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#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <crt0.h>
#include "keyb.h"
#include "vga.h"
#include "data.h"
/* disable paging because our int handlers are written in C */
int _crt0_startup_flags = _CRT0_FLAG_LOCK_MEMORY;
int main(int argc, char *argv[])
{
keyb_init();
atexit(keyb_free);
/* set VGA 320x200, 256 col */
set_mode(0x13);
set_palette(binary_palette_start);
if (!open_framebuffer())
{
set_mode(3);
fprintf(stderr, "ERROR: failed to open the framebuffer\n");
return 1;
}
blit_erase(0);
wait_vsync();
blit_update();
uint8_t bg[24 * 24] = { 0 };
uint16_t x = 10, y = 10;
int8_t ix = 1, iy = 1;
uint8_t c = 0;
while (!keys[KEY_ESC])
{
// erase
blit(bg, x, y, 24, 24);
x += ix;
y += iy;
if (x >= 320 - 24 || x == 0)
{
ix *= -1;
c = (c + 1) % 15;
blit_erase(c);
memset(bg, c, 24 * 24);
}
if (y >= 200 - 24 || y == 0)
{
iy *= -1;
c = (c + 1) % 15;
blit_erase(c);
memset(bg, c, 24 * 24);
}
// draw
blit(binary_sprites_start, x, y, 24, 24);
wait_vsync();
blit_update();
}
set_mode(3);
close_framebuffer();
return 0;
}
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