--[[ Modules for generation or building vertical circles in 
--various forms which are filled. Good for underwater bases
--written by TheLux
--Check https://i.redd.it/swn3e9w8dyc31.jpg to see
--the references for the numbers]]

-- Check if the modules API is present
-- and load it. We need it
if not os.loadAPI('modules.lua') then
  error('Error! modules.lua is missing. Please insert it into turtle.')
end

--initial_full_circle_setup() checks if there is enough
--material and sets the turtle to the start
--position and places the first block.
--Alle circles uses this function
function initial_full_circle_setup(omaterial, omaterial_count, imaterial, imaterial_count)
  -- Check if we have enough material
  if modules.count_inventory(omaterial) < omaterial_count then
    error('Error! Not enough blocks of ' .. omaterial .. '. You need ' .. omaterial_count .. omaterial)
    return false
  end

  if modules.count_inventory(imaterial) < imaterial_count then
    error('Error! Not enough blocks of ' .. imaterial .. '. You need ' .. imaterial_count .. imaterial)
    return false
  end

  turtle.up()
end
 
--fvcircle5 builds a vertical 5 by 5 circle 
--which are filled with another material
function fvcircle5(omaterial, imaterial, times)
 
  -- times checks how often this function should be called
  -- this is only for checking, if we have enough blocks in
  -- our inventory
  times = times or 1 
  omatcount = 12 * times
  imatcount = 9 * times

  -- Start the initial Setup and place the turtle in
  -- the right position
  fvcircles.initial_full_circle_setup(omaterial, omatcount, imaterial, imatcount)


  -- First Row
  turtle.turnLeft()
  turtle.back()
  turtle.back()
  for i = 1, 3 do
    modules.select_and_place_down(omaterial)
    turtle.forward()
  end
  turtle.up()
  -- Second and Third and Fourth Row
  for i = 1, 3 do
    turtle.turnLeft()
    turtle.turnLeft()
    modules.select_and_place_down(omaterial)
    turtle.forward()
    modules.select_and_place_down(imaterial)
    turtle.forward()
    modules.select_and_place_down(imaterial)
    turtle.forward()
    modules.select_and_place_down(imaterial)
    turtle.forward()
    modules.select_and_place_down(omaterial)
    turtle.up()
  end

  -- Fifth and last row
  turtle.turnLeft()
  turtle.turnLeft()
  for i = 1, 3 do
    turtle.forward()
    modules.select_and_place_down(omaterial)
  end
  turtle.turnRight()
  turtle.forward()
  for i = 1, 5 do
    turtle.down()
  end

  print('Done building a filled and vertical 5 by 5 circle')
end