dsk BSAVE -a 0xc00 STAR
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$(DOS33) -y plasma.dsk BSAVE -a 0xc00 OVAL
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###
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@ -44,6 +48,33 @@ PLASMA2: plasma2.o
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plasma2.o: plasma2.s
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ca65 -o plasma2.o plasma2.s -l plasma2.lst
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###
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SMALLCIRCS: smallcircs.o
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ld65 -o SMALLCIRCS smallcircs.o -C $(LINKERSCRIPTS)/apple2_c00.inc
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smallcircs.o: smallcircs.s
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ca65 -o smallcircs.o smallcircs.s -l smallcircs.lst
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###
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STAR: star.o
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ld65 -o STAR star.o -C $(LINKERSCRIPTS)/apple2_c00.inc
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star.o: star.s
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ca65 -o star.o star.s -l star.lst
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###
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OVAL: oval.o
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ld65 -o OVAL oval.o -C $(LINKERSCRIPTS)/apple2_c00.inc
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oval.o: oval.s
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ca65 -o oval.o oval.s -l oval.lst
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###
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DIAMONDS: diamonds.o
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@ -7,7 +7,9 @@ int main(int argc, char **argv) {
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double d;
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int i,r;
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unsigned char c;
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#if 0
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for(i=0;i<16;i++) {
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d=(((double)i)*2.0*PI)/16.0;
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@ -17,6 +19,20 @@ int main(int argc, char **argv) {
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printf("%i, %02X\n",i,r);
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}
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#endif
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for(i=0;i<64;i++) {
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d=(((double)i)*2.0*PI)/64.0;
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r=32*sin(d);
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c=r;
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printf("$%02X,",c);
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}
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printf("\n");
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return 0;
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}
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@ -0,0 +1,169 @@
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; Ovals
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; zero page
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GBASL = $26
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GBASH = $27
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MASK = $2E
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COLOR = $30
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;CTEMP = $68
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YY = $69
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FRAME = $FC
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SUM = $FD
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SAVEX = $FE
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SAVEY = $FF
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; soft-switches
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FULLGR = $C052
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PAGE1 = $C054
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; ROM routines
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PLOT = $F800 ;; PLOT AT Y,A
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PLOT1 = $F80E ;; PLOT at (GBASL),Y (need MASK to be $0f or $f0)
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GBASCALC= $F847 ;; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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SETCOL = $F864 ;; COLOR=A*17
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SETGR = $FB40
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;================================
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; Clear screen and setup graphics
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;================================
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oval:
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jsr SETGR ; set lo-res 40x40 mode
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bit FULLGR ; make it 40x48
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draw_oval:
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inc FRAME
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ldx #47 ; YY
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create_yloop:
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ldy #39
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txa
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jsr PLOT ; (Y,A) sets GBASL/GBASH, Y
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create_xloop:
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; lda #128
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lda FRAME
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sta SUM
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tya ; XX
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jsr calcsine_div2
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txa ; YY
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jsr calcsine
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; X (YY) is in SAVEX
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clc
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; sty SAVEY ; XX
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tya
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adc SAVEX ; XX + YY
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jsr calcsine_div2
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; clc
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; adc FRAME
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lsr ; double colors
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and #$7 ; mask
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tax
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lda colorlookup,X
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jsr SETCOL
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jsr PLOT1 ; PLOT (GBASL),Y
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ldx SAVEX
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dey
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bpl create_xloop
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dex
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bpl create_yloop
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; X and Y both $FF
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bmi draw_oval
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calcsine_div2:
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lsr
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calcsine:
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stx SAVEX
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and #$3f
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tax
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rol
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rol
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rol
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bcc sinadd
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sinsub:
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lda #0
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lda SUM
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; sec
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sbc sinetable-32,X
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jmp sindone
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sinadd:
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lda SUM
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; clc
