class food{

  int initialTime; 
  PVector myPos;
  int mySize;
  int myLiveSpan;

//gridStart, gridSpacing, gridColumns, gridRows

  food(int _s, int _l){
    initialTime = millis();
    mySize = _s;
    myLiveSpan = _l;
    myPos = new PVector(gridStart+gridSpacing*int(random(gridColumns)), gridStart+gridSpacing*int(random(gridRows)));
  } 

  void update(){
    checkIfImAlive();
    drawMe();
  }

  void checkIfImAlive(){
      if(millis()-initialTime > myLiveSpan){
        //kill myself:
         foodArray.remove(this); 
      }
  }

  void drawMe(){
    rect(myPos.x,myPos.y,mySize,mySize);
  } 

  PVector getPosition(){
    return myPos;
  }
}