tunnel2

-- ========================
-- == tunnel2
-- ========================
dofile("turtleMoveApi")
DEFAULT_HEIGHT = 4
DEFAULT_WIDTH = 4
args = { ... }
if 0 == #args then
    print("usage")
    print("  tunnel2 depth <height> <width>")
    print("arguments")
    print("  depth  : forward direction")
    print("  height : upward direction. default is " .. tostring(DEFAULT_HEIGHT))
    print("  width  : right direction. default is " .. tostring(DEFAULT_WIDTH))
    return
end
depth = tonumber(args[1])
if 2 <= #args then height = tonumber(args[2]) else height = DEFAULT_HEIGHT end
if 3 <= #args then width  = tonumber(args[3]) else width  = DEFAULT_WIDTH  end
registScript(
    rep(depth,
        rep(width,
            rep(height-1,e0,u),
            rep(height-1,d),
            anotherLast({r,e1,f,l}, {})
        ),
        l,
        rep(width-1,f),
        r,e1,f
    )
)
executeScript()