How To Create Basic Shape Exclusion Zones In PCG Volumes In UE 5

Today I show you how you can use simple location volumes to cut out shapes in PCG volumes to create clearings for houses or roads in your game.

[@FPV_Simulator]

Thank you very much!

[@fabiolives]

Exactly what I was looking for, thanks for uploading this. I’ve been old school so I’ve mostly been using the foliage painter and wanted to start using PCG instead. The only issue I’ve had is getting it to stop spawning inside a village I’m making and this will do the trick. Thanks again!

[@SkribblerStudios]

super helpful! thank you!

[@stefan.o]

Doesn't seem to work for me. Im using a close loop spline to scatter but when I add both the landscape data and get spline data, nothing gets removed.

[@crazedmonkey231]

Not sure the exclusion zone should be a simple subtraction against the area you are populating using pcg

[@stefan.o]

@@crazedmonkey231 Isn't that the same setup you described in the video? How would I go about it then?

[@crazedmonkey231]

@@stefan.o Hard to say without seeing the bp. But I'm wondering are you using the volume sampler node with the spline? There is a specific spline sampler which I think needs to be set up the same way I usually stick to simple shape areas they are just easier to work with.

[@stefan.o]

@@crazedmonkey231 Nothing in the BP besides a spline component with a closed loop.

[@LarionSiments]

Thank you! the problem for me is when you use this method, it cuts out this volume box, but populates the rest of the landscape, which i don't want, i just want it to populate the space inside the PCG volume with a cutout, is that possible?

[@crazedmonkey231]

I think that you would just want to use the pcg volume itself in that case, that's where all the spawning happens for the foliage, you can have multiple pcg volumes per level if you need to create something like parks in a city or for points of interest

[@LarionSiments]

@@crazedmonkey231 Yeah i figured as much, but hoped it wasn't so, thanks though

[@crazedmonkey231]

I've seen many videos using splines to block out areas what about just shapes! 🤣Also quick note make sure to disable collision on the PCG volume or your line traces will act wild 🙃. I hope you enjoyed!

[@evansiegal3372]

Is anyone else getting an error on the surface sampler nodes after following this? I double checked everything and did it according to the video but I'm getting an error saying too many points are being generated.

[@Sapix_]

Yeah I'm having the same problem, did u find a solution?

[@Vylocity]

My current system uses GetActorData in the pcg and a difference node and i attach a StaticMesh of a cube to my blueprint with a tag and filter the PCG points based on that tag, but it doesnt work with small points like grass, only my trees

[@crazedmonkey231]

Should work the same as trees only smaller so I'm not really sure

[@Vylocity]

Im trying to add this to a blueprint, so when i place down a BP_House it automatically has that volume attached, however its not available in the drop down on the components tab

[@crazedmonkey231]

The volume is an actor class if you want to add it to another it has to be as a child actor.

[@Vylocity]

@@crazedmonkey231 makes sense, im new to BP so things are just starting to click. Thanks!

[@JedidiahPaul-w3o]

When im following this tutorial, my editor starts lagging a lot and eventually freezes and crashes, even though i have a rly gud pc. any solution?

[@daveg4417]

Same here.

[@raivo4716]

:)