Effects, random numbers, and desyncs

[danielbrauer]

Are effects rendered using rendering.draw_animation() and rendering.draw_light() expected to be synchronised?

If not, how do I synchronise the state of a random number generator? As far as I can see, Lua's math.random() only lets you seed it, but there's no facility for synchronising state.

[orzelek]

Take a look here:
https://lua-api.factorio.com/latest/Lua ... rator.html

Also if I recall correctly you don't need to sync math.random(). It is modified for game use and uses map random generator.

[Bilka]

Render objects are part of the game state, just like entities. If they weren't, they'd be disappearing on save load

Math random is deterministic and math randomseed it does nothing.

[danielbrauer]

Ok that makes sense, and makes things really easy. Thanks!