When im rotating the knee my leg is doing something weird

Im new btw
unity 2020.3.22f1(if i need to mention)

 

THe "thigh" of your character has non-uniform scaling. Non-uniform scaling WILL propagate to children resulting in this effect.

To avoid this problem, you need to design hierarchy differently. Make this sort of hierarchy for a leg:

Code (csharp):

1.  
2. UpperLeg(Empty)
3. +-UpperLegMesh
4. +-LowerLeg(Empty)
5.   +-LowerLegMesh
6.  

In this scenario, UpperLeg(Empty) and LowerLeg(Empty) should have scale of 1;1;1. And "UpperLegMesh" would be a child of "UpperLeg(Empty)" and "LowerLegMesh" would be a child of "LowerLeg(Empty)". You can scale UpperLegMesh/LowerLegMesh however you want.

Bascically, the rule of the thumb is that you should not use non-uniform scale on objects with children.

 

I forgot to mention
when im doing it with the hand it doesnt happen for some reason

 

It means that either your hand does not have non-uniform scale, or it has no children.

Click through the hierarchy and take note of elements that have different values in scale fields for x/y/z.

Like I said - the rule of the thumb no non-uniform scaling for object that have children.

 

tysm

hy hand is
head
+body
++shoulder
+++hand

my shoulder is 1/1/1

 

Does it matter if the empty one will be capsule or anything else?

 

If it's a capsule then it's not empty.

 

If it is a capsule, then it is not an empty.
An empty object is bare transform.
So you have UpperLeg, as an empty. Then you attach LowerLeg to that, also an empty object with nothing, except at a different position. Then you attach capsule to UpperLeg and LowerLeg, as children. And position/scale them however you want.

Like I said, the general idea is that you can't have non-uniform transforms on objects that have children.

 

When I saw this thread I immediately forgot I was on a gamedev forum and was thinking about recommending some Physical Therapy exercises. I guess I'm showing my age now