integer nowmode = 0;

openClose(string openmode)
{
    llMessageLinked(LINK_ALL_CHILDREN ,0,openmode,"");
}

changeMode(key id)
{
    if (id == llGetOwner()) {
        if (nowmode == 0) {
            nowmode = 1;
            llOwnerSay("sensor:on");
            state sensoron;
        } else {
            nowmode = 0;
            openClose("close");
            llOwnerSay("sensor:off");
            state default;
        }
    }
}

default
{
    state_entry()
    {
        nowmode = 0;
        llSensorRemove();
    }
    
    touch_start(integer num)
    {
        changeMode(llDetectedKey(0));
    }
    on_rez(integer num) {
        llResetScript();
    }
}

state sensoron{
    state_entry()
    {
        llSensorRepeat("", NULL_KEY, AGENT, 5, PI , 0.5);
    }    
    sensor(integer totalnum)
    {
        openClose("open");
        llSetStatus(STATUS_PHANTOM , TRUE);
    }

    no_sensor() {
        openClose("close");     
        llSetStatus(STATUS_PHANTOM , FALSE);
    }
    touch_start(integer num)
    {
        changeMode(llDetectedKey(0));
    }
}