Versions

• Minecraft: 1.15.2

• Forge: 31.2.37

• Vampirism: 1.15.2-1.7.0

• ModPack: N/A

Issue Description

vampire villagers cause a ticking entity crash when near a zombie

Reproduce Steps

1: become a vampire
2: spawn a villager and convert it to a vampire
3: spawn a zombie near said villager and the game will crash momentarily

Additional Information

crash log: https://gist.github.com/lag42/26a23340acfddb448800e7e1b702e42e

Could not reproduce this with forge 31.2.0, will test this further at the weekend.

@lag42 Could you reproduce this by yourself?

that crash log was after several attempts to reproduce it to figure out exactly what happened and i found that consistently converted villagers would crash the game when in aggro range of a zombie, so i tried it first thing in a new world and it crashed

i can 100% reproduce this with forge 31.2.0 or 31.2.37, java 1.8.0_261 with no arguments, and the vampirism 1.7.0 alpha in a fresh instance and a fresh world without anything else added, not even guide-api VP

Can confirm. Only occurs outside Dev env. Maybe related to ATs

For some weird reason func_220988_c does not properly override its parent in production.
Therefore a unboxing nullpointer occured in func_220987_a

Thank you for reporting. Check out the latest fixed alpha