Welcome back everyone to America Blue's new VR tutorials in Unity. So I previously made a four-part tutorial series on how to make a full body VR rig on my main YouTube channel, Villain, and today I have the pleasure to share with you this video, which will not only

resume all of that series in a single one, but show you a better and more robust way to do so with Armor's IK, procedural walking, and blends animation. But before we begin, you know the drill; feel free to support my work on Patreon where you will be able

to find the source code of all my tutorials and exclusive content, like this special overview of how I recreated Beat Saber in Unity using only ChatGPT. But now, without further ado, let's get started. Okay, so I'm inside a very simple Unity project. I already made a VR setup

with and presents using the MRTK (Mixed Reality Toolkit). Now, of course, this tutorial can work with any VR SDK; you will only need the position of the hands and of the head. But the first thing that we are going to need is, of course, a 3D character model.

So what I'd like to do is go to Mixamo. There you can download any character that you want. In my case, I'm going to download this one. So let's click on 'Download', select 'FBX for Unity', and click on 'Download' again. Now, once it is

downloaded, you can simply drag it into the project folder of your Unity project, and there you go. At this point, it should look like this. Now, a little tip: if you have no materials showing on the character, you can actually go to 'Materials' and in 'Location', select 'Use External Materials'. Next, make sure that

The animation type of this Avatar is set to humanoid. You can do so here on the Rig tab, then on Animation Type: Humanoid, and then click on Apply. But now that's done, we have a nice-looking character in our project that we can drag into the AR...

key. There it is. We can move it to the side like this, and we are now ready to use it as our own VR body. Okay, so a naive way to make this character follow our controller would be to go into its bones, like here in their spine, and for

example, move the hand bone to the controller position. But as you can see, there's just one little issue: the rest of the arm doesn't follow. So to fix this, we are going to use inverse kinematics. Now, to start with kinematics, we need to go to Windows, Package Manager,

Unity Registry, and search for the Animation Rigging package. There it is. We can select it and click on Install. Once downloaded, we include the package manager, and if we select back our character, we can rename it "VR Character RK". Let's go to the Animation Rigging tab that was recently added and

select Bone Renderer Setup. As you can see, this has added some gizmos to display the bones of our character, and that we will use to easily select them from the Scene view. By the way, you can even change its color here. But now let's get started with the arm IK. For this,

we need to add some constraints to the rig that we can see here. I'm going to create an empty child to the character IK, that I can rename "VR IK Rig", and then add a Rig component to it. Now, as you can see, we have an error showing. So to fix this,

Let's go back to the character IK add component and add a Rig Builder. Finally, we can then drag the VR IK rig to the Rig Builder. There you go! Now we are ready to add some new constraints. I'm going to create a new empty game object

call it "Right Arm IK". We can then add a new component called "Two Bones IK". To set up this component, we first need to click on one of the first bones from the right end. This should make you select this Mixamo rig right hand game object. So let's

now go back to the Right Arm IK, drag it to the tip, and here is the real magic. Now let's right-click on the component and select "Auto Fill from Tip Transform". As you can see, this has autocompleted the two other bones, so the root and the

mid, but also added two empty game objects for the Target and the Hint. Next, we need to place them correctly. I'm going to select the Target, press the Ctrl key, and then select the Mixamo right hand from earlier and go to Animation Rigging > Align Transform. Here it is. As you

can see, this has automatically placed the Target to the hand position. Now for the Hint; this is used to say in which direction the arm will fall. So what we can do is simply reset its position, then place it below and behind the character, something like 0.5, -0.5,

-0.5. And there you go! Now if I click on play… oops! As you can see, the character is now taking a weird position, and this will be fixed later on, so don't worry about it. But if I move the right arm's Target, the rest of the arm follows.

Whoa, this is so cool! But you know what we have to do now? If we leave play mode, we simply need to repeat this again, but for the left arm. [Music] There you go! Now I have another two bone constraints, but for my left arm this time.

And as you can see, my left arm target is placed on the left and positioned with the left hand behind the left arm at -0.5, -0.5, and -0.5. And if we click and play... there you go! As you can see,

both our arms are controllable simply using the target. That's awesome! But now, one big question is on everybody's mind: how can we control the legs? We actually have two ways of doing this. The first one is animation-based. This is the method that I covered previously in my

tutorial series on how to create a VR body, which uses a working animation and adds IK layers on top to bend the knees in the animation. But for this tutorial, we are going to use the second method, which I think will give us better results. And for this method, it is to

create the whole animation using IK. Now, for this, we are going to use a script from the Unity channel that made a similar system for this working robot. Anyway, the first thing we need to do is add two bones for IK for both legs as well, which you already know how to do

from the arm setup. So let's do a little bit of video speed-up magic and see you in the future! [Music] [Music] There it is! So as you can see, nothing new. I added two new bones, constrained this time with the foot bone and

