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I have a custom mob named Trog that has custom animations. I'm trying to activate those animations from custom AI classes, but it's not working.

Here's the catch - if I activate the animations from update() in EntityTrog, everything works fine. It's only when I try to activate the animations from elsewhere that I have issues.

I suspect I'm running into a pass-by-value issue, where the entity whose animations I'm trying to activate is actually a copy of the real entity. Except then nothing makes sense in any of the vanilla AI classes, because they do the same thing.

Here's my code. I could use some help troubleshooting this.

https://pastebin.com/48DMuwwv

EDIT: The console print line IS appearing, so it's not a problem with the AI task itself.

I was able to create a stop-gap solution by changing the type of "entity" from IMCAnimatedEntity to EntityTrog. Information about EntityTrog's animationHandler seems to have been getting lost when it was cast to the parent type. (EntityTrog extends IMCAnimatedEntity)

However, I want to be able to use this AI class for more than just EntityTrog. GetAnimationHandler() exists in IMCAnimatedEntity, and is overridden in EntityTrog, but it seems like casting EntityTrog to IMCAnimatedEntity is preventing it from working.

I tried moving the initialization of animationHandler to IMCAnimatedEntity (and then calling this.animationHandler=new AnimationHandlerTrog() in EntityTrog), but that didn't work either.

Can you think of a way around this?

Oh boy. This is even MORE fun.

Okay, so I decided to move the actual calls to animationHandler into the entity class itself, because the names of the animations will likely be different for each entity. But now I'm encountering an even more baffling issue.

I've created a super simple new AI class called EntityAIPlayRandomIdle. Basically, it does a random number roll to see if the entity should play an idle animation, then sets the boolean flag playAnim_idle to True. (The reason I'm using an AI class is so the masking done by the mutex bits will keep idle animations from playing when the entity is suppose to be fleeing, or doing something else more important).

Then, in the onUpdate() method inside EntityTrog, I check to see if playAnim_idle is True. If it is True, and a cooldown has expired, the idle animation should play. I put in a console print line to display text on the console when both these conditions have been met and the animation is activated.

Here's where things get weird: Everything works fine UNTIL I add the condition that checks playAnim_idle == True. The console still prints out the line saying that the animation has been activated, meaning that the conditions have been passed, but the animation doesn't actually play.

There is no reason for this to be the case. None. Whether your If statement is "If (a==true)" or "If (a==true and b==true)", if the condition(s) have been met, the code inside the If statement should execute the same way it always does.

Here is the relevant code. I am literally pulling my hair out about this. It makes no logical sense. There is no reason why an AI class should interfere with the animation actually playing once ActivateAnimation() has been called.

https://pastebin.com/52RQLsWX

Quote from Choonster»

I suspect you may be running into the issue of logical sides again. Both sides have their own copy of the entity, each with its own playAnim_idle field. The AI task that sets it to true only runs on the logical server, so only the logical server's copy of the entity plays the animation. This field is never synced to the logical client, so it never plays the animation.

Looking at MCAnimator's documentation, it appears you need to activate the animation on both logical sides. The best way to sync the playAnim_idle flag is probably using the entity's EntityDataManager.