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[1.16.x] Get Entity from Wildcard EntityType


urbanxx001
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For an EntityType<?> I can use getClass(), but the methods available are generic, since it's a wildcard. I would like the specific entity class in order to retrieve attributes and check a few other data. Since methods like getAttribute() aren't directly available, this can (probably?) be accomplished with:

if (MobEntity.class.isAssignableFrom(entityType.getClass())) {
   EntityType<? extends MobEntity> entityType1 = (EntityType<? extends MobEntity>) entityType;

   AttributeModifierMap.MutableAttribute attributeMap = null;
   Method[] methods = entityType1.getClass().getMethods();
   for (Method method : methods) {
      if (method.getReturnType() == AttributeModifierMap.MutableAttribute.class) {
         attributeMap = (AttributeModifierMap.MutableAttribute) method.getDefaultValue();
      }
   }
}

However this seems over-complicated. Alternatively I can cast ? to type T with a helper method, and then would somehow need to instantiate it:

T entity = new T(entityType1, world) {};

But obviously T can't be used in that manner. Am I overthinking this?

Edited by urbanxx001
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Grab the data on first call instead of immediately. Then you'll have an instance of the entity to grab everything from. The entity type is used to create a singleton from the entity. If you needed a specific attribute map of a type, then you should grab that from GlobalEntityTypeAttributes and calculate there. What is the use-case for this?

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Thank you so much, I'll use GlobalEntityTypeAttributes then. The EntityType (a set of them actually) isn't being grabbed from an Entity in the world, but instead from the ForgeRegistry. It's being used for a database. I may still need the actual class, as I need to check if IAngerable is extended by it (to determine if mobs are Neutral or not; isPeacefulCreature only checks if the mob is peaceful or hostile). 

Edited by urbanxx001
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[java.lang.ThreadGroup:uncaughtException:1052]:       at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) [21:36:39] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:       at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) [21:36:39] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:       at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) [21:36:39] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:       at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) [21:36:39] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:       at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) [21:36:39] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:       at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) [21:36:39] [main/INFO] 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    • i tried that but it says the same error
    • No, and it is in fact broken. Firstly, you never register this type, so it will never work correctly. Secondly, you must not create registry entries in static initializers. You did it correctly above: Use this instead. However this is in the wrong class, as particle types (as all registry entries) must be registered on both sides (client and server). As such doing this in a client-only class will never work right.
    • Every time you post you post in the wrong subforum and I have to move your thread. Please take the hint. This is broken. You must not return null from this method. Use NetworkHooks.getEntitySpawningPacket. You must also only spawn your entity and start riding it on the server.
    • Sorry about the wait, I managed to fix the issue by loading in one of my server providers presets and stealing the jar from that. Sorry about wasting your time.
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