This little experiment is for the old school breakout style games and similar games where the ball or bullet would ricochet around in proper angles and not stray off at strange angles.
Plus not leaving the boundary.
I discovered that Custom Movements is much better than the Bullet behavior for the keeping the angles proper.
Also, 
rexrainbow Boundary is great to keep the sprite inside the area and not have problem with escaping balls/bullets!
What do you think?
Requires plugin Boundary.
The ball do go beyond the boundary in high speed/low spec computer but at least it will still be inside the box and not escape or go off in strange angles.
Feel free to use this example in your works. But please use your own graphic for blocks.