function place()
    while turtle.getItemCount(select) == 0 do
      select = select +1;
      turtle.select(select);
    end
    turtle.placeUp();
end

function blah(i)
  for x=1,i do
    turtle.forward();
    place();
  end;
end;

local tArgs = { ... }
if #tArgs ~= 2 then
	print( "Usage: platform <height> <size>" )
	return
end

local height = tonumber( tArgs[1] )
local size = tonumber( tArgs[2] )
select = 1;
sum = 0;

if turtle.getFuelLevel() < size*size + size + 2* height then
  print("more fuel plz");
  return;
end;


for i = 1,16 do
  turtle.select(i);
  sum = sum + turtle.getItemCount(i);
end;

if sum < size*size then
  print("more block plz");
  return;
end

turtle.select(1);



for y=1,height do
  turtle.up();
end;

for z=1,size/2 do
  place();
  blah(size-1);
  turtle.turnRight();
  turtle.forward();
  turtle.turnRight();
  place();
  blah(size-1);
  turtle.turnLeft();
  turtle.forward();
  turtle.turnLeft();
end;

turtle.turnLeft();
for z=1,size do
  turtle.forward();
end;
turtle.turnRight();

for y=1,height do
  turtle.down();
end;

print("done");