Bottom of the screen detection

How do I detect if one of my balls hit the bottom of the screen ? and how do I write something on the screen to let the user know that the ball touched the bottom of the screen ?

Total noob here… but you might research about “collisions”.

https://docs.coronalabs.com/guide/physics/collisionDetection/index.html

Maybe by placing “wall objects” just outside the screen area and registering interactions with them.

Total noob here… but you might research about “collisions”.

https://docs.coronalabs.com/guide/physics/collisionDetection/index.html

Maybe by placing “wall objects” just outside the screen area and registering interactions with them.