/*
* Variables
*/
int time_now;
int time_old;
int time_delta;

int countdown_start;
int countdown;
int time_counter_started;
boolean start;

/*
* Funcion incializacion
*/
void setup() {
  size(800, 400);
  // size(800, 400, P2D);
  // size(800, 400, P3D);

  background(0, 0, 0);
  stroke(255, 255, 255);

  frameRate(10);

  time_old = 0;

  countdown_start = 10;
  countdown = countdown_start;
  time_counter_started = 0;
  start = false;
}

/*
* Funcion de repintado
*/
void draw() {
  time_now = millis();
  time_delta = time_now - time_old;
  time_old = time_now;

  background(0, 0, 0);

  textSize(30);
  text(time_delta, 50, 35);
  text("ms entre frames", 130, 35);
  text("Cuenta atrás: " + countdown, 50, 70);

  if (start && countdown > 0) {
    countdown = countdown_start - (time_now - time_counter_started) / 1000;
  }
}

/*
* Captura click raton
*/
void mousePressed() {
  start = true;
  time_counter_started = millis();
}