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os.loadAPI("try")
os.loadAPI("check")
 
local dir = true
local slot = 1
local inv = 0
local tArgs = { ... }
if # tArgs ~= 2 then
    print("Usage: patch <width> <height>")
    return
end
 
width = tonumber(tArgs[1])
height = tonumber(tArgs[1])
 
local maxBlocks = width * height
 
for i = 1,16 do
    inv = inv + turtle.getItemCount(i)
end
 
if maxBlocks > inv then
    print("Running this script may require more blocks than are available. Are you sure you want to continue? (Y/N)")
end
 
while true do
    local event, char = os.pullEvent("char")
    if char == "y" then
        break
    elseif char == "n" then
        return
    else
        sleep(0.2)
    end
end
 
local function slotCheck()
    while turtle.getItemCount(slot) == 0 do
        slot = slot + 1
    end
    turtle.select(slot)
end
 
for i = 1,width do
    for j = 1,height do
        slotCheck()
        if not turtle.place() and not turtle.detect() then
            turtle.attack()
        end
        if j ~= height then
            if dir then
                if not try.up() then
                    print("Cannot move up! Exiting script...")
                    return
                end
            elseif not try.down() then 
                print("Cannot move down! Exiting script...")
                return
            end
        end
    end
    if i ~= width then
        turtle.turnRight()
        if not try.forward() then
            print("Cannot move forward! Exiting script...")
            return
        end
        turtle.turnLeft()
    end
end