Light bulb

I wont to add a night affect where you cant see anything because its pitch black and when you click somewhere in a small circle that bit becomes light till you let go. the project link is dl.dropbox.com/u/43013976/c17%20project.capx

or how do i do it like scirra.com/forum/lighthouse-example_topic41045.html

Have you seen the lighting.capx example that comes with C2? Yo could amend this so that the mouselight(see example) is initially set to 'invisible' and on click, make it 'visible'. When you let go of the left click, set it to invisible. It then behaves just like switching on a small light.

Is THIS what you mean?

Thanks for your help :)