Automatic Terrain Generation[Local]

local baseHeight        = 29            -- The main height factor for the terrain.
local chunkScale        = 12                -- The grid scale for terrain generation. Should be kept relatively low if used in real-time.
local renderDist        = 180/4             -- The length/width of chunks in voxels that should be around the player at all times
local xScale            = 95/4              -- How much we should strech the X scale of the generation noise
local zScale            = 95/4              -- How much we should strech the Z scale of the generation noise
local generationSeed    = math.random()     -- Seed for determining the main height map of the terrain.

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local chunks = {}

function chunkExists(chunkX,chunkZ)
    if not chunks[chunkX] then
        chunks[chunkX] = {}
    end
    return chunks[chunkX][chunkZ]
end

function mountLayer(x,heightY,z,material)
    local begY = -baseHeight
    local endY = heightY
    workspace.Terrain:FillBlock(CFrame.new(x*4+2, (begY+endY)*4/2, z*4+2), Vector3.new(4, (endY-begY)*4, 4), material)
end

function makeChunk(chunkX,chunkZ)
    local rootPos = Vector3.new(chunkX*chunkScale,0,chunkZ*chunkScale)
    chunks[chunkX][chunkZ] = true -- Acknowledge the chunk's existance.
    for x = 0,chunkScale-1 do
        for z = 0,chunkScale-1 do
            local cx = (chunkX*chunkScale) + x
            local cz = (chunkZ*chunkScale) + z
            local noise = math.noise(generationSeed,cx/xScale,cz/zScale)
            local cy = noise*baseHeight
            local Z = math.random(0,20)
            if Z == 1 then
            Choice = Enum.Material.Grass
            elseif Z == 2 then
            Choice = Enum.Material.Grass
            elseif Z == 3 then
            Choice = Enum.Material.Grass
            elseif Z == 4 then
            Choice = Enum.Material.Grass
            elseif Z == 5 then
            Choice = Enum.Material.Grass
            elseif Z == 6 then
            Choice = Enum.Material.Grass
            elseif Z == 7 then
            Choice = Enum.Material.Grass
            elseif Z == 8 then
            Choice = Enum.Material.Rock
            elseif Z == 9 then
            Choice = Enum.Material.Ground
            elseif Z == 10 then
            Choice = Enum.Material.Grass
            elseif Z == 11 then
            Choice = Enum.Material.Rock
            elseif Z == 12 then
            Choice = Enum.Material.Ground
            elseif Z == 13 then
            local Lemon = "Potato"
            elseif Z == 14 then
            Choice = Enum.Material.Grass
            elseif Z == 15 then
            Choice = Enum.Material.Grass
            elseif Z == 16 then
            Choice = Enum.Material.Grass
            elseif Z == 17 then
            Choice = Enum.Material.Grass
            elseif Z == 18 then
            Choice = Enum.Material.Ground
            elseif Z == 19 then
            Choice = Enum.Material.Grass
            elseif Z == 20 then
            Choice = Enum.Material.Rock
            end
            mountLayer(cx,cy,cz,Choice)
            mountLayer(cx,cy-2,cz,Choice)--Makes sure u cant fall and die
        end
    end
end

function checkSurroundings(location)
    local chunkX,chunkZ = math.floor(location.X/4/chunkScale),math.floor(location.Z/4/chunkScale)
    local range = math.max(1,renderDist/chunkScale)
    for x = -range,range do
        for z = -range,range do
            local cx,cz = chunkX + x,chunkZ + z
            if not chunkExists(cx,cz) then
                makeChunk(cx,cz)
            end
        end
    end
end

while true do
    for _,player in pairs(game.Players:GetPlayers()) do
        if player.Character then
            local torso = player.Character:FindFirstChild("Torso")
            if torso then
                checkSurroundings(torso.Position)
            end
        end
    end
    wait(1)
end