BUILD_HOUSE.lua

nadkarnik

Jul 4th, 2025

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-- === Utility Functions ===
function selectNextSlot()
for i = 1, 16 do
local slot = (turtle.getSelectedSlot() % 16) + 1
turtle.select(slot)
if turtle.getItemCount() > 0 then return true end
end
return false
end
function placeBlockDown()
while not turtle.placeDown() do
if turtle.getItemCount() == 0 and not selectNextSlot() then
error("Out of blocks!")
end
sleep(0.1)
end
end
function placeBlockUp()
while not turtle.placeUp() do
if turtle.getItemCount() == 0 and not selectNextSlot() then
error("Out of blocks!")
end
sleep(0.1)
end
end
function placeBlockForward()
while not turtle.place() do
if turtle.getItemCount() == 0 and not selectNextSlot() then
error("Out of blocks!")
end
sleep(0.1)
end
end
function forwardSafe()
while not turtle.forward() do
turtle.dig()
sleep(0.1)
end
end
function upSafe()
while not turtle.up() do
turtle.digUp()
sleep(0.1)
end
end
function downSafe()
while not turtle.down() do
turtle.digDown()
sleep(0.1)
end
end
-- === Structure Building Functions ===
function buildFloor(length, width)
for w = 1, width do
for l = 1, length do
placeBlockDown()
if l < length then forwardSafe() end
end
if w < width then
if w % 2 == 1 then
turtle.turnRight()
forwardSafe()
turtle.turnRight()
else
turtle.turnLeft()
forwardSafe()
turtle.turnLeft()
end
end
end
-- Return to starting corner and original facing
if width % 2 == 1 then
turtle.turnRight()
for i = 1, length - 1 do turtle.back() end
turtle.turnRight()
else
turtle.turnLeft()
for i = 1, length - 1 do turtle.back() end
turtle.turnLeft()
end
for i = 1, width - 1 do turtle.back() end
end
local function placeWallColumn(height)
upSafe() -- Move above floor level (y=2)
for h = 2, height - 1 do
placeBlockForward()
if h < height - 1 then upSafe() end
end
for h = 2, height - 1 do downSafe() end -- Return down to floor
end
local function buildWallSide(distance, height)
for i = 1, distance do
placeWallColumn(height)
if i < distance then forwardSafe() end
end
end
function buildWalls(length, width, height)
-- Start at corner facing length side
buildWallSide(length, height)
turtle.turnRight()
buildWallSide(width, height)
turtle.turnRight()
buildWallSide(length, height)
turtle.turnRight()
buildWallSide(width, height)
turtle.turnRight()
-- Finished walls, back at start facing original direction
end
function buildCeiling(length, width, height)
-- Move up to ceiling level
for i = 1, height - 1 do upSafe() end
-- Place ceiling (like floor but above)
for w = 1, width do
for l = 1, length do
placeBlockDown()
if l < length then forwardSafe() end
end
if w < width then
if w % 2 == 1 then
turtle.turnRight()
forwardSafe()
turtle.turnRight()
else
turtle.turnLeft()
forwardSafe()
turtle.turnLeft()
end
end
end
-- Return to starting corner and original facing below ceiling
if width % 2 == 1 then
turtle.turnRight()
for i = 1, length - 1 do turtle.back() end
turtle.turnRight()
else
turtle.turnLeft()
for i = 1, length - 1 do turtle.back() end
turtle.turnLeft()
end
for i = 1, width - 1 do turtle.back() end
for i = 1, height - 1 do downSafe() end
end
function buildHollowBox(length, width, height)
if length < 2 or width < 2 or height < 2 then
error("❌ Dimensions must be at least 2x2x2.")
end
if turtle.getFuelLevel() == 0 then
error("❌ Turtle needs fuel! Use turtle.refuel().")
end
if turtle.getItemCount() == 0 and not selectNextSlot() then
error("❌ No blocks in inventory.")
end
print("▶ Building floor...")
buildFloor(length, width)
print("▶ Building walls...")
buildWalls(length, width, height)
print("▶ Building ceiling...")
buildCeiling(length, width, height)
print("✅ Done!")
end
-- === Menu Prompt ===
function promptNumber(prompt)
while true do
io.write(prompt)
local input = read()
local number = tonumber(input)
if number and number >= 2 then
return math.floor(number)
else
print("Please enter a number ≥ 2.")
end
end
end
-- === Main Program ===
print("=== Build Hollow Structure ===")
local len = promptNumber("Enter length (≥2): ")
local wid = promptNumber("Enter width (≥2): ")
local hei = promptNumber("Enter height (≥2): ")
print("▶ Starting build: " .. len .. " x " .. wid .. " x " .. hei)
buildHollowBox(len, wid, hei)

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