Check if entity was spawned from mob spawner?

I'm trying to do a check in my plugin to see if a killed mob was spawned in via a spawner, but I can't find anything pertaining to it, not in the Bukkit API, nor on the Internets. Is there a method for it, or will I need to use a "trick" of some sort?

P.S. I'd be entirely fine with checking how much fall damage the mob sustained (as that's how mob farms work), but I can't seem to figure that out either.

 

I've done this in plugins of mine with metadata.

Just listen to the spawn event and assign metadata for all mobs from spawners, then check whether or not the mob has your metadata.

 

Ah, alright then. Would you by any chance know how to check how much fall damage the mob has sustained? I'd like to disable drops from those giant sky spawners (not sure if you know what I'm talking about) as well.

 

Probably listen to the EntityDamage event and check if it was by falling and then get the damage.

 

Alright, thanks for the help!

 

https://bukkit.atlassian.net/browse/BUKKIT-2598

Funny how we both ran into the same problems. Yep, store the entity ID or UUID in a hashmap/set and mark entities as being spawned like that this way.

 

Alright, I'm trying to add the metadata to the mobs, but I'm pretty confused as to how to set it. I'm supposed to use a String and a MetadataValue, but I have no idea how to create the latter.

EDIT: Never mind, I found a thread that said to create a new FixedMetaDataValue, rather than a MetaDataValue.

 

I would personally use a hashmap for this, mostly because optimization is lame.

 

Meh, let's just say HashMaps and I aren't the best of friends. I should really look into learning more about them...

 

I could help you with hashmaps if you have Skype: ira.sancti

 

I know this is an old thread but I'm trying to do exactly the same thing (keep track of what the entity spawn reason is - shame this isn't saved to the entity by default).

Do you mean to say that keeping a local hashmap would be better for performance than stored it in the metadata? I'm partial to using the metadata as it just seems cleaner to keep the data with the entity but if there's a significant performance...