[1.15.2] Access another mod's Block without having to import it

[squidlex]

Hi there!

I'm messing around with Data Generators and I want one of my recipes to use a block from another mod.

I already have a check to make sure the mod is installed, but I don't know how to actually get the mod's item. I know I can change it in the JSONs but I want to do it directly from my code.

 

I'm using ShapedReciperBuilder.key() which requires an implementation of IItemProvider.

 

I read about a 'getBlockById' method somewhere but this has either been renamed or removed in later versions.

Any help with this would be greatly appreciated!

Edited May 15, 2020 by squidlex

[Draco18s]

@ObjectHolder annotations.

If the mod is loaded and the block exists, the annotated field will be populated with a value.

[squidlex]

4 minutes ago, Draco18s said:

@ObjectHolder annotations.

Thanks for your reply

My issue is that I don't have the Mod present in my working directory, would that still work?

If not do you know of any way to just get my Data Generator to set the key to a given ID?

 

Sorry if that's a dumb question.

[Draco18s]

If the mod is not present, the value will be left null. Be sure to perform a null-check before doing anything with the value.

 

And of course, if the other mod is present it won't function (but it won't crash).

 

[DavidM]

6 hours ago, squidlex said:

Thanks for your reply

My issue is that I don't have the Mod present in my working directory, would that still work?

If not do you know of any way to just get my Data Generator to set the key to a given ID?

 

Sorry if that's a dumb question.

Values are injected into fields marked with @ObjectHolder regardless if a mod is present.

It is capable of obtaining any registry entry.

Think of it as an “event handler” for registering a registry entry. If at any point in time (not literally; please only register stuff during the appropriate event) an object is registered, Forge looks through all object holder and injects the value into according ones.

If an entry is never registered (i.e. the mod is not installed), then the “event” of registering that specific entry will not occur, and therefore will leave the field to null.