# \#constraint **URL:** https://forums.unrealengine.com/tag/constraint/1937.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Constrained objects in level sequence crashes live session](https://forums.unrealengine.com/t/constrained-objects-in-level-sequence-crashes-live-session/2555311)
**Author:** [@ajamesmark](https://forums.unrealengine.com/u/ajamesmark)\ **Replies:** 3\ **Last updated:** [November 19, 2025, 5:34pm UTC](https://forums.unrealengine.com/t/constrained-objects-in-level-sequence-crashes-live-session/2555311 "2025-11-19T17:34:34Z")
Summary When an object is constrained to another object in a level sequencer, that sequencer will crash Fortnite when it is played. Please select what you are reporting on: Unreal Editor for Fortnite What Type of Bug a… --- ## [OnConstraintBroken not called after BreakConstraint](https://forums.unrealengine.com/t/onconstraintbroken-not-called-after-breakconstraint/479996)
**Author:** [@RC-1290](https://forums.unrealengine.com/u/RC-1290)\ **Replies:** 6\ **Last updated:** [May 15, 2025, 2:33am UTC](https://forums.unrealengine.com/t/onconstraintbroken-not-called-after-breakconstraint/479996 "2025-05-15T02:33:11Z")
Unreal Engine 4.26.1 commit: 5df54b7ef1714f28fb5da319c3e83d96f0bedf08 To demonstrate this I created a scene with a cube constrained above another cube. If it hits the ground and breaks the constraint, it fires the even… --- ## [Possible to change constraints stiffness, damping, breakable during runtime?](https://forums.unrealengine.com/t/possible-to-change-constraints-stiffness-damping-breakable-during-runtime/360662)
**Author:** [@SkeetonYu](https://forums.unrealengine.com/u/SkeetonYu)\ **Replies:** 7\ **Last updated:** [January 17, 2025, 10:19pm UTC](https://forums.unrealengine.com/t/possible-to-change-constraints-stiffness-damping-breakable-during-runtime/360662 "2025-01-17T22:19:53Z")
I just started playing with constraints and so I made a procedural constraint. Now the problem is trying to access and control all of my added physic constraint. I can’t seem to find a node or set its stiffness, damping … --- ## [How to set "Constraint Actor 1" in blueprint?](https://forums.unrealengine.com/t/how-to-set-constraint-actor-1-in-blueprint/282830)
**Author:** [@ZoltanE](https://forums.unrealengine.com/u/ZoltanE)\ **Replies:** 13\ **Last updated:** [August 20, 2024, 6:37am UTC](https://forums.unrealengine.com/t/how-to-set-constraint-actor-1-in-blueprint/282830 "2024-08-20T06:37:11Z")
I’m spawning a new PhysX Constraint Actor and I’d like to set it up by pointing it’s “Constraint Actor 1” and “Constraint Actor 2” properties to actors already in the scene. However in the blueprint node list I couldn’t … --- ## [How to add Constraint Component to a bone?](https://forums.unrealengine.com/t/how-to-add-constraint-component-to-a-bone/446698)
**Author:** [@Slavq](https://forums.unrealengine.com/u/Slavq)\ **Replies:** 5\ **Last updated:** [June 29, 2024, 11:10am UTC](https://forums.unrealengine.com/t/how-to-add-constraint-component-to-a-bone/446698 "2024-06-29T11:10:03Z")
Constraint components can be used to connect e.g. two static meshes together with physics simulation. But is it possible to connect static mesh to a skeletal mesh bone using this? I’ve tried the SetConstrainedCompone… --- ## [Is there a 6dof constraint limit available?](https://forums.unrealengine.com/t/is-there-a-6dof-constraint-limit-available/279787)
