Can't bounce ball off of opposite wall; goes behind bricks and flickering too much - Need help with Brick Breaker

[MihaiG]

Think of it like this.. if you bounce a ball off a wall in a perfect system. it bounces right back at you with the same speed.. so what has changed? well the speed is the same the the velocity a vector value has been multiplied by -1. Now we can extrapolate this into 2d, if we bounce it off a vertical plane the vertical component stays the same but the horizontal component gets reversed.