//sliding door
vector gPosSlide = < 0.0, 1.0, 0.0 >; //-- the offset amount to move
float vFltTmt = 30.0;
float vFltOpn;

uDoor(){
    llSetPos( llGetLocalPos() + gPosSlide * llGetLocalRot() );
    gPosSlide = -gPosSlide;
    llSetTimerEvent( (vFltOpn = (float)(!((integer)vFltOpn)) * vFltTmt) );
    //-- small hack to get around logical not with floats
}
default
{
    state_entry()
    {
        llSay(0, "Hello, Avatar!");
    }

    touch_start(integer total_number)
    {
        uDoor();
    }

    timer(){
        if (vFltOpn){
            uDoor();
        }
    }
}