It's a short line I am having an issue with:

                        List<LivingEntity> entities = player.getLevel().getNearbyEntities(LivingEntity.class,
                                player.getBoundingBox().inflate(5,0,5), LivingEntity::isAlive);

On the LivingEntity::isAlive part where it says "is not a functional interface"

Any suggestions?

you need a EntityPredicate and not a Function 

3 hours ago, Luis_ST said:

you need a EntityPredicate and not a Function 

How can I do that?

7 hours ago, diesieben07 said:

Incorrect.

Look at the parameters of getNearbyEntities. There is no predicate parameter. You can pass one indirectly using the TargetingConditions parameter.

I'm still a bit lost, here is a picture just in case:

https://imgur.com/a/50EZf6l

9 minutes ago, diesieben07 said:

 

I am deeply sorry and apologize, my java knowledge isn't the best but sometimes simple stuff like these confuse me but can do other complex stuff,

I've put this and pretty sure this is wrong as well, could you maybe please show me the correct way

                        List<LivingEntity> entities = player.getLevel().getNearbyEntities(LivingEntity.class,
                                TargetingConditions.DEFAULT,
                                player.getBoundingBox().inflate(5,0,5), LivingEntity::isAlive);

 

7 hours ago, diesieben07 said:

Incorrect.

Look at the parameters of getNearbyEntities. There is no predicate parameter.

it was the 1.16.5 name for TargetingConditions

16 minutes ago, Feroov said:

I'm still a bit lost, here is a picture just in case:

I'm not sure which method you use, since there is only one method in Level with the name getNearbyEntities and it requires 4 parameters:

getNearbyEntities(Class<T>, TargetingConditions, LivingEntity, AABB)

and not

getNearbyEntities(Class<T>, AABB, TargetingConditions)

7 minutes ago, Luis_ST said:

it was the 1.16.5 name for TargetingConditions

I'm not sure which method you use, since there is only one method in Level with the name getNearbyEntities and it requires 4 parameters:

getNearbyEntities(Class<T>, TargetingConditions, LivingEntity, AABB)

and not

getNearbyEntities(Class<T>, AABB, TargetingConditions)

Yes it worked now, thank you so so much for all who helped appreciate it