enfusion_physics

[stone parcel]

Otherwise it is not that useful of a report atm

[grave ledge]

Works fine now that I fucking flipped the values

[stone parcel]

😅

[grave ledge]

Now it just wobbles but I assume that's just cause rn I have the raw rotor input, no PID or torque

[nimble hazel]

Does anyone know why increasing the weight of a vehicle would cause it to vibrate?

I guessed this was something to do with the suspension but increasing the strength of the suspension doesn't solve the issue

[blissful pasture]

did you make the prefab from scratch or are you just swapping the mesh of another vehicle

[blissful pasture]

how wide are vehicle wheels? theres no place to define that, only radius.

does it recognize how wide the tire mesh is? how does it work

[nimble hazel]

It's based off of the UAZ. But, I have a version with a lower weight that works perfectly fine

[blissful pasture]

if you make the prefab from one of the vehicle_base.et's it wont be buggy

swapping the mesh object rarely works how you want it to

• for vehicles

[nimble hazel]

Ah right ok, that's annoying hopefully it fixes it

[tight remnant]

nope, it doesn't recognize it. You can take a look how it works with https://community.bistudio.com/wiki/Arma_Reforger:Diag_Menu#Show_wheels diag to see how it works. In this regard Nvidia Physx library ( https://docs.nvidia.com/gameworks/content/gameworkslibrary/physx/guide/Manual/Vehicles.html#wheel-contact-beyond-raycasts ) is better than Bullet

although maybe Bullet also allows sweeper collision now - I haven't checked it in like 3 or 4 years 😅

[tight remnant]

how is it vibrating?

[nimble hazel]

When I increase the weight it starts jittering around, it stays in place but if I up the refresh rate it turns in circles. It also makes the tire screeching noise on servers. The colliders are identical to another with lower weight that has no issues

[tight remnant]

can you show a video maybe?

Do you have some slots to it?

[timber flame]

Wheels are 2D; they have no width

[tight remnant]

they are not even 2d - or, it is not a circle but rather an arrow

it is one raycast downwards - you can observe it when you for example driving over curb

[blissful pasture]

what is pacejka

[tight remnant]

Check documentation, it is described over there

[blissful pasture]

Its blank

[tight remnant]

https://community.bistudio.com/wiki/Arma_Reforger:Vehicle:_Wheeled_Simulation#Pacejka

[blissful pasture]

ah ok different page

maybe should link it in this https://community.bistudio.com/wiki/Arma_Reforger:Car_Creation/Simulation_Configuration#Pacejka

[tight remnant]

done

[blissful pasture]

now this is the stuff i was looking for, nice

[vague ether]

Btw will this ever Change for example adding Sweep ?

[tight remnant]

maybe in a4? No idea

[lyric marlin]

It would be hilarious if this fixes the chinook

[grave ledge]

Its scared

[blissful pasture]

remove all slotted items, -does it still do it?

remove\disable

[nimble hazel]

Yes once you get in

[steel rivet]

I find that this happens with center of mass issues
If you set the center of mass only using the game's rigidbody component and in the mesh/armature it tends to fix it

[nimble hazel]

Ah right i see, I have been only using the rigidbody, I will change it to the armature thank you!

[bleak spoke]

Anyone know how to fix vehicles not moving?

[tight remnant]

https://community.bistudio.com/wiki/Arma_Reforger:New_Terrain_Setup#Create_the_Terrain_Entity see infobox

[crimson terrace]

hello

how are you , i need little help , i do a hook (tow) i'm french sorry) to attache vehicle to vehicle(canon) , put i don' t know the process of that !

i do a prefab hook whith action context and a i have attach it to the canon

i want to attache another hook to a vehicule , and attache hook to hook

this hook have two bones and a sphere colider

[crimson terrace]

terrain proprieties ( select layer :terrain)

[bleak spoke]

thank you!

[errant elk]

you need scripting

[crimson terrace]

i know but i dont find a tuto for a simple use (user action ) like print hello

action contex !! verry not simplification !! 🙂 make war not enfusion !! 😉

if you kwon a tuto about mod context action tel me one ! thx a lot

ans i have another probleme physique impossible to reimplant bone in mesh with blender my model is in good config in blender bone a ssigne good and work good , in enfusion , they are transform in slot , juste one is ok !! 1 day about this !!

i dont find solution

[crimson terrace]

hello i have another question , why we can delete action in action manager ?

[errant elk]

can ? or can't ? if you can't it's probably because you made your prefab by duplicating another one that is not a "something_base.et"

[crimson terrace]

ok ok

euuu no its not duplicating

it-s new

you think i do name _bas ?

base?

no so not very important ! just with universalstoragecomponent , can we do a white list ? have made a (obus) with case ,and carry bag (my english is not very good sorry )

photo is more explicite i think ( i want white list for the obus case , and i want white liste for the (obus bag (panier))

[pale plinth]

does anyone know of a method to disable collision/fire geo on the base character permanently? I see you can set the visibility with flags, but disabling collision is something i also want to do.

[crimson terrace]

Maybe reimport the caractère with setting new colidiers

[errant elk]

I have sent you a link, where you could find help in french

[crimson terrace]

i dont find that link

lol

[grave ledge]

GetOwner().GetPhysics().SetInteractionLayer(EPhysicsLayerDefs.CharNoCollide); 

For anyone trying to find the solution

[errant elk]

It is in your private message 🙂 I'll send you again, it's a discord link for french modding community

[crimson terrace]

Ok thank you very very much

But i sorry i sont have your privat message i think you have make mistake send 🤣

[crimson terrace]

thankss

[crimson terrace]

hello mabye became the end , but why in edtior spaw it spawn with bad turret position ? any idea ? slot are 0.0.0 i have to play with colidier ... but nothing

[upbeat quest]

maybe this goes here when it comes to dealing with collision..? Anyways, this happens pretty consistently with the bayonet just falling through the map, and unsure why. I also provided a screenshot of my RigidBody setup

[crimson terrace]

Take layer présent to other

Preset

[upbeat quest]

Sorry, I'm not sure what you mean? If you mean change the layer preset, what should I change it to?

[upbeat quest]

So, from some testing, seems as if the geometries within the geometries array in RigidBody don't actually work consistently...? Using two of the same prefab, except one is using model geometry, and one using the added geometries.

The one with model geometry consistently does not fall through the map, while the one with add geometries sometimes falls through, sometimes doesn't

Unless I'm misunderstanding the point of the geometries array in the RigidBody component

[devout sedge]

are you using capsule collision? I think capsule is the "best" as in it's most consistent and strong against failure.

[upbeat quest]

I'll give it a try

I've been using the box geometry

[upbeat quest]

So far, this seems to be the case

Using both box and capsule colliders on a model, and the box falls through while the capsule catches and doesnt fall through

Why even offer the box if it just doesnt work

It's not pretty collision though, but it'll have to do until it's fixed by BI

Still not perfect though, it seems

Just gonna shelf making the bayonets work for this. Disappointing, but oh well

[devout sedge]

So in 90% of games capsule collision is used for fast collisions. Example all bullets should be capsule based. The box is for structures/walls/ parts of vehicles.

There are always two things to consider with collision shapes. And that is Costs VS Effectiveness.

[ruby shadow]

Shape of collider shouldnt mean it has physics/gravity or not

[stone parcel]

In some cases, it works better

Depends on the case

[lavish lion]

It is known, and has been improved in 1.3 or 1.4 don't remember

[upbeat quest]

Good to know, maybe I’ll revive it then

[devout sedge]

Anyone got any ideas for ways to add physical recoil to a tank firing? (Turret/chassis backwards movement)

[serene spindle]

Can’t you add a scripted event to the animation of the gunner that will pass it

Right click on the gunners animation strip in the editor and add an event then do a script that is triggered by the variable like walk sounds do etc

[zinc dirge]

I know in space core it has a recoil component you can add to your turret prefab for a impulse, as for the cannon recoil it is possible but I’m not sure how, maybe a proc anim?

[devout sedge]

i've got the cannon recoil done using anim editor. It's more the physics applied to the vehicle. If someone sits the vehicle on a stupid angle on a steep hill firing then I want them firing to flip the vehicle... Brains > Tactics
I think i'm going to have to end up abusing multi-muzzles and firing dual shells to sim this unscripted

[fiery dagger]

Yes you can. You have to script the animated event and give it an event ID then call that ID in the anim graph.

Vanilla mines work this way to activate them. Check them out for the structure!

[opal river]

is it possible to add a shockwave effect on the foliage when an explosion is near it? so a grenade going off blows away foliage for a split second, like in battlefield

[ruby shadow]

ApplyTorque doesnt work on vehicles?

[tranquil tartan]

Anyone experienced with vehicle physics? Is the vehicles rear end falling into the ground an issue somewhere within my model? or in the prefabs simulation setup? i'm at a lose trying to get this thing to work. it seems to be pivoting on the front of the vehicle. If i spawn it in higher it does flips around the front Im thinking its more a prefab question.

[ruby shadow]

It might be colliding with itself somewhere, I remember having a similar problem

If using multiple slotted entities that have physics

[zinc dirge]

My guess would be a collider issue, do you have a bottom slide collider?

[thorny osprey]

Arma core 🤣

Now is better on Arma 3 you can get Arma space program on this situation

[crystal berry]

Can anybody point me to some good resources for working with colliders in enfusion?

Also what is CCD radius?

[tight remnant]

https://docs.nvidia.com/gameworks/content/gameworkslibrary/physx/guide/Manual/AdvancedCollisionDetection.html#contact-reports-and-ccd CCD stands for continuos collision detection

[crystal berry]

Nice thank you.

[crystal berry]

Where do I set Collision on the player

I have a vehicle and put a collider on a rigid body on it. And I set the layer to vehicle. Not getting any Collision right now though

[rotund atlas]

VehicleSimple or VehicleComplex - I can't recall which, but they each give "flags" which then enable or disable layers based on the flags.

[glass tinsel]

In the PhysicsJoint documentation it says “Entities must be dynamic objects”. What makes an entity dynamic? https://community.bistudio.com/wikidata/external-data/arma-reforger/EnfusionScriptAPIPublic/interfacePhysicsJoint.html

[lavish lion]

Their RigidBody component should be dynamic, so not static or kinetic

[glass tinsel]

Thank you I found the option

[crystal berry]

Importing a four-story building interior collider been about an hour so far. Only took about 5 minutes for the external haha. Hope it finishes soon

[warm knot]

Hallo! Is there a rundown available somewhere with descriptions of how each explosive damage effect works?

e.g SCR_BlastForceDamageEffect etc etc

[thorny osprey]

https://community.bistudio.com/wikidata/external-data/arma-reforger/ArmaReforgerScriptAPIPublic/interfaceSCR__BlastForceDamageEffect.html

[warm knot]

Unfortunately there are no words here to communicate how the consequences of each damage type affects characters.

I can make some simple assumptions for a few of them, but real details would be better.

For example, blast force damage. Does it hurt players or just move them in a direction? Does it knock them out without dealing any damage? Does it turn them into a unicorn?

Mysteries and secrets

[warm knot]

I am not understanding the relationship between depth and density in projectile penetrators.

E.g I can set a projectile to have 100 depth at 2.5 density (it will break through brick), but then I test it and it will penetrate both sides of a BTR-70 hull.

[tight remnant]

https://community.bistudio.com/wiki/Arma_Reforger:Weapon_Creation/Prefab_Configuration#Bullet_Penetration_Theory

don't forget, that btr armor is quite thin - just 7mm of RHA on one side

also, don't forget about KE factor on material - bricks are using 0.8 coef, which mean its protection will be reduced by this coef

in your case, 100 depth at 2.5 density is equivalent of 31mm of RHA armor penetration

[warm knot]

I need to bookmark that community site 😂 thank you!

[frank summit]

Is it possible to make a rope with physics in Reforger? I was thinking that if you could take the rope model and apply the same "physics" as a falling weapon, it might work, but I don't know how to spawn it lol.

