Modifying vanilla blocks

[MemoryPatrick]

Hey, so i'm trying to make a mod which modifies the vanilla Vine block to not be affected by game ticks which thereby leads to not growing Horizontally or Vertically.

I'm using Forge 41.0.63 (Since most mods I use are broken after 41.0.64)

If anybody knows a way to modify the BlockProperties of a Vine and if possible NOT adding a new Block I would appreciate any answer!

[MemoryPatrick]

4 minutes ago, diesieben07 said:

Set BlockBehaviour#isRandomlyTicking to false for the vine block in FMLCommonSetupEvent#enqueueWork using reflection.

I'm kinda new.
Can you say what i have to do more specifically?

[warjort]

I don't know how he can be more specific without writing your mod for you. 🙂

 

Anyway, you can't use reflection because the field is final.

Instead you would need to use an access transformer to make the isRandomlyTicking field in the BlockBehaviour class non-final and public:

https://forge.gemwire.uk/wiki/Access_Transformers

 

Mod lifecycle events like FMLCommonSetupEvent are explained in the docs here:

https://docs.minecraftforge.net/en/latest/concepts/lifecycle/

or you can see an example in the mdk.

 

Something like (untested code):

        event.enqueueWork(() -> {
            Block vineBlock = ForgeRegistries.BLOCKS.getValue(new ResourceLocation("minecraft:vine"));
            vineBlock.isRandomlyTicking = false;
        });

 

[MemoryPatrick]

2 minutes ago, warjort said:

I don't know how he can be more specific without writing your mod for you. 🙂

 

Anyway, you can't use reflection because the field is final.

Instead you would need to use an access transformer to make the isRandomlyTicking field in the BlockBehaviour class non-final and public:

https://forge.gemwire.uk/wiki/Access_Transformers

 

Mod lifecycle events like FMLCommonSetupEvent are explained in the docs here:

https://docs.minecraftforge.net/en/latest/concepts/lifecycle/

or you can see an example in the mdk.

 

Something like (untested code):

        event.enqueueWork(() -> {
            Block vineBlock = ForgeRegistries.BLOCKS.getValue(new ResourceLocation("minecraft:vine"));
            vineBlock.isRandomlyTicking = false;
        });

 

Yea you are right ^^

okay i'll take a look into it. Thanks to both of you!

[warjort]

1 hour ago, diesieben07 said:

Actually you can modify final fields using reflection. Only static final fields won't work.

Never knew that. The static final not working is probably more due to compiler "inlining" the value?