How to bounce a ball (oval) off a wall

[pat1084]

I have a project due in a couple of days and i am trying to figure out how to make a ball move itself in a diagonal line, and when it hits a wall that it will be able to rebound back at the same angle that it hit the wall. i am completly new at turing and any help would be appreciated

[saltpro15]

here's some pseudo code to get you started

code:

var velx, vely, posx, posy : int if posx > maxx - 5 then velx := -velx elsif posx < 5 velx := -velx end if

should be alone those lines to bounce it off walls