[1.8] Multi hitbox entity

[delpi]

I've got a question about the construction of the the child entities that just doesn't make sense to me.

 

I build a setup similar to the enderdragon for multiple parts.  Actually for now, I'm just messing with a head.  Everything is working right and I even went so far as to outline the hitbox corners in flame just to make sure I know where it is on the client (also did on server just to make sure).  Anyhow, I degrees.  The point is its there and in the right spot.

 

Here is the problem, I can't hit it.  It never registers a hit

 

Added this to check

    @Override
    public boolean attackEntityFrom(DamageSource source, float amount) {
    	
    	System.out.println(" - hit");
    	
    	return true;
        //return this.isEntityInvulnerable(source) ? false : this.entityDragonObj.attackEntityFromPart(this, source, amount);
        
    }

 

Now for the question, it doesn't appear in other example and in the enderdragon case they ever spawn these child parts.  If it is never spawned, how does the system know to track include it in a search for a hit? 

 

This is probably obvious and I suspect what I'm messing up.  I've searched and search and don't see it happening in the enderdragon.

[Sakuya is my waifu]

I've never seen myself, but you can check ender dragons hitboxes ingame using F3+B. but smaller mobs don't have multiple hitboxes

https://goo.gl/photos/g1nDBbodVN52gJiA7

[Abastro]

I think this method: Entity#getParts() is important.

You should return the dragon parts there.