You’ve got picked a tough nut to crack. Climbing on arbitrary surfaces will be fairly difficult. Particularly contemplating all of the (typically literal) nook instances you may have to pay attention to. So I can not provide you with a replica&paste code resolution which is simply going to work for anybody. I can solely present some advise tips on how to determine one out of your individual.
Utilizing IK is definitely the suitable strategy to do it. However protecting the IK weight at 100% with a static IK place is not going to work as a result of, as you seen, it completely glues the hand/foot to the goal. You need that by means of some phases of the climbing animation, however not all of them. The answer will be to alter the IKWeight of every limb through the animation.
- 1.0 weight through the section the place the character is grabbing the maintain
- steadily scale back it to 0.0 through the let-go section
- Set the brand new IK goal to the following seize place whereas the burden is 0.0
- steadily improve it to 1.0 whereas the character begins grabbing once more
One other technique is to maintain the palms and toes underneath 100% IK always however transfer their IK targets. That requires a script that determines the place of every new maintain on the climbing floor after which, when altering from one maintain to a different, interpolates the positions between them. Sure, that implies that you mainly do a lot of the climbing animation by way of code as a substitute of in your animation program.
A great way to do both is to create a brand new MonoBehaviour which exposes the IK targets and IK weights (and possibly additionally IK hints) of the animator for all 4 limbs as inspector properties. You’ll be able to then create animation actions inside Unity for these properties and put them on a separate layer of your animation controller. That manner you possibly can tweak the IK weights through the animation utilizing curves.
You may additionally need to try the brand new animation rigging system. It’s an alternate IK system that gives much more flexibility. It means that you can implement IK for any bone, not simply palms and toes. It additionally has some fascinating specialised IK controllers. For instance, the Multi-Place Constraint could possibly be helpful to steadily shift between completely different climbing holds.
