How to make a Health Bar

I’m trying to create a game similar to Asteroids (a retro space shooter game). I’m wondering if it’s possible to make the healthbar more interesting than just displaying the number of hit points the user has left. I was thinking of having 5 Heart icons to represent the user’s life, and subtract one every time they are hit. But I’m unsure how to do this, or if it’s even possible?

I’ll also be open to having a regular bar of health that slides down with each collision, and it’s Game Over once the bar is gone.

See scrIndicators

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