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
|
#include <string.h>
#include "common.h"
#include "gba-buttons.c"
#include "background-tiles.c"
#include "sprites.h"
#include "text.h"
//
// Main functions.
//
// TODO: Cleanup OBJ/OAM memory copying and access.
//
//
// BIOS calls
//
int bios_vblank_wait();
int bios_div(int num, int denom);
int hblank_counter = 0;
void
irs_hblank_func() {
hblank_counter++;
if (DISP_VCOUNT >= 160) {
PAL_BUFFER_BG[0] = rgb15(0, 0, 0);
} else {
u16 clr = (DISP_VCOUNT / 8);
PAL_BUFFER_BG[0] = rgb15(clr, 0, 31 - clr);
}
}
int main(void) {
// Configure the display in mode 0 to show OBJs, where tile memory is
// sequential.
DISP_CTRL = DISP_ENABLE_SPRITES | DISP_MODE_0 | DISP_BG_0;
// Initialize sprite button overlay.
init_sprite_pal(0, COLOR_WHITE);
init_sprites(0);
init_button_sprites();
// Initialize text engine.
txt_init(0, COLOR_RED, 0);
// Register interrupts.
irq_init();
irs_set(IRQ_VBLANK, irq_stub);
irs_set(IRQ_HBLANK, irs_hblank_func);
int frame_counter = 0;
while(true) {
bios_vblank_wait();
poll_keys();
txt_position(0, 1);
txt_clear_line();
txt_printf(" HBlank counter: %d\n", hblank_counter);
txt_clear_line();
txt_printf(" Frame counter: %d\n", frame_counter);
frame_counter++;
update_button_sprites();
};
return 0;
}
|
