[Solved] Modifying Entities (AI and Invulnerability)

Plugins Plugin Development
1

Hello everyone,

i’d like to know how some could modify the AI of an entity (in my case a villager). I want this villager to just stay where he is and optionally look at the nearest Player around. I looked through the avaiable data manipulators and found something that should fit my needs: AgentData

I just have the huge problem that i don’t even think of how i could work with it. It just accepts DataHolders and i found absolutely no documentation on how i should be able to modify his behaviour then.

Second:

InvulnerabilityData javadoc says:

Signifies that an Entity is "invulnerable" to any sort of damage for an expiring period of "tick"s. Usually applicable to all Entity.

So far so good, but when i look at the javadoc for the function setInvulnerableTicks it says:

Sets the amount of ticks that the Wither should stay invulnerable for. Note: This causes an explosion when the time runs out.

Okay, neat feature, but i don’t want to sacrifice my villager when he isn’t god anymore…

Also, is there anyways a magic number to make him invulnerable forever?

Thank you very much!

2

Lol, the javadocs probably need to be updated. While most entities can be invulnurable, the explosion is only created for Withers.

3 Likes
3

You could give a slowness effect to the villager. (if this is already implemented)

4

How about noai?

5

Currently, all we can support is disabling/enabling entity AI.

To disable AI:

entity.remove(AgentData.class);

To enable AI:

entity.offer(entity.getOrCreate(AgentData.class).get());

That is the simplest I can make it.

Re the wither javadocs, that’s specific to withers, I’ll make a note of it for the next sweep of javadoc cleanups.

entity.offer(entity.getOrCreate(InvulnerabilityData.class).get().setValue(Integer.MAX_VALUE));

Unfortunately, Minecraft doesn’t persist this type of information, but I’m planning on writing a workaround with storing sponge specific data for entities to retain their invulnerability.

1 Like
6

Disabling/Removing the AI fits my needs, so thats fine, never thought of removing the AgentData.

Im gonna write a small helper that refreshs the invulnerability until the workaround is out.

Thank you very much sir.