Minecraft Version

1.19.2

KubeJS Version

1902.6.0-build.142

Rhino Version

1902.2.2-build.268

Architectury Version

6.5.85-fabric

Forge/Fabric Version

Fabric 0.14.19

Describe your issue

When using entity.attack(), KubeJS spams the console with huge stacktraces, which cause a stack overflow and completely freeze the server.

Code:

EntityEvents.hurt(event => {
  event.cancel();
  event.entity.attack(event.getSource(), 2.0)
});

Crash report/logs

https://hastebin.skyra.pw/dehigatepe.prolog

This is because entity#attack causes the hurt event to fire again, thus triggering your code again and so on.

To solve this use a variable like so:

let noRecurse = false
EntityEvents.hurt(event => {
  if (noRecurse) return

  noRecurse = true
  event.entity.attack(event.getSource(), 2)
  noRecurse = false
})

This is because entity#attack causes the hurt event to fire again, thus triggering your code again and so on.

To solve this use a variable like so:

let noRecurse = false
EntityEvents.hurt(event => {
  if (noRecurse) return

  noRecurse = true
  event.entity.attack(event.getSource(), 2)
  noRecurse = false
})

How did I not think of this 🤦‍♂️
Thanks!