110 lines
1.5 KiB
C
110 lines
1.5 KiB
C
#include "input.h"
|
|
|
|
#include <assert.h>
|
|
#include <fcntl.h>
|
|
#include <linux/input.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
enum {
|
|
RELEASE = 0,
|
|
PRESS = 1,
|
|
REPEAT = 2,
|
|
};
|
|
|
|
input_state_t input;
|
|
|
|
static int input_fd;
|
|
static input_callback_t shoot;
|
|
|
|
static void key_press(int key)
|
|
{
|
|
switch (key) {
|
|
case KEY_Q:
|
|
input.quit = true;
|
|
break;
|
|
|
|
case KEY_UP:
|
|
++input.thrust;
|
|
break;
|
|
|
|
case KEY_LEFT:
|
|
++input.spin;
|
|
break;
|
|
case KEY_RIGHT:
|
|
--input.spin;
|
|
break;
|
|
|
|
case KEY_SPACE:
|
|
if (shoot != nullptr)
|
|
shoot();
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void key_release(int key)
|
|
{
|
|
switch (key) {
|
|
case KEY_UP:
|
|
--input.thrust;
|
|
break;
|
|
|
|
case KEY_LEFT:
|
|
--input.spin;
|
|
break;
|
|
case KEY_RIGHT:
|
|
++input.spin;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void key_repeat(int key)
|
|
{
|
|
if (key == KEY_SPACE && shoot != nullptr)
|
|
shoot();
|
|
}
|
|
|
|
int input_init()
|
|
{
|
|
memset(&input, 0, sizeof(input));
|
|
shoot = nullptr;
|
|
|
|
input_fd = open("/dev/input/event0", O_RDONLY);
|
|
assert(input_fd != -1);
|
|
const int res = ioctl(input_fd, EVIOCGRAB, (void *)1);
|
|
assert(res != -1);
|
|
|
|
return input_fd;
|
|
}
|
|
|
|
void input_cleanup()
|
|
{
|
|
ioctl(input_fd, EVIOCGRAB, (void *)0);
|
|
close(input_fd);
|
|
}
|
|
|
|
void input_on_shoot(input_callback_t cb)
|
|
{
|
|
shoot = cb;
|
|
}
|
|
|
|
void input_handle()
|
|
{
|
|
struct input_event ev;
|
|
const int len = read(input_fd, &ev, sizeof(ev));
|
|
assert(len == sizeof(ev));
|
|
if (ev.type == EV_KEY) {
|
|
switch (ev.value) {
|
|
case PRESS:
|
|
key_press(ev.code);
|
|
break;
|
|
case RELEASE:
|
|
key_release(ev.code);
|
|
break;
|
|
case REPEAT:
|
|
key_repeat(ev.code);
|
|
break;
|
|
}
|
|
}
|
|
}
|