VR Expansion Plugin

[anonymous_user_601851e1]

However, if I run two instances in editor and join, the client is able to pick things up.

If I package it and try to use it on another computer (testing on static ip network) it doesn’t replicate in clients view

[mordentral]

@Shanowzer;643685

Well we’ve got it gripping server side but not client now. Progress!

Multicast something right?

Is the object actually replicated to the client?

[anonymous_user_601851e1]

It’s attached to our VrCharacter. Would it inherit replication from there?

[mordentral]

@Shanowzer;643692

It’s attached to our VrCharacter. Would it inherit replication from there?

The object has to be marked as always relevant or replicated, does the client even see the object?

[anonymous_user_601851e1]

@;643698

The object has to be marked as always relevant or replicated, does the client even see the object?

The object is set to always relevant and replicates.

The server is still the only one seeing it gripped

[mordentral]

@Shanowzer;643703

The object is set to always relevant and replicates.

The server is still the only one seeing it gripped

Well not much more I can tell you unless you look in the logs for error messages, because it doesn’t have that problem even in the template which is unfinished for multiplayer so you are doing something weird.

[anonymous_user_601851e1]

@;643710

Well not much more I can tell you unless you look in the logs for error messages, because it doesn’t have that problem even in the template which is unfinished for multiplayer so you are doing something weird.

Closed and re opened project… works

Bug?

[mordentral]

@Shanowzer;643712

Closed and re opened project… works

Bug?

Not likely to be with the plugin, that would be a BP problem.

[michaelwbell]

Hey !

Hope you are enjoying the holidays! I had 2 questions I was hoping to get some advice on!

Question 1 - Spawning objects in the player’s hand, already gripped
Explanation: In your Template the player has a “body” cylinder that the potion can be stored in.
I am hoping to have functionality where:
-Player puts hand ‘inside’ the body cylinder
-Player presses the grab button
-The potion is spawned at the player’s hand and the player is now gripping the potion

I was wondering the best way to implement .
Should the body cylinder be a standard actor that uses the VRGripInterface, deny gripping, but “onGrip” check to see if it is the player’s controller? If so, spawn potion and attach to player’s hand?

**Question 2 - fire event every time player grabs a ‘grippable box’. **
Explanation: In your template there is the Gun with a ‘grippable box’ that can be moved on one axis.
I want to play a sound every time the grippable box is ‘gripped’.
How would be the best way to do that?

Do I have a branch on the “On child grip” event that checks if the child was the gripabble box, if so -> play sound ?

As an extension - If there happen to be many components on an actor that can be “Child gripped”, should we set up an ‘on child grip’ with a few branches for each of the child components? Or is there a better way to do ?

Thanks for any advice. Love the plugin, it’s the best

[mordentral]

@michaelwbell;644001

Hey !

Hope you are enjoying the holidays! I had 2 questions I was hoping to get some advice on!

Question 1 - Spawning objects in the player’s hand, already gripped
Explanation: In your Template the player has a “body” cylinder that the potion can be stored in.
I am hoping to have functionality where:
-Player puts hand ‘inside’ the body cylinder
-Player presses the grab button
-The potion is spawned at the player’s hand and the player is now gripping the potion

I was wondering the best way to implement .
Should the body cylinder be a standard actor that uses the VRGripInterface, deny gripping, but “onGrip” check to see if it is the player’s controller? If so, spawn potion and attach to player’s hand?

No I would just have the trigger event branch at where it detects the object and if it is an “Inventory object” use different logic. Deny gripping totally denies attempting to grip at all and it will fail out. Making an enum of “BaseObjectTypes” and branching the trigger logic based on which base it is would likely be best. It also future proofs it for when you want to do more custom logic like climbing or special actions that don’t involve gripping.

**Question 2 - fire event every time player grabs a ‘grippable box’. **
Explanation: In your template there is the Gun with a ‘grippable box’ that can be moved on one axis.
I want to play a sound every time the grippable box is ‘gripped’.
How would be the best way to do that?

Do I have a branch on the “On child grip” event that checks if the child was the gripabble box, if so -> play sound ?

As an extension - If there happen to be many components on an actor that can be “Child gripped”, should we set up an ‘on child grip’ with a few branches for each of the child components? Or is there a better way to do ?
**
You can actually subclass the grippable component and do it “OnGrip” in that if it makes more sense to you. The Child gripped event is a convenience but things like that would likely be better done in the component itself.**

Thanks for any advice. Love the plugin, it’s the best

Replies in bold in the quote.

I have been writing down things I want to do next week all week (ended up being at work over my vacation a bit >.< and my son was sick). Should be more than free over the next few days, I want to look over multiplayer logic some more and try and streamline it.

[UE4Hobbyist]

@;643482

No, if the object is already replicated my plugin checks the array of held objects when it is updated over the network and if it finds a new grip (like if connecting in) then it sets up the grip.

Your issue with instantly spawning and calling grip is that the array of gripped items is probably sent before the actual object is sent over so the client can’t actually grip anything.

Edit I could technically add a flag and check held items for if they have been processed yet every frame but I think gripping after the replication is better (or spawning the object client side instead for things that don’t need to be server side, generally side arms and the like won’t need to be).

Is there any work around for multiplayer games that need the player to spawn with objects already held? E.g. in most multiplayer fps shooters the player respawns with a gun held.

[maki-san]

Do you know what error is? Should I be concerned?

[mordentral]

@UE4Hobbyist;644615

Is there any work around for multiplayer games that need the player to spawn with objects already held? E.g. in most multiplayer fps shooters the player respawns with a gun held.

I mean you can just make sure the item is replicated over first, the main issue is that currently gripping is server authoritative to regulate actions. Calling the grip on client side adds to the currently gripped array which is replicated down from the server.

I have some ideas of improvements to make on my todo list, maybe i’ll add a secondary gripped array that doesn’t replicate so you can run some logic fully locally. The reason the main array is replicated by the server is to prevent multiple players trying to grip the same thing at the same time and locally picking it up when someone else holds it.

Hmm, in fact i’ll probably just do that, add a secondary grip array that only acts locally, could just merge them before processing then. Then you could spawn props locally and grip them in a multiplayer enviroment.

[mordentral]

@maki-san;644634

Do you know what error is? Should I be concerned?

Yeah thats an editor issue, I don’t remember what causes it, you’ll want to check answerhub.

[UE4Hobbyist]

@;644786

I mean you can just make sure the item is replicated over first, the main issue is that currently gripping is server authoritative to regulate actions. Calling the grip on client side adds to the currently gripped array which is replicated down from the server.

I have some ideas of improvements to make on my todo list, maybe i’ll add a secondary gripped array that doesn’t replicate so you can run some logic fully locally. The reason the main array is replicated by the server is to prevent multiple players trying to grip the same thing at the same time and locally picking it up when someone else holds it.

Hmm, in fact i’ll probably just do that, add a secondary grip array that only acts locally, could just merge them before processing then. Then you could spawn props locally and grip them in a multiplayer enviroment.

A mixed aproach by allowing local grabbing sounds great. By using a rep notify actor variable each client can perform the grab locally when that actor finally gets replicated.

[mordentral]

@UE4Hobbyist;644800

A mixed aproach by allowing local grabbing sounds great. By using a rep notify actor variable each client can perform the grab locally when that actor finally gets replicated.

I’ll start working on that tomorrow

[lenne0815]

Hey Mordreal, first of all many many thanks for Plugin !

I unfortunately have a hard time compiling it though, no matter what i try i always end up getting these errors:

1>C:\Users est1\Documents\Unreal Projects\MyProject\Plugins\VRExpansionPlugin\Source\VRExpansionPlugin\Public\SimpleChar/VRSimpleCharacter.h(68): error C2143: Syntaxfehler: Es fehlt “;” vor “"
1>C:\Users est1\Documents\Unreal Projects\MyProject\Plugins\VRExpansionPlugin\Source\VRExpansionPlugin\Public\SimpleChar/VRSimpleCharacter.h(68): error C4430: Fehlender Typspezifizierer - int wird angenommen. Hinweis: “default-int” wird von C++ nicht unterstützt.
1>C:\Users est1\Documents\Unreal Projects\MyProject\Plugins\VRExpansionPlugin\Source\VRExpansionPlugin\Public\SimpleChar/VRSimpleCharacter.h(68): error C2238: Unerwartete(s) Token vor “;”
1>C:\Users est1\Documents\Unreal Projects\MyProject\Plugins\VRExpansionPlugin\Source\VRExpansionPlugin\Public\SimpleChar/VRSimpleCharacter.h(68): error C2143: Syntaxfehler: Es fehlt “;” vor "”
1>C:\Users est1\Documents\Unreal Projects\MyProject\Plugins\VRExpansionPlugin\Source\VRExpansionPlugin\Public\SimpleChar/VRSimpleCharacter.h(68): error C4430: Fehlender Typspezifizierer - int wird angenommen. Hinweis: “default-int” wird von C++ nicht unterstützt.
1>C:\Users est1\Documents\Unreal Projects\MyProject\Plugins\VRExpansionPlugin\Source\VRExpansionPlugin\Public\SimpleChar/VRSimpleCharacter.h(68): error C2238: Unerwartete(s) Token vor “;”
1>ERROR : UBT error : Failed to produce item: C:\Users est1\Documents\Unreal Projects\MyProject\Binaries\Win64\UE4Editor-MyProject-2231.dll

It might be something really simple but i just cant figure it out, im trying for 3 days now and just cant find a solution

[MagicBots]

Hi, I noticed that the teleport function only seems to be working from the listen server machine, and not from client only machines.
On client only I’m always teleported to the origin.

Just checking if is expected behavior for the current state of the template before I try to fix it.
( I’m working on a modified copy of the template from 11-30-2016 )

Update: Fixed. was something broken only in my copy of the template. Issue due to an insufficient navmesh.

[mordentral]

@alltrueist;645005

Hi, I noticed that the teleport function only seems to be working from the listen server machine, and not from client only machines.
On client only I’m always teleported to the origin.

Just checking if is expected behavior for the current state of the template before I try to fix it.
( I’m working on a modified copy of the template from 11-30-2016 )

I tested as client in a listen server and teleport worked fine, however I did redo some of the teleport stuff since then I think.

@lenne0815;644908

Hey Mordreal, first of all many many thanks for Plugin !

I unfortunately have a hard time compiling it though, no matter what i try i always end up getting these errors:

snip

It might be something really simple but i just cant figure it out, im trying for 3 days now and just cant find a solution

Hmm your project isn’t picking up the replicated camera as a valid type.

I’ll add
include “ReplicatedVRCameraComponent.h”

after
include “ParentRelativeAttachmentComponent.h”

In the header to ensure that it compiles it but it shouldn’t be required.

[lenne0815]

Thank you very much for your reply, im really out of my depth on one, im unfortunately not even sure if it really doesnt work or if i misjudged it.

error is thrown while compiling when i go to add new / add c++ / show all / vrsimplecharacter - in that case building fails with the mentioned error. if i just add it via place it turns up and seems to be working correctly now ( it adds the camera and the sphere and i can spawn the vr preview there even though the motion controller do nothing at the moment but i suspect that might fix itself once i watched your videos )