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adc sinetable,X
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sindone:
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sta SUM
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ldx SAVEX
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rts
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colorlookup:
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; blue
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;.byte $55,$77,$ff,$77,$66,$22,$55 ; use 00 from sinetable
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;.byte $00
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; pink
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.byte $55,$11,$33,$bb,$ff,$bb,$55
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;.byte $00
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; green
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;.byte $55,$44,$cc,$ff,$cc,$44,$55 ; use 00 from sinetable
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;.byte $00
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; orange
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;.byte $99,$88,$ff,$44,$cc,$ff,$55 ; use 00 from sinetable
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;.byte $00
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;.byte $00,$00,$55,$55,$77,$77,$ff,$ff
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;.byte $77,$77,$66,$66,$22,$22,$55,$55
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sinetable:
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; this is actually (32*sin(x))
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.byte $00,$03,$06,$09,$0C,$0F,$11,$14
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.byte $16,$18,$1A,$1C,$1D,$1E,$1F,$1F
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.byte $20,$1F,$1F,$1E,$1D,$1C,$1A,$18
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.byte $16,$14,$11,$0F,$0C,$09,$06,$03
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;.byte $00,$FD,$FA,$F7,$F4,$F1,$EF,$EC
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;.byte $EA,$E8,$E6,$E4,$E3,$E2,$E1,$E1
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;.byte $E0,$E1,$E1,$E2,$E3,$E4,$E6,$E8
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;.byte $EA,$EC,$EF,$F1,$F4,$F7,$FA,$FD
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;.byte $00,$06,$0C,$11,$16,$1A,$1D,$1F
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;.byte $20,$1F,$1D,$1A,$16,$11,$0C,$06
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;.byte $00,$FA,$F4,$EF,$EA,$E6,$E3,$E1
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;.byte $E0,$E1,$E3,$E6,$EA,$EF,$F4,$FA
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;.byte $00,$0C,$16,$1D
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;.byte $20,$1D,$16,$0C
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;.byte $00,$F4,$EA,$E3
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;.byte $E0,$E3,$EA,$F4
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@ -37,50 +37,61 @@ plasma:
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jsr SETGR ; set lo-res 40x40 mode
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bit FULLGR ; make it 40x48
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draw_plasma:
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ldx #39
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; lda #$0f
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; sta MASK
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ldx #47 ; YY
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create_yloop:
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ldy #47
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; lda MASK
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; eor #$FF
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; sta MASK
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; txa
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; lsr
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; jsr GBASCALC ; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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ldy #0
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txa
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jsr PLOT ; (Y,A) sets GBASL/GBASH, Y
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ldy #39
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create_xloop:
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lda #128
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sta SUM
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txa
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adc FRAME
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jsr calcsine
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tya
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; adc FRAME
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jsr calcsine_div_2
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tya ; XX
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jsr calcsine_div2
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txa ; YY
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jsr calcsine
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clc
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stx SAVEX
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tya
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adc SAVEX
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jsr calcsine
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sty SAVEY ; XX
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txa
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adc SAVEY ; XX + YY
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jsr calcsine_div2
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stx SAVEX
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sty SAVEY
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; clc
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clc
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adc FRAME
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lsr
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and #$7
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tax
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lda colorlookup,X
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jsr SETCOL
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ldy SAVEY
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lda SAVEX
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ldy SAVEX
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lda SAVEY
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jsr PLOT ; PLOT Y,A
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jsr PLOT1 ; PLOT (GBASL),Y
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ldx SAVEX
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ldy SAVEY
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dey
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bpl create_xloop
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@ -208,20 +219,39 @@ frame_smc:
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.endif
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calcsine_div_8:
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lsr
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calcsine_div_4:
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lsr
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calcsine_div_2:
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;calcsine_div8:
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; lsr
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;calcsine_div4:
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; lsr
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calcsine_div2:
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lsr
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calcsine:
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stx SAVEX
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and #$f
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and #$3f
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tax
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lda sinetable,X
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clc
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adc SUM
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rol
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rol
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rol
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bcc sinadd
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sinsub:
