Save variables of the world

ID:973014
 
Sep 10 2012, 9:17 am
Keywords: load, save, state, world
(See the best response by NNAAAAHH.)
How do I save stuff that happens in the world, like a treasure box being already opened, or an obstacle removed, after I close the world and re-open it?
Sep 10 2012, 9:54 am
Best response
Oct 13 2012, 11:49 am
Oh my gosh, sorry, I haven't been able to work on my game in such a long time cause I've been swamped with school.

So I just started to work on this today, and I'm really confused on how this works, this is what I have so far, and it doesn't even work.
world
    proc
        Save_Game(FileNumber)
            var/savefile/S = new ("SaveFile/File[FileNumber]")
            S["world"] << world
    New()
        ..()
        var/savefile/S = new ("SaveFile/File1")
        S["world"] >> world


I get an error that says, 
error: world: cannot change constant value

I'll be available all day, so if anyone can help, any is welcome!
Oct 13 2012, 11:52 am
You will need to save particular objects within the world, and load them. The entire world cannot be saved/loaded like that. So you'd save the particular treasure boxes you were interested in.
Oct 14 2012, 4:57 am
Oh okay I see, even if my way did work, it would probably cause crazy lag and be memory expensive, lol.

Right, so I should go about making particular objects savable so that it loads itself how it was right? How should I go about differentiating them since some of them are going to be the same obj type?

I could use like ++ to their file names or something, but what if I add more maps with that same obj type? Will it throw the save files outa whack? Is this way of going about that even effective?
Oct 14 2012, 8:53 am
If you want to keep track of which treasure boxes were opened, you need a separate value to read for each one. You could save this as a list, as long as you read and write the list in the same order every time (which I don't think is reliable when you use for(treasure_box in world)). Or you could have separate buffers for each one. They could be named using their coordinates in an embedded statement:

S["treasurebox[box.x][box.y][box.z]"]

I'm not that great with savefiles though so maybe someone has a better idea :)
Oct 15 2012, 3:33 pm
Wow, omigosh thats an awesome idea! I'll try that out and see how it goes!