**Author:** [@anonymous\_user\_518c3a4c](https://forums.unrealengine.com/u/anonymous_user_518c3a4c)\ **Replies:** 4\ **Last updated:** [March 17, 2024, 10:49pm UTC](https://forums.unrealengine.com/t/is-there-a-6dof-constraint-limit-available/279787 "2024-03-17T22:49:04Z")
Hello there. I need to lock constraint on one axis, Z positive for example. Currently i was only able to set limits for both positive and negative values at the same time. Is there a 6dof constraint available actually? … --- ## [How do I restrict my character's movement to one axis?](https://forums.unrealengine.com/t/how-do-i-restrict-my-characters-movement-to-one-axis/1568760)
**Author:** [@hanuwu13](https://forums.unrealengine.com/u/hanuwu13)\ **Replies:** 20\ **Last updated:** [January 7, 2024, 6:55pm UTC](https://forums.unrealengine.com/t/how-do-i-restrict-my-characters-movement-to-one-axis/1568760 "2024-01-07T18:55:07Z")
So I just started working on my very first UE5 project. Approach is to make a movement based game with sliding mechanic and I used two vids for reference and created a blueprint that decreases your mesh size and increase… --- ## [Lock a bone position with IK and override animations?](https://forums.unrealengine.com/t/lock-a-bone-position-with-ik-and-override-animations/286063)
**Author:** [@Stephen\_Hess](https://forums.unrealengine.com/u/Stephen_Hess)\ **Replies:** 3\ **Last updated:** [November 13, 2023, 1:48am UTC](https://forums.unrealengine.com/t/lock-a-bone-position-with-ik-and-override-animations/286063 "2023-11-13T01:48:56Z")
I’m trying to find a way to lock the neck bone of a character to a position in the world and have this limit the body positions of the character’s playing animations. (i.e. the animations might be an idle sway or a hit … --- ## [How to limit how far a component can move in one direction?](https://forums.unrealengine.com/t/how-to-limit-how-far-a-component-can-move-in-one-direction/353918)
**Author:** [@anonymous\_user\_33bb0bed](https://forums.unrealengine.com/u/anonymous_user_33bb0bed)\ **Replies:** 9\ **Last updated:** [April 6, 2023, 12:15pm UTC](https://forums.unrealengine.com/t/how-to-limit-how-far-a-component-can-move-in-one-direction/353918 "2023-04-06T12:15:22Z")
I’m trying to set up a linear constraint such that a static mesh can only move so much in a given direction. Think of it like a drawer. When the drawer is closed, it can’t move any more inwards. However it can move outwa… --- ## [Is there a way to lock the axis on a Pawn/Character BP?](https://forums.unrealengine.com/t/is-there-a-way-to-lock-the-axis-on-a-pawn-character-bp/286442)
**Author:** [@CardDeath](https://forums.unrealengine.com/u/CardDeath)\ **Replies:** 10\ **Last updated:** [June 10, 2022, 9:24pm UTC](https://forums.unrealengine.com/t/is-there-a-way-to-lock-the-axis-on-a-pawn-character-bp/286442 "2022-06-10T21:24:02Z")
Hi all, my main problem at the moment is I am making a pong style game to test my understanding within the engine. The ball currently fires with a set velocity and then keep the same velocity as it hits every paddle howe… --- ## [Disable constraint rotation lock through blueprints](https://forums.unrealengine.com/t/disable-constraint-rotation-lock-through-blueprints/469185)
**Author:** [@Astromanson](https://forums.unrealengine.com/u/Astromanson)\ **Replies:** 3\ **Last updated:** [April 1, 2022, 5:55pm UTC](https://forums.unrealengine.com/t/disable-constraint-rotation-lock-through-blueprints/469185 "2022-04-01T17:55:54Z")
Hello, there’s locked rotation on my game object When I’m trying to disable the lock with blueprints- it nw working, rotation’s still locked. Blueprints: Imgur: The magic of t… --- ## [Physics constraint positions](https://forums.unrealengine.com/t/physics-constraint-positions/505956)
