mydance2.lua

local isUp = false
local isBack = false
local danceMove
print('Hold Ctrl-T to stop dancing.')
while true do
    danceMove = math.random(1, 5)

    if danceMove == 1 then
        -- turn left
        print('Turn to the left!')
        turtle.turnLeft()

    elseif danceMove == 2 then
        -- turn right
        print('Turn to the right!')
        turtle.turnRight()

    elseif danceMove == 3 then
        -- forward/back moves
        if isBack then
            print('Move forward!')
            turtle.forward()
            isBack = false
        else
            print('Move back!')
            turtle.back()
            isBack = true
        end

    elseif danceMove == 4 then
        -- up/down moves
        if isUp then
            print('Get down!')
            turtle.down()
            isUp = false
        else
            print('Get up!')
            turtle.up()
            isUp = true
        end

    else
        -- spin around
        print('Spin!')
        for i = 1,4 do
            turtle.turnLeft()
        end
    end
end