[crystal berry]

Make a rig of a chain of Bones should work. I'm going to try it at some point

[shadow vigil]

Pretty sure Zelik showed using physics joints a while back. How good it works in a live/dedicated server 🤷🏻

[crystal berry]

What paramaters on bullet could I change for more knockdown / blowback power?

I increased penetration density and set the proper size / mass for it.

[runic stone]

Hello, not sure if this is the right category, but I hope somebody can help me.
I want to make several street lanterns, and of course the glass part should be destructible. Is it possible to create a single glass shard mesh object for the falling glass debris and instance it in the game into many glass pieces?

[crystal berry]

Look at the window prefabs.

I'm not sure if the broken glass is a particle effect or mesh or both

[blissful pasture]

has anyone else noticed vehicle physics are slightly different now in 1.3?

i know they changed the camera a little bit, but now my cars feel way heavier

[obtuse gulch]

Working out some physics issues with a boat and wanted to see if anyone has ran into them before: Collision Issues:
Players seem to be falling through the boat's collision mesh
The boat's physics model might not be properly aligned with its visual model while moving around with the waves.
The water collision seems to be interacting incorrectly with the boat
Physics Simulation Problems:
The boat's movement seems to be causing players to get stuck in positions that trigger death
The physics simulation might be desynchronizing between server and client. I can send the log if someone is interested in learning more! Thanks.

[errant elk]

yep, in my opinion they corrected what they did wrong with vehicle physics in 1.2

[errant elk]

are players seated or on the boat

[obtuse gulch]

Walking on and around it

[errant elk]

I read something about that, if boat is a vehicle it is kinda not possible atm to have player walking on it without problem, like it is not considered as a "walking surface" especially if boat is large

[knotty moss]

Anyone know what the Ballistic Properties Formula is the website isn't displaying it? https://community.bistudio.com/wiki/Arma_Reforger:Weapon_Creation/Prefab_Configuration#Ammunition_Creation

[charred wharf]

Is this a collider problem?

[supple bluff]

Not sure, I bumped it in the #community_wiki channel so hopefully it can get fixed this upcoming week.

Here is the raw text from the source on that page

:<math>F=a/v^2*1/m</math>

where

:<math>F</math> is the '''drag force'''
:<math>a</math> is the (de)'''acceleration''' of bullet
:<math>v</math> is the '''speed''' of the bullet
:<math>m</math> is the '''mass''' of the bullet```

[knotty moss]

Perfect appreciate it

[fast crater]

looks similar to weapon collider issues.
maybe a collider inside the vehicle is interacting with another collider attached to the vehicle?
Unfortunately I've only done weapon colliders and sometimes attachments collide with main weapon

[crystal berry]

Where do I tell a prefab which of its colliders to use?

I had it earlier and I can't find it now

It had UTM C, UTM F, and one other one

in a dropdown list

Nevermind I found it was from everon life

[rustic harbor]

It uses whichever are in the model. They have different types that only exists on certain layers.

If it has a firegeo it can be shot, view is for A.I. perception. Etc.

[charred wharf]

fixed the flipping but it seems there is still some collider, which causes the floating

[hollow basin]

Not collider the tire size or some number in physics

Currently I am not near my PC and I did not give you what component exactly it is.

[cursive robin]

same issue, did you fix it>?

[charred wharf]

I fixed it by making the tire collider even smaller. It seems to be working for now.

But you should try .Age´s advice

[cursive robin]

I fixed it, turns out my terrain was not registered as "terrain"

[ruby shadow]

Which collider material will protect crew of vehicle from RPG7?

[quaint tinsel]

With the damage changes that were made in 1.2.1/1.3 Im not even sure if this is possible any more, every single explosion container on the base warhead has this by default now:

{8B0302FD53B4AC5C}Prefabs/Weapons/Core/Damage/BlastDamageEffect_NoTrace.conf

This explosion is to apparently simulate overpressure or something, but it goes through every single collider from our testing at least, because it doesnt perform any trace checks. Apparently this is intended? I'm not sure, it makes every ground vehicle very vulnerable as a result because the crew often dies in one RPG.

If you figure something out let me know, the only "solution" I have seen is that some servers mod this explosion container so it does a trace check but that would impact every projectile in the game base + modded, if they use the same base bohemia prefab.

[zinc dirge]

Make a custom material that has chemical resistance not only do explosions ignore colliders the real killer is the heat chemical spalling

[zinc dirge]

What I’ve been messing around with is increased chemical resistance on every collider besides the rear of the turret and rear engine area and top it’s quite unrealistic but it increases crew survivability by a lot, I’m 90% sure it’s the heat spalling that kills the crew

Traceless explosion mod also helps

[quaint tinsel]

wouldnt it be easier to just turn off the notrace container?

[zinc dirge]

To stop the explosion trace i think it would be, but another big factor in crew survivability is the spalling from the rpg

[quaint tinsel]

Well at that point if your vehicle has good armour you should be ok

[zinc dirge]

I think it has to be over 130mm? I forget the exact thickness the spalling dies down but it eats through pretty thick armour

[ruby shadow]

Even a material with 50 density and 9999 thickness lets an RPG through

I also tried another collider around the crew inside the vehicle but it didnt do anything

[zinc dirge]

Did you try raising the chemical pen resistance?

[ruby shadow]

I set it to 0 since it's supposedly a multiplier

[sharp gull]

Aren't RPGs chemical pen though? And if you set the chemical resistance to 0, couldn't that just make it impossible for that material to stop any parts of the rpg, if its a multiplier?

[ruby shadow]

If it's a multiplier then multiplying projectile's penetration depth by 0 means it penetrates 0 mm

But I tried 0 and 1 and it was the same so whatever

[thick parcel]

no it's other way around

the higher chem resistance, the less your chem projectile will penetrate

zero makes it have zero deceleration

more resistance means also less damage.
For example, wheels take more penetration damage from hitting tyres than hitting rims, if projectile is stopped by both.

[ruby shadow]

Why does it say it's a multiplier then

What does it multiply lol

Also is any of this cached?

[frozen bough]

Does anyone know if enfusion support vertex animation? I'm thinking for pre-baked destruction simulations

[rustic harbor]

Yes, morph targets. But, Reforger has its own destruction that should be used. No reason to "reinvent the wheel".

[frozen bough]

Any documentation on these? Sounds promising

I wanted to check if there's way to improve the building collapses. At the moment they just translate downwards to reveal a destroyed mesh underneath.

[thick parcel]

Density

irl it's more like hardness

[crimson terrace]

hello evreyone ,enfusion have joint pivot by default ? to hook cannon with car maybe

i don't think i make the good think , i have do a hook with a bone and slot the hook to cannon ,i have make a actionnable hook with trigger detect all hook in trigger and fix it , ok but no pivot joint work , i have look the mod with the truck and pivot but i think there not reel pivo juste anim base on the truck wheel , have an idea ? sorry for my english

[ancient field]

nothing that works in multiplayer, works great in singleplayer

[crimson terrace]

Yes @ancient field i think create prefab with pivot rotation, and use réplication component

Your mods is in erreur, with a enfusion upload, we can directly modifi the mod , can you give us the original file ? If i find a solution i give you the new file and you publish the new workshop project

( we cant)

You have do all the job ,but little add to be work

[crimson terrace]

be carreful at infanterie cannon are vulnerable https://www.youtube.com/shorts/cy2Q9Q8KBo0

sorry wrong post server 😭

[ruby shadow]

@proven void Sorry to ping you but I wanted to ask you if it's possible to add more gravity to a shellmovecomponent-based projectile? In current version increasing mass in movement component and rigidbody component doesn't change the trajectory of the round

[thick parcel]

afaik it all depends on air drag, since in Reforger and in previous Armas it means deceleration and is product of air friction vs mass combined

[ruby shadow]

Yeah drag slows it down, but I wanted to make it fall down faster I think I am bottlenecked by terminal velocity or something

[thick parcel]

hmmm yeah

[ruby shadow]

No way around that right? Other than making my own projectile rigidbody with big mass and triggering explosion manually from script?

I want high speed but also continuous acceleration downward, like a much higher terminal velocity if you know what I mean

I'm kinda surprised Mass doesnt help me out here, zero difference between 10 and 1000

[lavish lion]

Mass on the ProjectileMoveComponent should have an impact

[ruby shadow]

It doesnt do anything

I think it might only be used for penetration calculations? For the old system

[tight remnant]

mass for sure has impact on trajectory https://github.com/BohemiaInteractive/Arma-Reforger-Misc/blob/main/Configuration/Weapons/Weapons_Ballistic_Coefs.xlsm

if you change mass in those spreadsheets you will notice how it will affect calculations

[ruby shadow]

There is zero change in trajectory of the projectile in the game between 10 and 1000 mass

Maybe something in my bullet is wrong that makes this kind of symptom

[tight remnant]

see the difference

[ruby shadow]

This in the same version I got?

Wait so a 1000 kg shell fired at 890m/s travels further away than a 0.1000kg shell fired at the same velocity?

I would have expected it to fall down sooner

I guess I dont understand gravity

[tight remnant]

or nvm, seems it was affected by angle 🤔

[ancient field]

https://m.youtube.com/watch?v=oYEgdZ3iEKA

Heavier things do not fall faster than lighter things

[ruby shadow]

But steel is heavier than feathers

[ancient field]

https://m.youtube.com/watch?v=-fC2oke5MFg

[ruby shadow]

Maybe I can explain my point better if I say something like... I want the shell to have the same trajectory as before but get to the target faster

[ancient field]

Also heavier things tend to have a better ballistic coefficient, so if you have the same geometry then a heavier one will experience less net effect for the same amount of drag due to more inertia

[ancient field]

If they are a ballistic entity then only way would be for it to have higher initial velocity and shallower launch angle to minimize its time of flight. Or increase gravity, but not sure if thats possible with projectiles. I know it is with the world physics and vehicles respond pretty well but projectiles use their own calcs, so not sure if they respect game project setting

[ruby shadow]

Well my whole lil rant is because I cant increase gravity

[blissful pasture]

force impulse it downward at a rate

[thick parcel]

add magnet

[cerulean hound]

Created a backpack have added weight and bones to it through blender still dosent have any physics anyone know how to add physics

[ruby shadow]

I wonder if somehow launching the projectile with parent speed multiplier of 1 and parent velocity as vector with y = -500 would help

[runic pawn]

My custom weapon doesn't drop to the floor when a character is killed. Does anyone know how to fix that?

[tight remnant]

it doesn't have non UTM collider for physics

[runic pawn]

Hey, thanks for responding. I have added two UTM colliders. One Weapon with Weapon Wood material and another FireGeo with Weapon Wood material.

[runic pawn]

Never mind, I forgot to swap the new xob into the weapon prefab

it works now!

although now they just fall through the ground

[tight remnant]

non utm

[runic pawn]

Oh wait, one of the colliders needs to be something else than UTM?

[tight remnant]

https://community.bistudio.com/wiki/Arma_Reforger:Weapon_Creation/Asset_Preparation#Colliders_&_Material_Names

yes, convex for instance

[runic pawn]

aah okay, thank you!

[random oxide]

Don't know where to toss this question so im gonna put it in here, in regards to armored vehicles, is there something I can do to prevent grenades from penetrating armor and just killing infantry inside? The explosion system in reforger is so dumbed down that the explosion ignores armor lol

[ruby shadow]

Which collider shape is most efficient?

[ruby shadow]

Sphere

Thanks

[ruby shadow]

Why this no work

[ornate fable]

Did you name them with the correct prefix when exporting as fbx?

Or maybe the sphere was scaled and it wasnt applied

[ruby shadow]

Turns out sphere is unsupported by ragdoll

[ruby shadow]

Is there a collision layer that lets through vehicles/physics objects but NOT players?

