1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <crt0.h>
#include "keyb.h"
#include "timer.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;
void free_all()
{
timer_free();
keyb_free();
}
int main(int argc, char *argv[])
{
timer_init();
keyb_init();
atexit(free_all);
/* 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);
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();
//timer_wait(1);
}
set_mode(3);
close_framebuffer();
return 0;
}
|
