BuildCube

function moveSafely()
    while(turtle.detect()) do
        turtle.dig()
    end
    turtle.forward()
end

function reverse()
    turtle.turnRight()
    turtle.turnRight()
end

function moveLeft(blocks)
    turtle.turnLeft()
    for i=1,blocks do
        turtle.forward()
    end
    turtle.turnRight()
end

function moveRight(blocks)
    turtle.turnRight()
    for i=1,blocks do
        turtle.forward()
    end
    turtle.turnLeft()
end

function moveForward(blocks)
    for i=1,blocks do
        turtle.forward()
    end
end

function moveBackwards(blocks)
    reverse()
    moveForward(blocks)
    reverse()
end

function prepareLine(amount)
    for i=1,amount do
        turtle.moveSafely()
    end
end

function prepare(x, y)
    local s = 1
    for i=1,4 do
        prepareLine(SizePairSwitch(1))
        s = s * -1
        turtle.turnLeft()
    end
end

function SizePairSwitch(num, x, y)
    if (num == 1) then
        return x
    else
        return y
    end
end

function placeBelowLine(amount)
    for i=1,amount-1 do
        turtle.placeDown()
        moveSafely()
    end
    turtle.placeDown()
end

function place(x, y)
    local s = 1
    for i=1,4 do
        placeBelowLine(SizePairSwitch(s, x, y))
        s = s * -1
        turtle.turnRight()
    end
end

function turnNum(num)
    if (num == 1) then
        turtle.turnRight()
        turtle.dig()
        turtle.forward()
        turtle.turnRight()
    else
        turtle.turnLeft()
        turtle.dig()
        turtle.forward()
        turtle.turnLeft()
    end
end

function digAllLine(amount)
    for i=1,amount-1 do
        turtle.dig()
        moveSafely()
    end
end

function backToStart(x, y)
    if(x % 2 == 0) then
        moveRight(x-1)
        reverse()
    else
        moveLeft(x-1)
        moveBackwards(y-1)
    end
end

function digFloor(x, y)
    local s = 1
    for i=1,x-1 do
        digAllLine(y)
        turnNum(s)
        s = s * -1
    end
    digAllLine(y)
    backToStart(x, y)
end

function placeFloor(x, y)
    local s = 1
    for i=1,x-1 do
        placeBelowLine(y)
        turnNum(s)
        s = s * -1
    end
    placeBelowLine(y)
    backToStart(x, y)
end

function main(x, y, h)
    --turtle.digDown()
    --turtle.down()
    --digFloor(x, y)
    --turtle.up()
    --placeFloor(x, y)
    --for i=1,h-2 do
    for i=1,h do
        turtle.up()
        place(x, y)
    end
    turtle.up()
    placeFloor(x, y)
end

print("length(right):")
local x = tonumber(read())
print("width(forward):")
local y = tonumber(read())
print("height:")
local h = tonumber(read())

main(x, y, h)