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lda #0
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lda SUM
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; sec
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sbc sinetable-32,X
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jmp sindone
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sinadd:
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lda SUM
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; clc
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adc sinetable,X
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sindone:
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sta SUM
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ldx SAVEX
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rts
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@ -229,14 +259,34 @@ calcsine:
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colorlookup:
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; blue
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.byte $55,$22,$66,$77,$ff,$77,$55,$00
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;.byte $55,$22,$66,$77,$ff,$77,$55,$00
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.byte $00,$55,$77,$ff,$77,$66,$22,$55
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;.byte $00,$00,$55,$55,$77,$77,$ff,$ff
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;.byte $77,$77,$66,$66,$22,$22,$55,$55
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sinetable:
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; this is actually (32*sin(x))
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.byte $00,$0C,$16,$1D
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.byte $20,$1D,$16,$0C
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.byte $00,$F4,$EA,$E3
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.byte $E0,$E3,$EA,$F4
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.byte $00,$03,$06,$09,$0C,$0F,$11,$14
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.byte $16,$18,$1A,$1C,$1D,$1E,$1F,$1F
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.byte $20,$1F,$1F,$1E,$1D,$1C,$1A,$18
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.byte $16,$14,$11,$0F,$0C,$09,$06,$03
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;.byte $00,$FD,$FA,$F7,$F4,$F1,$EF,$EC
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;.byte $EA,$E8,$E6,$E4,$E3,$E2,$E1,$E1
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;.byte $E0,$E1,$E1,$E2,$E3,$E4,$E6,$E8
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;.byte $EA,$EC,$EF,$F1,$F4,$F7,$FA,$FD
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;.byte $00,$06,$0C,$11,$16,$1A,$1D,$1F
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;.byte $20,$1F,$1D,$1A,$16,$11,$0C,$06
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;.byte $00,$FA,$F4,$EF,$EA,$E6,$E3,$E1
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;.byte $E0,$E1,$E3,$E6,$EA,$EF,$F4,$FA
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;.byte $00,$0C,$16,$1D
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;.byte $20,$1D,$16,$0C
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;.byte $00,$F4,$EA,$E3
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;.byte $E0,$E3,$EA,$F4
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@ -0,0 +1,254 @@
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; more plasma
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; by Vince `deater` Weaver (vince@deater.net) / dSr
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; with some help from qkumba
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; zero page
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GBASL = $26
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GBASH = $27
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MASK = $2E
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COLOR = $30
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;CTEMP = $68
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YY = $69
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FRAME = $FC
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SUM = $FD
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SAVEX = $FE
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SAVEY = $FF
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; soft-switches
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FULLGR = $C052
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PAGE1 = $C054
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; ROM routines
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PLOT = $F800 ;; PLOT AT Y,A
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PLOT1 = $F80E ;; PLOT at (GBASL),Y (need MASK to be $0f or $f0)
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GBASCALC= $F847 ;; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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SETCOL = $F864 ;; COLOR=A*17
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SETGR = $FB40
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;================================
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; Clear screen and setup graphics
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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 FULLGR ; make it 40x48
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draw_plasma:
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lda #$0f
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sta MASK
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ldx #47 ; YY
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create_yloop:
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lda MASK
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eor #$FF
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sta MASK
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txa
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lsr
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jsr GBASCALC ; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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ldy #39
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create_xloop:
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lda #128
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sta SUM
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tya ; XX
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jsr calcsine
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txa ; YY
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jsr calcsine
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clc
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sty SAVEY ; XX
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txa
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adc SAVEY ; XX + YY
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jsr calcsine
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clc
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adc FRAME
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and #$7
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tax
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lda colorlookup,X
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jsr SETCOL
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ldy SAVEY
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lda SAVEX
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jsr PLOT1 ; PLOT (GBASL),Y
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ldx SAVEX
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dey
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bpl create_xloop
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dex
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bpl create_yloop
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; X and Y both $FF
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create_lookup_done:
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forever_loop:
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inc FRAME
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jmp draw_plasma
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; jmp forever_loop
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.if 0
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cycle_colors:
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; cycle colors
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; instead of advancing entire frame, do slightly slower route
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; instead now and just incrememnting the frame and doing the
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; adjustment at plot time.
