How to detect if a group sprite is within a certain area of the screen?

[Uhfgood]

I'm making an asteroids 'clone' -- and I want to respawn my player in the center when he gets hit, is there a way to detect with sprites in a group are in a certain area of the screen, or do I need to write a function that iterates through each asteroid and checks it manually? (or make a blank sprite somehow and then just do a regular collision check as per normal?)

 

Thanks

[lewster32]

The iteration approach would be the best, and much more efficient than a collision/overlap based approach.

[Uhfgood]

Interesting, I would have thought it would be better to let phaser do a check -- but okay, I can iterate through each active asteroid, and test to see if they're within a certain area.  Thanks!