How do I make aim dots to show the path of an object before shooting?

I am making a game that can be best summed up as ripoff Peggle, and I need help making aim dots for the ball before shooting. I have no idea how to make this, especially since it would have to take into account the arc of the ball from gravity.

How would I make this?

This is a very popular question, try searching the forum for words like arc, trajectory.

construct.net/en/forum/construct-3/how-do-i-8/create-arc-ball-travel-on-172913

construct.net/en/forum/construct-3/how-do-i-8/projectilearc-trajectory-154297

construct.net/en/tutorials/create-trajectory-projectile-1404

construct.net/en/tutorials/trajectory-calculation-two-2586

etc.

thank you!