The original example is thought at the udemy course https://www.udemy.com/game-development-crash-course/ by J. A. Whye. I just take this example, modify it by putting an health bar under the planet using a closure.
cgonc/ProtectThePlanet
The original example is thought https://www.udemy.com/game-development-crash-course/ . I added a healthbar using closures.
LuaMIT