if getKeyState("mouse1") then
            if #currentLine == 0 then
                table.insert(currentLine, {x, y, z})
            else
                local xd = x - currentLine[#currentLine][1]
                local yd = y - currentLine[#currentLine][2]
                local zd = z - currentLine[#currentLine][3]
                local distance = math.sqrt(xd*xd + yd*yd + zd*zd)

                if distance > 2 then
                    table.insert(currentLine, {x, y, z+0.1})
                end
            end
        end