visible/invisible area on scene

[vivaldi]

Hello,
How can i create visible/invisible areas on scene for some sprites like on this scheme http://s14.postimg.org/pcraktiu9/Image003.png

Sprites can moves up and down, but when  some part of sprite is on invisible area so this part should not be visible.
Thanks.

[unikronsoftware]

Look at the UI Mask demo - you can get what you need with carefully placed masks.

[vivaldi]

Thanks