filesystem.newFile????

[Robin]

To save tables, simply use Ser.

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local serialize = require 'ser'

--saving code
love.filesystem.write('nameofsavegame', serialize(sometable))

--loading code
sometable = love.filesystem.load('nameofsavegame')()

[pielago]

ohh so what i did will only work for small stuff? or single parts of a table???
if so..
ill try "ser" and see if i can get it to work and save all my tables and load them...
hope it can save tables inside a table...

from what i see "ser" both will go under love.load()
am i correct or not???

[Robin]

I don't think I understand what you're saying, sorry.

You'd require Ser at the top of your main.lua or wherever you'd want to use it. The other two pieces of code you would place in the places you'd load or write a savegame. 'nameofsavegame' and sometable are just examples, you would use something different. (For example, let the user type the name of the game to save or load, or let them select it from a list.)

If the things you want to save are stored in multiple tables, you can do it like this:

Code: Select all

--saving code
love.filesystem.write('nameofsavegame', serialize({player, map, enemies})

--loading code
player, map, enemies = unpack(love.filesystem.load('nameofsavegame')())

[pielago]

well i did as you told me but i dont know why it wont save it ... can you help me??

[Robin]

Ah, yes. I'm sorry, Ser currently doesn't do metatables, nor does any other serialisation library I know of.

You could do this:

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	--load filesystem
	if love.filesystem.exists("player") then
		p = setmetatable(love.filesystem.load('player')(), getmetatable(p))
	end

This replaces your "p" player object, but keeps the metatable.

Important: don't write out your game every frame. Better save on a keypress, for example:

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function love.keypressed(key)
	if key == 's' then
		--write data
		love.filesystem.write('player', serialize(p))
	end
end

Again, "p" instead of "player" (player == nil anyway).

Lastly, either place the line local serialize = require("ser") outside of love.load, or remove the word local. Otherwise love.keypressed can't use the serialisation function.

[pielago]

it worked thank you so now to add more tables will it be like this????

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    function love.keypressed(key)
       if key == 's' then
          --write data
          love.filesystem.write('player', serialize(p,m,s,t))--many metatables
       end
    end

[Robin]

It would be a good idea for a new feature, somewhere in the future, but currently you'll have to pack them first:

Code: Select all

--writing
love.filesystem.write('player', serialize({p,m,s,t}))--note the curly braces 

The loading code is a bit more tricky, mostly because of metatables, I'm sad to say:

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--loading
p, m, s, t = unpack(love.filesystem.load('player')())
setmetatable(p, {__index = Player})
setmetatable(m, {__index = Map})-- I don't know what these are
setmetatable(s, {__index = Something}) -- it might be good to use more descriptive variable names
setmetatable(t, {__index = Tsomething}) -- so that other people or future you can understand what they're for

[pielago]

i see the write its the same

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love.filesystem.write('player', serialize({p,m,s,t}))--note the curly braces

but for the load I can tell its more to add
I can add my maps well that will do it, thank you so much

as long as I save my players variables will do it (hope)

Code: Select all

    --loading
    p, m, s, t = unpack(love.filesystem.load('player')())
    setmetatable(p, {__index = Player})
    setmetatable(m, {__index = Map})-- I don't know what these are
    setmetatable(s, {__index = Something}) -- it might be good to use more descriptive variable names
    setmetatable(t, {__index = Tsomething}) -- so that other people or future you can understand what they're for