world
    New()
        if(fexists("MAP.dat"))
            load_worldvars()
            if(load_world)
                loadmap()
            else
                createmap()
                for(var/turf/Trees/T in world)
                    T.AutoJoin()
        else
            createmap()
            for(var/turf/Trees/T in world)
                T.AutoJoin()
        haspopd = 1
        ..()
    Del()
        if(save_map)
            savemap()
            load_world = 1
            save_worldvars()
        ..()
proc
    savemap()
        var/dmp_writer/D = new()
        var/turf/south_west_deep = locate(1,1,2)
        var/turf/north_east_shallow = locate(100,100,2)
        D.save_map(south_west_deep, north_east_shallow, "MAP", flags = DMP_IGNORE_PLAYERS)
    loadmap()
        var/dmp_reader/new_reader = new()
        //need to set new_reader Z to 2, not 3...
        new_reader.load_map("MAP.dat")
    save_worldvars()
        if(!fexists("globals.sav")) //check if the file exists first
            return 0 //if it doesn't, stop
        var/savefile/F = new("globals.sav")
        F << load_world
        F << speed
    load_worldvars()
        if(!fexists("globals.sav")) //check if the file exists first
            return 0 //if it doesn't, stop
        var/savefile/F = new("globals.sav")
        F >> load_world
        F >> speed