LlAdjustSoundVolume

LSL Portal

Summary: llAdjustSoundVolume, llLinkAdjustSoundVolume

Adjusts volume of attached sound.

Function: llAdjustSoundVolume( float volume );


0.1	Forced Delay
10.0	Energy

• float volume – between 0.0 (silent) and 1.0 (loud) (0.0 <= volume <= 1.0)

Caveats

This function causes the script to sleep for 0.1 seconds.

Function: llLinkAdjustSoundVolume( integer link, float volume );


0.1	Forced Delay
10.0	Energy

• integer	link	–	Link number (0: unlinked, 1: root prim, >1: child prims and seated avatars) or a `LINK_*` flag
• float	volume	–	between 0.0 (silent) and 1.0 (loud) (`0.0 <= volume <= 1.0`)

Caveats

This function causes the script to sleep for 0.1 seconds.

Flag		Description
LINK_ROOT	1	refers to the root prim in a multi-prim linked set^[1]
LINK_SET	-1	refers to all prims
LINK_ALL_OTHERS	-2	refers to all other prims

Flag		Description
LINK_ALL_CHILDREN	-3	refers to all children, (everything but the root)
LINK_THIS	-4	refers to the prim the script is in

Caveats

Not work llTriggerSound and llCollisionSound

Examples

default
{
    state_entry()
    {
        llListen(42, "", llGetOwner(), "");
    }

    listen(integer chan, string name, key id, string msg)
    {
        float value = (float)msg;
        llAdjustSoundVolume(value);
        llOwnerSay("Volume set to: " + (string)value + " of 1.0");
    }
}

default
{
    collision_start(integer p)
    {
        llPlaySound("5df2e97f-d3ab-9a80-7063-69007470a182", 1.0);
        llAdjustSoundVolume(1.0);
        llSetTimerEvent(0.2); //In 0.2 seconds, will reduce the volume of the currently playing audio.
    }
    timer(){
        llAdjustSoundVolume(0.1);
        llSetTimerEvent(0.0);
    }
}

Notes

Link Numbers

Each prim that makes up an object has an address, a link number. To access a specific prim in the object, the prim's link number must be known. In addition to prims having link numbers, avatars seated upon the object do as well.

If an object consists of only one prim, and there are no avatars seated upon it, the (root) prim's link number is zero.
However, if the object is made up of multiple prims or there is an avatar seated upon the object, the root prim's link number is one.

When an avatar sits on an object, it is added to the end of the link set and will have the largest link number. In addition to this, while an avatar is seated upon an object, the object is unable to link or unlink prims without unseating all avatars first.

Counting Prims & Avatars

There are two functions of interest when trying to find the number of prims and avatars on an object.

llGetNumberOfPrims() - Returns the number of prims and seated avatars.
llGetObjectPrimCount(llGetKey()) - Returns only the number of prims in the object but will return zero for attachments.

integer GetPrimCount() { //always returns only the number of prims
    if(llGetAttached())//Is it attached?
        return llGetNumberOfPrims();//returns avatars and prims but attachments can't be sat on.
    return llGetObjectPrimCount(llGetKey());//returns only prims but won't work on attachments.
}

See llGetNumberOfPrims for more about counting prims and avatars.

Errata

If a script located in a child prim erroneously attempts to access link 0, it will get or set the property of the linkset's root prim. This bug (BUG-5049) is preserved for broken legacy scripts.

Deep Notes

History

llLinkAdjustSoundVolume Added in SL 0.2.0^[2]

Footnotes

^ LINK_ROOT does not work on single prim objects. Unless there is an avatar sitting on the object.
^ Early release notes were not very accurate or thorough, they sometimes included information about features added in previous releases or failed to include information about features added in that release.

Signature
function void llAdjustSoundVolume( float volume ); function void llLinkAdjustSoundVolume( integer link, float volume );

LlAdjustSoundVolume

Contents

Summary