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; increment frame
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inc frame_smc+1
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; set/flip pages
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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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; ldy #0
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; iny ; y is $FF, make it 0
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lda draw_page_smc+1 ; DRAW_PAGE
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bne done_page
|
||||
dey
|
||||
done_page:
|
||||
; ldx PAGE1,Y ; set display page to PAGE1 or PAGE2
|
||||
|
||||
ldx $BF56,Y ; PAGE1 - $FF
|
||||
|
||||
eor #$4 ; flip draw page between $400/$800
|
||||
sta draw_page_smc+1 ; DRAW_PAGE
|
||||
|
||||
|
||||
; plot current frame
|
||||
; scan whole 40x48 screen and plot each point based on
|
||||
; lookup table colors
|
||||
plot_frame:
|
||||
|
||||
ldx #47 ; YY=47 (count backwards)
|
||||
plot_yloop:
|
||||
|
||||
txa ; get YY into A
|
||||
pha ; save X for later
|
||||
lsr ; call actually wants Ycoord/2
|
||||
|
||||
php ; save C flag for mask handling
|
||||
|
||||
; ugh can't use PLOT trick as it always will draw something
|
||||
; to PAGE1 even if we don't want to
|
||||
|
||||
jsr GBASCALC ; point GBASL/H to address in (A is ycoord/2)
|
||||
; after, A is GBASL, C is clear
|
||||
|
||||
lda GBASH ; adjust to be PAGE1/PAGE2 ($400 or $800)
|
||||
draw_page_smc:
|
||||
adc #0
|
||||
sta GBASH
|
||||
|
||||
; increment YY in top nibble of lookup for (yy<<16)+xx
|
||||
; clc from above, C always 0
|
||||
lda plot_lookup_smc+1
|
||||
adc #$10 ; no need to mask as it will oflo and be ignored
|
||||
sta plot_lookup_smc+1
|
||||
|
||||
;==========
|
||||
|
||||
ldy #39 ; XX = 39 (countdown)
|
||||
|
||||
; sets MASK by calling into middle of PLOT routine
|
||||
; by Y being 39 draw in a spot that gets over-written
|
||||
|
||||
plp
|
||||
jsr $f806
|
||||
|
||||
plot_xloop:
|
||||
|
||||
tya ; get XX & 0x0f
|
||||
and #$f
|
||||
tax
|
||||
|
||||
plot_lookup_smc:
|
||||
lda lookup,X ; load lookup, (YY*16)+XX
|
||||
|
||||
clc
|
||||
frame_smc:
|
||||
adc #$00 ; add in frame
|
||||
|
||||
and #$f
|
||||
lsr ; we actually only have 8 colors
|
||||
|
||||
tax
|
||||
|
||||
lda colorlookup,X ; lookup color
|
||||
|
||||
|
||||
sta COLOR ; each nibble should be same
|
||||
|
||||
jsr PLOT1 ; plot at GBASL,Y (x co-ord goes in Y)
|
||||
|
||||
dey
|
||||
bpl plot_xloop
|
||||
|
||||
pla ; restore YY
|
||||
tax
|
||||
dex
|
||||
bpl plot_yloop
|
||||
bmi forever_loop
|
||||
.endif
|
||||
|
||||
|
||||
;calcsine_div_8:
|
||||
; lsr
|
||||
;calcsine_div_4:
|
||||
; lsr
|
||||
;calcsine_div_2:
|
||||
; lsr
|
||||
calcsine:
|
||||
asl
|
||||
stx SAVEX
|
||||