[lavish lion]

I think destructible have a response index like that

[glossy lodge]

16:04:07.305 WORLD        : UpdateEntities
16:04:07.305  WORLD        : Physics simulation
16:04:07.305   PHYSICS      : Entity entity @"ENTITY:4611686018427395767" ('Vehicle','Assets/Vehicles/Wheeled/S1203/S1203_base.xob') at <-nan -nan -nan> @"{6E485048122CEEEE}Prefabs/Vehicles/Wheeled/S1203/S1203_cargo_red.et"
16:04:07.305    PHYSICS   (W): Overflow in AABB, object removed from simulation

Anyone else been getting these physics errors on dedicated servers the last 2 patches? Thought it was a mod issue at first but removed vehicle mods and now it's happening with just vanilla vehicles 😦

[clear frost]

I have it as well. Happening for helicopters, barbed wire, and the metal tank cross things (I forget the name)

Unsure of the triggers, but its out there, and its annoying.

[glossy lodge]

I believe it happens for me randomly sometimes when spawning a vehicle via script with simple logic along the lines of:

IEntity newEnt = GetGame().SpawnEntityPrefabEx(item.m_sPrefab, true, GetGame().GetWorld(), params);

Physics phys = newEnt.GetPhysics();
if (phys)
{
  phys.SetVelocity(vector.Zero);
  phys.SetAngularVelocity(vector.Zero);
}

[solemn tendon]

How would I add a collider to a prop I imported. Tried getting info from another prop but it tells me nothing after overriding it.

[glossy lodge]

WORLD        : UpdateEntities
 WORLD        : Physics simulation
  PHYSICS      : Entity entity @"ENTITY:2305843009213702983" ('StaticModelEntity','Assets/Props/Military/Fortification/CzechHedgehog_01/CzechHedgehog_01.xob') at <-nan -nan -nan>
   PHYSICS   (W): Overflow in AABB, object removed from simulation
Unhandled exception
Program: /home/container/ArmaReforgerServer
Reason: Unknown

Now it happened with something that isn't even a vehicle and I think probably vanilla placed entity?

Is there any common cause of an issue like this?

[glossy lodge]

Follow up on this issue, it seems most likely to be related to AI being spawned in physics-enabled objects or vice versa. I'm gonna start adding any entities that cause this crash to a blacklist that will prevent ambient patrols spawning within like 10m of them or something to see if that helps

[craggy oar]

Out of curiosity, what is the gravitational acceleration in ArmA Reforger?

[tight remnant]

you can see it and change in Workbench options - it is part of gproj

or was it in terrain maybe

9.81

it is set in world and those are default values

ps it is Arma Reforger, not ArmA

[ruby shadow]

Can someone good at ragdolls tell me what might be some common reasons for my ragdoll to glitch out under the floor at mach 3 when activated

[ruby shadow]

Kinda feels like it's colliding with itself with extreme force

If this is the case, how to make ragdoll colliders ignore collision between each other?

[lyric marlin]

Merge Physics: True /s

[glossy venture]

Is enfusion car sim allows vehicle suspension to move only up and down?
So, for exmaple, tatra-esque vehicles are not truly possible to sim?
https://iepieleaks.nl/wp-content/uploads/2016/02/TATRAFORCE.jpg
this is what i am talking about

[lavish lion]

I would use diag -> physics -> dump contacts to see what is colliding with what

[ruby shadow]

Thank you

[ruby shadow]

One other issue is that it seems like the weight is kinda lost lol

Of the vertices etc

Is there a way to just delete the ragdoll or something? I want to just blow up the character with particles on death 😦

[ancient field]

It’s only simulated up and down. You could animate it to have the inward rotation but it would have no effect on simulation

[glossy venture]

understood, thanks, so ill hve to fake somehow in the mod i am making. Cars with very little to no vertical movemement are imposible to implement properly then

since engine jsut breaks down when you try to drive such car, and starts kicking it into the air even on airstrip

[ruby shadow]

Fast driving also impossible in reforger because server will teleport you randomly upside down or into a tree

[timber flame]

Often you have to ingore where your screen says the vehicle is, just give inputs based where you know it is. e.g. when screen says upside down, you know on server it's still driving along fine. Just hope you don't fall out the vehicle and under the map into the abyss while it's teleporting you around.

[peak pike]

There's something wrong with the clientside replication of vehicle physics.
it shouldn't desync like this, why are teh calculations wrong?
It's consistantly wrong calculation on the client driving the vehicle

[timber flame]

There was a blog post about all the problems with server authoritative vehicles. I thought BI would solve those problems, but instead they left it broken/unfinished 😟

[peak pike]

Maybe in arma reforger 2?

[ruby shadow]

They (client/server) disagree because it's not deterministic

Someone put a random number somewhere

And it makes us teleport into a tree

[peak pike]

awww shucks

I thouyght it was artificial force added from server to client correction

[ruby shadow]

Actually I have no proof so I might be talking out of my butt

[lavish lion]

It was already written in the blog, that collision are currently not deterministic, so as soon as you have collision, it rewind, but rewinding doesn't take into account collision this is why I soon as you rewind you have many of them

[midnight oyster]

Has anyone here successfully implemented physics on a player in a dedicated server? I have a mod that works in workbench/localhost that simulates nitrogen buildup in the blood during diving, in order to keep the player underwater I am applying a -0.1 vector velocity to make them neutrally buoyant. It works everywhere, until I put it on dedicated. What does my replication need to look like in order to alter the physics of a player on a dedicated server?

[ruby shadow]

Isnt the player in charge of their own position?

Thats how hackermans teleport everywhere

[midnight oyster]

That's what I was trying to figure out. It sounds like I need to do all of the physics client side then

[peak pike]

Yes client is authority of the player character (setOrigin must run on client), not sure about desync...
Like if the velocity should be increased on other clients to make it look smooth?

Same question about cars kind of.
clientA drives car, clientB looking from the side of the road,
trigger script to increase car velocity for 1 second,
if I want the replication to look smooth, I should increase the velocity on all clients & server...
Right?
Physics are serverside, but for it to not desync they all need to run the script...

Same for character velocity under water? 🧐

[midnight oyster]

Yeah, sounds like I need to do all of the calculations and adjustments on the client, broadcast the updated values to the server, and allow it to replicate them to the other clients.

[ruby shadow]

Dont think you need to broadcast the changes, just worry about setting the position

I assume your velocity is not big enough for it to matter?

[midnight oyster]

No, its literally -0.1 of downward velocity to keep the player from floating upwards in the water

[midnight oyster]

When I try to enact a physics change on the player, I get "Failed to find physics body in children of: SCR_ChimeraCharacter". The ScriptComponent is attached to my BaseCharacter.et prefab. Do I need to get like, hyper granular with the scripting here, or am I doing something wrong? I can link the script if need be.

As previously stated though, this works on localhost/single player. It only messes up on dedicated servers.

[midnight oyster]

Disregard, I got it lol.

[cedar pawn]

Hey! I placed down some assets instead of prefabs and they dont have collision enabled, how do I go about re-enabling or setting them to be solid objects?

[rustic harbor]

Don't place assets, place prefabs instead.

[cedar pawn]

Thanks, I've already got it handled now and added rigid components to their modifiers so they're all solid objects now lol

[rustic harbor]

Cool, but you should be adding the actual prefabs to the world.

[cedar pawn]

I'm not going through and replacing hundreds of assets by hand and realigning them again to do that. They are solid, they have physics, they work

What will the change be if I do that when they are almost a perfect copy besides where the file patching is to

Pathing*

[rustic harbor]

The change will be that you have actual fully functional prefabs placed on your map instead of static, rigid objects that can't even be destroyed.

There's a reason prefabs exist

Most prefabs have more than just the rigid body component.

[cedar pawn]

Yes

I guess I should explain

[rustic harbor]

No need

[cedar pawn]

Yes need

[rustic harbor]

No

[cedar pawn]

Cause it seems like you don't understand component modifiers

[rustic harbor]

Hahahahahah

I don't

I've been doing this since the day it came out

[cedar pawn]

Ok then you would know the rigid modifier makes them destructible and solid and interactable

[rustic harbor]

It has absolutely nothing to do with destruction

[cedar pawn]

Anyways all that needed the modifier was some castle walls and trees

So it's cool

[rustic harbor]

Util someone drives into one

[cedar pawn]

And I'm gonna specifically not go replace them now to spite you and your haughty attitude

[rustic harbor]

It falls through the map

[cedar pawn]

Interesting

[rustic harbor]

Then you get a game crash for having ah entity outside the world bounds

[cedar pawn]

Mmmm

[rustic harbor]

An*

[sage lodge]

guys please help me

i created map " well i somehow deleted it " but anyways i have no idea how to give world a physics if i drop a car and try to drive it its not working wheels are just rotating in the air but heli's works fine

[iron mountain]

Any chance for us getting a Physics. command for setting center of mass for embedded physics?

[crystal berry]

Pretty sure there already is. There's a checkbox that is checked by default that says Auto Center of mass

[iron mountain]

No, i need specifically scripting command. For when you create/destroy physics. You can set center of mass for custom collider objects but not for embedded ones. There is a parameter in rigid body component to set up/shift center of mass, but it is ignored if you destroy/create physics with scripts.

[dire saffron]

same problem here except i didn't "delete" anything

[dire saffron]

make sure in terrain that in layers in object properties your vehicles and terrain are both checkmarked

[sage lodge]

i love you

[grave ledge]

Can anyone explain why physics handles completely differently from fullscreen and windowed

Same code and everything but it handles completely differently from fullscreen and windowed

This seems to happen on actual maps, for example this does not happen on the MPTest world but it happens everytime on Arland

[grave ledge]

The severity of the effect on thrust is changed on all maps, like MPTest has none, Arland has some and Eden also has some

[iron mountain]

Maybe you run some of your code OnFrame which might result in it beind dependend on fps, but that's a wild guess.

If there is dependency like bigger map = bigger effect that would hint fps dependency, even windowed/fullscreen is different

[grave ledge]

Only thing thats calculated frame wise in my controller is the inputs for the drone, so even if throttle is at 0 this shouldn't be happening

All of the force and torque calculations are done in EOnSimulate

[iron mountain]

I have somewhat similar effect in my mod for rotating objects with the scrollwheel, in mptest it has much more effect than on everon

[grave ledge]

This is quiet annoying as my drone that needs to be stabalized has different physical properties on each map

[iron mountain]

maybe controls have to be moved to fixedframe, but that's me guessing, i haven't got to that part yet, no idea how to do that properly

[grave ledge]

My theory is that physics is applied per frame, so at higher/lower frame rates the force applied changes

[iron mountain]

Isn't it applied on OnSimulate?

[grave ledge]

Yep which really confuses me

Only thing I can maybe think of is moving all the math to fixed frame and then applying the math in EOnSimulate

Eh that still wouldn't work as I think the issue is the higher the framerate the more EOnSimulate runs, causing more thrust input.

[grave ledge]

The solution was to use time slice in my calculations for force and instead of doing ApplyForce i did ApplyImpulse

[sonic schooner]

was anything ever done by way of matching player location to a moving vehicle? I still need a solution for players traversing my ship while its moving

[grave ledge]

Applying Torque at under 30FPS seems to result in this happening to players
https://youtu.be/qlYy9aN5FCg

[grave ledge]

So my fix was when apply torque to apply it off of a time scale so it was

float timeScale = timeSlice * 30;
torque = torque * timeScale;

In a nutshell

[ruby shadow]

It will still probably happen check with 10 fps

I have the same problem with one of my things and I think I will just apply smaller torque depending on fps

because there is less time for damping I assume so it doesnt lose that velocity fast enough

just didnt have time to do it yet

[grave ledge]

Is there a way to pull the current FPS?

