function findpartsnear(part)
    local pos = part.Position
    local parts = {}
    local ray1 = Ray.new(part.Position,Vector3.new(pos.X,pos.Y,pos.Z - 7 ))
    local ray2 = Ray.new(part.Position,Vector3.new(pos.X,pos.Y,pos.Z + 7 ))
    local ray3 = Ray.new(part.Position,Vector3.new(pos.X,pos.Y - 7,pos.Z))
    local ray4 = Ray.new(part.Position,Vector3.new(pos.X,pos.Y + 7,pos.Z))
    local ray5 = Ray.new(part.Position,Vector3.new(pos.X - 7,pos.Y ,pos.Z))
    local ray6 = Ray.new(part.Position,Vector3.new(pos.X + 7,pos.Y,pos.Z))
    local part1,position1 = workspace:FindPartOnRay(ray1,nil,true,false)
    local part2,position2 = workspace:FindPartOnRay(ray2,nil,true,false)
    local part3,position3 = workspace:FindPartOnRay(ray3,nil,true,false)
    local part4,position4 = workspace:FindPartOnRay(ray4,nil,true,false)
    local part5,position5 = workspace:FindPartOnRay(ray5,nil,true,false)
    local part6,position6 = workspace:FindPartOnRay(ray6,nil,true,false)
    if part1 then
        parts[#parts+1] = part1
    end
    if part2 then
        parts[#parts+1] = part2
    end
    if part3 then
        parts[#parts+1] = part3
    end
    if part4 then
        parts[#parts+1] = part4
    end
    if part5 then
        parts[#parts+1] = part5
    end
    if part6 then
        parts[#parts+1] = part6
    end
    return parts
end
function findabove(part)
    local pos = part.Position
    local ray = Ray.new(part.Position,Vector3.new(0, 7,0))
    local part,position = workspace:FindPartOnRay(ray,nil,true,false)
    if part then
        return part
    end
end
function checkifgrassblock(part)
    if part.Material == Enum.Material.Grass and part.BrickColor == BrickColor.new("Camo") then
        return true
    else
        return false
    end
end
function checkifsnow(part)
    if part.Material == Enum.Material.Slate and part.BrickColor == BrickColor.new("Institutional white") then
        return true
    else
        return false
    end
end
function checkifstone(part)
    if part.Material == Enum.Material.Slate and part.BrickColor == BrickColor.new("Medium stone grey") then
        return true
    else
        return false
    end
end
local threshold = 30
local snowthreshold = 145
local grassthreshhold = 0
local folder = workspace.TerrainParts
local maxX = 150
local maxY = 100
local maxZ = 150
local maxnoise = 41
local amplitude = 20
local blocksize = 4
function generate()
local seed = math.random(1,1000000)
    for x = 0,maxX do
        for z = 0, maxZ do
            for y = maxY,0,-1 do
                local xnoise = math.noise(y/maxnoise,z/maxnoise,seed) * amplitude
                local ynoise = math.noise(x/maxnoise,z/maxnoise,seed) *amplitude
                local znoise = math.noise(x/maxnoise,y/maxnoise,seed) * amplitude
                local density = xnoise + ynoise + znoise + y
                if density < threshold then
                    local part = Instance.new("Part",folder)
                    part.Anchored = true
                    part.Size = Vector3.new(blocksize,blocksize,blocksize)
                    part.CFrame = CFrame.new(x*blocksize,y*blocksize,z*blocksize)
                    local partabove = findabove(part)
                        if part.Position.Y >= snowthreshold then
                            part.Material = Enum.Material.Slate
                            part.BrickColor = BrickColor.new("Institutional white")
                        elseif part.Position.Y >= grassthreshhold then
                            part.Material = Enum.Material.Grass
                            part.BrickColor = BrickColor.new("Camo")
                        end
                        if partabove then
                            if checkifgrassblock(partabove) == true  or checkifstone(partabove) == true then
                                part.Material = Enum.Material.Slate
                                part.BrickColor = BrickColor.new("Medium stone grey")
                            end
                        end
                end
            end
            game:GetService("RunService").Heartbeat:Wait()
        end
        game:GetService("RunService").Heartbeat:Wait()
    end
end
generate()