persistent storage for various objects

[mnn]

I'm looking for a way how to save nbt data to the dimension/player/all worlds?

 

So far I found out that entity has getEntityData, but it cannot be used to save data for a player (after death it disappears).

 

I saw that in changlog it is mentioned (per-dimension), but is there any documentation for forge (not javadoc, I can browse through classes in my IDE, but without knowledge of class/method names it's useless)? Tutorials on forge wiki do not cover much

[mnn]

Thank you for fast answer. My mod isn't a core one, is there any other way of storing save-specific or dimension-specific data?

[shadowmage4513]

My method of storing persistent data for worlds, while not being a coremod, is to sideline a data file into the world-save folder, and to use onWorldSave and onWorldLoad events to trigger loading/saving of the data.  I use basically an NBT tag to store it in, and CompressedStreamTools to write it into a file.  A little code for a timestamp (don't want to re-load old data when a new dimension is loaded/reloaded) ,and clearing cache on logout, and you've got a persistent-data system running alongside MC that will load world-specific data.

 

It is kind of ugly, and relies on that file not being separated from the world directory, but it has worked very well for me so far.  Many other mods to the same (or very similar)--e.g. Greg-tech stores IDSU values in such a file, NEI stores world-inventory-saves into such a file--WRCBE stores world-specific frequency info in much the same manner. 

 

For examples of how these work, ChickenBones does release source for his mods, which should show you how/when to load the data.