Theoretically instead of just have timeSlice multiplied by a constant 30 couldn't it just be the current framerate

[ruby shadow]

System.GetFPS or something

In my case there is a problemw with damping, if I want to apply the same force relative to time then when there is low fps I guess I must also apply damping which factors in fps, where lower fps means more damping

[grave ledge]

This works really well for me

vector worldAngVel = physics.GetAngularVelocity();
localAngVel[0] = vector.Dot(worldAngVel, owner.GetTransformAxis(0));
localAngVel[1] = vector.Dot(worldAngVel, owner.GetTransformAxis(1));
localAngVel[2] = vector.Dot(worldAngVel, owner.GetTransformAxis(2));

inputTorque[0] = -m_iPitch;
inputTorque[1] = m_iYaw;
inputTorque[2] = m_iRoll;

float timeScale = timeSlice * 30;
vector dampingTorque = -m_vLocalAngVel * 4.0;
vector controlTorque = ((m_vInputTorque * 6.0) + dampingTorque) * timeScale;

vector worldTorque = (owner.GetTransformAxis(0) * controlTorque[0]) + (owner.GetTransformAxis(1) * controlTorque[1]) + (owner.GetTransformAxis(2) * controlTorque[2]);

physics.ApplyTorque(worldTorque);

[ruby shadow]

isnt in your case control torque smaller with less fps? or is that intended

[grave ledge]

Thats what I thought but it seems to be equal

[ruby shadow]

I imagine it's because it's applied more often

alright ima implement something similar

[grave ledge]

Sorry, my dumbass actually just forgot to recompile my scripts, System.GetFPS() in fact does cause it to go crazy

doing float timeScale = timeSlice * 30; provides a stable torque at low FPS

[ruby shadow]

aight

[grave ledge]

And it actually seems to scale with higher fps properly as well

[ruby shadow]

I think I did it this way in another project tbh

[lavish lion]

You should just apply during physics ticks so it will be constant 60 fps

Physics is simulated at 60fps, for sure if you apply it during on frame and the frame is lower than 60 fps you will have issues

[iron mountain]

During physics means OnSimulate?

[lavish lion]

Yes

[grave ledge]

I am doing that and it is causing this

[ruby shadow]

is it not possible to disable collision between two objects from script? do I have to use slot manager if I want to disable physics interaction?

[inland goblet]

Idk if this would help you but i use this script to temporarly disable collision between a player and a vehicle(mostly helicopters) on ejection.

Physics phys = vehicle.GetPhysics();
        
        if(!phys)
{
  return;
}
        phys.SetInteractionLayer(EPhysicsLayerDefs.FireGeometry); 

Best part is you can also run it on the client side only and disable the collision between two entities while still keeping them for others players and also bullets, etc.

[lavish lion]

InteractionBlockSystem

[grave ledge]

I have a client authored vehicle and other clients just get the updated transform of the vehicle, however it seems like the actual geometry isnt getting updated for the other clients, as the vehicle can bump into the player controlling it but not other players? How do I fix this?

Nvm I believe it was cause I used SetActive(false) instead of EnableGravity on the clients not in charge of controlling the drone

[willow stag]

how can i increase a vehicles speed and acceleration? I tried looking at the prefab but nothing stands out about those 2

[peak pike]

You want to edit the VehicleWheeledSimulation

There are simulated engines and gearbox and stuff.
You need to increase the power of the engine and gearbxo to make the car speed better

[willow stag]

Thank you

[ruby shadow]

Hehehe you're gonna love that

[timber flame]

Replace physics engine with rapier please https://rapier.rs/

Cross-platform determinism... could have smooth driving

[ruby shadow]

or u know

just delete the calls to random()

[timber flame]

Found a better solution not written in rust https://github.com/jrouwe/JoltPhysics?tab=readme-ov-file Jolt used in Horizion Forbidden West, Death Stranding 2. Also cross-platform deterministic and comes with a tracked vehicle simulation. Maybe a a lot of work to change physics library in the engine, but less work than trying to work around bullet's limitations.

[lavish lion]

There is an engine physics programmer position openm, just saying 😉

[timber flame]

maybe 6+ months before I have right to work in Czech Replubic. When I do for sure I am applying to BI 🙂

in the mean time good luck with recruitment; always many fun looking jobs open

[ruby shadow]

Are you sure this works? Do I have to call this every frame or something?

Entities still move my parent around lol

When I dump interaction blocks the parent I ran Create against is not visible at all

Create doesnt do anything

Bro gave me hope with unimplemented feature

[lavish lion]

I mean it is used for character in vehicle, so probably it works

you are probably giving wrong parameter or wrong setup entities

It is also used when you say remove physics interaction in slots

[ruby shadow]

I have 2 entities, I want them to not collide

Very simple

one of them is a character, another is a genericentity

[lavish lion]

This works only with dynamic physics entities as well

so maybe one of your entity is static

[lavish lion]

Otherwise you can try directly PhysicsBlock class but it is using the same

And you can see if it is returning you somthing null or not

But this API is very low level and not safe, you need to remove it yourself to not have memory leak

[ruby shadow]

ok

[ruby shadow]

Ok I turned off static on everything and iterated over all entities manually adding blocks against all other entities in the array using interactionblocksystem and I can see the blocks but my character is still pushed around by those entities

What this looks like in my use case is there is a character and it has a child that is added to it without auto transform, then I set world transform on that child every frame, and the character is moving at super speed because of the physics

Also WB keeps crashing

When recompiling scripts

It might be easier if there was some diag menu switch to dump all entities that are colliding with all entities

Then I could see which entity in particular or whatever is doing it

Should EOnContact be ignored when block is active?

Is it possible to do a block between two characters?

Yeah doesnt work between two characters

How do I disable all physics for a particular character?

[peak pike]

I saw this, not all but some

[ruby shadow]

Sweet

[lavish lion]

Probably characters doesn't check the interaction blocks

[iron mountain]

Is doors detecting collisions with characters/dynamic objects engine side? Is it possible to make them detect collisions with static objects?

[grave ledge]

Is there any solution anyone has found for this

At below 30fps the torque starts going crazy and the drone starts flipping everywhere, not doing the time scale also has the same effect but at less than 60fps

Doing System.GetFPS doesn't work and causes it to tweak out at any framerate

[grave ledge]

Does this still work?

[ruby shadow]

Not sure, I have some arcane wizardry in the code at the moment

[grave ledge]

Rip, this is really annoying lmao

[ancient field]

I use * timeSlice with applyimpulse, but use a worldsystem for physics hookup. Timeslice is from GetGame().GetPhysicsTimeslice(). I havent had any low frame rate issues iirc

[grave ledge]

Its only when doing applyTorque

ApplyImpulse is fine but ApplyTorque seems to act differently on lower fps

[ancient field]

If no way to fix it with ApplyTorque, then you could use ApplyImpulseAt with an equivalent force/moment arm to generate the same torque

[iron mountain]

Regarding objects wobblyness, i've figured out that single box collider tends to wobble, but 4 box collider drastically decrease/completely cancel wobblyness. Right one is default vanilla box collider. Left one -- i've added box "legs".

[timber flame]

Now I want to fling washing machines at Soviets with a Gravity gun

[iron mountain]

Feels like if it's just one collider it will likely wobble, but if there are at least 2 colliders in contact with the ground/floor it is more stable. Capsule "legs" though still wobble. Boxes are the best so far.

[iron mountain]

Nah, too heavy, though you can throw TVs out of windows.

[shadow vigil]

is there a way to make a static entity have physics?I know I can do it by script, I just thought there was a actual way..

[shadow vigil]

BTW luv this, could only imagine walking past a house and seeing a tv being launched out haha

[iron mountain]

It's more like other way around. Check HybridPhysics component. It's not used yet afaik, but i suspect it will be at least for tree parts.

In short you store dynamic physics info and then destroy/create static/dynamic physics on demand

[stone parcel]

You need to do these things at the correct points on the game update btw

If you cramp everything in OnSimulate, OnFrame or OnFixedFrame then you will have issues no matter what

[grave ledge]

I handle inputs OnFrame... which typing that out may be the issue

[zenith karma]

Can someone explain why grenades are falling through the map, I recreated terrain several times and wondering if there is a certain cell size I need to use to prevent this.

Also, stuff like bikes just don't stand on this terrain due to strange stuff with physics.

This is obviously early stage of map creation, but the issues are repeating no matter how many times I recreate the map using different settings.

[tight remnant]

https://community.bistudio.com/wiki/Arma_Reforger:New_Terrain_Setup#Create_the_Terrain_Entity see infoboxes

I guess orange is relevant for you

[zenith karma]

I actually went through that process several times thinking I did something wrong, but stuff still falls through the map after these steps

[tight remnant]

can you show pic of your settings then?

Try to also to restart Workbench

[zenith karma]

Which specific prefab would like me to screenshot?

I did restart Workbench many times just in case

[tight remnant]

terrain one

[zenith karma]

This is "terrain"

This is "generic terrain default"

[tight remnant]

so you have two terrains in world?

[zenith karma]

The guide says to use default one as well

either way, if I use 1 or another or both, the physics remain identical

By the way, I created the map using GriefDrums map tutorial, and he articulated that you need to use GenericTerrainEntity instead, I tried that, it resulted in this. Then I used the guide you pasted, but it's identical besides of Generic Terrain Default prefab, so I used that, but it's the same deal with grenades falling through

Does it have something to do with Cell sizes during terrain creation?
I am very confused, as this prevents me from actually working on the map, it's one of the first steps, but luckily I caught it early when I put the bike on the terrain and it wouldn't stand

After tossing couple of grenades, I realized that the map sees holes in terrain

[tight remnant]

can you post screenshot of whole world editor?

like whole window, with all panels

[safe drift]

anyone know who I can get the peices to spread out a bit mkore? at the moment they stick to each other

[zenith karma]

I have deleted several worlds, but I get all the way to the end of this tutorial, and if you fast forward you can see all of his settings.

https://www.youtube.com/watch?v=ZjIuwCDix-w

The only variation to my scenario is that I used a flat ground terrain, and did not use height map image snapshot as GriefDrums, but as soon as I follow his guide to a T, it's dropping grenades through terrain.

If you fast forward to the end of the video, the settings are identical to mine

[tight remnant]

I want to see what you are doing though

[zenith karma]

I just followed this guide down to every step, and considering that going through it all the way results in the same scenario, I started to check at the the point where I create terrain, drop Generic World Entity, and even at that point there is an issue. I feel like constantly recreating the same error scenario is not a way to proof check for errors.

If it is throwing that issue even at first steps, it won't disappear after 40th step. Hence why I deleted several maps after going through the whole guide 2-3 times

Then I reverted to checking each step for issues, and sure enough they are there from the beginning

[tight remnant]

Maybe you missed something, hard to tell without seeing it. Maybe other will be able to help you with so little info then

[zenith karma]

I am trying to understand what you are looking for, the entities on the left for errors, or do you want me to submit something else?

[tight remnant]

Everything basically

[zenith karma]

I will drop you some screenshots a bit later, I am in USA, so we are on different timelines

Maybe, you can see something there, but I really feel like there is an issue somewhere, and going 40 steps again is so annoying, as I am forced to recreate the whole process, although on GriefDrum's map he has no issues like mine

but steps are identical, just minus the terrain snapshot, because I left it as a flat terrain for sculpting using terrain tool

[grave ledge]

It wasn't this, just when I was applying the time scale and adjusting my flight model to represent it

Seems however that physics.ApplyTorque(torque * timeScale); works

[zenith karma]

I have sent you a private message, good sir
I partially solved the issue, but grenades are falling through up hill surfaces. It's like terrain is too "thin" at some places, and other spots are perfectly fine. I raised height map to test if the water is too close to terrain, but even increasing surface height did not change the physics dynamics

[ruby shadow]

Whats up with driving over a character crashing the game

[fickle osprey]

🤪

[ruby shadow]

You almost got me

[lavish lion]

It is written where it fails, just fix it 😉

[ruby shadow]

Roger will send a pull request when done

[crystal berry]

Are there any resources about vehicle bones and creating all these colliders?

[quaint tinsel]

Just these atm:

https://community.bistudio.com/wiki/Arma_Reforger:Car_Creation
https://github.com/BohemiaInteractive/Arma-Reforger-Samples/tree/main/SampleMod_NewCar

general rule of thumb is just check through one of the vanilla vehicles, mirror their bone names/collider setup etc

there's also some community guides like: https://wiki.nabla.sh/books/creating-a-vehicle-from-scratch

also a long video here from spacestrider of implementing a vehicle (very recent): https://youtu.be/fgpJBpRiZFc?si=ZmPkbdzJubCnfH6e

[crystal berry]

Cool thanks

[harsh minnow]

Hey, guys, can you tell me how do you add collision to an existing Reforger prefab?
Basically, I attached a prefab to a vehicle and when another vehicle collides with it, it just goes through it (clips through it), but bullets still register hits, with holes through that prefab.

