RTS How to make your unit selection markers conform to irregular terrain?

[LEP1981]

Hi guys,

I’m currently developing my first ever game in Unreal Engine 4 and, of course, my first RTS game. One of the issues I’m having now is the fact that my unit selection markers are clipping into the terrain, like this:

And ideally I would like to have the markers conform to the irregular terrain as if it was a decal or a projection on the terrain itself (if that makes any sense). I include below my base character setup, showing the way I have included the markers within the blueprint:

It’s basically a plane with a procedural material generating a circle with a gradient (no circle texture file).

Can anyone suggest a better way to approach and resolve this issue?

Thanks in advance for your time and help on this matter.

[Everynone]

as if it was a decal or a projection
on the terrain itself

I’ll bite; is there a reason why you aren’t using a decal for this?

[Kehel18]

Hi! Maybe this can help Visibility and Occlusion Culling | Unreal Engine Documentation

[LEP1981]

I’ll bite; is there a reason why you aren’t using a decal for this?

Honestly… I didn’t start this project using the topdown template from unreal… but looking at it, it is indeed what I need.

Thanks @Everynone

[Everynone]

I’ll just add that individual meshes can opt out from receiving decals.

[Everynone]

You can add it to your existing stuff easily enough.

It’s a component that manages how the decal behaves. The projection is along the X (forward in UE4) axis so you may need to rotate it accordingly so the X is pointing towards the ground.

Good luck!