and #$f
|
||||
tax
|
||||
lda sinetable,X
|
||||
clc
|
||||
adc SUM
|
||||
sta SUM
|
||||
ldx SAVEX
|
||||
rts
|
||||
|
||||
|
||||
colorlookup:
|
||||
|
||||
; blue
|
||||
.byte $55,$22,$66,$77,$ff,$77,$55,$00
|
||||
|
||||
|
||||
|
||||
sinetable:
|
||||
; this is actually (32*sin(x))
|
||||
.byte $00,$06,$0C,$11,$16,$1A,$1D,$1F
|
||||
.byte $20,$1F,$1D,$1A,$16,$11,$0C,$06
|
||||
;.byte $00,$FA,$F4,$EF,$EA,$E6,$E3,$E1
|
||||
;.byte $E0,$E1,$E3,$E6,$EA,$EF,$F4,$FA
|
||||
|
||||
;.byte $00,$0C,$16,$1D
|
||||
;.byte $20,$1D,$16,$0C
|
||||
;.byte $00,$F4,$EA,$E3
|
||||
;.byte $E0,$E3,$EA,$F4
|
||||
|
||||
|
|
@ -0,0 +1,259 @@
|
|||
; more plasma
|
||||
|
||||
; by Vince `deater` Weaver (vince@deater.net) / dSr
|
||||
; with some help from qkumba
|
||||
|
||||
; zero page
|
||||
GBASL = $26
|
||||
GBASH = $27
|
||||
MASK = $2E
|
||||
COLOR = $30
|
||||
;CTEMP = $68
|
||||
YY = $69
|
||||
|
||||
FRAME = $FC
|
||||
SUM = $FD
|
||||
SAVEX = $FE
|
||||
SAVEY = $FF
|
||||
|
||||
; soft-switches
|
||||
FULLGR = $C052
|
||||
PAGE1 = $C054
|
||||
|
||||
; ROM routines
|
||||
PLOT = $F800 ;; PLOT AT Y,A
|
||||
PLOT1 = $F80E ;; PLOT at (GBASL),Y (need MASK to be $0f or $f0)
|
||||
GBASCALC= $F847 ;; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
|
||||
SETCOL = $F864 ;; COLOR=A*17
|
||||
SETGR = $FB40
|
||||
|
||||
|
||||
|
||||
;================================
|
||||
; Clear screen and setup graphics
|
||||
;================================
|
||||
plasma:
|
||||
|
||||
jsr SETGR ; set lo-res 40x40 mode
|
||||
bit FULLGR ; make it 40x48
|
||||
|
||||
draw_plasma:
|
||||
|
||||
lda #$0f
|
||||
sta MASK
|
||||
|
||||
ldx #47 ; YY
|
||||
create_yloop:
|
||||
|
||||
lda MASK
|
||||
eor #$FF
|
||||
sta MASK
|
||||
|
||||
txa
|
||||
lsr
|
||||
jsr GBASCALC ; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
|
||||
|
||||
ldy #39
|
||||
|
||||
create_xloop:
|
||||
|
||||
lda #128
|
||||
sta SUM
|
||||
|
||||
tya ; XX
|
||||
jsr calcsine
|
||||
|
||||
txa ; YY
|
||||
jsr calcsine
|
||||
|
||||
clc
|
||||
sty SAVEY ; XX
|
||||
txa
|
||||
adc SAVEY ; XX + YY
|
||||
jsr calcsine
|
||||
|
||||
clc
|
||||
adc FRAME
|
||||
|
||||
lsr
|
||||
and #$7
|
||||
tax
|
||||
lda colorlookup,X
|
||||
|
||||
jsr SETCOL
|
||||
|
||||
ldy SAVEY
|
||||
lda SAVEX
|
||||
|
||||
jsr PLOT1 ; PLOT (GBASL),Y
|
||||
|
||||
ldx SAVEX
|
||||
|
||||
dey
|
||||
bpl create_xloop
|
||||
|
||||
dex
|
||||
bpl create_yloop
|
||||
|
||||
; X and Y both $FF
|
||||
|
||||
create_lookup_done:
|
||||
|
||||
forever_loop:
|
||||
inc FRAME
|
||||
|
||||
jmp draw_plasma
|
||||
; jmp forever_loop
|
||||
|
||||
.if 0
|
||||
cycle_colors:
|
||||
|
||||
; cycle colors
|
||||
; instead of advancing entire frame, do slightly slower route
|
||||
; instead now and just incrememnting the frame and doing the
|
||||
; adjustment at plot time.