I am guessing this object had no collision or collider set during the creation of the prefab, and if I enable collision nothing happens, so I am guessing collider does not exist.

Maybe, there is an easy way to enable collision for an object, or can someone explain what do I need to do for the object to actually bump into other cars as a piece of metal, not just a hollow body?

Thank you

[crystal berry]

Rigidbody component. Uncheck model geometry if its not working and create your own collider there box collider or whatever in that area on RigidBodyComponent

[zenith karma]

Thank you. When you say create collider, do you mean in Blender?

[crystal berry]

You can do it directly on the rigidbody component now. Create Geometry i think its called

If a primitive shape will work.

[zenith karma]

Just tried, and from the shapes I am creating I selected several, but I do not see that collider in actual window, to move it around, it is always invisible?

I am trying to use some of the geometry shapes there for an object such as this:

I can probably use something curved to set it against inside of the prefab, but I can't see the actual collider in view

[zenith karma]

And another question I wanted to ask you, is there a way to make this object bullet proof? I am getting shots through it as it's a thinner metal, is there a way to set a certain layer that is not penetrated by regular bullets?

The idea is to have a shield for passengers in the back, it is working aesthetically, but I am trying to get the geometry and physics right now. I have to guess where the geometry shape is though, I wanted to turn on visibility for it, but I can't see it, so I am just randomly picking numbers

Because I can't see what is going on, I am presented with an issue of collider being too large, where it is going into the passenger area, but I can still get in, but, it is clearly too far forward, and too far back, as when I bump the vehicle into it, you can see the gap of space from the back.

It's working, just needs to be adjusted as far as size, it's simply too large from the looks of it, and I am guessing it will be an issue once someone starts shooting, would the collider take the damage instead of an object and dampen or even negate the bullets?

Dropping a video to show what I mean

[zenith karma]

I noticed that going forward allows perfect distance now after adjusting, but pushing back makes the surface clip through, any idea why, and how to be able to see the collider, instead of guessing numbers?

[peak pike]

utilize the debug menu hold down windowsa key and alt
There are many physics debuggers there and vehicle debuggers

[sonic schooner]

Anyone know why my colliders keep killing me?

[ruby shadow]

I imagine because you are colliding with an active vehicle

Or rather active physics object

[sonic schooner]

thats unfortunate

Any ideas on a way for this not to kill me would be extremely welcomed

[peak pike]

override damage handling 🙂

[ruby shadow]

Short of making the player invincible... idk, not really

Just wait until next major update so moving on vehicles is released

[sonic schooner]

my heart bleeds bacon grease

[sonic schooner]

players moving on vehicle will be a joyous day

[ruby shadow]

Yeah so I think it's still worthwhile to develop your mod, hopefully the update then brings you the ability to realize it

[peak pike]

override CalculateCollisionDamage in charcater damage manager and als onDamage

[sonic schooner]

this worked thanks a bunch

[inland goblet]

I assume it might be fixed by itself on the next update which will feature walking on vehicles

So they’ll likely add « speed diff » based damages

[sonic schooner]

Thanks homie

[simple heath]

Hello, very good morning. I have a question about how to modify a vehicle’s performance. I tried changing the power of a lorry, but the result was that it started acting strangely on hills. I’m completely new to all this, so if you could explain it as if I were a child, that would be brilliant.

[glad solar]

Not sure if this is the right channel to ask. When assigning collider materials to a model, you have options like concrete_100mm, concrete_100mm_min and concrete.

Does the last one (concrete.gamemat) calculate the thickness of the concrete based on the fire geometry collider? I also wonder what the thickness override = Min parameter does (second material)

[light laurel]

They mention some information on this Wiki page https://community.bistudio.com/wiki/Arma_Reforger:Prop_Creation#Colliders_&_material_names
"For this example prop, Plastic_6mm game materials is used, since it is assumed that single wall is 3mm thick and due to to geometry is a simple box, those walls are counted twice. "
Hope this helps?

[glad solar]

Thanks for replying, that doesn't explain the two materials I had questions about though 🙂 I'm wondering if the engine calculates the thickness based off of FireGeo dimensions if you pick a gamemat without a predefined thickness such as concrete.gamemat

[tight remnant]

https://community.bistudio.com/wiki/Arma_Reforger:Weapon_Creation/Prefab_Configuration#Game_Materials

[light laurel]

that part in the Wiki is new or?

[tight remnant]

old

[fluid sail]

Hello, sorry for my English, I don't speak it very well, I'm making a map and I want to implement vehicles, the problem is that I can't get the vehicles to move, I have set up the game master, I take out a vehicle, I get in, but it doesn't move... how do I do it?

[thorny osprey]

hello all. I'm having an issue with a entities lagging out when going near it. I placed a radio tower and a radio relay merged into the electric box, just like the one on everon conflict mode. Is there anything I should be looking for to maybe fix these objects lagging the player out when they render it in?

[marble jewel]

Off the wall question, does the engine have rope physics simulation at all?

[ruby shadow]

Not really

[true linden]

It doesn’t have many things that even games over 10 years old have

[lavish lion]

No

[crystal berry]

Can't you just rig one with a bunch of bones?

What resources are there for using physics stuff?

And what about the power lines that can't be utilized for it?

[ruby shadow]

I tried to make a cape out of ragdoll physics but activation crashed the game almost every time

[crystal berry]

Ahh thanks for the info.

They did some kind of update to ragdoll physics in 1.5

[tight remnant]

https://reforger.armaplatform.com/workshop/65BB2D0679BCA058-Skyhook you can do it if you want - here is one mod which did it

[ancient crag]

Hey folks, I've got an odd issue where I'm using a ProcAnimComponent to rotate a target by 180 degrees - when it rotates past 90 degrees its UTM firegeo collider stops working. Is this a known engine limitation or something I need to sort out on my end?

[tight remnant]

increase bounding box

probably animated mesh is outside of original bounding box

[ancient crag]

aha, what defines the bounding box?

[tight remnant]

elements in model

[ancient crag]

aha got it, thank you!

[tight remnant]

you might search for what is bounding box 🙂

[ancient crag]

yes smart idea 😄 cheers

[shadow vigil]

isnt it just agent zero's sling loading mod but with a RHS bumper sticker on it so it gets more attention? No one has really achieved (thats released on the WS) MP Towing... The physics are a nightmare

[tight remnant]

Its a new solution, it has nothing to do with zeros sling loading mod afair

[shadow vigil]

This is as far as I got. I stopped trying after getting excited to test it out on the dedi to then find out it has a mind of its own haha

Was tryna make mario proud by using a worldsystem that updates physics when it changes to attached. But the dam system aint slick enough lol

[crystal berry]

1.5 also added walking on vehicles (rigidbody updating with other rigidbody positon I presume?) potentially could help a bit with it idk

[fading oyster]

correct, I don't know who zero is and have not tried any other towing or slingloading mods when making this

[crystal berry]

Think i'm gonna try a tarzan rope at some point.

After 1.5 comes out official i guess

[lyric marlin]

me - yeah you didn't touch joints. I was working on a rework which avoided joints and simulated physics using slot manager and local offset. Kind of funny how ideas converge. If you need help with some of the pendulum motion code let me know, there is also a hack where you can get a physics bodys mass in runtime to give the illusion that the weight has an effect on the helicopter. Kind of jank for helicopters because it just makes the controls really hard to use.

I'd like to get joints to work eventually but faking it with transforms is probably the only way to get something working today.

[fading oyster]

Maybe yeah let's get together at some point to brainstorm a v2

[lavish lion]

You can override the bounding box in the MeshObject component, so you can make it bigger to fit your animation, it is better than anything else

[ancient crag]

Thanks! Got it sorted, this was the fix 🙂

[blissful pasture]

not bad i must say for this being an arma title

[shadow vigil]

Cap

thats MeamNG

[ruby shadow]

Oooh singleplayer racing mod?

[blissful pasture]

we will be setting up race courses on our life server, the map in the video is what we play on

[ruby shadow]

Ah multiplayer? Not playable then, but it will be funny

[blissful pasture]

performs very well on our server, unless you get too close to other cars.
only issues i have seen with desync are from people on xbox series s

[ruby shadow]

I would love to give it a shot

[blissful pasture]

https://reforger.armaplatform.com/workshop/5CCC20B09E94E467-GatorsCarPack

thats the car pack, can use it standalone if you want or join one of our servers.

we officially host an american server, and we have 2 partners, one in france and one in spain who also host our life mode

(the van is a standalone mod itself) not included in the car pack

[blissful pasture]

imagine where we could be if reforger wasnt limited by console performance...

[ruby shadow]

Probably where we are right now seeing as it isn't

[zenith karma]

Cool cars, man 👍

[true linden]

Y rpl bubble soo small

[hollow basin]

Is there rope physics?
I wanna this for drop from heli

[glossy lodge]

Server performance, you can make it bigger it just makes server performance exponentially worse the more players are connected

[ruby shadow]

1500m is big enough, official servers run (or used to run) on 500m for some reason though

At 1500m you dont even see other characters anymore due to LOD/pixel size scale

[tired tree]

But you should be able to see characters at 1500 m. You can see them at that range in real life, or alternatively, in ARMA 3. Last time I checked the "eye zoom" was too low to represent properly a realistic angular size of characters on monitor, it's much less zoom than previous ARMA titles. I'm not claiming this is due to consoles however. But I would like to see a higher level of eye zoom. For reference, from US Army range estimation techniques with naked eye and average vision, one should be able to see...

200 m: the target can be clearly observed, although there is a loss of facial detail.  The color of the skin and equipment is still identifiable.
300 m: the target has a clear body outline, face color usually remains accurate, but remaining details are blurred.
400 m: the body outline is clear, but remaining details is blurred.
500 m: the body shape begins to taper at the ends. The head becomes indistinct from the shoulders.```

In Reforger this level of detail is certainly not apparent at those ranges.

Not really to do with Enfusion physics though 💀

[lavish lion]

It was already said that eye zoom is different but it is to represent more real life, I think it was mentionned by Klamacz a few times already

[ruby shadow]

I dont have zoom in my eyes should I get some kind of surgery to fix it

[stone parcel]

Just learn to do digital zoom from your mind. Easy

[grave ledge]

Is there a way to stop fast moving objects with small hitboxes from phasing through terrain

For instance this uses the 82mm .xob and just dropping it from my drone at 100m give it enough speed for it to phase right through the terrain

[ruby shadow]

Someone once told me CCD somehow helps

But I forgot what kind of configuration

[peak pike]

I attached a bigger rigid body to it.
From the geometries in the wokrbench (probably works)

I did with script sth like this a while back for m16 magazines because they fell through the map

        PhysicsGeom geom = PhysicsGeom.CreateBox(Vector(0.2,0.4,0.3));
        string material = "{3B2D2687F56BB4EF}Common/Materials/Game/WeaponParts/weapon_metal.gamemat";

        int t_iRet = phys.AddGeom(
            "Box"
            , geom
            , frame
            , material
            , EPhysicsLayerPresets.Projectile
            | EPhysicsLayerPresets.CharNoCollide
        );

[peak pike]

physicsblock not workin in 2025 Aug 20
Looks like not implemented still, because arkensor said it's not working (in 2023)
#enfusion_scripting message

[lavish lion]

Idk it is exactly the same thing as we use internally so I don't see why it would not work

you just need to be careful since it is pointer and you can create memory leak with it

[crystal berry]

Think it would be possible to hack together a sailing system with what we have access to?

[rustic harbor]

Yes

[crystal berry]

Sweet thanks dude. Wasn't sure if i should even try.

[stone parcel]

You know that is the annoying part I find recently with people that got hired (Myself included), said things in the past before we were or had any connection to BI and then got green name after getting hired.

He stated that before he was working with us.

