2.5D shooter IK

Unity Engine
1

I’m not very good at anything animation, but I’m making a 2.5D shooter. So I needed to add some IK to get the arms/guns to rotate with the mouse. I have the mouse rotation working, but the arms follow super weird. I got the basics of IK working (like it does stuff, just it rotates weird). I need some pointers on how to make it rotate and point at a target object.

Is there a good way to approach this problem? Do I need to edit the anim.SetIKHint’s? Or just the basic anim.SetIK (what I currently have)?

Heres my code so far (pretty much just what the docs have):

if (ikActive)
        {
            if (lookObj != null)
            {
                anim.SetLookAtWeight(1);
                anim.SetLookAtPosition(lookObj.position);
            }
            if (rightHandObj != null)
            {
                anim.SetIKPositionWeight(AvatarIKGoal.RightHand, 1);
                anim.SetIKRotationWeight(AvatarIKGoal.RightHand, 1);
                anim.SetIKPosition(AvatarIKGoal.RightHand, rightHandObj.position);
                anim.SetIKRotation(AvatarIKGoal.RightHand, rightHandObj.rotation);
            }
        }
        else {
            anim.SetIKPositionWeight(AvatarIKGoal.RightHand, 0);
            anim.SetIKRotationWeight(AvatarIKGoal.RightHand, 0);
            anim.SetLookAtWeight(0);
        }

The rightHandObj and lookObj are both set to a moving target that rotates with the mouse, my arms just don’t rotate right (they do like left/right/all bendy instead of up/down like I want.

Any help would be greatly appreciated! :slight_smile:

2

Anyone know this? Or have a tutorial about IK in unity? Or some resource about how to get IK working properly?

Thanks! :slight_smile: