Fix: Confetti Creeper Firework Crash In Minecraft 1.21.10

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Confetti Creepers Firework Crashes 1.21.10 Servers

Hey guys! It looks like some of you are experiencing crashes when Confetti Creepers explode with fireworks in Minecraft 1.21.10. Let's dive into this issue, figure out what's going on, and hopefully find a solution. This article breaks down the problem, what causes it, and potential workarounds.

The Problem: Server Freezing with Confetti Creeper Explosions

Expected Behavior

Ideally, when a Confetti Creeper explodes, it should go boom with a cool firework effect, just like the developers intended. Think colorful explosions and no hiccups on the server-side – smooth and visually awesome!

Observed/Actual Behavior

But, in reality, what's happening is a major buzzkill: the server gets completely stuck trying to process the firework rocket. Imagine the creeper exploding, and then… nothing but a frozen server. This is a serious issue because it can disrupt gameplay and frustrate players. When a server freezes, it's like hitting a brick wall – no one can move, build, or do anything until it's resolved.

The technical details are even more specific. Digging into the thread dumps, it’s always the same culprit: the server freezes on the task net.minecraft.world.entity.projectile.FireworkRocketEntity.tick(FireworkRocketEntity.java:176). This means the issue lies within the game's code that handles the firework rocket's behavior every tick (a small unit of time in Minecraft). Basically, the server gets stuck in a loop trying to figure out what to do with the firework, causing the entire system to grind to a halt. This kind of server freeze is a critical issue, often requiring a server restart, which can be a pain for everyone involved.

Steps to Reproduce

Want to see if you can replicate the problem? Here’s how:

  1. Find a Confetti Creeper. Remember, it needs to be the Confetti Creeper variant, not your everyday, run-of-the-mill creeper. Confetti Creepers are special because they’re supposed to explode with a firework effect.
  2. Make it explode! Trigger the creeper's explosion, and cross your fingers that your server doesn't freeze. If it does, you've successfully reproduced the bug.

This consistent reproduction method is super helpful for developers trying to fix the issue. Knowing the exact steps to trigger the bug makes it way easier to pinpoint the problem in the code.

Server Environment Details

To really nail down what's causing this, we need to look under the hood at the server setup. Here’s the crucial info:

Plugin and Datapack List

  • VanillaTweaks: This is the only datapack being used. Datapacks can add or change game mechanics, so it's important to note this. VanillaTweaks is a popular choice, offering a bunch of cool tweaks without changing the core gameplay too much.

Server Version Info

The server is running a specific version of Purpur: 1.21.10-2522-HEAD@56ac4de. Purpur is a fork of Paper, which itself is a more performance-focused version of Spigot (a modified Minecraft server). This detailed version number helps developers track down the exact code being used, which is crucial for bug fixing. The 1.21.10 part tells us the Minecraft version, and the rest gives specifics about the Purpur build.

Plugin Version

The server is also running PaperTweaks version 0.5.0. Knowing the exact version of any plugins is essential because plugins can sometimes cause conflicts or bugs. PaperTweaks likely adds some extra functionality or tweaks to the server's behavior, so it's good to keep it in mind.

What's Going On?

Okay, so we've got a pretty clear picture of the problem: Confetti Creepers exploding with fireworks are causing servers to freeze, specifically in the FireworkRocketEntity.tick method. The server is running Purpur 1.21.10 with VanillaTweaks datapack and PaperTweaks plugin. This points to a potential issue with how the server software (Purpur) or one of the modifications (VanillaTweaks or PaperTweaks) handles the firework entity.

Why This Happens: Diving Deeper into the Issue

To really understand why this is happening, let's break down the potential causes:

  1. Purpur Server Bug: Purpur, being a modified version of the Minecraft server, might have a bug in its firework handling code. Sometimes optimizations or changes in server software can introduce unexpected issues. The FireworkRocketEntity.tick method is a core part of how fireworks work in the game, so any problem there can cause widespread issues.
  2. VanillaTweaks Interaction: The VanillaTweaks datapack could be interacting with the Confetti Creeper or firework mechanics in a way that causes the freeze. Datapacks can modify mob behavior and game events, so a conflict here is possible. Maybe VanillaTweaks is altering the creeper's explosion in a way that overloads the server when the firework is triggered.
  3. PaperTweaks Plugin Conflict: Similarly, the PaperTweaks plugin might be the culprit. Plugins can add all sorts of features, and sometimes they can interfere with the base game or other modifications. It’s possible that PaperTweaks has a feature that conflicts with how fireworks are processed, leading to the server freeze.
  4. Resource Intensive Fireworks: It’s also possible that the confetti effect itself is just too resource-intensive. Imagine tons of particles and calculations happening all at once – this could overload the server, especially if it's already under heavy load.

