Help with a target reticle moving across terrain

I am making a game for my scripting class and cannot figure out how to do this or even go about it. I am making a top down plane shooter and I was hoping to get a target reticle to be a child of the plane(player) so the player could drop bombs and the they could see visually where they would drop. My problem is I want the target reticle to move across the terrain instead of going through it because I do have uneven terrain. The bomb will fall in a trajectory of which I haven’t decided yet but it will fly out and down instead of just straight down. I am only familiar with Js by the way. Thanks for looking.

If you create an alpha mask of the reticle shape, you can change the shape of a spot light:

How to do this: Create a spot light, attach to your bomber. Then, set the “Cookie” property to the texture. To avoid texture tiling, set the texture Wrap Mode to Clamp instead of Repeat. Change the intensity and colors to your liking.

Now, the reticle will never clip out of the screen because it’s part of lighting!

Use a projector, such as the one in the example here.