Root Motion does not work on spawned actor

Development Programming & Scripting C++
1

Hi,

I have a weird issue. I have created a blueprint class inherited from A Character and this char moves using root motion. If I put this blueprint into level manually it works properly but if I spawn an instance of this blueprint from code using GetWorld()->SpawnActor<> root motion doesn’t work. Walk animation is playing but character does not move.

Any idea??

thanks

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2

I have the very same issue you got, have you solved?

3

Did you attach the actor after you spawned in? You have to attach or it will just sit at the x,y,z position you spawned in.

MeleeWeapon = GetWorld()->SpawnActor<AWardSword>(BPMeleeWeapon, FVector(), FRotator());

like this:
MeleeWeapon->AttachToActor(this, FAttachmentTransformRules::KeepRelativeTransform, “RightHandSocket”);

or if no socket:
MeleeWeapon->AttachToActor(this, FAttachmentTransformRules::KeepRelativeTransform);

https://docs.unrealengine.com/en-US/…tor/index.html

4

Have you tried UAnimInstance::SetRootMotionMode?

5

Hey I just came across this and was having a similar issue kind of… Trying to spawn HUD widget to a root motion based character… Instead of using “EventBeginPlay” I used The :“event Tick” event with a sequence node off of it and got the widget to display properly without it messing up my character movement…Now i just cannot seem to get my weapon to spawn to my character… hopefully my Images help someone… took me like 5 hours to figure it out accidentally lol.

6

U can solve this problem by Use SetMovementMode after spawning ur actor and u can set any mode except None. I solve the same problem by using this way. I guess the reason is that what u spawned has been set the None Movement Mode by default. The actors in level has been set the Walking Movement Mode by default.

2 Likes
8

Worked like a charm