steed/stead/snapshot.lua
2010-06-22 06:13:43 +00:00

47 lines
992 B
Lua

game._snapshots = {}
function make_snapshot(nr)
if not tonumber(nr) then nr = 0 end
local h = { };
h.txt = ''
h.write = function(s, ...)
local i
for i = 1, stead.table.maxn(arg) do
s.txt = s.txt .. tostring(arg[i]);
end
end
local old = game._snapshots; game._snapshots = nil
for_each_object(save_object, h);
save_object('game', game, h);
clearvar(_G);
game._snapshots = old
game._snapshots[nr] = h.txt;
end
function restore_snapshot(nr)
if not tonumber(nr) then nr = 0 end
local ss = game._snapshots
if not ss[nr] then return nil, true end -- nothing todo
stead:init();
game.lifes:zap();
dofile('main.lua');
if type(init) == 'function' then -- no hooks here!!!
init();
end
local f, err = loadstring(ss[nr]);
if not f then return end
local i,r = f();
game._snapshots = ss
if r then
return nil, false
end
i = do_ini(game);
RAW_TEXT = true
return i;
end
function delete_snapshot(nr)
if not tonumber(nr) then nr = 0 end
game._snapshots[nr] = nil
end