Position the hint of both legs in front of the body to make them bend in the right direction. So, if I click on play, everything works as expected, and I can control the legs as well with its two targets. Now, to create a working emission using this IK, I'm going to select both

leg targets, click on "Add Component", and add a Nike Foot solver to it. Now, as I told you, this script is from the Unity walking robot tutorial that you can find in the description below, and I highly encourage you to go watch it if you want

to learn how this script is made. But the good thing is you will be able to find the link to download this script as well in the description. But make sure to leave a like on your way there! Anyway, now to set up this script, let's drag the

VR character IK to the Buddy. Set the terrain layer to default. By the way, if your VR rig has a capsule collider, make sure to set it to a different layer and to not select it right here. But now I will only select the right foot and drag

the left foot into the "other foot" variable, and then do the same again but for the other foot. And now, if I click on play, as you can see, if I select the VR character IK and drag it down or up, the feet stay on the ground and the knees are bending,

which means that it is working. But now, the most important thing: if I move the character forward, as you can see, it moves with a walking cycle! That's so cool! Of course, it is not perfect by any means, but I think it already gives a pretty decent result. Now, the only problem is that the

Feeds are rotated, but we can fix that. If we go to the foot rotation offset, and in my case, I found that a value of -120, 180 would work. There you go! Now, that's in play mode, of course. So let's leave play mode; we write these values to

keep them this way. And there you go! Now, at this point, we can control both arms and legs. What's missing is obviously the head, and luckily, this one is the easiest. Okay, so for the add IK, I'm going to add another constraint called Head IK.

We can add a new component called Multi-Parent Constraint. And for the constraint object, we need to go to the character rig, go under neck, and drag there the head bone. Then, for the source, let's create an empty child of the Head IK called Head Target. We can now go back

to the constraint and drag the Head Target into the source object. There you go! At this point, you should know the next step, which is to set the Head Target position on the rig. So let's first select the Head Target, then the head bones, go to Animation Rigging package,

Align Transform. Beautiful! And there it is! If I click on play, as you can see, it works. When I move and rotate the Head Target, the IK follows as well. That's awesome! And we can now control all body parts. So what's left is to make them

follow the controller and the VR headset or VR rig. Okay, so in my latest tutorial series on how to make a VR body, I made a script to make the three targets follow the VR controller and the VR headset. So, to save me some time, I already added the

The script for this project, which you can find in the description below, is not that complicated. In this latest update, I'll code the map function for the three IK targets to make them follow the corresponding VR rig positions.  This will also move the root character to follow the VR headset's movement. Now, let's go back to Unity.

To set up the IK targets for the head, let's drag the head target. For the left hand, the left hand target; and for the right hand, the right hand target.  Finally, we're missing not the IK targets, but the VR targets, which are on

our VR rig.  However, instead of directly dragging them here, I'll create some empty game objects as children to help calibrate the body later. So let's select the main camera, the left hand, and the right hand; right-click, create empty. We can call the

first one "Head VR Target," then "Left Hand VR Target," and then "Right Hand VR Target." Then we can drag them into the corresponding settings on the IK Follow VR Rig component. Beautiful! Now let's have a look at the result by clicking play.

As you can see, the head is following our feet, which is kind of weird. But if we go to the IK Target Follow Rig, we can change the head position to -0.54 on the Y-axis to fix this. Next, as you can see, if I move the right hand and the left hand, it seems to work.

As you can see, if I move the right and left hands, it seems to work.

But we have the end of the avatar that are offset from the position of our hand in real life, that are represented by the blue hand. Now, in my case, I found that for the left hand, a value of -0.046, -0.032, and -0.112 would work with a rotation of 0, 90, 98.5. So, before continuing, let's copy this component, leave play mode, paste it back, and don't forget also to go to the VR character rig to set back the position offset on the y-axis to -0.50.

Finally, let's click on play once again, and the lighting is to set up the right hand. But luckily, the right hand should throw something similar as for the left hand, so let's paste the same component that we copied before and write +0.046 instead of -0.046, and instead of 90 degrees, add 180 degrees. Oh, and it seems that we need also to add a minus value on the z-axis here for the rotation, so let's write -98 here.

And there you go! Now the position seems to match. We can copy the component once again, leave play mode, and paste it back. Of course, we can do the same, but for the hand. Right now, in my case, I found that a value of 0, -0.08, and -0.006 works great.

And now there you go! If we click on play one last time, as you can see, the position of the avatar is correctly adjusted and seems to follow our body at the good position. That's awesome! But the last thing missing is that, as you can see, the ends...

are not animated like, or blue hands, so let's find out how we can fix this. Okay, so let's leave play mode to add animation to the character hand. I prepared before recording this video a special animator called the VR rig animator, and that I have here in my

animation folder on this project. So if I double-click on it, as you can see, this animator has two layers, one for each hand, and here four parameters to control the different animations. And if I just show you one of the layers, the left hand for example, it is composed of one blend tree

that will use two of the four parameters to select the corresponding animation that you can see updated from these parameters on this little preview on the right. And by the way, to make sure that the right hand does not overwrite all the animation of the left hand, I added an

animation mask to each layer. Anyway, you will be able to download this animator and the corresponding animations as well in the description below. But now let's go back to the scene. So in the VR character icon, for the animator, let's set the controller to VR rig animator.

