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#include <stdio.h>
#include <SDL.h>
#include "controller.h"
static int run(int joystick_id, int timeout, bool debug);
static void print_channels(channel_t* channels, bool debug);
int main(int argc, char *argv[]) {
//initialize joystick library
if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0) {
fprintf(stderr, "Couldn't initialize SDL joystick subsystem: %s\n", SDL_GetError());
exit(1);
}
run(0, 500, true);
return 0;
}
static int run(int joystick_id, int timeout, bool debug) {
channel_t channels[CHANNELS];
channel_reset(channels);
//pointer to joystick in use
SDL_Joystick* joystick = NULL;
//event loop
SDL_Event e;
bool cont = true;
while (cont) {
if(SDL_WaitEventTimeout(&e, timeout)) {
switch( e.type ) {
case SDL_JOYDEVICEADDED:
if (e.jdevice.which == joystick_id) {
fprintf(stderr, "Joystick %d connected\n", e.jdevice.which);
joystick=SDL_JoystickOpen(e.jdevice.which);
if(joystick) {
fprintf(stderr, "Opened joystick %d\n", e.jdevice.which);
fprintf(stderr, "Name: %s\n", SDL_JoystickName(joystick));
fprintf(stderr, "Number of axes: %d\n", SDL_JoystickNumAxes(joystick));
fprintf(stderr, "Number of buttons: %d\n", SDL_JoystickNumButtons(joystick));
fprintf(stderr, "Number of balls: %d\n", SDL_JoystickNumBalls(joystick));
} else {
fprintf(stderr, "Couldn't open joystick %d\n", e.jdevice.which);
}
}
break;
case SDL_JOYDEVICEREMOVED:
if (e.jdevice.which == joystick_id) {
if (SDL_JoystickGetAttached(joystick)) {
SDL_JoystickClose(joystick);
}
fprintf(stderr, "Joystick %d disconnected\n", e.jdevice.which);
}
break;
case SDL_JOYAXISMOTION:
event_axis(channels, e.jaxis.axis, e.jaxis.value);
break;
case SDL_JOYBUTTONDOWN:
event_button(channels, e.jbutton.button, true);
break;
case SDL_JOYBUTTONUP:
event_button(channels, e.jbutton.button, false);
break;
case SDL_QUIT:
cont = false;
break;
default:
fprintf(stderr,"Unsupported event type: %d\n", e.type);
break;
}
}
print_channels(channels, debug);
}
return 0;
}
void print_channels(channel_t* channels, bool debug) {
for(size_t i=0; i < CHANNELS; ++i) {
fprintf(stdout, "%u\n", channels[i]);
fprintf(stderr, "channel %zu: %u\n", i, channels[i]);
}
fflush(stdout);
fflush(stderr);
}
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