|
||||
|
||||
; increment frame
|
||||
|
||||
inc frame_smc+1
|
||||
|
||||
; set/flip pages
|
||||
; we want to flip pages and then draw to the offscreen one
|
||||
|
||||
flip_pages:
|
||||
|
||||
; ldy #0
|
||||
|
||||
; iny ; y is $FF, make it 0
|
||||
|
||||
lda draw_page_smc+1 ; DRAW_PAGE
|
||||
bne done_page
|
||||
dey
|
||||
done_page:
|
||||
; ldx PAGE1,Y ; set display page to PAGE1 or PAGE2
|
||||
|
||||
ldx $BF56,Y ; PAGE1 - $FF
|
||||
|
||||
eor #$4 ; flip draw page between $400/$800
|
||||
sta draw_page_smc+1 ; DRAW_PAGE
|
||||
|
||||
|
||||
; plot current frame
|
||||
; scan whole 40x48 screen and plot each point based on
|
||||
; lookup table colors
|
||||
plot_frame:
|
||||
|
||||
ldx #47 ; YY=47 (count backwards)
|
||||
plot_yloop:
|
||||
|
||||
txa ; get YY into A
|
||||
pha ; save X for later
|
||||
lsr ; call actually wants Ycoord/2
|
||||
|
||||
php ; save C flag for mask handling
|
||||
|
||||
; ugh can't use PLOT trick as it always will draw something
|
||||
; to PAGE1 even if we don't want to
|
||||
|
||||
jsr GBASCALC ; point GBASL/H to address in (A is ycoord/2)
|
||||
; after, A is GBASL, C is clear
|
||||
|
||||
lda GBASH ; adjust to be PAGE1/PAGE2 ($400 or $800)
|
||||
draw_page_smc:
|
||||
adc #0
|
||||
sta GBASH
|
||||
|
||||
; increment YY in top nibble of lookup for (yy<<16)+xx
|
||||
; clc from above, C always 0
|
||||
lda plot_lookup_smc+1
|
||||
adc #$10 ; no need to mask as it will oflo and be ignored
|
||||
sta plot_lookup_smc+1
|
||||
|
||||
;==========
|
||||
|
||||
ldy #39 ; XX = 39 (countdown)
|
||||
|
||||
; sets MASK by calling into middle of PLOT routine
|
||||
; by Y being 39 draw in a spot that gets over-written
|
||||
|
||||
plp
|
||||
jsr $f806
|
||||
|
||||
plot_xloop:
|
||||
|
||||
tya ; get XX & 0x0f
|
||||
and #$f
|
||||
tax
|
||||
|
||||
plot_lookup_smc:
|
||||
lda lookup,X ; load lookup, (YY*16)+XX
|
||||
|
||||
clc
|
||||
frame_smc:
|
||||
adc #$00 ; add in frame
|
||||
|
||||
and #$f
|
||||
lsr ; we actually only have 8 colors
|
||||
|
||||
tax
|
||||
|
||||
lda colorlookup,X ; lookup color
|
||||
|
||||
|
||||
sta COLOR ; each nibble should be same
|
||||
|
||||
jsr PLOT1 ; plot at GBASL,Y (x co-ord goes in Y)
|
||||
|
||||
dey
|
||||
bpl plot_xloop
|
||||
|
||||
pla ; restore YY
|
||||
tax
|
||||
dex
|
||||
bpl plot_yloop
|
||||
bmi forever_loop
|
||||
.endif
|
||||
|
||||
|
||||
;calcsine_div_8:
|
||||
; lsr
|
||||
;calcsine_div_4:
|
||||
; lsr
|
||||
;calcsine_div_2:
|
||||
; lsr
|
||||
calcsine:
|
||||
; asl
|
||||
stx SAVEX
|
||||
and #$1f
|
||||
tax
|