**Author:** [@BaseReality](https://forums.unrealengine.com/u/BaseReality)\ **Replies:** 0\ **Last updated:** [March 11, 2022, 10:41am UTC](https://forums.unrealengine.com/t/physics-constraint-positions/505956 "2022-03-11T10:41:19Z")
Hi Im picking up an actor with physics constraints ,with both hands. I have managed to set to position of the primary grab to be perfect in the hand when the primary constraint is activated. But Im having a small issue… --- ## [Physics Constraint Actor Linear 'Offset'](https://forums.unrealengine.com/t/physics-constraint-actor-linear-offset/363238)
**Author:** [@anonymous\_user\_da33a630](https://forums.unrealengine.com/u/anonymous_user_da33a630)\ **Replies:** 3\ **Last updated:** [October 20, 2021, 8:07am UTC](https://forums.unrealengine.com/t/physics-constraint-actor-linear-offset/363238 "2021-10-20T08:07:46Z")
Hi guys! I was working with the Physics Constraint Actor connecting a drawer to an island, enabling only a simple one-axis movement. The problem that occurred is that I could not find a preset so that my drawer would be … --- ## [The Physics Handle won't work well with Physics Constraint Component](https://forums.unrealengine.com/t/the-physics-handle-wont-work-well-with-physics-constraint-component/480757)
**Author:** [@Addeman](https://forums.unrealengine.com/u/Addeman)\ **Replies:** 1\ **Last updated:** [March 24, 2021, 9:24am UTC](https://forums.unrealengine.com/t/the-physics-handle-wont-work-well-with-physics-constraint-component/480757 "2021-03-24T09:24:45Z")
Hi! I’m trying to make it so that when I lift a physical object, say a cube, it is grabbed at location with physics handle, and when grabbed, I want to freeze/lock its rotation, so it won’t swing around in the hold, and… --- ## [Programmatically lock rotation axis not working](https://forums.unrealengine.com/t/programmatically-lock-rotation-axis-not-working/476455)
**Author:** [@Fatorice](https://forums.unrealengine.com/u/Fatorice)\ **Replies:** 0\ **Last updated:** [December 27, 2020, 4:35pm UTC](https://forums.unrealengine.com/t/programmatically-lock-rotation-axis-not-working/476455 "2020-12-27T16:35:30Z")
Hi! I’m trying to lock the physics rotation axis programmatically using c++. Here’s my code I’m using (exposed to and called from blueprints), but it’s not working: void UUtility::SetRotationAxisLock(UPrimitiveCompone… --- ## [Physics asset constraints doesn't seem to work properly in later versions](https://forums.unrealengine.com/t/physics-asset-constraints-doesnt-seem-to-work-properly-in-later-versions/457317)
**Author:** [@anonymous\_user\_f9550272](https://forums.unrealengine.com/u/anonymous_user_f9550272)\ **Replies:** 2\ **Last updated:** [November 26, 2019, 3:55pm UTC](https://forums.unrealengine.com/t/physics-asset-constraints-doesnt-seem-to-work-properly-in-later-versions/457317 "2019-11-26T15:55:04Z")
Hello community. I discovered a problem with constraints in physics assets, specificly limited ones. It seems like in later versions of the engine (4.21+ from Launcher) you can’t set up limits on constraints reseting it… --- ## [Physics constraint rotation also rotates the default position of the bone](https://forums.unrealengine.com/t/physics-constraint-rotation-also-rotates-the-default-position-of-the-bone/430878)
**Author:** [@\_DySands](https://forums.unrealengine.com/u/_DySands)\ **Replies:** 6\ **Last updated:** [October 30, 2019, 10:27pm UTC](https://forums.unrealengine.com/t/physics-constraint-rotation-also-rotates-the-default-position-of-the-bone/430878 "2019-10-30T22:27:21Z")
I’ve been scratching my head around this issue for hours, what i have been trying to accomplish is get my car door to rotate using physx constraints but when the limit is set to for example 30, it goes 15 degrees into th… --- ## [スケルタルメッシュに物理アセットを設定し、一部だけを物理制御に切り替えるとボーンの位置がおかしくなる。](https://forums.unrealengine.com/t/topic/454833)
