build_room

-- Room builder
-- Can build any box shaped rooms of any size (WxDXH)
-- Will auto select slot for fuel and build materials
-- If it runs out of fuel or material mid build it will pause and wait for more
--
-- Made by Amumia amumia.pyramid at gmail dot com
-- Use at your own risk

function buildPlatform(width, depth)
    realWidth = width + 1
    realDepth = depth + 1
    for i = 1, realWidth do
        for j = 1, realDepth do
            checkCanContinue()
            turtle.placeDown()
            if not (realDepth == j) then
                turtle.forward()
            end
        end

        if not (realWidth == i) then
            -- Change row
            if (i % 2) == 0 then
                turtle.turnLeft()
            else
                turtle.turnRight()
            end
            turtle.forward()
            if (i % 2) == 0 then
                turtle.turnLeft()
            else
                turtle.turnRight()
            end
        end
    end
end

function build4Walls(width, depth, height)
    for i = 1, height do
        turtle.up();
        for j = 1, 4 do
            if j % 2 == 0 then
                size = depth
            else
                size = width
            end

            checkCanContinue()
            turtle.placeDown()
            for k = 1, size do
                turtle.forward()
                checkCanContinue()
                turtle.placeDown()
            end
            turtle.turnRight()
        end
    end
end

function selectMaterialSlot()
    hasMaterials = false
    while not hasMaterials do
        for i = 1, 16 do
            if turtle.getItemCount(i) > 0 then
                turtle.select(i)
                currentSlot = i
                print("Selecting slot " .. i .. " with " .. turtle.getItemCount(i) .. "units")
                hasMaterials = true
                break
            end
        end
        if not hasMaterials then
            print("Need more materials. Press key to continue")
            io.read()
        end
    end
end

function checkSlotHasMaterial(slot)
    if turtle.getItemCount(slot) <= 0 then
        selectMaterialSlot()
    end
end

function checkFuelLevel()
    if turtle.getFuelLevel() <= 10 then
        shell.run("refuel all")
        while turtle.getFuelLevel() <= 0 do
            print("Need more fuel. Press key to continue")
            io.read()
            shell.run("refuel all")
        end
    end
end

function checkCanContinue()
    checkFuelLevel()
    checkSlotHasMaterial(currentSlot)
end

currentSlot = 1

print("Room builder")
print("Width:")
width = io.read()
width = tonumber(width) + 1
print("Depth:")
depth = io.read()
depth = tonumber(depth) + 1
print("Height:")
height = io.read()
height = tonumber(height)

-- Prepare for building (fuel and materials)
checkCanContinue()

-- Position to start floor
if turtle.detectDown() then
    turtle.up();
end

-- Build floor
buildPlatform(width, depth)

-- Position to build walls
if depth > width then
    turtle.turnLeft()
    for i = 1, width do
        turtle.forward()
    end
    turtle.turnLeft()
    sleep(1)
    turtle.turnLeft()
elseif width > depth then
    turtle.turnLeft()
    turtle.turnLeft()
    for i = 1, depth do
        turtle.forward()
    end
    turtle.turnRight()
else
    if not ((width + 1) % 2 == 0) then
        turtle.turnRight()
    end
    turtle.turnRight()
end

-- Build walls
build4Walls(width, depth, height)

-- Position to build ceiling
turtle.up()
for i = 1, width do
    turtle.forward()
end
turtle.turnRight()

-- Build ceiling
buildPlatform(width, depth)