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Omni-Mobs

Omni-Mobs

Adds some random and powerful mobs into Minecraft for overpowered mob battles.

63.5k
14
Mobs

Compatibility

Minecraft: Java Edition

1.20.1

Platforms

Forge
NeoForge

Supported environments

Client and server

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Creators

Flashfur
Flashfur Member

Details

Licensed ARR
Published last year
Updated 5 days ago
DescriptionGalleryChangelogVersions
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Omni-Mobs 0.3.4.2

by Flashfur on Nov 9, 2025
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  • Removed the random ICosmicEffect interface from months and months ago.
  • Fixed despawn immunity for Boss entities.

Omni-Mobs 0.3.4.1

by Flashfur on Nov 7, 2025
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  • Fixed a bug where Boss entity defences could be bypassed by forcing the game to load their save data, after changing it.

Omni-Mobs 0.3.4

by Flashfur on Nov 7, 2025
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  • Updated entity getter to force-get entities, bypass entity filtering.
  • Moved damage logic from setHealth() to hurt(), and made setHealth() just call hurt(), meaning some mobs can now dodge/block setHealth().
  • The BossEntity hurt() method now doesn’t call super.hurt(), so it doesn’t use any vanilla behaviour.
  • Updated access checker to make it more resilient against bypasses, even though I hadn’t seen any bypasses for the original one.
  • Updated the name of the mixin-remover-class-visitor.
  • Removed a random print statement that I left in the mixin-remover-method-visitor.
  • Improved handling of coremod when it fails on JVMs that don’t have the Attach/Tools API (com.sun.tools.attach). It now uses reflection to access certain things, instead of a direct reference, so it is catchable and won’t crash the game – instead falling back to events/disabling some features, as intended.
  • Fixed some bugs related to Metapotent Flashfur when the coremod failed, or was disabled, like the Meta-Beam not showing up.
  • Coremod config value moved to omnimobs-common. If you disabled the coremod previously, you might need to disable it again. (Except it might not crash anymore, so that might not be required.)
  • Fixed incorrect logging in the coremod, saying “Transforming ServerLevel…” when it was actually transforming MinecraftServer.
  • The coremod (Java agent) temporary file is now set to delete on exit. (So it won’t clutter the OS’s temporary files directory.)
  • The agent JAR file is now extracted with a try-with-resources statement, meaning if it fails at this step, the file stream will still be closed.
  • Fixed stars and light rays rotating with Metapotent Flashfur.
  • Updated Metapotent Flashfur’s stars to last twice as long on average.
  • Fixed Metapotent Flashfur’s walk animation, making it smooth.
  • Updated Metapotent Flashfur’s Meta-Beam to vaporise entities. (They don’t play their death animation.)
  • Added Object-Oriented ability/move system and ported Silverlight (and Flashfur’s Invulnerability Detection) to it. This allows for cleaner code, and context-aware moves! (I’ll port the other mobs fully, when they get a big rework, and all new mobs will probably use it!)
  • Updated Silverlight a bit, due to the fact I ported him to the new OOP system. He should hopefully feel less “spammy”.
  • Updated UnsafeUtil to make a new instance of Unsafe, instead of getting the existing theUnsafe field. This doesn’t matter much (it’s only used to attach the agent), but I prefer doing it this way. It’ll fall back to the other one just in case.
  • Updated the music system to use an IMusicEntity interface, meaning both Boss entities and Metapotent Flashfur use the same BossMusic class. (In other words, there is less duplicated code, as the BossMusic class only cares about an IMusicEntity, and not a specific implementation!)
  • Changed Flashfur’s and Iron Golem’s music, because of potential issues using the original ones. Original music:
    • Courage by Hot_Dope from Pixabay.
    • Aggressive Metal Trailer (Dragon Heart) by AlexGrohl from Pixabay.
  • Made it so Boss entities can target entities that can’t normally be targeted. (For example, entities with the invulnerable flag set to true.)
  • Added a spark particle effect when Alarm parries an attack with his sword.
  • Made it so the camera shake doesn’t shake when the game is paused.
  • Fixed Metapotent Flashfur not saving on Windows (hopefully), by upgrading file management to use java.nio.file, meaning it’ll automatically handle / vs \. (I use Linux, so I can’t be 100% certain it works!)
  • Made it so Metapotent Flashfur cannot have a damage overlay or death animation.
  • Fixed camera shake becoming intense upon world reloading. (The intensity value persists upon world reloading, instead of resetting.)
  • Made Metapotent Flashfur’s lightning brighter.
  • Changed force-setHealth and Flashfur’s invulnerability detection to use approximate equals, and not exact equals, to account for floating-point errors.
  • Added checks to the knockback() method for Boss entities.
  • Improved target setting immunity and target cancellation immunity for Boss entities.
  • Improved some other things related to Boss entity defence.
  • Reworked Entity Remover, adding a GUI with a die() toggle, leave-level calls toggle, invulnerability toggle, immovability toggle, and a /kick ban toggle. This should help with OP mobs from other mods killing you, teleporting you, or kicking you out of the world.
  • Updated defence against CompoundTag modification, so when getting the value of an Omni-Mobs tag, it returns 0. I also changed some other small things.
  • Improved Flashfur’s invulnerability detection against players.
  • Added some basic tests so it’s less likely that I’ll release a version with broken calculations, in the future. I will probably expand the amount of tests later. JUnit didn’t seem to work, so I had to make my own. They’re off by default, but you can enable them in the config.
  • Updated icon, because the mod isn’t just about Flashfur anymore, and made it show in the mod. I might change the icon again at some point.
  • 5% of the damage dealt by Boss entities now ignores vanilla defences such as armour and resistance.