**Author:** [@akiame9999](https://forums.unrealengine.com/u/akiame9999)\ **Replies:** 0\ **Last updated:** [September 4, 2019, 2:02pm UTC](https://forums.unrealengine.com/t/topic/454833 "2019-09-04T14:02:30Z")
最近UE4を勉強し始めた初心者です。物理アセットについて詳しい方がいらっしゃいましたら、お力を貸していただきたいです。 よろしくお願いします。 人型のモデルに物理アセットを設定し、シミュレーションでラグドールのように倒れさせることはできました。 しかし、髪や胸、服などの揺れ部分だけを物理で動かすために、対応するボディの設定を「Simulated」に変更すると、 一部のボーンが元の場所とは全然違う場所にひっついた状態で物理動作をし… --- ## [Physics Constraint Vehicle - Self-Righting but able to Yaw (Twist)](https://forums.unrealengine.com/t/physics-constraint-vehicle-self-righting-but-able-to-yaw-twist/453269)
**Author:** [@Pyramas](https://forums.unrealengine.com/u/Pyramas)\ **Replies:** 0\ **Last updated:** [August 2, 2019, 9:12pm UTC](https://forums.unrealengine.com/t/physics-constraint-vehicle-self-righting-but-able-to-yaw-twist/453269 "2019-08-02T21:12:48Z")
Hello, I’m wondering if someone can help me out with a little problem I can’t seem to resolve. I’m trying to create an airship or a blimp that’s physics enabled, but will always try to keep itself oriented horizontally … --- ## [\[Bug report\] Constraint profile problem](https://forums.unrealengine.com/t/bug-report-constraint-profile-problem/453240)
**Author:** [@X\_Starter\_X](https://forums.unrealengine.com/u/X_Starter_X)\ **Replies:** 1\ **Last updated:** [August 2, 2019, 7:53pm UTC](https://forums.unrealengine.com/t/bug-report-constraint-profile-problem/453240 "2019-08-02T19:53:25Z")
I tried to make the dismemberment system of the characters in my project. But I have a problem with the constraints profile. I used Set Constraint Profile for bones of my skeletal mesh. But it not works. I was very surp… --- ## [Can I Reset a Constraint After it has been Broken?](https://forums.unrealengine.com/t/can-i-reset-a-constraint-after-it-has-been-broken/282764)
**Author:** [@Heisenburger](https://forums.unrealengine.com/u/Heisenburger)\ **Replies:** 4\ **Last updated:** [December 6, 2018, 2:49am UTC](https://forums.unrealengine.com/t/can-i-reset-a-constraint-after-it-has-been-broken/282764 "2018-12-06T02:49:09Z")
Is it possible to reset a physics constraint after it has been broken? --- ## [No joint created - warning](https://forums.unrealengine.com/t/no-joint-created-warning/373921)
**Author:** [@anonymous\_user\_0a4b48b4](https://forums.unrealengine.com/u/anonymous_user_0a4b48b4)\ **Replies:** 9\ **Last updated:** [November 6, 2018, 11:33pm UTC](https://forums.unrealengine.com/t/no-joint-created-warning/373921 "2018-11-06T23:33:49Z")
Hello, I’m getting the warning Constraint “CharacterClass” attempting to create a joint between two actors in different scenes. No joint created. What does it mean and how I can remove this warning? When I remove th… --- ## [Soft constraint to simulate gravity well](https://forums.unrealengine.com/t/soft-constraint-to-simulate-gravity-well/415842)
**Author:** [@theonecalledtom](https://forums.unrealengine.com/u/theonecalledtom)\ **Replies:** 5\ **Last updated:** [June 21, 2018, 4:15pm UTC](https://forums.unrealengine.com/t/soft-constraint-to-simulate-gravity-well/415842 "2018-06-21T16:15:42Z")
Looking for help with physics constraints. I’m trying to make a constraint behave in the same way as linear / angular damping only wrt a rotating body (planet). Not looking for real physics here, just getting my player … --- ## [Changing material of black bars? (Anyone?)](https://forums.unrealengine.com/t/changing-material-of-black-bars-anyone/427718)
**Author:** [@Btoop](https://forums.unrealengine.com/u/Btoop)\ **Replies:** 0\ **Last updated:** [June 19, 2018, 4:51pm UTC](https://forums.unrealengine.com/t/changing-material-of-black-bars-anyone/427718 "2018-06-19T16:51:16Z")
I’m currently using a orthographic camera with constrained aspect ratio (which causes black bars) and I’m trying to figure out how to change the colour/material of these black bars. I’ve read here (Aspect ratios and bla… --- ## [Why constraint doesn't work?](https://forums.unrealengine.com/t/why-constraint-doesnt-work/425362)
