// ActionScript Document
/*
This script is just for the DJ interface.
it presumes there are two movie clips ch1 and ch2 which are self contained mp3 players that except volume changes.



*/
// named objects needed in flash document::
//xfadeSlider_1
//xfadeSlot_1
//ch1
//ch2

stop();  // stop the movie from running away!!

//-----------------------------------------------------------------------------Declare and Initialize variables
//-----------------------------------------------------------declare

var sa : Array = new Array();  // make new array sa (song array)
var si : Number; // song index 


// numbers for xfade control
var newVol_1 	: Number; 
var newVol_2 	: Number; 
var avrVol_1 	: Number; 
var avrVol_2 	: Number; 
var cv_1		: Number; 
var cv_2		: Number; 
var offset 		: Number;

//---------------------------------------------------------- init.

si = 0;
newVol_1 	= 100;
newVol_2 	= 0;
avrVol_1 	= 100;
avrVol_2 	= 0;
cv_1 		= 1;
cv_2 		= 1;
offset      = 2 ; // this value is also needed to put the volume controlls in the right range





//-------------------------------------------------------------------------------------ROLL OVER Array Stuff




//--------------------------------------------------------------------------------------------------set si

// this function is called the first time a rollbank sound is started.
//  its designed to allow for an arbitrary number of rollbanks to call and refer to it...
//  the index it incremented until it hits the end of the song array
//  the index is then reset. so the rollbank does not need to know anythign about the song array...
function si_inc():Void{
	    // make sure index is within the limits of song array
    if ( si == (sa.length -1)){ si = 0;  } // note that sa is assigned remotely
        // if it still hasn't reached the limit, increment.
    else{    si = si + 1;   }
        // debugging: show us that this function has been called.
    trace("you called...   "+ si + " "); // let us know where you stand....

}//end si_inc


//-----------------------------------------------------------------------------init when song sub clips are loaded

function songsLoadedLetsGo() : Void{

  //--------------------------------------------------update sound objects 
		ch1.song_1.setVolume(90);  
		ch2.song_1.setVolume(20);
		
		//---------------------------------------------------update interface
		ch1.tLabel2.text =  (avrVol_1 - offset);
		ch2.tLabel2.text =  (avrVol_2 - offset);
		
		//--------------------------------------------------start playback
		ch1.startSound_1();
		ch2.startSound_1();
		

}
















//--------------------------------------------------------------------------------------------clickVol stuff

// local vars

var volinc_1 : Number;
volinc_1 = 10;


ch1_up.onPress = function(){
	if (cv_1 >= 1){ cv_1 = 1;}
	else{ cv_1 = cv_1 + 1/10;}
}
ch1_dn.onPress = function(){
	if (cv_1 <= 0){ cv_1 = 0;}
	else{ cv_1 = cv_1 - 1/10;}
}

ch2_up.onPress = function(){
	if (cv_2 >= 1){ cv_2 = 1;}
	else{ cv_2 = cv_2 + 1/10;}
}
ch2_dn.onPress = function(){
	if (cv_2 <= 0){ cv_2 = 0;}
	else{ cv_2 = cv_2 - 1/10;}
}




//--------------------------------------------------------------------------------------------Crazy Slider stuff
/*
this is my gnarly-hairy version of a cross fader in actionscript 2.0   
The lowpassing of  volume changes helps reduce clicks...

*/

//--------------------------------------------------------------------------Press Events
myxfader_1.xfadeSlider_1.onPress=function(){
	
	// start moving the slider object when mouse is pressed
	myxfader_1.xfadeSlider_1.startDrag(false,0,0,500,0);

	//-------------------------------do this stuff when mouse is active in this frame (and pressing)
	myxfader_1.xfadeSlider_1.onEnterFrame=function(){
	     
		// get slider position as a number value (the slider is 500px wide)
		//  so we devide by 5 to get a range of 0-100.  this has to be scaled 
		//  by 1.033 to help offset some of the lowpass math below
		// cv_ variables come from the click volume change
         
         newVol_1 = (cv_1 * 1.033 * (100 - (myxfader_1.xfadeSlider_1._x / 5)));
         newVol_2 = (cv_2 * 1.033 * ( (myxfader_1.xfadeSlider_1._x / 5)));
         
         // since the slider can move faster than the volume can be updated, and can cause clicks,
         // we are using a somewhat severe running average to smooth changes in volume enough so
         // that clicks are kept to a minimum.
         avrVol_1 = Math.round(((avrVol_1 * 3) + newVol_1) / 4    ) ;
         avrVol_2 = Math.round(((avrVol_2 * 3) + newVol_2) / 4    ) ;
         
        //--------------------------------------------------update sound objects 
		ch1.song_1.setVolume(avrVol_1 - offset);  
		ch2.song_1.setVolume(avrVol_2 - offset);
		
		//---------------------------------------------------update interface
		ch1.tLabel2.text =  (avrVol_1 - offset);
		ch2.tLabel2.text =  (avrVol_2 - offset);

  }//end on enter frame function
}// end on press funtion


//-------------------------------------------------------------------------Release Events
myxfader_1.xfadeSlider_1.onRelease=stopDrag;
myxfader_1.xfadeSlider_1.onReleaseOutside=stopDrag;