physics don't work when angle is -90 or 90

[yonimal676]

This problem is caused from the velocityX being impossibly tiny (7.717558E-5 for example).

so one solution might be setting velocityX to 0 AS IT SHOULD BE when the angle is 90 or -90.

I've tried it and it's not the problem.

Found the source of the bug:

if (ball.velocityY == 0 || ball.x >= ball.range * ball.ratioPXtoM)
                ball.velocityY *= -1;

To be honest i have no idea why it was there in the first place, but that happens sometimes...