Event: on_pre_save - to interact before a save state is finalized

[Theis]

TL;DR

Give mods the option to manipulate LUA::global before a Save
The opposite of on_load.

What ?

Fire an event either on:

1. on_save
2. on_pre_save

Where mods gets a chance to prepare the save state in some way.
With the potential event-data:

• player_index::uint? - if saved for one player, the index of that player
• name::defines.events -Identifier of the event
• tick::uint - Tick the event was generated.
• is_server_save::boolean
• is_auto_save::boolean
• save_name::string - The name of the new save or the name of currently-running save, where the game is saved to.

Why ?

This has at least 2 uses: It allows mods to prepare the game for a save; It allows mods to prepare themselves for save-state.

Preparing the game for a save could be interesting for modders, if they for instance wanted to punish people that saved frequently by making the biters more aggressive.

Preparing the mod for the save-state, means that mods can use LUA::local variables throughout and only store/load LUA::global when an event is fired. Since then both on_save & on_load would be covered.

[boskid]

No. 104337