buildspiral

local platformRadius = 10
local height = 50
local gap = 4
local blockCount = 0
local steps = 0
local requiredFuel = 0.5 * (height/3 * (platformRadius + 0.5) ^ 2 - (height-gap)*(platformRadius + 0.5-gap)^2)

local chestSide = "front" -- set this to the side where the chest is located, e.g. "left", "right", "front", "back", or "up"

function move()
  while not turtle.forward() do
    turtle.dig()
  end
end

function turnRight()
  turtle.turnRight()
  move()
  turtle.turnRight()
end

function turnLeft()
  turtle.turnLeft()
  move()
  turtle.turnLeft()
end

function buildLayer()
  for i = 1, platformRadius do
    turtle.placeDown()
    turnLeft()
    turtle.placeDown()
    turnRight()
  end
end

function buildPlatform()
  print("Checking Fuel...")
  if turtle.getFuelLevel() < requiredFuel then
    print("Error: Not enough fuel to complete the platform!")
    return false
  end

  print("Counting blocks needed...")
  local blocksNeeded = (height / gap) * platformRadius * 2

  print("Blocks needed: ", blocksNeeded)
  print("Fuel needed: ", requiredFuel)

  print("Building Platform...")
  while blockCount < height do
    buildLayer()
    blockCount = blockCount + (2 * platformRadius)
    platformRadius = platformRadius + gap
    steps = steps + 1
    if steps == 2 then -- adjust for the double layer in the first step
      platformRadius = platformRadius - 1
    end
  end

  print("Returning to chest...")
  turtle.turnLeft()
  turtle.turnLeft()

  while blockCount > 0 do
    turtle.digDown()
    move()
    blockCount = blockCount - 1
    if blockCount == 0 then
      for i = 1, 16 do -- loop through all inventory slots
        turtle.select(i)
        if turtle.getItemCount() > 0 then -- check if slot is not empty
          turtle.dropDown() -- drop item below
        end
      end
      turtle.refuel()
      platformRadius = 10 -- reset platform radius for new platform
      break
    end
  end

  print("Restocking...")
  turtle.select(1) -- select the first slot
  turtle.suck() -- suck items from chest into inventory
  turtle.suckUp() -- suck fuel from chest into inventory
  return true
end

print("Checking Fuel...")
if turtle.getFuelLevel() < requiredFuel then
  print("Error: Not enough fuel to start the platform!")
  return
end

while true do
  if buildPlatform() == false then
    print("Pausing for 30 seconds to allow restocking...")
    sleep(30)
  end
end