chess Pawn

--TODO: add return to start

tArgs = {...}
color = tArgs[1]
function select(i)
    turtle.select(i+ (color == "white" and 0 or 6))
end


function buildBase()
        select(1)
        for y = 1,5 do
                for x = 1,4 do
                                        turtle.placeDown()
                                        turtle.forward()
                end
            if y < 5 then
                if y%2 ~= 0 then
                                        turtle.turnRight()
                                        turtle.placeDown()
                                        turtle.forward()
                                        turtle.turnRight()
                else
                                        turtle.turnLeft()
                                        turtle.placeDown()
                                        turtle.forward()
                                        turtle.turnLeft()
                end
                        end
        end
        turtle.placeDown()
end


function buildMid()
    turtle.back()
    turtle.back()
    turtle.turnLeft()
    turtle.forward()
    turtle.forward()

    for i = 1,4 do
        turtle.up()
        turtle.placeDown()
    end

    select(4)
    turtle.up()
    turtle.placeDown()

    turtle.back()
    turtle.back()
    turtle.down()

    sideDown()
    turnCorner()
    sideUp()
    turnCorner()
    sideDown()
    turnCorner()
    sideUp()

end

 function turnCorner()
        turtle.turnRight()
        turtle.forward()
        turtle.forward()
        turtle.turnLeft()
        turtle.forward()
        turtle.forward()
        turtle.turnLeft()
 end

 function sideUp()

    select(4)
    turtle.place()
    turtle.up()
    turtle.place()
    turtle.up()

    select(2)
    turtle.place()
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
    turtle.place()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnRight()
    turtle.up()

    select(4)
    turtle.place()
    turtle.up()


end

function sideDown()

    select(4)
    turtle.down()
    turtle.place()

    select(2)
    turtle.down()
    turtle.place()
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
    turtle.place()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnRight()

    select(4)
    turtle.down()
    turtle.place()
    turtle.down()
    turtle.place()

end

function returnToStart()

    for i = 1,4 do
    turtle.down()
    end
    turtle.turnLeft()
    turtle.forward()
    turtle.forward()
    turtle.turnRight()
end

buildBase()
buildMid()
returnToStart()