llLoopSound at night only

// Sound Prim Script - Loop
//
// Repeatly plays the sound in inventory if there is
// ONE and ONLY ONE sound.  Silent otherwise.
//
// Set this between 0.0 and 1.0
float LOUDNESS = 0.5;
//
////////////////////////////////////////////////
Noisy()
{
    if ( llGetInventoryNumber(INVENTORY_SOUND) == 1 )
    {
        string soundname = llGetInventoryName(INVENTORY_SOUND, 0);
        if ( soundname != "" )
        {
            llLoopSound( soundname, LOUDNESS );
        }
    }
    else
    {
        llStopSound();
    }
}
////////////////////////////////////////////////
default
{

state_entry()
{
    llStopSound();
    Noisy();
}

changed(integer change)
{
    if (change & CHANGED_INVENTORY)
    {
    llStopSound();
        Noisy();
    }
}

}

integer bPlayingSound = FALSE;   //don't call llLoopSound while it's already looping.

integer SunDown()
{
   vector sunDirection = llGetSunDirection();
   if(sunDirection.z <= 0.0)
   {

        return TRUE;
    }
    else return FALSE;
}

default
{
    state_entry()
    {
         llSetTimerEvent(300);   //every 5 minutes
     }

    timer()
    {
         if(SunDown() )
         {
              if(!bPlayingSound)
              {
                   llLoopSound(gSoundKey, gVolume);
                   bPlayingSound = TRUE;
              }
          }
          else
         {
              llStopSound();
              bPlayingSound = FALSE;
         }
     }
}

llLoopSound(gSoundKey, gVolume);

llLoopSound(gSoundKey,1);

string gSound = llGetInventoryName(INVENTORY_SOUND, 0);
key gSoundKey = llGetInventoryKey(gSound);

if (gSoundKey == NULL_KEY)
{return;}

changed(integer change)
{
if (change & CHANGED_INVENTORY)
{
llResetScript();
}
}

// Sound Prim Script - Loop
//
// Repeatly plays the sound in inventory if there is
// ONE and ONLY ONE sound.  Silent otherwise.
//
// Set this between 0.0 and 1.0

//Volume
float LOUDNESS = 0.5;

//Sound Name Global Variable
string gSoundName = "";

//Boolean Check
integer bSoundOff = TRUE;

//Name:		SunDown
//Desc:		Checks to see if the sun is below the horizon.
//Input:	None.
//Output:	TRUE if the sun is below the horizon.
//			FALSE is the sun is above the horizon.
//Usage:	if(SunDown())
integer SunDown()
{
	//Get the suns direction
	vector sunPosition = llGetSunDirection();
	
	//If the sun is below the horizon
	if(sunPosition.z <= 0.0)
	{
		return TRUE;
	}
	//Sun is above the horizon.
	else return FALSE;
}

//Name:		SoundInInventory()
//Desc:		Checks to see if there is a sound file in the inventory
//			of the object.
//Input:	None.
//Output:	TRUE if there is a sound in the inventory, and assigns
//			that sound name to gSoundName. Only the first sound found
//			in the inventory is assigned to gSoundName. If no sound is
//			found, gSoundName is assigned an empty string.
//Usage:	if(SoundInInventory())
integer SoundInInventory()
{
	//Get the number of sound files in the inventory
	integer numberOfSounds = llGetInventoryNumber(INVENTORY_SOUND);		
	
	//Check to see if there is 1 or more sounds in the inventory
	if(numberOfSounds > 0)			
	{
		//The first sound file in the inventory is assigned to gSoundName
		gSoundName = llGetInventoryName(INVENTORY_SOUND, 0);
		return TRUE;
	}
	else
	{
		//No sound file found in the inventory, setting gSoundName to an empty string.
		gSoundName = "";	
		return FALSE;
	}
}

//Name:		CheckSun
//Desc:		Runs a check on the sun position, and if it's found to be below
//			the horizon, checks to play the sound in the inventory.
//Input:	None
//Output:	If the sun is below the horizon, and the sound is not playing
//			it will start up the sound.
//Usage:	CheckSun();
CheckSun()
{
	if(SunDown())
	{
		//Check to see if the sound is already playing
		if(bSoundOff)
		{
			//Sound not playing, sun is below the horizon, start looping the sound
			llLoopSound(gSoundName, LOUDNESS);
	
			//Make bSoundOff false, so we don't try to keep looping the sound when already playing.
			bSoundOff = FALSE;
		}
	}
	else
	{
		//Sun was found to be above the horizon, stop the sound.
		llStopSound();
			
		//Make bSoundOff true, because the sound is now off.
		bSoundOff = TRUE;
	}
}


default
{

	state_entry()
	{
		//Run a check at the start to see if there is a sound in the inventory
		if(SoundInInventory())
		{
			//Run an initial check to start right away if script started while sun is down.
			CheckSun();
			//Set a timer to go off every 5 minutes.
			llSetTimerEvent(300);
		}
	}
	
	on_rez(integer start_param)
	{
		//Object rezzed, reset the script.
		llResetScript();
	}
	
	timer()
	{
		//Check the sun positon and sound playing
		CheckSun();
	}

	changed(integer change)
	{
		//Detected a change in the inventory
		if (change & CHANGED_INVENTORY)
		{
			//Check to see if the change was a sound file.
			if( ! SoundInInventory() )
			{
				//No sound files found in the inventory, shutting off the timer.
				llSetTimerEvent(0);
			}
			else
			{
				//Reset the script, to go back to the state_entry.
				llResetScript();
			}
		}
	}
}

string gSound = llGetInventoryName(INVENTORY_SOUND, 0);

llLoopSound(gSoundKey, LOUDNESS);