mason

local scriptName = "mason"
local args = {...}

if #args < 3 then
    print("Usage: " .. scriptName .. " <width> <height> <channel>")
    return
end

local WIDTH = tonumber(args[1])
local HEIGHT = tonumber(args[2])
local CHANNEL = args[3]

if not COLOR_CHANNELS[CHANNEL] then
    print(CHANNEL .. " is not a valid color channel.")
    return
end

dofile("turtle_bot")
local t = TurtleBot.new(scriptName, "North")
t:connect()

local function selectBlocks()
    for k,v in pairs(t:inventory()) do
        if v.name ~= ITEMS.enderChest.name then
            turtle.select(v.slot)
            break
        end
    end
end

local function place(direction)
    local placeFunc = turtle.place
    if direction == "up" then
        placeFunc = turtle.placeUp
    elseif direction == "down" then
        placeFunc = turtle.placeDown
    end

    selectBlocks()
    placeFunc()
end

local function standardSegment()
    place()
    place("down")
    place("up")
end


local function firstSegment()
    place("down")
    place("up")
end


local function lastSegment()
    place()
    place("down")
    t:up()
    place("down")
    t:up()
    place("down")
end


local function turnAround()
    t:right()
    t:right()
end


local function build()
    for h=1, HEIGHT, 3 do
        t:up()
        turnAround()
        firstSegment()
        t:back()
        for w=1, WIDTH - 2 do
            standardSegment()
            t:back()
        end
        lastSegment()
    end
end


local function collectBlocks()
    local stacks = math.ceil(HEIGHT * WIDTH / 64)
    for i=1, stacks do
        t:enderCollect(COLOR_CHANNELS[CHANNEL], 64)
    end
    t:dig("up")
end


local function main()
    collectBlocks()
    build()
end

t:execute(main)