Game Development Reference
We now have a fully functioning HUD that displays our health bar in the
top-left corner! There's still one last step, however. We need to tell our game
to use our new HUD. In our TutorialGame class, add the following code in
the DefaultProperties block:
Notice how our bar changes to a red color when our health is dangerously low.
You can also now see the first bar drawn, which illustrates the maximum capacity
for our hit points.