So he was mentioning it on the context of himself as modder.

[agile crown]

does anyone have any ideas on how i would go about implementing a hydraulic bounce to a vehicle?
ive already made a proof of concept but it likes to send into low earth orbit when i pick up some speed with it active or turn too fast

set up in an action that just runs this basically:

vector curWheelPos;
for (int i = 0; i < wheelCount; i++)
{
    curWheelPos = simulation.WheelGetContactPosition(i);
    carPhys.ApplyImpulseAt(curWheelPos, vector.Up * (carPhys.GetMass() / 2));
}

[stone parcel]

https://www.youtube.com/watch?v=KF32DRg9opA

[rustic harbor]

Clamp the impulse that you're applying?

[agile crown]

yeah this was basically the issue

vector curWheelPos;
for (int i = 0; i < wheelCount; i++)
{
    curWheelPos = simulation.WheelGetContactPosition(i);
            
    if (simulation.WheelHasContact(i))
        carPhys.ApplyImpulseAt(curWheelPos, vector.Up * (carPhys.GetMass() / 2));
}

🚀 take-off occured most when at least one of the wheels werent on the ground so... checks out 🤦‍♂️lol

[stone parcel]

also

//! Applies impulse on the physics body at a position (world space coordinates).
On the doc. World Coordinates

So do not give vector.Up

Use the up axis of the entity itself. It will be most accurate

Specially if on slope or turned

@agile crown do entityVehicle.GetWorldTransformAxis(1) instead

[agile crown]

true, tyty

[agile crown]

been doing some more work on this, faking hydraulics as best as i can lol
lot more controllable now

hardest part was getting the inputs working 💀

[ruby shadow]

awesome!

multiplayer working?

[inland goblet]

That’s sick

[agile crown]

untested but its server authoritative so should be fine

[fallow lava]

What can I do here to prevent a slotmanagercomponent or Object attached to a vehicle from detaching from the vehicle when spawned in and move\with the vehicle?

[grave ledge]

Iirc it in the RplComponent of the object checking use parent node

If it's going to be permanently attached that is, if it's a regular object like an inventory item don't do that. I believe there's another setting in the slot manager itself in the slot to update rpl parent even if it's not set to in the object rpl component

[fallow lava]

The object is basically a bunch of explosive barrels in the back of the cargo trucks. They are attached to the bed itself, they can be primed by interacting with the barrels themselves just like the vanilla TNT blocks

[fallow lava]

You mean this right?

[grave ledge]

Yeah

[fallow lava]

Whats the difference with that instead of checking the "Update Replication Parent" in SlotComponent manager?

[grave ledge]

Idk, I couldn't get the latter to work

[coral summit]

Has it ever been attempted to use ragdoll physics for things like cloth and sling physics? As a separate slotted entity that just has ragdoll enabled like a corpse. Just something I thought about.

[ruby shadow]

Yes, I've tried to make a cape. The ragdoll editor didn't register most of my colliders and the game crashed upon ragdoll activation/collision.

It followed the reforger software development practices of Not Logging Anything Useful™ so I just gave up. Very likely I did something incorrectly but the software isn't telling me what.

[stone parcel]

There was a limit that was lifted not while ago iirc

[coral summit]

Interesting, thanks for sharing

[blissful pasture]

sooo... this is the only vehicle i have ever had do this... i cannot figure out why for the life of me, ive remade it like 3-4 times (the mesh) ive fixed all the colliders etc, set it up like any other vehicle. and the RPM bugs out and the truck will accelerate into infinity

after it bugs out i am not giving any input other than steering and trying to brake, i am not pressing throttle

does anyone have any clue as to what the issue could be? carcontroller component??
vehiclewheeledsim component??

ive made tons of cars and nothing looks messed up in either

i even removed the majority of colliders and it still happens

[peak pike]

when I adda geom to a physics with a script,
then proceed to .Destroy() the geom,
my game becomes crashed

[stone parcel]

my game becomes destroyed*

[timber flame]

lol

[timber flame]

Does it crash if you let it create geom for you by calling Physics::CreateStatic, then destroying that, instead of creating geom directly?

[peak pike]

Not sure.

                PhysicsGeom geom = PhysicsGeom.CreateBox(
                    Vector(3, 1, 3)
                );

I used this because I wanted to script the sizes and positions.
I need it "attachedTo" a car so I used t_Phys.AddGeom( to add geom to the car

I am currently testing another method,
I'm adding stuff in the slotsmanager for the car.
Then adjusting the interaction layers for the added entities in the slots.

[timber flame]

yea, I was gonna say, I would do that by making your attachment a seperate entity, putting it in a slot/heirarchy.

[peak pike]

using AddGeom would be the cleaner better way.
I could technically change the interaction layer on the added geom and just leave them as litter without destroying.

I'll test if the added slots cause perf issues at one point I guess then I can work back to it 🤷

[timber flame]

oh, also, vehicle is special case, not normal physics, so some physics functions are not going to work with it.

[peak pike]

Ye, plus I gotta test in MP to see that better

[timber flame]

idk how AddGeom is actually meant to work. Like, does it create a multi-shape, with single center of mass?

[peak pike]

🤷 I just used it for adding a big block with certain layer active

[stone parcel]

merge collider thing is probably messing you up i guess?

[timber flame]

that comment I was thinking specifically of SetAngularVelocity() not working on vehicles, I assume some other physics functions also have no affect?

or maybe it was ApplyTorque that didn't work on vehicles... don't exactly remember, just I couldn't rotate how I wanted

[south obsidian]

I heard, or saw, somewhere that there exists the ability in the engine (in Reforger 1.5) for player characters to move/walk around ontop of vehicles, while those vehicles are also in motion or being driven around. Is this true?

[odd tinsel]

Yes, but I believe it's just limited to cars. Only briefly tested it.

[ruby shadow]

cant stand on top of a helicopter?

[south obsidian]

Is it not code that can be allied to all vehicle types? I feel like cars are one area to benefit from it, but boats and even specific types of aircraft with interiors could also benefit. I think boats are the most ideal area for this capability.

[odd tinsel]

Absolutely no idea how it works just that I briefly tested standing in the back of a ural but didn't look into it thoroughly. Only heard it didn't work with helicopters from someone else, whether that's true dunno

The extent of me looking at it https://cdn.discordapp.com/attachments/1261548691878051891/1411078092377821235/2025-08-29_15-58-52.mp4?ex=68ce5f21&is=68cd0da1&hm=b6417a06976a823d24e9665518293f38f2efaae68cee6bf0e11aa17ff50fb9dc&

[south obsidian]

I would love if Bohemia could provide the details on how exactly to set this up on a vehicle, perhaps any vehicle and what the constraints are, etc.

[lavish lion]

No it is not, to everything, you can setup it in CharacterAnimationComponent

It is just that you can setup either whole object, or per collider setup, since you don't want to walk everywhere

It should be straight forward by looking at the properties in there

[odd tinsel]

So if we want people to walk on the rotor blades we can

[lavish lion]

Yeah, not sure if code of contact will just not kill you but technically you can yeah

You can even create your own platformer for example

[odd tinsel]

Neat, like I said I only heard it from soneone else and haven't dove into it. Thanks for the clarification.

[timber flame]

Is vehicle-on-vehicle possible? e.g. landing on deck of moving ship

[lavish lion]

no

[south obsidian]

One obstacle being overcome at a time is sufficient. Now that we can have player characters walking on moving vehicle the first logical feature to take full use of this should be litoral assets. Something i was begging for back when we got Tanoa in A3

[storm forum]

Hello guys, pls help! What the problem can be? It's as if the game doesn't see the wheels or something, the front of the vehicle just goes underground, if i set the bigger mass in (rigidbody), it will go underground even more.

[rustic harbor]

You need to know how to properly create the models for vehicles and set up their prefabs. There's a wiki article for that.

The problem could be any number of things. You're the only one that's knows what you have and have not done. Determining the issue by a simple screenshot isn't very likely.A huge part of modding is debugging.

[storm forum]

I followed the Wiki and sample car, but I want to know what, in theory, could be causing it to tilt? What part of the geometry (colliders) affects it like that?

[rustic harbor]

The part that you didn't set up correctly. You're the only one that knows what that is. If you followed the wiki tutorial and it doesn't work correctly then YOU missed something.

Double check the wiki and find out what you missed.

Like I said before, it could be any number of things.

[pearl elbow]

Helllooo, can anyone point me in the direction how the player can stand on a Vehicle in EXP 1.5 while the Vehicle is driving? I checked the URAL but can not find any new Component or Collider or something. I would like to implement this new feature to my Vehicles. Thanks

[agile crown]

https://discordapp.com/channels/105462288051380224/1025131938207498422/1403859264724013259

[fossil bay]

hi - if i place a cyan object and add rigid body on it seems i can still pass through it. for example BarrelMetal_01.xob seems to has this behavior. Anyone know how to fix or am I missing something? Thanks in advance!

[manic plank]

My character is not sleeping in the right place, why?

[crystal berry]

You are adding a mesh, not a prefab. If you add the rigid body on it manually, you will need to enable the collider on the geometry section of the rigidbody component.

[fossil bay]

thanks a lot for the reply! Where would i be able to find this? @crystal berry

[rustic harbor]

https://community.bistudio.com/wiki/Arma_Reforger:Prop_Creation

[fossil bay]

@rustic harbor thaks for the amazing mods! is the process somehow simpler if im just using existing props and not creating new ones?

[rustic harbor]

Just use the prefab and don't use the xob

There is 0 need to recreate a prefab that already exists

[fossil bay]

oh I see - i was blind it seems. thanks a lot! I was mainly interested in the following, which very little seem to work

some even come in with the rigid body prop (e.g. selected) yet it still doesnt work

[rustic harbor]

dst prefabs likely won't have working collison because they are spawned when a building is destroyed(dst).

Spawned then deleted over time, never really meant for physical interaction

[fossil bay]

ohh i see, thanks a lot for the info.

[rustic harbor]

Their physics is likely controlled by a destruction manager and has its interaction set at runtime when they spawn

[fossil bay]

so to build some custom ruins i would look for those that don't have the string dst in their name, correct?

which are very limited but i guess this is what i have to work with

[rustic harbor]

The link I sent explains creating prefabs

You can always create your own

[fossil bay]

ok - i will go in greater detail then. thanks a lot for your time. you have been very helpful!

[crystal berry]

Prefabs are .et and meshes are .xob

you can also filter types in the resource manager with the little funnel icon

[thin path]

Hi guys — can you tell me how to fix the weapon’s position? It looks completely unrealistic. Thanks in advance for the info!

[stone parcel]

https://tenor.com/view/mencantatusonrisa-balance-planking-gif-8320789

[south dome]

I think its due to the weapon offsets from the plate carrier, pouches, backpack and belt(if you use zeliks) stack.

So if both the backpack and the vest has a offset of lets say 20 to the right that would make the actual offset when both are worn 40

(I dont recall the actual values i just used the numbers for an example)

[rustic harbor]

That's default functionality that I never touched in my mod.

[south dome]

Yeah i know i was just saying from experience i copied a vest prefab once to make a belt prefab and all the values copied over so i didnt know why my offsets were stacking but it turned out i had forgotten to change the offset values in the belt prefab to zero

[hardy yarrow]

ive been trying to change ragdolls, yet anything i do, such as changing the physic material values or the ragdoll config, nothing works

[tired tree]

Does anyone happen to know the bullet wind drift physics?

I'm wondering if it is accurately modelled, that is, is a bullet's drift for a given wind proportional to the difference between the time of flight, and the range divided by the muzzle velocity? ie, t-(x/v0)

[marble stirrup]

Hey, why could it be that I am not able to move vehicles on a collider? I can stand on it and move fine, but not use any vehicles while on it. They get stuck.

[crystal berry]

This is a feature in 1.6 update

[willow crane]

change collider type

[wise girder]

is there any documentation on how to make helis ?

[rustic harbor]

Everything you need to know, you can learn from looking ad a base game heli.

At*

[median field]

I asked this with no clear answer before, but finally found it, on how they managed to get characters to stick to the cargobed in 1.6. So it links character to the collision box of the mesh object.

[median field]

added the truck to the linking and now you can stand on the hood like the cargo

[feral tendon]

Good evening, I have a question: I want to make the boats from the RHIB mod appear, but they only spawn on land . I can’t make them appear directly in the water. Do you have a solution to make them spawn directly in the water

[marble jolt]

I made a Naval Maintenance station where this is possible:
#1388793616717320284 message

You can find the script in the script folder in the mod that allows to spawn vehicles in water

[feral tendon]

very nice thank u

[wise girder]

ty steffen

[oblique wind]

Anyone got a more clear guide or list of bone names / socket names expected to be used in vehicles https://community.bistudio.com/wiki/Arma_Reforger:Car_Creation/Asset_Preparation says their is a page for pipeline I can't find unless it's referencing just the file structure setup

[willow crane]

only bones names matter, socket names u can name yourself

[ruby shadow]

Is there a collision layer that stops characters but lets through vehicles?

[willow crane]

https://community.bistudio.com/wiki/Arma_Reforger:Collision_Layer

[ruby shadow]

Could have just said no

[willow crane]

[timber flame]

I thought VehicleComplex does that. e.g. for Vanilla vehicles the vehicle-vehicle collision is with VehicleSimple and the Vehicle-character collision with VehicleComplex.

[lyric marlin]

Yeah, this should be right, vehicle complex stops characters because it's more complex, so for easier calculations only vehicle simple is used vehicle to vehicle

[ruby shadow]

Nice, was too lazy to read the docs

[gaunt gate]

Hey everyone! I don't know which section to post this in, but this is terrible. I've encountered a problem: some objects simply disappear when destroyed. I've reinstalled the game, removed mods, and tried every possible method and setting. Maybe some of you have encountered this problem. I'd be very grateful. By the way, the experimental version works perfectly, and all destruction displays correctly.

[iron mountain]

They just broken, don't worry, they will be fixed.

[gaunt gate]

Thank you! Are these assets broken for you too?

[iron mountain]

Yes

[supple junco]

anyone know where the script/component is for being able to walk with stability on vehicles?

[lyric marlin]

^

So it looks like just add the prefab to the animation component, select the collider to be walked on, and probably make a config like the other entries, then good to go, just make sure to only add to it so it doesn't mess with other modders lol.

[rigid tusk]

Im not very good with the config stuff but how exactly did you do it? Im having an issue where Ive added armor plating around the bed of the truck but with the armor plating on it It doesn't allow for people to ride in the back. Do you add the prefabs into the list of linking objects?

[lyric marlin]

I mean it's above, it needs the exact collider the player should link to

so if the player is standing on an intermediary collider - from a different object, likely not linked

[rigid tusk]

Alright. I guess im more just confused than anything because technically the player is standing on the normal bed. But with the armor around the box of the truck you glitch out and fall out like before. So not sure exactly whats going on. I generally dont screw around with this stuff much. So entirely new to it.

[lyric marlin]

Yeah also could be that the armor bed version is not a linked object

since you probably added the base, that's what I would guess

[rigid tusk]

So next question and this might sound stupid as hell but the base character can stay in the back now. which I got the armor shut off. But if I put myself in the back and have an AI drive the truck I slide right out. Do I need to do something special to the base character so it applies to every character or?

Heres a video that better shows what Im talking about

I suppose I need to do an override on the base character?

[lyric marlin]

Yes, probably, ideally an override is already active

[rigid tusk]

I got it all to work out. Thank you for the help I appreciate it.

[low helm]

Hey, first off thanks for posting this. Saved me hours. Question for you, When I add another "Linking object", in this case an overriden cargo bed, it doesnt allow me to select any colliders. the dropdown only has one option "all colliders". Any ideas on how to select the proper colldiers?

[late prairie]

What did you end up doing? Having the same issue.

[pallid lily]

hey, What prevents the vehicle from taking in water while floating - if it's the collider, which one?

[errant elk]

not the collider, a dedicated mesh assigned with WaterErase Material

[pallid lily]

YES, SOMEONE ALREADY TOLD ME ABOUT THIS, IM TESTING BUT HAVE TROUBLE

[errant elk]

here , @pallid lily

[pallid lily]

:p

[errant elk]

make sure to verify face orientation, front is inside

[pallid lily]

THX I WILL BE TESTING THIS

[pallid lily]

yes but not working, i dknow why its white-red box :/

maybe i dd something wrong

[errant elk]

error in material, no textures

make sure to grab the watererase emat

from vanilla data

[pallid lily]

did this

[errant elk]

🤔

[pallid lily]

it worked once when the material was outside, when I realized and recalculated inside it didn't work anymore

now its red-white color inside

[errant elk]

Your material applied to the mesh is a MatPBRBasic

you need it to be a MatWaterErase

go to those highlighted folders, find default_waterErase.emat

drag and drop it over the material slot on your xob

Or

open the created emat at import

[pallid lily]

it is, MatWaterErase. How to export FBX without textures, therre is original vs mine

[errant elk]

at right top, choose change class, select MatWaterErase

[errant elk]

Click on square

Also checkered tecxture could come from your defaulftgenerated material instead, if water erase worked correctly, you shouldn't be able to see it so...

[pallid lily]

but not working, my material or original, doesnt work... same error. original still show no textures, mine 1

now, checking material doesnt work

🤣 🤷‍♂️

it worked only the first time, now same white-red boox 😛

[pallid lily]

when im changing class to matwatererase still same:

😓 🤔

even when i drag oryginal emat

[pallid lily]

OK, it works. I had to create a new shape - a new object. The previous one was blocking, I don't know why... I set the name to UCX_ for a while to set the Material to WATER using the Enfusion add-on in Blender. I changed the name back to XXX object and then it works correctly. THX FOR HELP !!! now there is no water in Car

[errant elk]

Glad you found out, also, keep in mind that suffix are very important, use UCX for colliders meshes only ! 🙂

[upper wing]

I dont know if this is the right place for this question, sorry in advance.

Im trying to make mod that would make base building a bit easier with more larger fortifications.

So I made some fortifications that puts one sandbag on top of another and Im wondering if there is a way to destroy both sandbags when bottom one is destroyed, so they dont stay floating in the air.

[lyric marlin]

make each sand bag in the stack a child of the previous one maybe? and play with damage manager config so that destroying the parent destroys the child?

[crystal berry]

Are there any limitations on the rigidbody on rigidbody movement thing? Like does poly count of the main moving body influence it?

[deft turret]

can anyone tell me how to fix the water clipping it works like normal water except i cant swim in it or see the underwater effects the rest works such as shooting the water makes a splash

[supple junco]

anyone familiar with SCR_VehicleBuoyancyComponent, if ya feeling nice gimme a message xx

ive got it working, but wanted some advice for fine tuning before releasing boat mod

[visual hull]

Hello everyone. Since the last update, any modded vehicle in my project makes the Workbench crash instanlty when it interacts with anything that is explosive (grenades, rpgs, helicopters rockets, etc). It seems to happen more easily when the explosive projectile hits holes in the vehicles. I checked all my vehicles FireView balistic collisors, all my UTM's are lightweight (around 1000 to 2000 faces, like vanilla ones), all of them are closed and uniform, but Workbench crash at every interaction with something explosive. Any insight of what is happening? Vehicles from others mods that are published in workshop don't crash when i use it as dependency in my project, only the vehicles of my project (that is not published yet).

[stone parcel]

Have you got a crash guid?

[grave ledge]

How can I stop my rigid body from phasing through the world without triggering a contact

I drop this from 100m it just completely phases through the terrain and EOnContact never fires, I've attempted to attach a larger geometry box to no success

override void EOnInit(IEntity owner)
    {
        super.EOnInit(owner);
        PhysicsGeom geom = PhysicsGeom.CreateBox(Vector(5,5,5));
        string material = "{3B2D2687F56BB4EF}Common/Materials/Game/WeaponParts/weapon_metal.gamemat";
        vector frame[4];
        owner.GetLocalTransform(frame);

        int t_iRet = owner.GetPhysics().AddGeom(
            "Box"
            , geom
            , frame
            , material
            , EPhysicsLayerPresets.Projectile
        );
    }

[visual hull]

If the GUID you are talking about is the one inside CrashReports.log, then yes. It is: 6ef9f875-91a0-415d-8daf-8c34242e7822

[quiet pike]

Anybody worked on anything non-lethal? I’m aware that projectiles can deflect off helmets, leaving the person unconscious with no bleed. I’m wondering if anybody has tried to make a firearm that will uncon a person every time, wherever they are hit

[viscid plank]

When I apply force to an object using “phys.ApplyForceAt(angled, forceWillApply);”, the object acts differently depending on the FPS. Is there a fix for this?

[ancient field]

Apply in FixedSimulate and multiply by fixedTimeSlice

[viscid plank]

there is no build-in function for this?

[ancient field]

That is the nominal way to do it

[grave ledge]

This still had the effect of FPS dependent physics for me for some reason, I had to switch to ApplyImpulse to get non fps affected physics

[stone parcel]

There is no FixedSimulate in AR

Did you mean FixedFrame?

If so then don't do that

[ancient field]

Sorry, yeah my bad. Simulate

[stone parcel]

ApplyImpulse is the more correct way to do it

make sure to do it based on prev simul step velocity and current somul step velocity

phys.ApplyImpulse((velocity - lastVelocity) * phys.GetMass() * YOUR_COEFF_HERE * timeSlice)

[grave ledge]

👀 huh

My drones dont do that but im too afraid to touch the physics code at this point so im just gonna assume through some voodoo black magic and my manic state i made that code in it somehow does all that

[stone parcel]

If you see any sort of skipping or sluggishness

Then it's that

[grave ledge]

Nah, only issue I had was torque going insane at low fps, I fixed that while ago and I honestly forgot how

[stone parcel]

Or any sudden random slowdown from time to time (No, it's not network related)

[lyric marlin]

Anybody have experience with applying impulse in multiplayer for a vehicle? Seems to disagree a lot with owner, seems like timing issue, not sure if correctable or not.

[lyric marlin]

@ruby shadow since you were asking about this a while ago, what I had to do to do this and have it not be terrible for the owner is:
SetAllowance on server side component to cranked out values (I set all to 300)
ApplyImpulse on both server and vehicle, with as much determinism as possible (I am running the same calculation for what position on server and client, yet server auth means it can desync still without the above).
The final key was RPC the vehicle transforms to server to tell the server to set the vehicle's position to the owner's idea of what is happening. Performant? Probably not, though I am doing it on unreliable channel, and could probably space it out more until I find the threshold where server sim corrects client sim.

[ruby shadow]

I just made my vtol client authoritative and it solved all the UX issues imaginable for the pilot

[stone parcel]

If you are using Nwk move component then you should not mess with clients even if owner

Also, if you are using physics then never use anything that changes the entity transform in any way

Once you use physics, you should stay with physics alone

[lyric marlin]

Not sure what a better way would be, this is the only combination of things which works on a dedicated server. I'm not messing with Nwk on clients, only server because that's the place it has effect. Can you elaborate on changing entity transform? You mean not using ApplyImpulse at all or not replicating it? Or something else

[stone parcel]

Not using any entity method that changes the position, direction or scale

If you use physics, then you must stay within that Physics API to do changes to entity

[stone parcel]

Client doing it is fine as long as the server also confirms that what the client processed makes sense/is valid, and provide corrections if not

[lyric marlin]

Trying to understand. Example, SetPosition should not be used when ApplyImpulse is used?

[stone parcel]

Also take into account that it is worth it to also do the simul based on inputs on server at the same time, so that if the client lags (The onw controlling it), or drops packets, other clients will not receive choppy replication of the entity

[lyric marlin]

I'm fighting the vehicle movement components for example

[stone parcel]

Avoid SetOrigin and those in IEntity

Anythign that sets/changes the transform of the entity, that is not in Physics class

[ruby shadow]

I prefer my implementation because it was playable as opposed to teleporting into trees and blowing up with vanilla vehicles, thanks

[stone parcel]

This will also help on other clients to not get slowed down simul if the controlling client has low FPS

[lyric marlin]

How can I tell vehicle sim "this is ok" without corrections, because I tried having deterministic calculations on server and client for this and the server said "no".

