I've been having trouble saving the printed data (co-ordinates and seconds) more than once when a key is pressed.

The aim is to try and save 'println' data to a file live and continuously while the programme is running.

At the moment, all I can seem to do is save data to a file until i press a key for the first time - then it stops recording,

Please help!

Richard

PrintWriter output;

void setup() {
  // Create a new file in the sketch directory
  output = createWriter("data_stream_time.txt");
}

void draw() {
  point(mouseX, mouseY);
  println (millis() / 1000);
  println(mouseX + "t" + mouseY); // Write the coordinate to the file
  output.println(mouseX + "t" + mouseY); // Write the coordinate to the file
  output.println (millis() / 1000);
}


void keyPressed() {
  output.flush(); // Writes the remaining data to the file
  output.close(); // Finishes the file
  redraw(); //redraws the programme when a letter is typed, flushes the data to the file
}

//only saves the first instance before you press a key. Afterwards it doesn't save!