mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-12-22 12:30:01 +00:00
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
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//#link "common.c"
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#include "common.h"
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//#link "rasterirq.ca65"
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#include "rasterirq.h"
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//#link "sprites.c"
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#include "sprites.h"
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#include <cbm_petscii_charmap.h>
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#include <cc65.h>
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/*{w:24,h:21,bpp:1,brev:1}*/
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const char spriteshape[3*21] = {
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0x00,0x7F,0x00,0x01,0xFF,0xC0,0x03,0xFF,0xE0,
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0x03,0xE7,0xE0,0x07,0xD9,0xF0,0x07,0xDF,0xF0,
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0x07,0xD9,0xF0,0x03,0xE7,0xE0,0x03,0xFF,0xE0,
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0x03,0xFF,0xE0,0x02,0xFF,0xA0,0x01,0x7F,0x40,
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0x01,0x3E,0x40,0x00,0x9C,0x80,0x00,0x9C,0x80,
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0x00,0x49,0x00,0x00,0x49,0x00,0x00,0x3E,0x00,
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0x00,0x3E,0x00,0x00,0x3E,0x00,0x00,0x1C,0x00
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};
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void sprite_stretch() {
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// get current raster line
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asm("lda $d012");
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// sprite Y expand bits = 255
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asm("ldx #$ff");
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asm("stx $d017");
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// wait for next raster line
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asm("@loop:");
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asm("cmp $d012");
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asm("beq @loop");
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// sprite Y expand bits = 0
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asm("inx");
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asm("stx $d017");
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}
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void dlist_example(void) {
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// stretch for the next 40 lines
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while (VIC.rasterline != 160) {
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sprite_stretch();
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}
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VIC.spr0_y+=3;
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VIC.spr7_y-=2;
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DLIST_RESTART(8*15);
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}
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void main(void) {
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byte i;
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clrscr();
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VIC.bordercolor = 0;
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sprite_clear();
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sprite_set_shapes(spriteshape, 192, 1);
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sprshad.spr_exp_x = 0xff;
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for (i=0; i<8; i++) {
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sprshad.spr_color[i] = i|8;
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sprite_draw(i, i*38+24, 120-i, 192);
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}
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sprite_update(DEFAULT_SCREEN);
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DLIST_SETUP(dlist_example);
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while (1) {
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if (STICK_MOVED(READ_STICK(0))) break;
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}
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DLIST_DONE();
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}
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