Omni-Mobs 0.3.3.3

by Flashfur on Aug 17, 2025
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  • Fixed completely wrong percent damage calculations for every mob (using the % damage calculator method I added in the last update), where it used the attacker max health instead of the target max health. (I had to load a backup without the changes that I've been working on for the next update, to fix this. But it was important enough to do that.)
  • Removed left-over print statement.

Omni-Mobs 0.3.3.2

by Flashfur on Aug 15, 2025
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  • Some stuff I forgot. I hadn’t worked on Omni-Mobs for a while, and forgot to write down what I changed.
  • Fixed damage calculation on Flashfur’s and Silverlight’s swipe attack using the target max health for % damage in the area-of-effect. (It now applies the % damage individually for each entity.)
  • Updated percentage calculations, and upgraded immunity bypassing.
  • Patched Hyperlink 2.0 defeating Metapotent Flashfur.

Don't use this version, it has a critical bug that's fixed in 0.3.3.3.

Omni-Mobs 0.3.3.1

by Flashfur on Jul 13, 2025
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  • Removed random leftover print statements from the last update.
  • Added a try-catch block around Metapotent Flashfur’s loading and saving. (Hopefully just a temporary fix.)

Omni-Mobs 0.3.3

by Flashfur on Jul 12, 2025
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  • Added saving and loading to Metapotent Flashfur.
  • Fixed some issues when Metapotent Flashfur targets partially dead entities.
  • Made it so Flashfur’s invulnerability detection can delete Dragionn’s Stuff mobs.

Omni-Mobs 0.3.2.1

by Flashfur on Jun 23, 2025
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  • Made it so Metapotent Flashfur's Omni-Erasure move erases regular entities, and not just LivingEntitys.
  • Made it so Metapotent Flashfur can target entities that are partially dead.

Omni-Mobs 0.3.2

by Flashfur on Jun 22, 2025
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  • Made Metapotent Flashfur able to kill creative mode players. (Only if you hit him, so it isn’t annoying for mob battles.)
  • Made Flashfur’s anti-invulnerability erasure attack slightly more powerful.
  • Fixed Boss entity TP command immunity not working, and also possibly affecting other mods’ mobs.
  • Removed random leftover debug print statements.

Omni-Mobs 0.3.1.1

by Flashfur on Jun 10, 2025
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  • Fixed bugs with the despawn immunity upgrade from the last update.
  • Rewrote the entity force remove code.

Omni-Mobs 0.3.1

by Flashfur on Jun 6, 2025
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  • Updated coremod to not remove the ClassFileTransformer.
  • Made it harder to inject code into Omni-Mobs classes with Mixins.
  • Made it so Metapotent Flashfur will sometimes walk around when not attacking anything.
  • Increased despawn immunity of Boss entities, to a similar level to 0.2.6 Metapotent Flashfur.
  • Gave all Boss entities setPos and setPosRaw immunity (before, only Flashfur had them).
  • Gave Iron Golem setDeltaMovement resistance.
  • Gave all Boss entities /tp immunity.
  • Reverted the change in 0.3.0 that made it harder to target Omni-Mobs entities by getting the registry name, as it caused lag problems.

Omni-Mobs 0.3.0.2

by Flashfur on May 20, 2025
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  • Hopefully prevented crash when the game loads.
  • Added a config to disable the coremod.

Omni-Mobs 0.3.0.1

by Flashfur on May 20, 2025
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  • Attempted to fix Metapotent Flashfur's fallback mode.

