Snapping to 3 stud grid in height with math.noise

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#1

I am currently attempting to create a random terrain generating script, with the terrain made of 3x3x3 parts. Currently I have it kind’ve working with a script I found and changed a tiny bit.

for x = 1,10 do
	for z = 1,10 do
		local p = Instance.new("Part",workspace)
		p.Anchored = true
		p.Size = Vector3.new(3,3,3)
		local height = (math.noise(x / 20, 3, z / 20) + 2) * 50
		p.Position = Vector3.new(3*x,height/2,3*z)
	end
end

This is what it will do:
image

However I want the height of the parts to be on a 3 stud grid, if that makes any sense. Like this:

image
image1918×1044 910 KB

Also, how would I implement a random “seed” to this, to determine how the terrain is generated?

#2

You would want to make one of the arguments in math.noise() random.

To make it snap to a three stud grid, you can use modulo to find the how much you need to subtract to make it snap to the three stud grid, and then subtract it.

local seed = math.random()
for x = 1,10 do
	for z = 1,10 do
		local p = Instance.new"Part"
		p.Anchored = true
		p.Size = Vector3.new(3,3,3)
		local height = (math.noise(x/20,z/20,seed)+2)*25
		p.Position = Vector3.new(3*x,height-height%3,3*z)
		p.Parent = workspace
	end
end
1 Like
#3

Just another question, how could I generate terrain as the player walks around?