how to prevent ball from going off top screen

Getting Started Newbie Questions
#1

good evening

How do i prevent my ball from going off screen ??? ball is draggable and enemy continously spawn from top…

should i add walls upside? but if i add walls, enemy which spawns will collide with it and wont come downwards…

So any help ?

#2

The physics engine supports collision filters. You can set it so that only your ball will collide with the wall and not the enemy. See:

https://docs.coronalabs.com/guide/physics/collisionDetection/index.html#collision-filtering

Rob

#3

To better understand collsion-filtering read this https://forums.coronalabs.com/topic/2128-collision-filters-helper-chart/

Hope this help :slight_smile:

#4

Thanks for extra info ! :slight_smile:

#5

The physics engine supports collision filters. You can set it so that only your ball will collide with the wall and not the enemy. See:

https://docs.coronalabs.com/guide/physics/collisionDetection/index.html#collision-filtering

Rob

#6

To better understand collsion-filtering read this https://forums.coronalabs.com/topic/2128-collision-filters-helper-chart/

Hope this help :slight_smile:

#7

Thanks for extra info ! :slight_smile: