Pigmen when summoned with agro via the NBT tag does not attach. Was testing this on 14w05b and the Pigman is agro, the new mob Ai in 14w06a has broken pigman "Angry" NBT tag.
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@Noah you mean to say, It would be nice, if convenient, for the Mojang team could address this issue? It's inconvenient for me too but lets not sound like it's a demand. It would be nice if it was addressed is all.
On a side note the Pigman anger tag is broken much like the "Angry" wolf tag has been broken for a long time. Unless you damage one physically yourself the are not agro.
Can still confirm for 14w11b a spawned Pigman with a positive "anger" tag is not agro until attacked or if nearby Pigmen are attacked.
Have tested attacking Pigman, forcing agro, then spawning Pigmen with and without a positive anger tag. Pigmen spawned after initial attack will not attack player. Relogging will also remove agro even if anger tag still shows positive number.
Have only tested in single player world.
In addition, logging in and out will cause the pigman to lose track of the target and go passive. This effect is apparent in single player and can be easily abused.
Confirmed for 14w20b.
But I'm sure this bug is caused by the Angry tag not the mob. I've tested this with other mobs. You cannot summon angry Endermen or angry Zombie Pigman, and Wolves only have an angry appearance. Perhaps the bug report should be merged with MC-33558 and include Endermen.
{Angry:1} tag does not work when summoning
Yes I noticed this because I was trying to work on my adventure map and use the pigmans new AI to make them search for you in a maze but since I couldn't get the anger tag to work I wasn't able to test it. It would be nice, if convenient, for mojang team to address this issue.
@Pete I didn't mean it to be a demand, sorry if it seemed that way. Never the less, I fixed it.