Save Module for Love2D (with merging)

main.lua

-- Love2D initialization
--
function love.load()
	loadGame('my-game')
end

---- ---- ---- ----

-- New Game
--
function newGame(name)
	SAVE = Saver:save(name, {
		-- initial game data
		-- ...
	})
end

-- Load Game
--
function loadGame(name)
	if Saver:exists(name) then
		SAVE = Saver:load(name)
	else
		newGame(name)
	end
end

-- Save Game
--
function saveGame(name, data)
	SAVE = Saver:save(name, merge(SAVE, data))
end

-- merge two nested tables, in place
function merge(t1, t2)
	for k, v in pairs(t2) do
		if type(v) == 'table' then
			t1[k] = merge(t1[k], t2[k])
		else
			t1[k] = v
		end
	end

	return t1
end

saver.lua

-- Binser is a lua serializer: https://github.com/bakpakin/binser
local Binser = 'vendor.binser.binser'
local Saver  = {}

-- Write to save file
--
function Saver:save(name, data)
    love.filesystem.write(name .. '.txt', Binser.serialize(data))

    return data
end

-- Load save file
--
function Saver:load(name)
    if self:exists(name) then
        local data, size = love.filesystem.read(name .. '.txt')

        return Binser.deserialize(data)[1]
    end

    return false
end

-- File exists?
--
function Saver:exists(name)
    return self:getInfo(name) ~= nil
end

-- Get file info
--
function Saver:getInfo(name)
    return love.filesystem.getInfo(name .. '.txt', 'file')
end

return Saver