landing land the drone concode_field_sep GeneralMotorCon ourInstance concode_elem_sep int spin90Time concode_elem_sep String TAG concode_elem_sep int batLvl concode_elem_sep long threadTimer concode_elem_sep int spinSpeed concode_elem_sep CommandManager cmd concode_elem_sep int hoverTime concode_elem_sep int speed concode_elem_sep int spin90Speed concode_elem_sep ARDrone drone concode_elem_sep int spinTime concode_field_sep void spin90Left concode_elem_sep void spinRight concode_elem_sep void takeoff concode_elem_sep void forward concode_elem_sep void spinLeft concode_elem_sep void right concode_elem_sep void lowerAltitude concode_elem_sep void spin90Right concode_elem_sep void setDrone concode_elem_sep void left concode_elem_sep void backward concode_elem_sep GeneralMotorCon getInstance concode_elem_sep void setBatLvl concode_elem_sep void waitFor concode_elem_sep int getBatLvl concode_elem_sep void onStop concode_elem_sep void raiseAltitude