||||
lda sinetable,X
|
||||
clc
|
||||
adc SUM
|
||||
sta SUM
|
||||
ldx SAVEX
|
||||
rts
|
||||
|
||||
|
||||
colorlookup:
|
||||
|
||||
; blue
|
||||
;.byte $55,$22,$66,$77,$ff,$77,$55,$00
|
||||
|
||||
.byte $00,$55,$77,$ff,$77,$66,$22,$55
|
||||
|
||||
;.byte $00,$00,$55,$55,$77,$77,$ff,$ff
|
||||
;.byte $77,$77,$66,$66,$22,$22,$55,$55
|
||||
|
||||
|
||||
sinetable:
|
||||
; this is actually (32*sin(x))
|
||||
.byte $00,$06,$0C,$11,$16,$1A,$1D,$1F
|
||||
.byte $20,$1F,$1D,$1A,$16,$11,$0C,$06
|
||||
.byte $00,$FA,$F4,$EF,$EA,$E6,$E3,$E1
|
||||
.byte $E0,$E1,$E3,$E6,$EA,$EF,$F4,$FA
|
||||
|
||||
;.byte $00,$0C,$16,$1D
|
||||
;.byte $20,$1D,$16,$0C
|
||||
;.byte $00,$F4,$EA,$E3
|
||||
;.byte $E0,$E3,$EA,$F4
|
||||
|
||||
|
|
@ -13,6 +13,8 @@
|
|||
#define PI 3.14159265358979323846264338327950
|
||||
|
||||
|
||||
int sine_lookup[64];
|
||||
|
||||
#if 1
|
||||
static unsigned char color_lookup[]={0x0, 0x0, 0x5, 0x5,
|
||||
0x7, 0x7, 0xf, 0xf,
|
||||
|
|
@ -27,7 +29,7 @@ static unsigned char color_lookup[]={0x0, 0x5, 0x7, 0xf,
|
|||
|
||||
#endif
|
||||
|
||||
static int offscreen[40][40];
|
||||
static int offscreen[40][48];
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
|
||||
|
|
@ -42,7 +44,13 @@ int main(int argc, char **argv) {
|
|||
|
||||
ram[DRAW_PAGE]=0x0;
|
||||
|
||||
for(yy=0;yy<40;yy++) {
|
||||
for(xx=0;xx<64;xx++) {
|
||||
|
||||
sine_lookup[xx]=32.0*sin( (xx*2*PI)/64);
|
||||
|
||||
}
|
||||
|
||||
for(yy=0;yy<48;yy++) {
|
||||
for(xx=0;xx<40;xx++) {
|
||||
|
||||
// col = ( 32.0 + (32.0 * sin(xx / 4.0))
|
||||
|
|
@ -75,13 +83,20 @@ int main(int argc, char **argv) {
|
|||
sin(xx/16.0), sin(yy/8.0), sin((xx+yy)/16.0));
|
||||
//#endif
|
||||
#else
|
||||
// col = (int)
|
||||
// ( 128.0 + 32*sin(xx / 16.0)
|
||||
// + 32*sin(yy / 8.0)
|
||||
// + 32*sin((xx + yy) / 16.0)
|
||||
// ) ;
|
||||
|
||||
|
||||
col = (int)
|
||||
(
|
||||
128.0 + 32*sin(xx / 16.0)
|
||||
+ 32*sin(yy / 8.0)
|
||||
+ 32*sin((xx + yy) / 16.0)
|
||||
( 128.0 + sine_lookup[ (int)(xx/2)&0x3f ]
|
||||
+ sine_lookup[ (int)(yy/1)&0x3f ]
|
||||
+ sine_lookup[ (int)((xx + yy)/2)&0x3f ]
|
||||
) ;
|
||||
|
||||
|
||||
printf("%d %d %d %.2f %.2f %.2f\n",xx,yy,col,
|
||||
sin(xx/16.0), sin(yy/8.0), sin((xx+yy)/16.0));
|
||||
#endif
|
||||
|
|
@ -93,7 +108,7 @@ int main(int argc, char **argv) {
|
|||
}
|
||||
|
||||
while(1) {
|
||||
for(yy=0;yy<40;yy++) {
|
||||
for(yy=0;yy<48;yy++) {
|
||||
for(xx=0;xx<40;xx++) {
|
||||
col=offscreen[xx][yy];
|
||||
color_equals(color_lookup[col]);
|
||||
|
|
|
|||
Loading…
Reference in New Issue