[Done] Detect other mods installed

[TheSAguy]

What is the best/correct way to detect if another mod is also being used?
For both Control.lua and Data.lua please.

Thanks.

[darkfrei]

I think it's possible only with reading some items/ entities, if it exists then installed.

[Exasperation]

It's actually pretty easy. From http://lua-api.factorio.com/latest/Data-Lifecycle.html:

a global table mods exists that contains a mapping of mod name to mod version for all enabled mods

The global table mods still exists

So, in the data stage,

Code: Select all

if mods[modname] then

will tell you if a mod named modname exists.

In the control stage, you have access to http://lua-api.factorio.com/latest/LuaG ... ctive_mods instead, so

Code: Select all

if game.active_mods[modname] then

will do it.

[TheSAguy]

It's actually pretty easy. From http://lua-api.factorio.com/latest/Data-Lifecycle.html:

a global table mods exists that contains a mapping of mod name to mod version for all enabled mods

The global table mods still exists

So, in the data stage,

Code: Select all

if mods[modname] then

will tell you if a mod named modname exists.

In the control stage, you have access to http://lua-api.factorio.com/latest/LuaG ... ctive_mods instead, so

Code: Select all

if game.active_mods[modname] then

will do it.

The control stage does not seem to work for me.
I tried the following two:

Code: Select all

	
	if game.active_mods[EndgameCombat] then
		game.surfaces[1].print("You have Endgame Combat Installed, not compatable with Natural Evolution Buildings")
	end

and

Code: Select all

	for name, version in pairs(game.active_mods) do
		game.surfaces[1].print(name .. " version " .. version)
	end

I tried them in "script.on_init", "script.on_configuration_changed" and "script.on_load". Crashes in On_load and does not seem the have any effect in the other two.
Anyone see what I'm doing wrong here?
Control attached.
Thanks.

[darkfrei]

Code: Select all

	if game.active_mods[EndgameCombat] then
		game.surfaces[1].print("You have Endgame Combat Installed, not compatable with Natural Evolution Buildings")
	end

EndgameCombat is link, "EndgameCombat" is word

Code: Select all

	if game.active_mods["EndgameCombat"] then
		game.surfaces[1].print("You have Endgame Combat Installed, not compatable with Natural Evolution Buildings")
	end

[Bilka]

And it won't print anyways in on_init if you are creating a new world.

[TheSAguy]

I'm not sure what's going on here, I'm can't seem to even display a message without any condition.

The below by itself is not displaying me anything...

Code: Select all

	game.surfaces[1].print("You have Endgame Combat Installed, not compatible with Natural Evolution Buildings")

[Bilka]

I'm not sure what's going on here, I'm can't seem to even display a message without any condition.

The below by itself is not displaying me anything...

Code: Select all

	game.surfaces[1].print("You have Endgame Combat Installed, not compatible with Natural Evolution Buildings")

Are you creating a new world with the mod? Then print won't work in on_init because it happens before players are created. Source: Nexela

[TheSAguy]

I placed my code in both On-Init and on-Change, but I'm not getting any message displayed.

[darkfrei]

I'm not sure what's going on here, I'm can't seem to even display a message without any condition.

The below by itself is not displaying me anything...

Code: Select all

	game.surfaces[1].print("You have Endgame Combat Installed, not compatible with Natural Evolution Buildings")

Players, not surfaces:

Code: Select all

/c game.players[1].print("You have Endgame Combat Installed, not compatible with Natural Evolution Buildings")

[TheSAguy]

UGH, I knew it was user error, I just could not find it!
Thanks.

[TheRedBull]

I'd been trying to figure this out for the last couple days... thanks for this thread!

[TheSAguy]

How can I determine if a mod is installed during control.lua, but not during "script.on_configuration_changed" or "script.on_init".

There I can use:

Code: Select all

game.active_mods["mod name"] then

I need to determined if Alien Biomes is running, and if running it should use a different table. I cant use "game" though during normal control as in below

Code: Select all

if game.active_mods["alien-biomes"] then
	terrains = require("libs/trees-and-terrains_alien_boimes")
else
	terrains = require("libs/trees-and-terrains")
end

Thanks.

[orzelek]

I've been using the active-mods method in control.lua without problems.
I don't think it's limited to those events - I have a use from remote interface and it seems to work.

You are trying to make conditional require statements in that if - maybe thats whats not working properly?

[lukavminaev]

In the control stage, you have access to http://lua-api.factorio.com/latest/LuaG ... ctive_mods instead, so

Code: Select all

if game.active_mods[modname] then

will do it.

Its late but the correct code is

Code: Select all

if type(game.active_mods["modname"]) then

[Rseding91]

Its late but the correct code is

Code: Select all

if type(game.active_mods["modname"]) then

That's just extra work to get the same results. You don't need the type check.