Jon Rapp

Software Engineer @ AWS, Ex-Dropbox, Ex-Hytale

[WARDOGS @WARDOGS]

WARDOGS 1-Month GIVEAWAY.

To show our appreciation for your support, we’re giving away a custom NVIDIA RTX 5090.

To enter, complete the following:
▫️ Sign up for Playtesting
▫️ Wishlist WARDOGS on Steam
▫️ Repost this giveaway video on X

Sign up here:
https://t.co/E8GVhISGz1

[Jon Rapp @j_rapp_]

@I_Am_Jakoby @grok Makes sense! Rough few weeks for GitHub 😂

[Jon Rapp @j_rapp_]

Use AI to build Hytale mods! Im excited to publish a MCP Server that will allow any AI tool to reference the amazing documentation over at @HytaleModding.

Let AI answer your questions and build Hytale mods. Start using it over at: https://t.co/EcNCeQqFew

[oskarscot 🏝️ @oskarscot]

Pretty big memory leak inside of #Hytale 🚨

Inside of PluginBase there is a list called shutdownTasks, this is used by all plugins, including the core plugins like the NPCPlugin. The NPCPlugin registeres EventViews for each world but doesn't remove them when a world is unloaded. The event handlers hold references to the EventView which holds the World, preventing the world from being garbage collected when unloaded resulting in RAM growing until an OOM happens. This mainly affects servers which rely on heavy world usage like minigames or skyblock servers.

I have linked a fix using mixins in the replies.

@slikey @Simon_Hypixel

[Jon Rapp @j_rapp_]

@Simon_Hypixel is there any future where Hytale's server code would be open-sourced so that forks and modifications could be made alongside the work that the Hytale team is doing?

Id love to dive into fixing stability issues but it's hard when relying on decompiled server code

[owen @ThinkSludge]

#Hytale 11th February 2026, 10AM EST. ZHorde is opening its doors, and zombies are waiting to be slain.

Here's what to expect on launch:
1. ZHorde's unique minigame, 30 waves of intensity, slaying and many many deaths around three different maps!
2. ZHorde's unique perk system. You can unlock perks by obtaining coins via playing and surviving
3. 10 Different classes to level up and unlock. Your first class, you will die. It's called Dead Meat for a reason... 4. Achievements to unlock which gives you more XP to level up!
5. Quests (dailies and weeklies) to help you gain more XP!
6. A new map coming after release 👀 Thank you all for sticking with us and believing in us, we hope you enjoy ZHorde as much as we've enjoyed creating it!

[Jon Rapp @j_rapp_]

@Prowl8413 I can definitely help on the UI front, check out my profile and shoot me a DM!

[Jon Rapp @j_rapp_]

Appreciate all of the community support on this project! To align better with the functionality offered, I've renamed the project to "Hytale ReactiveUI", further updates will be made at https://t.co/jCTyXoMMmF 😄

[Jon Rapp @j_rapp_]

Introducing HyUI: a simple, object-oriented, event-driven way to manage complex & dynamic user interfaces in Hytale.

Try it out now! https://t.co/A3yYbhULP1

#Hytale #HytaleModding #HytaleUI #Hytalebuild

[Jon Rapp @j_rapp_]

@AdaelynXIV Ahh damn should have checked over there. Will figure something out thanks for the heads up!

[Jon Rapp @j_rapp_]

@HytaleModding @pxl_panda Just launched HyUI today, a library to manage Hytale interfaces a lot easier. It uses a component-based event-driven system similar to what we see with modern web tech. Posted some demos and a link to use it on my profile!

[Jon Rapp @j_rapp_]

@oskarscot I focused on Pages for this initial release, but I’ll have an update out this week, maybe tomorrow, to support HUDs!

[Jon Rapp @j_rapp_]

@oskarscot Can relate 😂

[Jon Rapp @j_rapp_]

@ThinkSludge Appreciate it man!

[Jon Rapp @j_rapp_]

@ThinkSludge Appreciate it! I’ll put together something this weekend and hit you up about it

[Jon Rapp @j_rapp_]

@ThinkSludge Check out my profile! Did a deep dive into the UI and made some improvements for easier management of UI elements and eventing. Thinking it may be worth open sourcing what I’ve created to simplify UI and make it more streamlined for everyone, not sure if the need is there though

[Jon Rapp @j_rapp_]

@Buuz135mods Checkout my profile, been posting how I’ve revamped the Hytale UI system to provide a more seamless, event-driven framework for UI

[Jon Rapp @j_rapp_]

@Simon_Hypixel @Buuz135mods You should check out the one I built! Been documenting it on my profile. Rebuilt the UI system to handle things a lot easier. Excited to see how you plan to improve things though!