Listen

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/LSL

listen

Description

Event: listen( integer channel, string name, key id, string message ){ ; }

12	Event ID
	Delay

Trigged by chat, use llListen to enable and filter

• integer	channel
• string	name
• key	id
• string	message

Channel Constant		Description
DEBUG_CHANNEL	0x7FFFFFFF	Chat channel reserved for script debugging and error messages, broadcasts to all nearby users.
PUBLIC_CHANNEL	0x0	Chat channel that broadcasts to all nearby users. This channel is sometimes referred to as: open chat, local chat and public chat.

Caveats

• On state change all listens are released (on script reset as well).
• When an object changes owner any listen registered with llGetOwner will not automatically update itself. The scripter needs to capture this event (on_rez and CHANGED_OWNER).

Examples

Trivial example to listen to any chat from the object owner and respond. To reduce lag and avoid spamming surrounding users, it is vastly preferable to listen on channels other than 0 and to trigger the listen event by talking on the alternative channel such as '/5 hello'.

// says beep to owner the first time owner says something in main chat;
integer listen_handle;

default
{
    state_entry()
    {   //Registers the listen to the owner of the object at the moment of the call. This does not automatically update when the owner changes.
        // Change 0 to another positive number to listen for '/5 hello' style of chat.
        listen_handle = llListen(0, "", llGetOwner(), "");
    }
    listen( integer channel, string name, key id, string message ){
        llOwnerSay("beep");
        // Stop listening until script is reset
        llListenRemove(listen_handle);
    }
    on_rez(integer param)
    {   //Triggered when the object is rezed, like after the object had been sold from a vendor
        llResetScript();//By resetting the script on rez it forces the listen to re-register.
    }
    changed(integer mask)
    {   //Triggered when the object has been sold as "original" from in world.
        if(mask & CHANGED_OWNER)
        {
            llResetScript();
        }
    }
}

See Also

Functions

•	llListen
•	llListenControl
•	llListenRemove
•	llDialog
•	llWhisper	–	Sends chat limited to 10 meters
•	llSay	–	Sends chat limited to 20 meters
•	llShout	–	Sends chat limited to 100 meters
•	llRegionSay	–	Sends chat limited to region

Deep Notes

Signature
event void listen( integer channel, string name, key id, string message );