chess Bishop

--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 sideUp()
    select(3)
    turtle.place()
    turtle.up()

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


    select(3)
    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(3)
    turtle.place()
    turtle.up()

end

function sideDown()

    select(3)
    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(3)
    turtle.down()
    turtle.place()

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

    select(3)
    turtle.down()
    turtle.place()
end

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

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

    select(1)
    for i = 1,6 do
        turtle.up()
        turtle.placeDown()
    end

    turtle.up()
    select(4)
    turtle.placeDown()
    select(6)
    turtle.placeDown()

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

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

function returnToStart()
    for i = 1,6 do
        turtle.down()
    end

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

buildBase()
buildMid()
returnToStart()