Phaser site Space Invaders Example - stop the player and aliens from going out of bounds

[montane]

In the example here http://phaser.io/examples/v2/games/invaders I would like to stop the player from being able to go out of the visible area. At the moment if you keep scrolling right or left the player goes out of view. 

Thanks in advance.

[spinnerbox]

I would check Arcade physics instead:

http://phaser.io/examples/v2/category/arcade-physics

I think, 

sprite.body.collideWorldBounds = true;

http://phaser.io/examples/v2/arcade-physics/one-way-collision

is what your are searching for.