Can someone help me with a boolean to make sound play once from a loop?

becca2404

I'm checking if a value of a place changes but I only want the sound to play once from the loop and stop and then restart again if the next value of a place is the same. I will be having more than one sound in the end but right now I'm working off one. I'm not too experienced at Processing but I have been trying to it but not succeeding. Any help is much appreciated. It's basically the last step I need to finish this

JSONObject earthJSON;
JSONArray earth;

import ddf.minim.*;

Minim minim;
AudioSample sound; 
boolean firstPlayThrough = false;

int mag;
String placecheck = " ";
String place;
int startTime;

void setup() {

 frameRate(0.1);
  size(512, 200, P3D);  
  minim = new Minim(this);
  sound = minim.loadSample( "sound.mp3");

}

void playSound(){
if (mag == 1){

  if(firstPlayThrough == false){
          sound.trigger();}

}

}   

void checkValue(){   
placecheck = place;

playSound();

}


void draw() { 

  earthJSON = loadJSONObject("http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_hour.geojson");

  earth = earthJSON.getJSONArray("features");
  //println(earth.size());


    mag = earth.getJSONObject(0).getJSONObject("properties").getInt("mag");
    place = earth.getJSONObject(0).getJSONObject("properties").getString("place");

    println("_________________________");
    println("mag: " + mag);   
    println("place: " + place);

    if (place != placecheck){
 if(sound.isPlaying() == false){
   sound.pause();
   if(firstPlayThrough == false) firstPlayThrough =  true;}
    }


 if(firstPlayThrough == true){

        sound.pause();//pause the current playback wherever it is
        sound.cue(0);//set it at the start
        sound.trigger();//play        
        }

}



void stop()
{
minim.stop();

}

koogs

void draw() {

  earthJSON = loadJSONObject("http://" + "earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_hour.geojson");
  ...

PLEASE DON'T DO THIS. draw() runs up to 60 times a second by default. requesting that web page constantly like this is a terrible thing to do. you need to limit it.

http://earthquake.usgs.gov/earthquakes/feed/v1.0/quakeml.php says that the data is only updated every 5 minutes so you only need to check it that frequently.

becca2404

How do I do that?

GoToLoop

An example from this thread below:
http://forum.processing.org/two/discussion/1891/adding-intervals-for-fetching-rss-data

/** 
 * Timed XML Fetcher (v2.12)
 * by  alless0 (2013/Dec)
 * mod GoToLoop
 * 
 * forum.processing.org/two/discussion/1891/
 * adding-intervals-for-fetching-rss-data
 */

static final int MAX_ROWS = 9, INTERVAL = 5*60*1000; // 5 minutes
static final int DIM = 48, GAP = 65;
static final color BG = 0300, FG = 0;

static final String URL  = "http://" + "www.hamshahrionline.ir/rss";
static final String DIR  = "channel/item/title";
static final String NAME = "news-", EXT = ".png";

static PGraphics pg;
static boolean isActive = true;

void setup() {
  size(1280, 720);
  frameRate(60);
  noLoop();

  pg = createGraphics(width, height);

  pg.beginDraw();
  pg.smooth(4);
  pg.fill(FG);
  pg.textFont(createFont("Nazanin", DIM));
  pg.textAlign(RIGHT, TOP);
  pg.endDraw();

  thread("xmlFetchTimer");
}

void draw() {
  background(pg);
  //pg.save(dataPath(NAME + nf(frameCount, 3) + EXT));
  saveFrame(dataPath(NAME + "###" + EXT));
}

void xmlGetAndRender() {
  final XML[] elems = loadXML(URL).getChildren(DIR);
  final int len = min(elems.length, MAX_ROWS);
  final int w = width - 5;

  pg.background(BG);
  for (int i = 0; i != len; pg.text(elems[i++].getContent(), w, GAP*i));
  pg.endDraw();
}

void xmlFetchTimer() {
  delay(1000);
  frameCount = 1;

  while (isActive) {
    xmlGetAndRender();
    redraw();
    delay(INTERVAL);
  }
}

PhiLho

Don't make duplicate threads. I answered in the other thread, so you are diluting information and wasting efforts.