diff options
| author | orwell96 <orwell@bleipb.de> | 2018-11-10 22:38:13 +0100 |
|---|---|---|
| committer | orwell96 <orwell@bleipb.de> | 2018-11-10 22:38:13 +0100 |
| commit | 33baf3b05c2a8b7cffdf67528c48ecad0c79ce89 (patch) | |
| tree | 3b1f6704e85b6d7190fb5f5fc15c61be78eb2bcb | |
| parent | d761c54d3d9e6252e2088a78cd95702d14e3bb80 (diff) | |
| download | advtrains-33baf3b05c2a8b7cffdf67528c48ecad0c79ce89.tar.gz advtrains-33baf3b05c2a8b7cffdf67528c48ecad0c79ce89.tar.bz2 advtrains-33baf3b05c2a8b7cffdf67528c48ecad0c79ce89.zip | |
Prevent oversaving of save files from newer versions
| -rw-r--r-- | advtrains/init.lua | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/advtrains/init.lua b/advtrains/init.lua index dee48ac..d8b028a 100644 --- a/advtrains/init.lua +++ b/advtrains/init.lua @@ -170,6 +170,8 @@ dofile(advtrains.modpath.."/log.lua") advtrains.fpath=minetest.get_worldpath().."/advtrains" dofile(advtrains.modpath.."/log.lua") +local saving_disabled + function advtrains.avt_load() local file, err = io.open(advtrains.fpath, "r") if not file then @@ -179,6 +181,15 @@ function advtrains.avt_load() if type(tbl) == "table" then if tbl.version then --congrats, we have the new save format. + if tbl.version > 1 then + -- we are going to downgrade! that's not good! + atwarn("The save file of this world has been saved from a newer version of advtrains.") + atwarn("Opening it in this version could cause significant data loss once it's saved again.") + atwarn("Advtrains data is therefore not saved in this session.") + atwarn("To downgrade permanently, locate the 'version' entry in the save file and set it to 1") + saving_disabled = true + end + advtrains.trains = tbl.trains advtrains.wagon_save = tbl.wagon_save advtrains.player_to_train_mapping = tbl.ptmap or {} @@ -376,6 +387,9 @@ function advtrains.save(remove_players_from_wagons) atwarn("Instructed to save() but load() was never called!") return end + if saving_disabled then + return + end advtrains.avt_save(remove_players_from_wagons) --saving advtrains. includes ndb at advtrains.ndb.save_data() if atlatc then atlatc.save() |