Add EntitySpawnByEntityEvent

[NoyException]

Is your feature request related to a problem?

I'm currently making a roguelike plugin. I need to find out whether all the enemies are killed to accomplish a combat, so that's why I need to take those entities spawned by enemies into consideration (They should also be considered as enemies in this combat). So I wonder how can I find the entity who causes a spawn event.

Describe the solution you'd like.

Add EntitySpawnByEntityEvent which inherits EntitySpawnEvent

Describe alternatives you've considered.

• (EDIT:) Refactor SpawnReason to make it carry more context
• Add a method getWhoSpawn() in EntitySpawnEvent
• Add a method getWhoSpawn() in Entity

Other

No response

[electronicboy]

entities spawned by enemies, such as? Vanilla doesn't really have much of a "spawned by" concept, and I ponder the capability of exposing such a concept without having any form of proper cause API would just make such a concept be relatively broken in general, especially when it comes to determining what means it was "spawned by X"

[NoyException]

entities spawned by enemies, such as? Vanilla doesn't really have much of a "spawned by" concept, and I ponder the capability of exposing such a concept without having any form of proper cause API would just make such a concept be relatively broken in general, especially when it comes to determining what means it was "spawned by X"

For example, a Jokey can spawn a vehicle, an egg can spawn a chicken, a small slime can be spawned by a dying big slime, an endermite can be spawned by a ender pearl, etc

[electronicboy]

All of those generally sound okay, bar the slime one, as that falls into a really weird area as that's not considered a 'spawn' as such, that's effectively a transformation (and is already exposed in a specific event)

[NoyException]

All of those generally sound okay, bar the slime one, as that falls into a really weird area as that's not considered a 'spawn' as such, that's effectively a transformation (and is already exposed in a specific event)

You're right, there's already a SlimeSplitEvent. But what about the others? I thought, maybe we can refactor the SpawnReason, make it an abstract class instead of a enum to carry more information?

[NonSwag]

All your examples can be covered with the entity spawn event and the spawn reason

[NoyException]

All your examples can be covered with the entity spawn event and the spawn reason

Yeah, but the SpawnReason is a enum and it can't tell me which entity causes the spawn. That's why I edited the issue to ask whether we can make it more informative.

[Doc94]

Well this issue was already talked in: #11564 #10527 #6487
and have a PR related in #7377

not sure if cover all the cases here, but exists the disc about "i need know how this spawn" like this player/dispenser spawn a Wither...

[NoyException]

Well this issue was already talked in: #11564 #10527 #6487 and have a PR related in #7377

not sure if cover all the cases here, but exists the disc about "i need know how this spawn" like this player/dispenser spawn a Wither...

This almost solves my problem. They nearly cover all the cases but jockey (and other compound entities), Vex and Evoker Fang(and other spells).

EDIT: I hope this PR merge as soon as possible. By the way, what I want is a unified interface to get the spawner entity, instead of collecting the information everywhere