How do I best automate enemy movement in a Pong type game?

Hey guys!

I'm making a pong style minigame in my current project. I tried using Pathfinding to make my AI move (essentially, every tick, find location (0, Puck.Y), and when you find it, move to it. My theory is that Pathfinding is taking more than 1 tick to execute, because my poor AI just sat there, confused.

I've found a workaround that does alright (If Monster.Y > Puck.Y, Monster.Y = Monster.Y - 3), but is there a more effective solution than just translating the AI up and down the Y axis? Is there a way to make pathfinding work? Thanks!

First, I know what do you mean by Pong, but after you mentioned Monster... I started to get unsure about your Pong game...

What is the monster doing in the Pong game? Without understanding further comtext, we can't help you validly.

— Sorry about that! The monster is the AI playing pong with you, instead of a paddle.

http://www.scirra.com/arcade/example/2011/ping-pong-ai

With capx

JamesXXXYZ thanks mate