Potential Solutions and Workarounds

Alright, so we know what's going wrong and some potential causes. What can we do about it? Here are some steps you can take:

  1. Disable VanillaTweaks: The easiest way to check if VanillaTweaks is the problem is to temporarily disable it. Remove the datapack from your server and see if the issue goes away. If it does, then you know VanillaTweaks is involved.
  2. Disable PaperTweaks: Similar to VanillaTweaks, try removing the PaperTweaks plugin. Stop your server, remove the plugin from the plugins folder, and restart. If the crashes stop, then PaperTweaks is likely the cause.
  3. Check Purpur Configuration: Purpur has a lot of configuration options that can affect performance. Dig through your purpur.yml file and see if there are any settings related to entity processing or fireworks that you can tweak. Sometimes lowering certain limits or disabling specific features can help.
  4. Update Purpur: Make sure you’re running the latest version of Purpur. Server software updates often include bug fixes, so updating could solve the problem. Check the Purpur website or their Discord server for the latest releases.
  5. Monitor Server Performance: Use a server monitoring tool to keep an eye on your CPU, RAM, and TPS (ticks per second). If you notice spikes in resource usage when the Confetti Creeper explodes, it could indicate that the fireworks are overloading the server. This information can help you narrow down the issue and potentially adjust server settings to handle the load.
  6. Report the Bug: If you’ve narrowed down the issue to Purpur, VanillaTweaks, or PaperTweaks, report the bug to the respective developers. Provide as much detail as possible, including your server version, plugin versions, steps to reproduce the bug, and any error messages or logs. The more information you give, the easier it will be for them to fix the problem.

Step-by-Step Troubleshooting

Let's outline a systematic way to troubleshoot this issue. Here's a step-by-step guide:

  1. Backup Your Server: Before making any changes, always back up your server. This is crucial in case something goes wrong, and you need to revert to a previous state.
  2. Isolate the Problem:
    • Disable VanillaTweaks: Remove the datapack and restart the server. Try triggering the Confetti Creeper explosion again.
      • If the crashes stop, VanillaTweaks is likely the cause. You can then try updating VanillaTweaks or looking for specific settings that might be causing the issue.
      • If the crashes continue, move on to the next step.
    • Disable PaperTweaks: Remove the plugin and restart the server. Trigger the creeper explosion.
      • If the crashes stop, PaperTweaks is the culprit. Similar to VanillaTweaks, try updating the plugin or checking its configuration.
      • If the crashes still occur, proceed to the next step.
  3. Check Purpur Configuration:
    • Review your purpur.yml file for any settings related to entity processing, fireworks, or performance. Look for options that might be limiting the server's ability to handle the fireworks.
    • Try adjusting settings like max-entity-collisions or any firework-specific options.
  4. Update Purpur:
    • Check for the latest version of Purpur and update your server if necessary. Bug fixes in newer versions might address the issue.
  5. Monitor Server Performance:
    • Use tools like /tps in-game or a dedicated monitoring plugin to track your server's performance. Watch for any spikes in CPU or RAM usage when Confetti Creepers explode.
    • High resource usage can indicate that the server is being overloaded by the firework effects.
  6. Analyze Crash Reports/Logs:
    • Check your server's crash reports and logs for any error messages or stack traces related to the FireworkRocketEntity. These logs can provide valuable clues about what's going wrong.
    • Look for any recurring errors or patterns that might point to a specific cause.
  7. Report the Bug:
    • If you've identified a potential cause (e.g., a bug in Purpur or a conflict with a specific mod/plugin), report it to the relevant developers. Provide detailed information about your setup, the steps to reproduce the issue, and any error messages or logs.

Final Thoughts

Dealing with server crashes is never fun, but by systematically troubleshooting the issue, you can often find a solution. In the case of Confetti Creepers causing firework-related crashes in Minecraft 1.21.10, the key is to isolate the potential causes – whether it's a server bug, a mod/plugin conflict, or resource overload. Remember to take backups, disable modifications one by one, check configurations, and monitor performance. And don't hesitate to reach out to the community or the developers for help.

Happy Minecrafting, and may your servers be crash-free!