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YEP_BattleEngineCore hangs battle screen whenever HP/MP Regeneration (positive or negative) is used in-battle

BMM Archive · July 15, 2026

Preserved forum archive. This topic stores the original first post and locally mirrored RPG Maker Web attachments when available. It is posted by the BMMPlay archive account, not by the original creator.

Original Source

  • Original title: YEP_BattleEngineCore hangs battle screen whenever HP/MP Regeneration (positive or negative) is used in-battle
  • Original author: LetsTryThatAgain
  • Original date: May 24, 2020
  • Source thread: https://forums.rpgmakerweb.com/threads/yep_battleenginecore-hangs-battle-screen-whenever-hp-mp-regeneration-positive-or-negative-is-used-in-battle.121976/
  • Source forum path: Game Development Engines > RPG Maker Javascript Plugins > Javascript/Plugin Support

Summary

I have a state called "Cursed" where it drains SP (actually MP) and two custom parameters, Sanity, and Moxie. Using Yanfly's Buffs and States Core, I create a notetag that lets me drain the Sanity and Moxie. For the SP drain, I just set the MP Regeneration to a negative number. Testing this out, all goes well. The first turn the state is applied, it drains the parameters properly. The next turn after, however, the battle screen just hangs there, without moving forward. After doing some digging, I remove the...

Archived First Post

I have a state called "Cursed" where it drains SP (actually MP) and two custom parameters, Sanity, and Moxie. Using Yanfly's Buffs and States Core, I create a notetag that lets me drain the Sanity and Moxie. For the SP drain, I just set the MP Regeneration to a negative number. Testing this out, all goes well. The first turn the state is applied, it drains the parameters properly. The next turn after, however, the battle screen just hangs there, without moving forward. After doing some digging, I remove the Sanity and Moxie drain, thinking I applied it incorrectly. It didn't fix the issue. So I re-created the state, and still gave the same problem. Then I removed the SP drain, which fixed the problem.

After checking through my plugins, I remembered having this similar problem when trying to implement a paralysis state. I turned off Yanfly's Battle Engine Core because that's what I used to create that paralysis effect and the state worked fine. I checked through the plugin, and I didn't modify anything. I've been isolating the plugin with some others and the effect refuses to show itself for some reason. This is my plugin list:
Plugin list.png


And this is the project in case you want to root around to find the problem:



Thanks to all who can help me with this, I need Battle Engine Core because I have a state that turns you into a Slime, and that needs Battle Engine Core to create the visuals.

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