mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-21 23:30:58 +00:00
136 lines
2.9 KiB
C
136 lines
2.9 KiB
C
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#include "common.h"
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//#link "common.c"
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#include "multisprite.h"
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//#link "multisprite.s"
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#include "rasterirq.h"
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//#link "rasterirq.s"
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#define NUM_TEST_SPRITES 24
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byte* sprite_bank = (byte*)DEFAULT_SCREEN + 0x3f8;
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/*{w:12,h:21,bpp:2,brev:1}*/
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const char SPRITEMC[3*21] = {
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0x00,0xAA,0x80,0x02,0xAA,0xA0,0x0A,0xAA,0xA8,
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0x0A,0xAE,0xA8,0x0A,0xBB,0xA8,0x0A,0xBA,0xA8,
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0x0A,0xBB,0xA8,0x0A,0xAE,0xA8,0x0A,0xAA,0xA8,
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0x09,0xAA,0x98,0x08,0x6A,0x48,0x08,0x1D,0x08,
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0x02,0x0C,0x20,0x02,0x0C,0x20,0x02,0x0C,0x20,
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0x00,0x8C,0x80,0x00,0x8C,0x80,0x00,0x55,0x40,
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0x00,0x77,0x40,0x00,0x5D,0x40,0x00,0x15,0x00
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};
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void sprite_shape(char* vicbank, byte index, const char* sprite_data) {
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memmove(vicbank + index*64, sprite_data, 64);
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}
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void setup_sprites() {
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byte i;
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sprite_shape((void*)0x0, 255, SPRITEMC);
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for (i=0; i<MAX_MSPRITES; i++) {
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msprite_order[i] = i;
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msprite_y[i] = 255;
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}
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for (i=0; i<NUM_TEST_SPRITES; i++) {
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int x = i*13+20;
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msprite_x_lo[i] = x;
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msprite_x_hi[i] = x>>8;
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msprite_y[i] = i*0+50;
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// msprite_flags[i] = 0;
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msprite_shape[i] = 255;
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msprite_color[i] = i|8;
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}
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}
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// constants for display list
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#define Y0 21
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#define Y1 35
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#define YS 42
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void display_list() {
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msprite_render_init();
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msprite_render_section();
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DLIST_NEXT(Y1+YS*1);
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msprite_render_section();
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DLIST_NEXT(Y1+YS*2);
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msprite_render_section();
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DLIST_NEXT(Y1+YS*3);
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msprite_render_section();
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DLIST_NEXT(Y1+YS*4);
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msprite_render_section();
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VIC.bordercolor = 3;
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msprite_sort();
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VIC.bordercolor = 4;
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msprite_add_velocity(NUM_TEST_SPRITES);
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VIC.bordercolor = 0;
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DLIST_RESTART(Y0);
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}
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void msprite_set_position(byte index, int x, byte y) {
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asm("sei");
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msprite_x_lo[index] = x;
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msprite_x_hi[index] = x >> 8;
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msprite_y[index] = y;
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asm("cli");
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}
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void msprite_add_position(byte index, byte dx, byte dy) {
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int x;
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x = msprite_x_lo[index] | msprite_x_hi[index]*256;
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x += dx;
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asm("sei");
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msprite_x_lo[index] = x;
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msprite_x_hi[index] = x >> 8;
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msprite_y[index] += dy;
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asm("cli");
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}
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void apply_gravity() {
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byte i;
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for (i=0; i<NUM_TEST_SPRITES; i++) {
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int xvel = msprite_xvel_lo[i] + msprite_xvel_hi[i]*256;
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int yvel = msprite_yvel_lo[i] + msprite_yvel_hi[i]*256;
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int xpos = msprite_x_lo[i] + msprite_x_hi[i]*256;
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int ypos = msprite_y[i];
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xpos -= 172;
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ypos -= 145;
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xvel -= xpos / 8;
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yvel -= ypos / 8;
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msprite_xvel_lo[i] = xvel;
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msprite_xvel_hi[i] = xvel >> 8;
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msprite_yvel_lo[i] = yvel;
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msprite_yvel_hi[i] = yvel >> 8;
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}
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}
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void do_test() {
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byte i;
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raster_wait(160);
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for (i=0; i<NUM_TEST_SPRITES; i++) {
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msprite_yvel_lo[i] = i*8;
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//msprite_add_position(i,i&3,i&3);
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}
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}
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void main() {
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clrscr();
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setup_sprites();
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// set colors
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VIC.spr_mcolor = 0xff;
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VIC.spr_mcolor0 = 4;
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VIC.spr_mcolor1 = 7;
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DLIST_SETUP(display_list);
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while (1) {
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do_test();
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}
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}
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