root motion

Rob

Hey Mitch,

I've setup the rootmotion stuff for my project now and everything works.
But as soon the spine characters x position resets within his animation(because of the loop) the delta from the rootmotion gives 0 for one frame, wich causes the player to stuck for a very short amount of time. Any way to fix that stuttering?

Here an example project with a sample wing graphic just for demonstration ->

https://dl.dropboxusercontent.com/u/269 ... t_test.rar

It's made in unity 4.6.1. You can press right arrow to move the spine graphic and the console outputs the delta x.

edit: maybe I made some error in the SkeletonAnimation.cs. I needed to edit some stuff to get the rootmotion working there. The animation self is just a plain move to the right direction with the root bone without any speed decrease, it loops perfect in spine.

Mitch

I definitely encountered this too. I even left a comment heh. I'm pretty sure this was the code that dealt with that issue (from my original root motion example)

int loopCount = (int)(t.Time / t.EndTime);
      int lastLoopCount = (int)(t.LastTime / t.EndTime);
      //disregard the unwanted
      if(lastLoopCount &lt; 0) lastLoopCount = 0;

Rob

Hm, so I already have that code in my file. Commenting out the line didn't helped.
Normally, the delta value never should go to zero when I hold right, right?
Or we talk at cross purposes o.0. Did you already fix the issue ?

My last guess was, I made an animation mistake in Spine self, but I moved the graphic just with the root bone and exported everything.

Not sure what to do next. Root motion is not a "must have" in my game, but it would be a huge time saver.

Rob

By the way,
I reckognized, if you put the timescale on 0.2, you can see it better how he stops at the time it loops for about 0.5 seconds. I remember your video earlier on youtube. Your character had applied the rootmotion script and everything run fluently.

Also, if I use your unmodified root script standalone, the error happens too. The only thing I wrote by myself, is the stuff you added to the SkeletonAnimation.cs because the file differs now, because spine is now further updated since you wrote the script.

Mitch

Rob wrote
By the way,
I reckognized, if you put the timescale on 0.2, you can see it better how he stops at the time it loops for about 0.5 seconds. I remember your video earlier on youtube. Your character had applied the rootmotion script and everything run fluently.

Also, if I use your unmodified root script standalone, the error happens too. The only thing I wrote by myself, is the stuff you added to the SkeletonAnimation.cs because the file differs now, because spine is now further updated since you wrote the script.

Yyyyep ... heh I dunno whats going on there. I will take a look at it hopefully tonight or tomorrow 🙂 I have some contractual deadlines this week, but I'll definitely get to it by the end of this weekend. I'm giving a Spine talk for global game jam so I definitely want to have some cool solid examples for everyone heh. Sorry its so screwy now O_O

Rob

Hey,...take your time ; )

no rush. I don't need the root motion stuff so fast.
Just nice to know it will get fixed later any time.

Good luck on your jam : P

Rob

Did you find anything out yet? I'm right now implementing the movement stuff and want to try out my implementation of the root motion.

If you haven't time right now, the stuttering won't hindering me anyway, just need to be fixed later on.

I already asked on the forums, but couldn't find an answer for one more or less logical question:

My platformer script will let the character run slopes and uses a normalized speed variable at the end to make him move. At the moment, I use the "delta" variable from the root motion script and added it to the "normalized speed" value from my script. So it acts relatively to any delta movement.

It's kind of a hack, that's why I'm interested how a more experienced programmer would solve this? If I understand it right, the delta value is nothing other than a relative offset from the root bone from the last tick to the next. Getting a relative connection to my normalized speed was my first thought^^ I'm still a newbie in programming.