import ddf.minim.*;
import ddf.minim.analysis.*;

String words[] = loadStrings("http://itp.nyu.edu/~gpv206/pt/chang_style/manifesto.txt");
String theWords[]; // hold the split string for multi-line text

int i=0;  //words index
int j=6;  //audio decibel scale = 6 to -45
float k=0; //fade out at end
float textsizing;  //variable text sizing based on audio level
int startY ;

AudioPlayer song;
BeatDetect beat;

float kickSize, snareSize, hatSize;

PFont theFont;

void setup()
{
  size(640,480);
  // smooth();
  Minim.start(this);
  song = Minim.loadFile("http://itp.nyu.edu/~gpv206/pt/chang_style/taiko_dance_short.mp3",1024);
  song.setGain(j);
  song.play();

  // a beat detection object that is FREQ_ENERGY mode that 
  // expects buffers the length of song's buffer size
  // and samples captured at songs's sample rate
  beat = new BeatDetect(song.bufferSize(), song.sampleRate());
  // set the sensitivity to 300 milliseconds
  // After a beat has been detected, the algorithm will wait for 300 milliseconds 
  // before allowing another beat to be reported. You can use this to dampen the 
  // algorithm if it is giving too many false-positives. The default value is 10, 
  // which is essentially no damping. If you try to set the sensitivity to a negative value, 
  // an error will be reported and it will be set to 10 instead. 
  beat.setSensitivity(400);  

  theFont = loadFont("Consolas-48.vlw");
  textFont(theFont);
  textAlign(CENTER);
  fill(0);

}

void draw()
{
  background(255);
  // use the mix buffer for detection
  beat.detect(song.mix);

  if ( beat.isKick()  ) {
    // if ( beat.isSnare() ) {  //progress through text based on snare report
    // if ( beat.isHat() ) {
    i++;     

    textsizing = 30+song.right.level()*100;
    //textsizing = constrain(textsizing * 0.95, 20, 50);
    //println(textsizing);
    //   }
  }

  if (i >= words.length){
    i=(words.length)-1;

    if (j > (-45)) {  //AUDIO SCALE: 6 to -45dB       
      j=j-2; 
      k=k+15;    
      song.setGain(j);
      //print("The current gain is ");
      //println(song.getGain());

      fill(k);    
    } 
    else {
      stop();
    }          

  }

  fill(k);
  textFont(theFont);
  textSize(textsizing);
  textAlign(CENTER);
  theWords = split(words[i],"/");

  startY = int((height - (theWords.length * textsizing))/2 + textsizing) ;

  for (int l = 0; l < theWords.length; l++) {

    text(theWords[l], width/2, startY);
    startY = int(startY + textsizing);
  }
}

void stop()
{
  // always close Minim audio classes when you are finished with them
  song.close();
  super.stop();
  exit(); 
}