Collision Groups?

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#1

I have a problem, when I use the touched function on a part it only works when I get a different part and have anchored off and let it fall on the part with the touched function.

I’m trying to make a placement system and if the object I’m trying to place is colliding with a different object I would not be able to place, but I’m unable to do this because the part I’m trying to place down is anchored and is not falling on the part its supposed to be colliding with.

I think the way I can solve this is by using a Collision group but I am not unfamiliar with collision groups and cant find videos explaining the topic.

Any help with this topic would be greatly appreciated.

#2

For a placement system, relying on roblox physics is not the solution, if you’re placement system is simple enough and blocky, you can use boundsinbox and check if there are any parts, it won’t be 100% though, so you could create a grid system with each tile numbered and check if the occupied tiles are already occupied

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#3

I already have a placement system, I’m trying to make a function if their is two parts colliding with one another