term.clear()
term.setCursorPos(1,1)
write("Welcome to the Mining program.\n The Turtle will mine a prism that's to the left, forward, and below.\n GUI by Pdan4, code by David341.")
write("Prism will begin after pressing enter after filling the DEPTH query.\n")


local a
local b
local c



write("\n \nBlocks forward? ")
local length = read()

write("\nBlocks left? ")
local width = read()

write("\nBlocks down? ")
local depth = read()


if depth%2 == 1 then
  c= 1
else
  c=0
end

if length%2 == 1 then
  a= 0
else
  a=1*c
end

if width%2 == 1 then
  b= 0
else
  b=1*c
end




for d=1, depth do
  for w=1, width do
  turtle.dig()
  turtle.digDown()

    for l=2, length do
    turtle.dig()
    turtle.forward()
    turtle.digDown()

    end

  if width-w>0 then
    if (w+a*b*c)%2>b then
      turtle.turnRight()
      turtle.forward()
      turtle.turnRight()
      end

    if (w+a*b*c)%2<=b then
      turtle.turnLeft()
      turtle.forward()
      turtle.turnLeft()
      end
   end
  end
turtle.down()
turtle.turnLeft()
turtle.turnLeft()

end