case 'stop':
case 'fwd':
case 'rev':
case 'left':
case 'right':
$robot->setDuration(isset($_POST['duration']) ? intval($_POST['duration']) : 0);
$robot->{$action}();
$response->performed = $action;
break;
case 'cam':
$direction = isset($_POST['direction']) ? $_POST['direction'] : '';
$position = isset($_POST['position']) ? $_POST['position'] : '';
$response->performed = $robot->camera($direction, $position);
break;
case 'ping_dist':
$response->performed = $robot->pingDist();
break;
case 'status':
$response->data = $robot->status();
$response->performed = 'status';
break;
case 'radar_sweep':
$response->performed = 'radar_sweep';
$response->data = $robot->sweep();
break;
case 'show_clock':
$response->performed = $robot->showClock();
break;
case 'light':
$num = isset($_POST['num']) ? intval($_POST['num']) : 0;
$status = isset($_POST['status']) ? intval($_POST['status']) : 0;
