llSetTimerEvent

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/LSL

SetTimerEvent

llSetTimerEvent

Summary

Function: llSetTimerEvent( float sec );

0.0	Forced Delay
10.0	Energy

Cause the timer event to be triggered a maximum of once every sec seconds. Passing in 0.0 stops further timer events.

• float

sec

–

Any positive non-zero value to enable, zero (0.0) to disable.

Caveats

• The time between timer events can be longer, this is caused by:
  • Time dilation - See llGetRegionTimeDilation for more information.
  • Default event delay - Only so many events can be triggered per second.
  • Event Execution - If the execution of an event takes too long.
• The timer persists across state changes, but gets removed when the script is reset. So if you change to a state that has a timer() event, with the timer still running, it will fire in the new state.
• Setting a new timer replaces the old timer and resets the timer clock.
  • If you repeatedly call this function at some interval less than sec the timer event will never fire.
• The timer event is not an interrupt, it will not pause the execution of the currently running event to execute the timer. The current event must finish executing before the timer executes.

Examples

// default of counter is 0 upon script load
integer counter;
float   gap = 2.0;

default
{
    state_entry()
    {
        llSetTimerEvent(gap);
    }

    touch_start(integer total_number)
    {
        llSay(0, "The timer stops.");
        llSetTimerEvent(0.0);
        counter = 0;
    }

    timer()
    {
        ++counter; 
        llSay(0,
            (string)counter+" ticks have passed in " + (string)llGetTime() 
            + " script seconds.\nEstimated elapsed time: " + (string)(counter * gap));
    }
}

//  random period in between (+15.0, +30.0]
//  which means the resulting float could be 30.0 but not 15.0
 
    llSetTimerEvent( 30.0 - llFrand(15.0) );
 
//  same results for:
//  llSetTimerEvent( 30.0 + llFrand(-15.0) );

// The timer event will never fire.
default
{
    state_entry()
    {
        llSetTimerEvent(5.0);
        // Sensor every 2.5 seconds
        llSensorRepeat("", NULL_KEY, FALSE, 0.0, 0.0, 2.5);
    }

    no_sensor()
    {
        llSetTimerEvent(5.0);
    }
    
    timer()
    {
        llSay(0, "I will never happen.");
        llSay(0, "Well, unless llSensorRepeat() magically finds something,"+
                    "or maybe there's 2.5+ seconds of lag and the timer()"+
                    "event queues.");
    }
}

// Using a timer to simulate multiple timers
integer counter_a = 0;
integer counter_b = 0;

default
{
    state_entry()
    {
        //Starting Timer Event
        llSetTimerEvent(1.0);
    }

    timer()
    {
        //Increment counters
        counter_a++;
        counter_b++;

        if(counter_a >= 100)
        {
            //Resetting Counter A
            counter_a = 0;
            llOwnerSay("Counter a has reached 100");
        }

        if(counter_b >= 200)
        {
            //Resetting counter B
            counter_b = 0;
            llOwnerSay("Counter b has reached 200");
        }

    }
}

Notes

• Notes on minimum practical llSetTimerEvent values, Second Life forum, 2011-03-21

See Also

Events

•

timer

Functions

•	llSensorRepeat
•	llGetRegionTimeDilation
•	llGetTime

Deep Notes

Signature
function void llSetTimerEvent( float sec );