Shaking tools

[KaxelOleg]

Run a clean project, turn on the client and start turning in different directions and looking at the weapon (pistol, rifle, bow), they will shake, and if you run the game as a server, there will be no shaking. Is this a bug?

[dyanikoglu]

Can you give more clean steps to reproduce this? What do you mean by "turn on the client"?

[dyanikoglu]

Also please follow the issue template while opening issues.

[KaxelOleg]

Also please follow the issue template while opening issues.

Sorry I didn't follow the template. You just need to start a clean project with any launch in client mode, you can standalone or editor.

[dyanikoglu]

Ok, will try to replicate the issue and let you know about results. Are you on 4.26.2?

[KaxelOleg]

Ok, will try to replicate the issue and let you know about results. Are you on 4.26.2?

Yes.

[davchezt]

i have facing this issue long time ago till now, i found that jitter come from turn in place, when i disable character rotation the jitter are gone

[troelsnygaard]

Hi, I also experienced this one. I'll try to fill out the bug report template below:

Description:
When not moving and aiming, the character will stutter (angular) for the other clients when playing the 'turn in place' animation. The owner won't see it.

Steps to reproduce the behavior:

1. Go to play mode with 2 clients. (Maybe you have to turn on network emulation).
2. Enter first person for character 1.
3. Set overlay state to Rifle on character 1 to see the problem more clearly.
4. With character 1 - Slowly rotate till you hit the angle where the turn in place animation plays.
5. On the other client's view, notice how the character and especially the rifle stutters.

Expected behavior
No stutter should occur when playing the turn in place animation.

Screenshots and Videos
Recording of the bug below. Also attached to the post. Especially at the last turn it's very obvious.
https://www.dropbox.com/s/rvyg2ogeak5u1k5/StutterWhenRotateAnimating.mp4?dl=0

Additional context
It only seems happens during the turn in place animation. It doesn't seem to happen when the character is moving (as the turn in place animation doesn't play). This is 4.26.

StutterWhenRotateAnimating.mp4

[KaxelOleg]

Hi, I also experienced this one. I'll try to fill out the bug report template below:

Description:
When not moving and aiming, the character will stutter (angular) for the other clients when playing the 'turn in place' animation. The owner won't see it.

Steps to reproduce the behavior:

1. Go to play mode with 2 clients. (Maybe you have to turn on network emulation).
2. Enter first person for character 1.
3. Set overlay state to Rifle on character 1 to see the problem more clearly.
4. With character 1 - Slowly rotate till you hit the angle where the turn in place animation plays.
5. On the other client's view, notice how the character and especially the rifle stutters.

Expected behavior
No stutter should occur when playing the turn in place animation.

Screenshots and Videos
Recording of the bug below. Also attached to the post. Especially at the last turn it's very obvious.
https://www.dropbox.com/s/rvyg2ogeak5u1k5/StutterWhenRotateAnimating.mp4?dl=0

Additional context
It only seems happens during the turn in place animation. It doesn't seem to happen when the character is moving (as the turn in place animation doesn't play). This is 4.26.

StutterWhenRotateAnimating.mp4

Try not to aim, then stuttering will be visible for both clients.

[KaxelOleg]

And there is also such a bug, when the character turned around and only another client sees it, and for the first there was no turn and maybe vice versa. This mainly happens when you try to rotate a small angle and the rotation animation fires, but for someone it is not visible.

[troelsnygaard]

And there is also such a bug, when the character turned around and only another client sees it, and for the first there was no turn and maybe vice versa. This mainly happens when you try to rotate a small angle and the rotation animation fires, but for someone it is not visible.

I did also notice that, but that went away when going into 1st person view. However, I'm not sure the 2 issues are connected. So that should probably be created as a separate Issue with a proper description and screen recording.

[KaxelOleg]

And there is also such a bug, when the character turned around and only another client sees it, and for the first there was no turn and maybe vice versa. This mainly happens when you try to rotate a small angle and the rotation animation fires, but for someone it is not visible.

I did also notice that, but that went away when going into 1st person view. However, I'm not sure the 2 issues are connected. So that should probably be created as a separate Issue with a proper description and screen recording.

Yes you are right, I just decided to write it here, thinking that this way more attention of Doga will be drawn into the topic.

[arukanoido]

https://discord.com/channels/671128082110742561/762949595571027969/878452652537704510
https://discord.com/channels/671128082110742561/762949595571027969/882452973832241182

[dyanikoglu]

I will try to include this fix in next (and probably final) release. Thanks for your help 👍🏻

[dyanikoglu]

After reviewing mentioned discord messages, I've found out some important parts for the fix is not enclosed in those messages, thus I'm not able to implement that fix for now. If more detailed information with code snippets is shared, I'll include them within next release.

[KaxelOleg]

After reviewing mentioned discord messages, I've found out some important parts for the fix is not enclosed in those messages, thus I'm not able to implement that fix for now. If more detailed information with code snippets is shared, I'll include them within next release.

I'm not good at this, maybe the guy who gave the links to the discord of the message can help you.

[ameaninglessname]

I found a simple "solution" to make it not shaking--- interplate AimingValues.SpineRotation.Yaw on simulated proxy

if (Character->GetLocalRole() != ROLE_SimulatedProxy)
{
    AimingValues.SpineRotation.Yaw = AimingValues.AimingAngle.X / 4.0f;
}
else
{
    AimingValues.SpineRotation.Yaw = FMath::FInterpTo(AimingValues.SpineRotation.Yaw,
                                                        AimingValues.AimingAngle.X / 4.0f,
                                                        DeltaSeconds, Config.SpineRotationYawInterpSpeed);
}


UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "ALS|Main Configuration")
float SpineRotationYawInterpSpeed = 1.0f;

but it cause a problem : aming rotation is laggy on slimulated proxy(because it's lerpping).

I am trying hard to find to root cause...

And I found a difference between autonomous proxy and simulated proxy when it comes to aiming rotation.

For autonomous proxy:
Always aiming the control rotation, no matter how the "Turn in place montage" plays. (It will apply some rotation amount to character)

For simulated proxy:
It's like it will first rotate the "rotation amount", then aiming back to the control rotation when turn in place happens.

Guys, any ideas about this?

[ameaninglessname]

Last weekend i tried to tackle this issue, but with no luck🥲.

If anyone interested, cherry-pick these debugging commit in my fork to keep going.