Physics done! Let’s create a level!
Here we are: the whole physics are working, the ball bounces against the walls created by clicking ! I’ve created some sprites using Inkscape, and SFML2 is really awesome to work with (it doesn’t get in your way and it gets the job done easily) !
Next on my task list: creating a level, probably adding scrolling and maybe some music and sound effects ! The title screen also needs some polish, but it does its job for now.

That's a bouncing ball !