Cube World Voxel Terrain Generation

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#1

so, again. I’m making a voxel game similar to cube world, and I wanted to know how to generate mountain and mountain overhangs like cubeworld.

here is the script

local seed = math.random(1,1)
local mapSize = 500

local coveredBlocks = {} 

for xAxis = 1, mapSize do
	for zAxis = 1, mapSize do
		local noise = math.noise(seed, xAxis/60, zAxis/60)*8
		local block = script.Parent.Block:Clone()
		local yPos = noise
		if yPos <= -3 then  
		block.BrickColor = BrickColor.new("Shamrock")
		end
		if yPos >= 2 then  
		block.BrickColor = BrickColor.new("Dark stone grey")
		end
		block.Position = Vector3.new(xAxis*4, math.floor(noise)*3, zAxis*4)
		block.Parent = workspace.RandomGeneratedMap

		if math.random(1, 5000) == 1 then

			if xAxis <= 1 or zAxis <= 1 or xAxis >= mapSize-1 or zAxis >= mapSize-1 then continue end

			noise = math.floor(noise)

			local flat = true
			for x = -1, 1 do
				if coveredBlocks[(xAxis+x)] == nil then coveredBlocks[(xAxis+x)] = {} end 
				for z = -1, 1 do
					if coveredBlocks[(xAxis+x)][(zAxis+z)] or noise ~= math.floor(math.noise(seed, (xAxis+x)/60, (zAxis+z)/60)*8) then
						flat = false
						break
					end
				end
			end

			if flat then
				local structure = script.Parent["Life Shrine"]:Clone()
				structure.Parent = workspace.RandomGeneratedMap.Structures
				structure:MoveTo(block.Position)

				for x = -1, 1 do
					if coveredBlocks[(xAxis+x)] == nil then coveredBlocks[(xAxis+x)] = {} end 

					for z = -1, 1 do
						coveredBlocks[(xAxis+x)][(zAxis+z)] = true
					end
				end
			end
		end
	end
end

of course, you don’t need to change the entire script and send it to me, I just want to know what I can change or implement to make mountains and overhangs

Mountain overhangs:
image

Mountains:
image
image

1 Like
#2

I have this example that does some of what you’re looking for.

--Terrain size
local Sx = 40
local Sy = 16
local Sz = 40

local partPrototype = Instance.new("Part")
partPrototype.Anchored = true
partPrototype.Size = Vector3.one
partPrototype.TopSurface = Enum.SurfaceType.Smooth
partPrototype.BottomSurface = Enum.SurfaceType.Smooth

--Scale of terrain in XZ direction
local scale = 4.0

--Scale of undercut effect
local qscale = 6.0

--How strong the undercut effect is
local qpower = 0.75

--Raise terrain this much extra
local yoffset = 5.0

for x = 1, Sx do
	for z = 1, Sz do
		
		local height = (Sy * math.noise(x / Sx * scale, 0, z / Sz * scale) + Sy) / 2.0
		
		for y = 1, Sy do
			
			local height3d = (Sy * math.noise(x / Sx * scale, y / Sy * qscale, z / Sz * scale) + Sy) / 2.0
			
			if height - height3d * qpower + yoffset > y then
				local part = partPrototype:Clone()
				part.Position = Vector3.new(x, y, z)
				part.Parent = workspace
				part.Color = Color3.fromRGB(x / Sx * 255, y / Sy * 255, z / Sz * 255)
			end
		end
	end
end
3 Likes
#3

Many thanks for your assistance.

1 Like
#4

You should not use math.random for terrain generation. Use Random.new(seed):NextInteger() and math.noise(seed, x, y). This is so the generation is always the same with the same seed.

3 Likes
#5

alright, I appreciate your assistance

1 Like