How can I detect if there is any terrain is in a certain part?

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#1

Hey guys, I’ve been having some problems figuring out how I can have a certain part detect if there is any terrain in it. I’m working on a new spawn system for one of my games. Right now all my parts spawn on a random position “on top” of a part. But I wish too make it so. All the parts I want to spawn in one area spawn on each highest point “on” the terrain. Example:
(This is what players would see when the game runs.)
On the left you can see what I want to achieve. The right is what i figured out.

image
image1332×963 1.66 MB

(This is what my studio view should look like.)
On the left you see a pink regional part that’s covering up a piece of terrain. When the game runs. It searches for any terrain in the part and spawns whatever I want on the highest point of the section. On the right side was how my old system was. But was for parts and checked for the TopSurface.

image
image1331×962 1.63 MB

If you don’t understand what I mean. You may reply and I’ll respond back asap. Any thoughts are welcome! :smiley:

Thanks in advance.

5 Likes
#2

You can try using ReadVoxels to see if it returns anything.

#3

I’ve tried using ReadVoxels many times but I can’t get it working. If someone is able to write me even the smallest script. That would be appreciated. Thanks. :relieved::+1:

#4

Hmm, in order to achieve the highest point of the terrain why not cast a ray to find the surface position and place the part there?

Edit: NVM, I see your point of highest point in one area, have you tried reading and experimenting with what the ReadVoxels returns in the article?

local region = Region3.new(Vector3.new(0,0,-15), Vector3.new(4,8,4))
region = region:ExpandToGrid(4)
local material, occupancy = game.Workspace.Terrain:ReadVoxels(region, 4)
local size = material.Size
for x = 1, size.X do
	for y = 1, size.Y do
		for z = 1, size.Z do
			print("Material at (", x, y, z, "): ", material[x][y][z])
			print("Occupancy at (", x, y, z, "): ", occupancy[x][y][z])
		end
	end
end

You can probably try to find the occupancy at the highest y coordinate and use that as a place to spawn the part, but there is a chance there might be multiple occurrences of the highest point which you might need to store in a seperate table.

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