I am still working on a breakout clone and I am trying to get the ball to bounce of the paddle here is some of the code, I am very close to figuring it out I just need a little bit of help, let me know if you need more information // Reverse direction when you reach left or right edge if (x < -windowWidth || x > windowWidth - rsize) { if (x < -20.0f + i || x > 20.0f + rsize + i) { xstep = -xstep; } } // Reverse direction when you reach top or bottom edge if ((y < -windowHeight + rsize || y > windowHeight) || ( y - rsize < -90.0f)) { ystep = -ystep; }