Save and recover entity (advanced)

[runs]

I have an entity (an unique npc entity, not a template). I want to save it during a game and recover when a new game starts.

I prefer not to iterate over all the entities to search for.

I try to save the entity name in mod_storage. And then recover the entity when a new game starts.

I tried with 'minetest.luaentities[objectID]' according the wiki

But I get no result. What is that objectID? The name? What?

My code:

To create the entity (it works OK):

Code: Select all

local objectref = minetest.add_entity(pos, "name")		
local entity = objectref:get_luaentity()		
mod_storage:set_string("ent_name", entity.name)		

To recover the entity (fails):

Code: Select all

local ent_name = mod_storage:get_string("ent_name")	
local entity = minetest.luaentities[ent_name]

Thanks in advance.

[Krock]

You don't need to store it manually like this. There are entity callbacks to do that. example code

`on_activate`: Called when the object is loaded in the map -> use the supplied staticdata to save your stuff
`get_staticdata`: Called when the object is saved to the disk (also when it's getting unloaded)

The luaentities table is not thought for mod use since it's required by the engine to have the object data ready when it's required to send it.

[rubenwardy]

This chapter explains some things about how entities work: https://rubenwardy.com/minetest_modding ... jects.html

[runs]

Thanks on_activate was what I wanted!

PD: 'after_activate' is the related custom function for Mobs Redo.