Perfect. So at this point, the last thing left is to update the value of the animator based on the controller input, and for this I have a very simple script that I made previously, called 'Animate on Input'. If I open this script, as you can see, it is very simple. I browse a list of

inputs and set the corresponding animator value. Now, anyway, back to the Unity editor, let's add four elements. The first one will be 'Right Pinch', so make sure you type the name correctly, and we need to use a reference and link it to the right hand activate value.

There you go. Now we need to do the same, but for the right end, with the right select value. And now let's finalize everything by doing the exact same thing, but for the left end, with the left-hand action. Oh, and something that I almost forgot is that you need, of course, to

reference the animator parameter that you have here. So let's drag the animator from the VR character IK to the animator of this animate-on-input. And just like this, everything should be ready. Let's now click on play one last time, I promise, and there you go, guys!

Congratulations if you managed to reach this point! It means that you succeeded in making the full VR body avatar with animation, and I mean, the result is really, really cool. Of course, not perfect; you can, for example, improve the arm pin position or make a better walking cycle

with the IK, or even make the forearm twist when we rotate the hand. But I think it is already cool like this. Anyway, thank you for watching, and a big shout-out to my new Patreon supporters that will appear on the screen right now. So if

you, like them, want to support my work and access the source code with exclusive content, you can join us on Patreon with the link you will find in the description below. Thank you for watching and see you soon. Bye! All right, thank you.

Complete VR Body Setup - Arms and Legs IK with Hand Animation

Valem Tutorials

이전 4부작 시리즈를 기반으로 하는 Unity의 새로운 VR 튜토리얼 시리즈에 대한 개요입니다.

소스 코드 및 독점 콘텐츠에 대한 Patreon 지원에 대한 언급.

MRTK(혼합 현실 툴킷)를 사용하여 간단한 Unity 프로젝트 내에서 프로젝트를 설정합니다.

3D 캐릭터 모델의 필요성, Mixamo 다운로드를 제안합니다.

캐릭터 모델을 Unity 프로젝트로 임포트하고 머티리얼과 애니메이션 유형을 설정합니다.

순진한 접근 방식과 그 한계에 대해 설명합니다.

패키지 관리자를 통해 애니메이션 리깅 패키지를 설치합니다.

본 렌더러를 설정하고 IK 릭을 생성합니다.

컨스트레인트를 추가하고 오른팔에 두 개의 뼈대 IK를 설정합니다.

본 자동 채우기 및 팔 IK의 타깃 및 위치 지정 힌트.

왼쪽 팔에 대해 팔 IK 설정을 반복합니다.

다리 및 걷기 애니메이션용 IK 구현하기

다리 제어를 위한 두 가지 방법, 즉 애니메이션 기반과 IK 기반에 대해 설명합니다.

IK 기반 방법을 선택하고 Unity 튜토리얼의 스크립트를 사용합니다.

양쪽 다리에 두 개의 뼈대 IK 컨스트레인트를 설정합니다.

걷기 애니메이션에 나이키 풋 솔버를 추가합니다.

나이키 풋 솔버 파라미터를 설정하고 걷기 애니메이션을 관찰합니다.

발 회전 오프셋을 조정하여 애니메이션을 개선합니다.

헤드 IK에 대한 멀티-부모 컨스트레인트 설정하기.

헤드 타깃을 생성하고 헤드 본에 정렬합니다.

스크립트를 사용하여 IK 타깃을 VR 컨트롤러와 헤드셋 위치에 연결합니다.

VR 타깃을 위한 빈 게임 오브젝트를 생성하여 보정을 지원합니다.

정확한 트래킹을 위해 헤드 위치 및 핸드 오프셋을 조정합니다.

손의 위치와 회전을 미세 조정하여 정밀하게 정렬할 수 있습니다.

손 애니메이션 부족 문제 해결.

블렌드 트리 및 애니메이션 마스크와 함께 사전 제작된 애니메이터를 사용합니다.

애니메이터 컨트롤러를 설정하고 컨트롤러 입력에 따라 애니메이터 값을 업데이트합니다.

간단한 스크립트('Animate on Input')를 사용하여 컨트롤러 입력을 애니메이션에 연결합니다.

스크립트 파라미터를 애니메이터 파라미터 및 컨트롤러 입력 값에 연결합니다.

성과 요약 및 추가 개선을 위한 제안.

Patreon 지원을 위한 행동 유도 문안.