[stone parcel]

I am not saying yours is wrong

I am saying that also add all those I mentioned if you want it better

[ruby shadow]

I see what you mean but I did not want it to become unplayable

[stone parcel]

...

Read

You will retail what you have

It will just make it better for proxies

[ruby shadow]

If a hackerman starts teleporting in my vehicle I click the ban button, it is an easy problem to solve

[stone parcel]

owner will still have it the same as you have

[stone parcel]

It's not only for that

again read

You will make the UX of the proxies better if you do that

So owner wins, you get the same you had right now

And proxies have it better too (Smoother)

[lyric marlin]

I tried having parallel simulation, but vehicle sim kills whatever I do with Physics, or makes it unplayable

[ruby shadow]

It was really smooth tho

[stone parcel]

Because Veh sim tries to do it's own simul

[stone parcel]

It will be smoother 🙂

Specially under crappy conditions

From owner, server and even proxies

[lyric marlin]

Which is why no matter how much allowance is given none of it matters because the vehicle sim ignores external forces, which leads to desync and stutters when only physics API is used

[ruby shadow]

And when I interpolated into the future on clients it was easier to shoot them compared to vanilla also because your bullets most of the time actually hit the target serverside

[stone parcel]

Yeah, if you want custom then you have to do your own controller

Otherwise it will be never ending fight

[lyric marlin]

So what's better, setting entity position periodically to make the vehicle sim happy for making a mod which disables all NwkComponents?

And implements custom controller

[stone parcel]

Do what I mentioned, it will be better. Even on small entities

It's more work yes, but you get better results

But if your usage does not really need it, then not worth it

If you need fast paced simul, then do it

[stone parcel]

Again

IF you have physics simul enabled

Don't do methods that change entity transform

Outside of physics APIs

[ruby shadow]

Man I really miss flying the stupid thing

[stone parcel]

Physics system will get wrong reference if you do that

[stone parcel]

It made to some funny situations ngl

@lyric marlin on proxies do not use Physics, unless owner

On proxies set the transform and interpolate (You will get updates every fixed frame due to how Rpl works, so you need to interpoalte)

[stone parcel]

Make sure that on proxies (NonOwner) the Physics instance is set to collision only

Proxies should replicate, not simulate

So, you can send the bare minimum to do so

[lyric marlin]

Can I get around this by using physics on owner and entity transform on server

[stone parcel]

No

Things will phase out/tunnel on server

You need to do the simul on server, otherwise you will get messed up results

Pure client simul is wrong for many reasons, this is another one

If you make your controller based on inputs

Just send the active inputs to server

and run the exact same simul on server

then issue final transform from client/owner to server

and try to force the server to take it, but if it's to far away from what the server has, then you can ring a bell about something happening (taking into account FPS, lag, etc) but that is more advanced

If the bell is rang, and very bad case then force server transform into client/owner

then every fixed frame on server report transform to streamed clients

On those clients (NonOwner), just use entity transforms

Add a serial number to the transform updates, from both sides

So you have deterministic control

As what you get from Rpl can be out of order

If you do this

Then for example with the modded planes

You can avoid the choppyness

You can avoid the bouncing back and forth when going in fast speeds

You can avoid tunneling

etc

You can also make it on all sides as smooth as FPS allow

And in this case, done like this

What the client did, is exactly what server gets in the end

and what everyone else sees in the end

[lyric marlin]

I just don't understand the circular dependency that is being explained, because it sounds like you are saying the server acts off of pure physics, calculates, compares simulation to owner, and then broadcasts transforms to proxies. But what exactly explodes the game to add additional physics forces to the server, and for the server to get bumped on entities new position, because it upsets the movement component's idea of simulation? Just seems like such a flaw that the component will not take outside force into consideration, because how are explosives handled then? Does server and client simulate and compare under normal rules? If so why does that work but this does not without the hacks?

[stone parcel]

And owner does not feel any lag, as server does not force anything unless it's misaligned badly

[stone parcel]

It's the solver of the Physics

It's a bullet physics thing

If you force set a position, without accounting for anything else

You break what the physics simul is solving

It's reference is now wrecked

So it will try to correct and in that correction you will find inconsistencies

btw I have to leave so you will receive replies probably later

[lyric marlin]

With Set Allowance though it should be fine with this (fine is a loose term, but how bad is the extra work)? Or is this performance issue for server?

Then you have the question of joints, which when used without entity methods, horribly desyncs when you'd expect for the physics to have some sort of sync or solver between server and owner.

And if GM teleport manipulates entities with physics, what circumstance makes that allowable or safe?

And withstanding all of the advice not to do it, if it's accepted that the outcome will have issues - can it be allowed?

What would be a theoretically acceptable rate at which the physics reference gets wrecked? Assuming I can space out my transform overrides on the server? How important is a continuous uninterrupted physics reference? How far does replay go back?

[stone parcel]

I think you got confused. It seems we are talking about different things

Before bacon got into conv and it deviated a bit with that. Can you try to explain again what you were facing and doing?

Because i explained two things at the same time, one was related to yours, and another on a tangent with bacon about custom simul impl

In general, there is the rule that if a game client (be server or player client) is simulating an entity with physics then any sort of entity transform is a no go

If you need to set some ransform for something when phys simul is active, then use physics SetTargetatransform

Also

Are you doing custom impl, or extending some vanilla simul?

Because that changes the whole thing

For example projectile simul is now more limited on that aspect

Vehicle ones has certain expectations as well

Etc

Using nwk component also limits you on others

So knowing your specific setup is quite important

[lyric marlin]

Essentially, I’m trying to solve two issues. One situation, I am trying to have weight affect helicopters, I accomplished this fine in single player with applying impulses to the model based on weight, this has the effect of rotating it slowly which can be counteracted. On dedicated server, applying impulses on server means that there is no feedback for the owner, which means about once a second owner sees a correction due to desync, the same happens when doing it on owner only, but server corrects to no impulse version. Doing impulses on both would get close but still have stutters.

The other issue was similar but far more noticeable, attaching two vehicles with a 6DOF physics joint either:
turned the helicopter into a bobble head, attached to the vehicle.
created compounding forces where the vehicle and helicopter lifting it would flip out and crash.
No combinations of parent/child, owner, server, etc. would yield any satisfactory results.
I will try to switch to set target transform and see if vehicle sim/nwk movement bites on it. Here is a video from a year ago relying off of joint creation, to demonstrate the issue.

https://youtu.be/a0t1d04V5LE

[lyric marlin]

I am pleased to announce using SetTargetMatrix with physics API and avoiding entity API does work for my purpose. Thanks for the advice and insight on why these things can conflict

[stone parcel]

Hey, ended up loaded with work so I was unable to come back.

Glad to hear it solved your issues.

[lyric marlin]

Celebrated early, it appears to work fine, but over time a desync will happen where for server/other players the aircraft orientation is very wrong after flying around for some time, as in nose will be facing the sky while hovering, I guess some pointers on how to fix this type of desync would be good when it's physics related.

[stone parcel]

I will need to see your whole impl

It's heavily dependant on that.

[lyric marlin]

Trying to build a slimmed down component to reproduce the issue without having you wade through hundreds of lines of code.

[serene dune]

Hello, was looking for help in making a "laser bolt" projectile. Struggling to actually make it work even when trying to get the projectile simulation once it leaves the gun. Setting projectiles in game mass to 0 or 0.00001 just makes them do 0 damage and negates all other properties. Any help would be appreciated.

[ruby shadow]

Didnt you guys have them in the mod already?

[serene dune]

yeah, and they broke and just cant get them to work 🙁

[ruby shadow]

Well at least you can play laser tag

[stark solstice]

Hey @ruby shadow 🙂 Please may i ask... since the new 1.6 persistence and your zombie updates!
i noticed the timer on the Zspawn doesn't take hold after 1.6 - in 1.5 if you set a infected spawner and set the options to say spawn 5 infected at a 2m radius and only spawn upto 5 in say 1800 seconds/30mins...
everything works perfect other then the timed respawn value...
its almost like the timer is invalid and the spawner will continue to spawn above the set amount say 10 max... but on my server after restarts we had over 400 zombies... like on persistence servers it would save the last amount of zombies and when server restarted it spawns the last saved load and then spawn all previous entities plus start the spawners again...
meaning at one point i had over 1800 zombies on one island..
is it possible to make it work with the 1.6 persistence - meaning upon server restarts or shutdown.. it would auto remove the entity and when server reloaded... instead of duplicating the
started at 0

[ruby shadow]

I'm not touching the 1.6 persistence system related things until the system works

[jolly sand]

interesting

[abstract terrace]

hey guys, is the sling load mod still working? It used to be fine in my server but suddenly we cannot carry any vehicles with helis

[near hare]

hey guys, anyone know how i can scale vehicles and update mesh etc to scale aswell?

i set tire heights increased traction and engine power and they are driving ok but the colliders weem wonky

when i move it around in game master it reverts back to original size but it stays up in the air im guessing because of the edited wheel heights

i am very very new so any help is highly appreaciated

[stone parcel]

Game and engine both do not generally support/expect you to scale entities in terms of their transform

So you will have issues over and over

Cars and characters are notably one of the worse ones to scale

[near hare]

i see, i had a large humvee with a slot and structure attached, everything was working except for the fact that when i tried to stand on top of the structure my character would get launched into the sky or across the map, im guessing this is just colliders behaving incorrectly?

also any way to stop an itme inheriting scale when attached to a slot on a vehicle?

so i upscaled my vehicle, got it driving ok, then tried to attach a structure to a slot on it and the structure is autoamtically scaling up the the same size as the vehicle

im thinking maybe i can just scale the vehicle itself up and then attach a normal sized cargo bed on top that wont launch me off the map. maybe im misunderstanding the mechanic

i actually even got the base char to stand on top without getting launched, but then my animation stopped working and the char would slide off the structure when the vehicle would move

i already set up the structure to be "sticky"\

ok it seems that the cargo bed.ent doesnt liek to be placed into a slot like that and wont appear, i am now using a cargo container instead and it appears

[near hare]

LORD ITS BUGGY

[crystal berry]

Yes physics stuff is very touchy.

[near hare]

ok i got an easy one how do i apply the base characters attributes to the rest of the characters? ai still sliding off the trucks

[fading oyster]

which slingload mod?

[wispy tartan]

A question about which Layer Preset to use in Geometry Params for a group of containers that are all one piece.
I chose BuildingFireView, but I'm not sure if it's excessive.

[woven salmon]

PropFireView if they're just simple props. If they have building components like doors, rooms to naviate etc better to use BuildingFireView

[dense sedge]

Hey guys, I can't find a way how stop trees fall just with light contact with heavy vehicles, it's not that realistic I would say 🙂 "Collision" and "Kinetic" multiplies didn't help, I tried to change "Max health" but nothing changed when I ram it. Any ideas please ? 🙏

I guess, I'm asking on a wrong topic 😅

[wispy tartan]

Thanks for the reply...
But Prop is Dynamic, isn't Building more optimized, which is Static?
And is View (ViewGeometry) really necessary?

https://community.bistudio.com/wiki/Arma_Reforger:Collision_Layer

[woven salmon]

Depends on what your use cases are I guess. As for view geo if you planned scenarios etc have AI and you want them to perceive the model you should have it

[wispy tartan]

Yes @woven salmon, i have read about perception... but what is the difference between navmesh and viewgeometry?

[woven salmon]

There’s a difference between navigation and perception

Nav is how they actually walk, drive it etc

Perception is does it exist in their brain or can they just see shit through it

IIRC

Doesn’t help enfusion re-uses terms from a2/a3 but different use cases I gotta separate them in my brain

[wispy tartan]

Hmm, so like what obstructs the AI's vision. I get the idea.

[wispy tartan]

Yes, we need a brain reset, ha ha ha!