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#include "teensy_context.h"
#include "teensy_renderer.h"
#include <math.h>
#include <time.h>
#include "teensy_platform.h"
struct ty_ctx ctx;
extern struct ty_renderer r;
bool is_init(void)
{
int scr_size = ctx.hints.scr_width * ctx.hints.scr_height;
return scr_size > 0;
}
void ty_init(struct ty_hints hints)
{
ty_init_mem();
ctx.hints = hints;
ctx.ticrate = 1.0 / hints.ticrate;
ctx.prev_tic_ts = 0;
ty_platform_init(&ctx);
ty_init_renderer();
}
void ty_deinit(void)
{
assert(is_init());
ty_platform_deinit();
ty_deinit_renderer();
ty_deinit_mem();
}
bool ty_button_down(enum ty_button btn)
{
assert(btn >= 0 && btn < TY_BTN_COUNT);
return ctx.down[btn];
}
bool ty_button_pressed(enum ty_button btn)
{
assert(btn >= 0 && btn < TY_BTN_COUNT);
return ctx.pressed[btn];
}
bool ty_is_game_running(void)
{
assert(is_init());
return !ty_platform_os_wants_quit();
}
double ty_get_time(void)
{
assert(is_init());
return ty_platform_get_time();
}
static
void update_buttons(void)
{
for (int btn = 0; btn < TY_BTN_COUNT; btn++) {
bool down = ty_platform_is_button_down(btn);
ctx.pressed[btn] = down && !ctx.down[btn];
ctx.down[btn] = down;
}
}
int ty_tick(void)
{
assert(is_init());
double current_time = ty_get_time();
double time_since_tic = current_time - ctx.prev_tic_ts;
int tics = time_since_tic / ctx.ticrate;
if (tics > 0) {
update_buttons();
ctx.prev_tic_ts = current_time;
ty_platform_frame(r.screen);
}
return tics;
}
// TODO: Find a better place for this
void ty_sleep(uint64_t ms)
{
assert(is_init());
struct timespec ts;
ts.tv_sec = ms / 1000;
ts.tv_nsec = (ms % 1000) * 1000000;
nanosleep(&ts, NULL);
}
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