Turtle house builder

--block in front of turtle at beginning is bottom left corner
--when viewed from above
-- 1 = Wall
-- 2 = Roof
-- 3 = Door
-- 4 = Chest
-- 5 = Crafting table
-- 6 = Bed

-- 16 = Fuel

local wallIndex = 1
local roofIndex = 2
local doorIndex = 3
local chestIndex = 4
local craftIndex = 5
local bedIndex = 6
local fuelIndex = 16

function forceMoveLeft()
    turtle.turnLeft()
    forceMoveForward()
    turtle.turnRight()
end

function forceTurnLeft()
    turtle.turnLeft()
    forceMoveForward()
end

function forceMoveRight()
    turtle.turnRight()
    forceMoveForward()
    turtle.turnLeft()
end

function forceMoveUp()
    while not turtle.up() do
        turtle.digUp()
    end
end

function forceMoveDown()
    while not turtle.down() do
        turtle.digDown()
    end
end

function forceMoveBack()
    turtle.turnLeft()
    turtle.turnLeft()
    forceMoveForward()
    turtle.turnLeft()
    turtle.turnLeft()
end

function forceMoveForward()
    refuel()
    while not turtle.forward() do
        turtle.dig()
    end
end

function refuel()
    if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 10 then
        print("Refuelling")
        turtle.select(fuelIndex)
        turtle.refuel(1)
    end
end

function fillInDirection(length, height, blockIndex)

    for h = 1, height do
        --move to just before the end
        for i = 1, length do
            forceMoveForward()
        end

        --now move backwards, placing blocks
        print("Placing row")
        for l = 1, length do
                turtle.back()
                placeByIndex(blockIndex)
        end

        forceMoveUp()
    end
    print("Resetting height")
    --reset to original position
    for h = 1, height do
        turtle.down()
    end
end

function placeByIndex(index)
    turtle.select(index)
    turtle.place()
end

function buildRoom()
    print("Building left wall")
    fillInDirection(3,2,wallIndex) --left wall

    turtle.turnRight()
    print("Building front wall")
    fillInDirection(3,2,wallIndex) -- front wall


    print("Adding door space to front wall")
    --clear the door part of the wall and place door
    forceMoveRight()
    forceMoveForward()
    forceMoveForward()
    forceTurnLeft() -- clear bottom half of door
    forceMoveUp() -- clear top half of door
    turtle.down()
    turtle.back()

    --move to the end of the front wall on the right
    turtle.turnRight()
    forceMoveForward()
    forceMoveForward()
    forceTurnLeft()

    print("Building right wall")
    fillInDirection(3,2,wallIndex) --right wall

    --move to place back wall
    forceMoveRight()
    forceMoveForward()
    forceMoveForward()
    forceMoveForward()
    forceMoveForward()
    forceTurnLeft()

    print("Building back wall")
    fillInDirection(3,2,wallIndex) --back wall

    print("Building the roof")
    forceMoveUp()
    forceMoveUp()
    forceMoveForward()
    turtle.turnLeft()
    fillInDirection(3,1,roofIndex)
    forceMoveRight()
    fillInDirection(4,1,roofIndex) --extra to cover door
    forceMoveRight()
    fillInDirection(3,1,roofIndex)
    forceMoveRight()

    print("Moving inside")
    for i = 1, 4 do
        forceMoveForward()
    end
    forceMoveDown()
    forceMoveDown()
    forceMoveForward()
    forceTurnLeft()
    forceMoveForward()
    turtle.turnLeft()

    forceMoveForward() -- on the threshold
    print("Clearing interior")
    forceMoveForward()

    --clear front inside
    forceMoveRight()
    turtle.digUp()
    forceMoveLeft()
    turtle.digUp()
    forceMoveLeft()
    turtle.digUp()

    --clear middle inside
    forceMoveForward()
    turtle.digUp()
    forceMoveRight()
    turtle.digUp()
    forceMoveRight()
    turtle.digUp()

    --clear back inside
    forceMoveForward()
    turtle.digUp()
    forceMoveLeft()
    turtle.digUp()
    forceMoveLeft()
    turtle.digUp()

    print("Placing interior items")
    --place interior items
    turtle.back()
    turtle.back()
    placeByIndex(bedIndex)
    forceMoveRight()
    turtle.forward()
    placeByIndex(chestIndex)
    forceMoveRight()
    placeByIndex(craftIndex)

    print("Placing door")
    --Lastly, place the door
    forceMoveLeft()
    turtle.back()
    turtle.back()
    turtle.back()
    placeByIndex(doorIndex)

    --move to next start point
    forceMoveRight()
    forceMoveRight()
    forceMoveForward()

    print("House complete!")
    print("Press enter to close")
    read()
end

--Do the things
buildRoom()