#include "cat_api.h"
#include <time.h>

#define NS_PER_TICK 30000000

void bye(void)
{
	printf("bye!\n");
	exit(0);
}

void process_input(void)
{
	struct cat_event* e = cat_get_event();
	if (e == NULL) return;
	if (e->type == QUIT) bye();
	else if (e->type == KEYDOWN) printf("keypress! %c\n", e->key);
	else if (e->type == KEYUP) printf("key up! %c\n", e->key);
	else if (e->type == MOUSEMOVE) printf("mouse move! (%d, %d)\n", e->mousex, e->mousey);
	else if (e->type == MOUSEDOWN) printf("mouse down! %02x\n", e->mouse_button);
	else if (e->type == MOUSEUP) printf("mouse up! %02x\n", e->mouse_button);
}

static long last_sec = 0;
static long last_nsec = 0;

void tick(void)
{
	/* run every N milliseconds... nanoseconds? idk */
	struct timespec t;
	clock_gettime(CLOCK_REALTIME, &t);
	if (last_sec == 0) goto yes;
	else if ((t.tv_sec - last_sec) > 0) goto yes;
	else if ((t.tv_nsec - last_nsec) > NS_PER_TICK) goto yes;
	else return;
	yes:	last_sec = t.tv_sec;
		last_nsec = t.tv_nsec;
}

void game_loop(void)
{
	process_input();
	tick();
	cat_render();
}

int main(int argc, char** argv)
{
	cat_init();
	cat_create_window(1920, 1080);
	cat_fill(0, 1, 0, 0, screen_width - 1, screen_height - 1, 132, 155, 132);
	while (1) game_loop();
	return 0;
}