UnrealI.DynamicAmbientSound

//=============================================================================
// DynamicAmbientSound.
//=============================================================================
class DynamicAmbientSound expands Keypoint;

var() bool       bInitiallyOn;      // Initial state
var() sound      Sounds[6];         // What to play (must be at least one sound)
var() float      playProbability;   // The chance of the sound effect playing
var() float      minReCheckTime;   // Try to restart the sound after (min amount)
var() float      maxReCheckTime;   // Try to restart the sound after (max amount)
var() bool       bDontRepeat;       // Never play two of the same sound in a row
var   bool       soundPlaying;      // Is it currently playing it?
var   float      rePlayTime;
var   int        numSounds;     // The number of sounds available
var   int        lastSound;     // Which sound was played most recently?

function BeginPlay () {
    
    local int i;
    
    // Calculate how many sounds the user specified
    numSounds=6;
    for (i=0; i<6; i++) {
        if (Sounds[i] == None) {
            numSounds=i;
            break;
        }
    }

    lastSound=-1;
    if (bInitiallyOn) {
        // Which sound should be played?
        i = Rand(numSounds);
        PlaySound (Sounds[i], , Float(SoundVolume)/128, , Float(SoundRadius)*25);
        lastSound = i;
    }

    rePlayTime = (maxReCheckTime-minReCheckTime)*FRand() + minReCheckTime;
    SetTimer(rePlayTime, False);
}


function Timer () {

    local int i;
    
    if (FRand() <= playProbability) {
    
        // Play the sound
        // Which sound should be played?
        i = Rand(numSounds);
        while( i == lastSound && bDontRepeat && numSounds > 1 )
            i = Rand(numSounds);
        
        PlaySound (Sounds[i], , Float(SoundVolume)/128, , Float(SoundRadius)*25);
        lastSound = i;
    }

    rePlayTime = (maxReCheckTime-minReCheckTime)*FRand() + minReCheckTime;
    SetTimer(rePlayTime, False);
}