quarry

-- quarry - a simple quarry program
-- Version: 1.0.0
-- by @markman4897

-- Requires MPR library.

-- TODO:
-- - add more ways to understand arguments in
--   quarry function so it recognises
--    . xzy lengths
--    . 2 xz coords and y length
--    . 2 xzy choords
--
-- - add support for arguments to run this
--   program


-- =========
-- Variables
-- =========

-- Load MPR library

os.loadAPI("MPR")

-- Overwrite starting coords from MPR

MPR.set("x",109)
MPR.set("z",1021)
MPR.set("y",93)

MPR.set("dir",1)

-- Set quarry size
a = 5
b = 1
c = 2


-- =========
-- Functions
-- =========

-- Quarry function

function quarry(a,b,c)
    -- understand data
    line = a
    left = b
    depth = c

    -- depth loop
    for i=1,depth,1 do
        -- if first time, dont dig one down
        if i~= 1 then
            MPR.mine("down")
        end

        -- remember direction for turning
        d = MPR.get("dir")

        -- layer loop
        for ii=1,left,1 do
            MPR.mine("forw",a-1)
            if ii ~= left then
                if MPR.get("dir") == d then
                    MPR.turn("left")
                    MPR.mine("forw")
                    MPR.turn("left")
                else
                    MPR.turn("right")
                    MPR.mine("forw")
                    MPR.turn("right")
                end
            end
        end

        -- turn so walls are on left and back
        if MPR.get("dir") == d then
            MPR.turn("left",2)
        else
            MPR.turn("left")
        end
    end

    return true

end


-- ============
-- Main program
-- ============

-- Run the program

quarry(a,b,c)