3D Game Programming for Kids, 2nd Edition

Scoreboard

We’ll want to keep score in this mini-game, so let’s add a scoreboard. Below the line that creates the new Launcher(), add the usual scoreboard code:

​var​ scoreboard = ​new​ Scoreboard();
scoreboard.countdown(60);
scoreboard.score(0);
scoreboard.help(
  ​'Use right and left arrow keys to point the launcher. '​ +
  ​'Press and hold the down arrow key to power up the launcher. '​ +
  ​'Let go of the down arrow key to launch. '​ +
  ​'Watch out for the wind!!!'​
);
scoreboard.onTimeExpired(timeExpired);
​function​ timeExpired() {
  scoreboard.message(​"Game Over!"​);
}

You can skip the help text for now if you’re eager to get back to coding. Just don’t ...