I was just wondering if anyone knows of a good way to create the cross boomerang from Castlevania Rondo of Blood in Construct 3. It's a spinning cross that the player throws across the screen horizontally and after it has travelled a certain distance it reverses it's direction slowing down before it changes directions then speeding back up again after it has. I can get a bullet to reverse directions easy enough but I'm struggling to create the part where it slows down then speeds back up again.
Here is a convenient picture from the Castlevania wiki that might help illustrate what I want to achieve.
Any help would be appreciated