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[1.16.1] Batching block state change

Posted September 18, 20205 yr

In my mod I am changing the state of a large number of blocks every so often. I have noticed that with the greater number of blocks that I change the state, the laggier it gets. I'm currently calling world.setBlockState for every block I want to change. Is there a way I can batch block state updates to the world?

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September 23, 20205 yr

You could try looking at how the vanilla /fill command does it. I'm not sure how optimised it is.

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September 23, 20205 yr

39 minutes ago, Alpvax said:

I'm not sure how optimised it is.

Its not.

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable. If you think this is the case, JUST REPORT ME. Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

DO NOT PM ME WITH PROBLEMS. No help will be given.

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Forge 1.20.x Tutorial by Myroslav Mokhammad Abdeljawwad: Clean Capability Syncing (Server ↔ Client)

Hello everyone,

This tutorial is a short write-up based on patterns I’ve been using while developing Forge 1.20.x mods that rely on custom capabilities and reliable server ↔ client synchronization.

Author: Myroslav Mokhammad Abdeljawwad

Overview

Capabilities are one of the most powerful systems in Forge, but syncing them incorrectly can easily lead to desyncs, performance issues, or unexpected client behavior. This guide focuses on a clean, minimal approach that scales well.

### Step 1: Defining the Capability

Define your capability interface and implementation as usual. Keep the data minimal and serializable.

Key tip:
Avoid putting logic in the capability itself. Treat it as a data container.

### Step 2: Attaching the Capability

Attach the capability during the appropriate lifecycle event (e.g. AttachCapabilitiesEvent). Make sure this is done consistently on both logical sides.

Step 3: Sync Strategy

Instead of syncing on every tick, sync only when:
- The data changes
- The player logs in
- The chunk or entity loads

Using a SimpleChannel packet with explicit encode/decode logic gives you the most control and avoids unnecessary traffic.

Step 4: Client Handling

On the client side:
- Never trust local state blindly
- Apply updates only after packet validation
- Keep rendering logic separate from data updates

Final Notes

This pattern has worked well for larger mods where performance and stability matter. If you’re building long-term Forge projects, keeping syncing explicit and event-driven will save a lot of debugging time.

I’ll update this tutorial if Forge introduces changes to capability handling in future versions.

Thanks for reading, and I hope this helps other modders.

By Myroslav Mokhammad Abdelja · Posted 39 minutes ago39 min
recipes json change from 1.21.1 dont work on newer version

You might want to check how you’re registering the capability provider — this often causes the issue you’re describing.
I ran into something similar recently while working on a Forge 1.20.x mod. Making sure registration happens at the correct lifecycle event fixed it for me.
— Myroslav Mokhammad Abdeljawwad

By Myroslav Mokhammad Abdelja · 41 minutes ago41 min
New modder introduction + first Forge 1.20.x project

Hi everyone,
My name is Myroslav Mokhammad Abdeljawwad and I’m new to posting here, though I’ve been working with Forge for a while.
I’m currently experimenting with a Forge 1.20.x mod focused on custom events and server-side logic. I’m comfortable with Java, Gradle, and debugging mixin-related issues, but I’m still learning best practices around capabilities and data syncing.
I’m hoping to both learn and contribute here as I continue developing mods and tools around the Forge ecosystem.
Looking forward to being part of the community.

By Myroslav Mokhammad Abdelja · Posted 43 minutes ago43 min
Orbital strike cannon fishing rod mod

RIP. 2025-2025. Last seen. 4 weeks ago prob idk.

By Stonecold123 · 12 hours ago12 hr
I need some help with org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError im using terrafirmacraft

Please read the FAQ (https://forums.minecraftforge.net/topic/125488-rules-and-frequently-asked-questions-faq/) and post logs as described there to an external site (https://mclo.gs is popular) and post the link here.

By Ugdhar · 16 hours ago16 hr

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[1.16.1] Batching block state change

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Forge 1.20.x Tutorial by Myroslav Mokhammad Abdeljawwad: Clean Capability Syncing (Server ↔ Client)

recipes json change from 1.21.1 dont work on newer version

New modder introduction + first Forge 1.20.x project

Orbital strike cannon fishing rod mod

I need some help with org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError im using terrafirmacraft

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