boolean pressedLast[];
boolean keyHit(char c) {
  if (pressedLast == null) {
    pressedLast = new boolean[256];
  }
  //println ("pressedLast[c] == " + pressedLast[c]);
  if (keyPressed && key == c) {
    //println("down");
    if (!pressedLast[c]) {
      pressedLast[c] = true;
      return true;
    } else {
      return false;
    }
  }
  pressedLast[c] = false;
  return false;
}