Omni-Mobs 0.3.0

by Flashfur on May 20, 2025
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  • Reworked Metapotent Flashfur.
    • Substantially increased Metapotent Flashfur’s defence, as he doesn’t rely on the event bus anymore.
    • Quadrupled Metapotent Flashfur’s size.
    • Changed Metapotent Flashfur’s colours (light rays, lines, beam, etc) from pink and blue to purple and ice-blue.
    • Added secondary moving ice-blue lines on Metapotent Flashfur, that move in the opposite direction to the purple ones.
    • Reduced the intensity of the lines.
    • Added a star visual effect around Metapotent Flashfur, in his light rays.
    • Updated flash of white for Meta-Erasure. (It is smoother.)
    • Renamed Meta-Erasure to Omni-Erasure.
    • Updated the positioning of the bossbar.
    • Updated the colour of the “Flashfur” text on the bossbar.
    • Added “Metapotent” on the bossbar.
    • Added Totality Boom move.
    • Quadrupled the reach of Meta-Swipe (as he is quadruple size).
    • Changed the minimum teleport range from 15 blocks to 60 blocks.
    • Renamed Teleport to Meta-Teleportation.
    • Made Metapotent Flashfur attack all living entities, instead of just monster entities.
    • Added flash of white when you spawn Metapotent Flashfur in.
    • Added camera shake when you spawn Metapotent Flashfur in.
    • Added a sound when you spawn Metapotent Flashfur in.
    • Added Event Bus Override.
    • Replaced Metapotent Flashfur’s music.
      • Old Song: Frantic Fast Forward by Nicholas Panek from Pixabay.
    • Added Meta-Explode move.
    • Made Metapotent Flashfur teleport 2.5x more often.
  • Upgraded Boss entity defence.
  • Made it harder to target Omni-Mobs entities by getting the registry name. It was done to prevent Mindustry Units from kicking players with Metapotent Flashfur in the world. I could have also banned /kick while Metapotent Flashfur was in the world, but it didn’t work as well.
  • Made Flashfur’s anti-invulnerability stronger.
  • Made it so the Entity Remover toggles the die() method on shift right click.
  • Updated Entity Remover text.

Omni-Mobs 0.2.9

by Flashfur on Apr 26, 2025
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  • Increased Flashfur’s Swipe damage from 5% + 75 to 10% + 75.
  • Upgraded Boss entity defence.
  • Added healing ban and erasure to Flashfur’s attacks.
  • Added caching to immunity bypassing, so it doesn’t have to search through all the fields/methods every single time, hopefully increasing performance.
  • Increased chance of Silverlight using Lightning Bolt Projection if further away.
  • Made Silverlight use Lightning Shockwave to jump towards far away targets.
  • Added various minor immunities to Boss entities.
  • Increased Silverlight’s movement speed from 0.35 to 0.45.

Omni-Mobs 0.2.8.1

by Flashfur on Apr 5, 2025
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  • Reverted change to Boss entity immunity bypassing.

Omni-Mobs 0.2.8

by Flashfur on Apr 1, 2025
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  • Added moving text to Metapotent Flashfur’s Spawn Egg’s name.
  • Added Silverlight. (I wanted to give him more moves, but I ran out of ideas.)
  • Improved explosion visual effect.
  • Added note under the spawn eggs of the Dragionn’s Stuff versions of Alarm and Silverlight, if Dragionn’s Stuff is installed, saying that they are the Dragionn’s Stuff versions, and not the Omni-Mobs versions.
  • Fixed boss health not saving when reloading the world, respawning, or unloading and reloading the entity.
  • Removed random leftover print statement I forgot about, from quite a few updates ago.
  • Increased Boss entity immunity bypassing power slightly.
  • Fixed some bugs when playing with the mod in a LAN world. (Metapotent Flashfur still doesn’t work in multiplayer, but the other mobs should.)
  • Upgraded Metapotent Flashfur’s defence.

Omni-Mobs 0.2.7

by Flashfur on Mar 19, 2025
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  • Substantially increased Metapotent Flashfur’s defence.
  • Updated Metapotent Flashfur’s bossbar.
  • Increased the power of Metapotent Flashfur’s erasure attacks, and the Entity Remover.
  • Added setPos immunity to Flashfur.
  • Updated Entity Remover’s tooltip to be more informative, and it doesn’t have rainbow colours anymore.

Omni-Mobs 0.2.6

by Flashfur on Feb 27, 2025
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  • Fixed bug with Metapotent Flashfur’s anti-heal damage.
  • Fixed ModernFix incompatibility. (Thanks K.K Gaming for bringing it to my attention)
  • Hopefully fixed Metapotent Flashfur targeting entities just outside of render distance, and then teleporting to them.

This version is so old - I don't know why it's getting so many downloads all of a sudden.

Omni-Mobs 0.2.5

by Flashfur on Feb 18, 2025
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  • Fixed an issue with Metapotent Flashfur’s music.
  • Added back custom attack targeting to Metapotent Flashfur, like in older versions of the mod, but the code is a bit better, and it has an infinite range. This means he can now target invulnerable entities. (Still has the issue of targeting entities underground though)
  • Added anti-regeneration damage to Metapotent Flashfur’s Meta-Swipe and Meta-Beam.
  • Added a config file, which lets you enable and disable music, and camera shake.
  • Improved Metapotent Flashfur’s erasure immunity.
  • A few other changes, but I forgot what they were.
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