Unreal Locomotion Blendspace with Rootmotion - Part 1

hello everyone so in this miniseries I'm going to cover how to implement character moment using character locomotion using root motion enabled animations so all these animations you see here have the root motion in avert it can run and walk and the movement is driven using the road motion not with more want input we usually do in the character so also if I press s now character turns in place like this and if I press D character turns in place like that so before I start working back character turns and if I press s W character turns back and start moving so yeah everything is based on fruit motion enabled animations and that's what I'm going to work on and this miniseries so this will be I'm gonna break down this road motion based locomotion system into three parts first one I will work on the road motion in a bird locomotion blendspace and then I'm gonna show you how to implement turbo running and work in and also orient the character to the movement when we use motion enabled animations because usual method doesn't work with road motion and the next I'm gonna work on this turning animations so yeah as always this episode is sponsored by these generous patrons thank you very much for the support you guys are giving me right so this is the current character I have and there as you can see the moment is basic just like what you get from the default character as you can see nothing special going on here it's a very simple locomotion and if I show you the animation blueprint here it uses this re-run brain space it's a 1 didn't blend space and also these animations don't have any road motion and I have imported and a pack of animations with the road motion and if you select the route you can see the road is going with the animation so yeah this animation has all the road motion that I need for running for walking strafe running right stray everything right now I'm going to define tody blend space using this root motion enabled animations so first I need to enable Road motions for this yeah animations for free let's go to select these animations everything together like this and go to bulk edit we are property matrix and I wrote motion enable Road motion and repose would work let's see right it seems all right okay and now let's create a blend space PSB root motion locomotion right so and yeah should be the idle animation like this okay and I'll set horizontal axis to speed side no let's just call it X no side vertical axis okay and let's it minimum axis area to 0 and maximum axis value to do Oh for the side no minimum should be -2 maximum should be 2 and divisions 4 and similarly here minimum should be actually we don't have any work back kind of animation so therefore set to minimum to 0 and maximum 2 and divisions to right now these are the root motion in a bird animations idle is the same weight forward she should be here and walking should be here and then run it similarly left strafe walk and should be here they left the strip see right this trip here I just walk in here I'm sorry it should be here alright now these are the animations we have this is the Blaine space and we will come back to this turn right turn left distance later right hand let's use this blend space like this and I'll change the name of this variable speed Oh fw d stands for forward and need another variable speed side oh wait no here this is not what we need I actually we can do it like this so now we need to know whether we are we give an input so let's go to the character blueprint and now at the moment this is how the movement inputs work and I'm gonna disable it because we need to make the moment completely based on the animations withdrawal motion right now let's add interface to communicate between the animation blueprint and the character let's call it PPI character PPI character moment is that good name and get moment input it should return and float forward and sight now let's implement that in the face now here we have moment input here let's get move forward axis value and return here and move right return here okay now I just was tested without doing anything let's make the default value let me break this for now let's make the default value of forward to 1 and see what happens in the character oh it's not moving all right I have some set in regarding wrote motion where is it oh wait no no no the this no this is not correct because we need to change this a bit we should traitor let's call this not moment input we don't have anything to do with the moment input in the animation we only need the desired moment of the character so let's change the name to get get desired moment let's call it velocity and let's change this to oh wait right now let's recompile this now here we can get control or rotation and then we can let's just split this and using only wait get forward vector yes for the input rotation I'm going to use only is a component of the control rotation because even if I am looking slightly down while looking at the left that doesn't mean I'm going to move down I want to move down how we want to move left so yeah yeah and that's forward vector and then I'm gonna multiply this with the more forward input value which I can get from here so with this I can get the the direction a vector in the direction that I want to move towards the location I am looking at and similarly we can get right vector from the controller a rotation like this and by multiplying this with the right input we can get the movement that we need to move right to the contour rotation so let's by adding this together we can get the desired moment but this is not a direction vector because of this addition so we can normalize to to get the desired moment direction so actually using it as velocity would be kind of wrong but let's keep it that way for now okay let's go here and in they've been drop I'm gonna delete this part and we are going to set now get this and you get this higher velocity right now we can get the forward vector of this actor and also write vector of T after oh one more thing here if you remember I have said this to one but still if I play it doesn't move it that's because I have to set some set in here when I haven't selected anything it usually appears here but it doesn't so if I I'm not sure how to get it so if I close the animation blueprint and reopen it we have this root motion option and under that truth motion from montage only instead of that option or a Mogan oscillate forth motion from everything now the my character is moving and as you can see there is no sliding of the foot on the ground it works perfectly because the moment is actually coming from the animation right no I'll say this back to zero and here I'm gonna set this one and this one here also instead of we can calculate the forward component and side component by doing dot product with the forward vector we can get the forward component and by doing dot product with the right vector we can get the side component but here I'm not gonna directly set it like this because if I do that the characters moment will be snapped it's just do it and see right now the character is in the idle State if I press W you can see character starts walking in an instance oh wait this is wrong this doesn't look very good maybe it has something to do with the motion city left astray what if I use two animations first frame instead of the reference was yeah that's what I should have used okay similarly should I do it for all the animations let's see yeah seems alright and also to fix the snapping thing we can instead of directly setting we can lab so what we have to do is get the forward speed and love it that means linearly interpolate with an alpha of let's use point one looks like a butterfly let's do the same for this one true now it doesn't snap see and we can't move back because we don't have walk back animations right so I'm gonna stop this episode at this point and the next episode I'm gonna look into how to rotate the character towards the direction that this guy is looking at because it automatically happens when we move the character with the moment input but here since you are using root motion based animation it doesn't automatically happen even though I have enabled this orient rotation to movement thick so we have to do it through our code let's look into that later in the next episode and also after that we are going to work on how to toggle running and also how to use this turn left turn right animations when we start working astray and thanks for watching so if you like to support my work you can get the membership of the patron Club link could be in the description below and also project files of this project will be available through the patron page for downloading and yeah see you in the next episode goodbye

Channel: CodeLikeMe

Views: 109,179

Keywords: unreal root motion, ue4 root motion from everything, unreal locomotion, root motion blendspaces, ue4 root motion blendspace, unreal root motion blendspaces, unreal root motion blendspace, ue4 root motion movement, ue4 root motion walk, ue4 root motion run, unreal root motion movement, unreal root motion walk, unreal root motion run, unreal engine root motion, unreal enable root motion, unreal animation root motion, unreal mixamo root motion, ue4 root motion guide

Id: YtWbl50Jwwc

Length: 23min 51sec (1431 seconds)

Published: Fri Jul 03 2020