pltfrm v0.6

--Prompt

term.clear()
term.setCursorPos(1,1)
print("+-------------------------------------+")
print("|  Please place fuel in the lower-    |")
print("|  right slot.                        |")
print("|  Place building materials in the    |")
print("|  remaining slots.                   |")
print("+-------------------------------------+")
sleep(1)
print("How big of a square do you want? ")

sqrSize = read()

function placeDown()
  if turtle.placeDown() == false then
    checkSlot()
  end
  turtle.placeDown()
end

print("How tall (On the inside) do you want it? ")

sqrTall = read()

--Functions

function plcColumn()
  for i = 1, sqrSize do
    placeDown()
    turtle.forward()
  end
end

--Even Column Placement

function aa()
    plcColumn()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
end

--Odd Column Placement

function ab()
    plcColumn()
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
    turtle.forward()
end

--Build a square Platform

function fltSqr()
  if isEven == true then
    for i = 1, sqrSize/2 do
      aa()
      ab()
    end
  else
    for i = 1, sqrSize/2 do
      aa()
      ab()
    end
    aa()
  end
end

--Build the walls of the structure

function bldWall()
  for i = 1, 4 do
      for i = 1, sqrSize do
          placeDown()
          turtle.forward()
      end
      turtle.turnLeft()
  end
turtle.up()
end

--Change slot selection when you run out of materials

function checkSlot()
  for i = 1, 15 do
      if itemCount == 0 then
        slotNum = slotNum + 1
        turtle.select(slotNum)
      end
  end
end

--Variables

if sqrSize %2 == 0 then
  isEven = true
else
  isEven = false
end

slotNum = 1

itemCount = turtle.getItemCount(slotNum)


--Tests for Variables (Comment out to disable)
print(isEven)
print(slotNum)
print(itemCount)

--The actual build program

fltSqr()
turtle.turnRight(2)
turtle.forward()
turtle.up()
for i = 1, sqrTall do
  bldWall()
end
fltSqr()