Mecanim and retargeting one-arm characters

Unity Engine
1

Hello,

If I have a character that has only one arm or leg due to an accident or he has a gun arm like Barret from FF7 for example, it will not work as humanoid because it needs all the bones for the arms for the retargeting. If its missing one, then mecanim wont accept it as a humanoid. If anyone found out how to do this please let me know. As far as I know its not possible at the moment.

It would be great if we could retarget parts of the character. Another use case is for an undead or zombie that has part of an arm missing. We could have a mask in the avatar setup tab so that we can mask the bones we are not using for that avatar.

That way when retargeting to my one arm character, the masked arm or bones from the two arm character animation would just be ignored. Its probably not as simple as I make it sound but this feature would be helpful.

2

Wouldn’t you just have a full skeleton with a limb removed from the skin?

3

Correct me if I’m wrong but I was under the impression that the total number of bones per character does affect performance. In that case why waste extra bones when they are not needed ?

4

The number of bones weighted to skin, and the number of weights per bone/vert (i.e. 1, 2, 4) is the performance hog…since your empty limbs aren’t doing anything (and presumably they have no keyframe data, can be nicely compressed) you should be fine.

5

Great! Thanks for the explanation. I will give it a try.