**Author:** [@Saiel](https://forums.unrealengine.com/u/Saiel)\ **Replies:** 0\ **Last updated:** [May 17, 2018, 7:35pm UTC](https://forums.unrealengine.com/t/why-constraint-doesnt-work/425362 "2018-05-17T19:35:06Z")
Hello. I’m working on a builder project (like LEGO) and there’s a problem: a constraint doesn’t affect its components, when one of them attached to other component (left). On the right - other components attached to thi… --- ## [UPhysicsConstraintComponent SetPositionTarget doesnt work](https://forums.unrealengine.com/t/uphysicsconstraintcomponent-setpositiontarget-doesnt-work/406839)
**Author:** [@RDaneelOlivaw](https://forums.unrealengine.com/u/RDaneelOlivaw)\ **Replies:** 0\ **Last updated:** [October 12, 2017, 10:19am UTC](https://forums.unrealengine.com/t/uphysicsconstraintcomponent-setpositiontarget-doesnt-work/406839 "2017-10-12T10:19:41Z")
It seems that when calling SetLinearVelocityTarget() works on Runtime, but for some reason the function SetLinearPositionTarget doesnt work when changed. Why is that? Whats the procedure to be able to change the Position… --- ## [Constrain or attach 1 child object to 2 parents?](https://forums.unrealengine.com/t/constrain-or-attach-1-child-object-to-2-parents/313104)
**Author:** [@jmalaska](https://forums.unrealengine.com/u/jmalaska)\ **Replies:** 2\ **Last updated:** [March 30, 2015, 4:46pm UTC](https://forums.unrealengine.com/t/constrain-or-attach-1-child-object-to-2-parents/313104 "2015-03-30T16:46:54Z")
make an object with 2 actor references called mom and dad, and set their values to the objects you want to follow. onEventTick, use IsValid to check if they are both valid, use getActorLocation on each, lerp between tho… --- ## [Disable and Enable Physics Constraint in Blueprints](https://forums.unrealengine.com/t/disable-and-enable-physics-constraint-in-blueprints/303560)
**Author:** [@bzxo](https://forums.unrealengine.com/u/bzxo)\ **Replies:** 2\ **Last updated:** [May 25, 2017, 1:44am UTC](https://forums.unrealengine.com/t/disable-and-enable-physics-constraint-in-blueprints/303560 "2017-05-25T01:44:08Z")
Is it possible to simply disable a constraint through Blueprints and re-enable it at a later point, without breaking it? Or is it possible to re-attach a broken constraint, without having to set its params again? --- ## ["Break Constraint" function in blueprint disappered?](https://forums.unrealengine.com/t/break-constraint-function-in-blueprint-disappered/394083)
**Author:** [@emperor\_katax](https://forums.unrealengine.com/u/emperor_katax)\ **Replies:** 0\ **Last updated:** [May 20, 2017, 4:48am UTC](https://forums.unrealengine.com/t/break-constraint-function-in-blueprint-disappered/394083 "2017-05-20T04:48:52Z")
“Break Constraint” is disappeared from blueprint. Please check “Unreal Engine Physics Essentials - ISBN: 978-1-78439-490-5” - last page of chapter 4 . Is there any replacement for this? --- ## [Blueprint: Getting an object to LOOK at another object](https://forums.unrealengine.com/t/blueprint-getting-an-object-to-look-at-another-object/363332)
**Author:** [@pdcsky](https://forums.unrealengine.com/u/pdcsky)\ **Replies:** 5\ **Last updated:** [April 25, 2017, 9:10pm UTC](https://forums.unrealengine.com/t/blueprint-getting-an-object-to-look-at-another-object/363332 "2017-04-25T21:10:55Z")
I’m trying to create a pair of eyes that will look at an object whenever it moves. In 3ds max this is quite easy to accomplish by simply giving the eyes a “Look at Constraint” Is there such a function in UE4? [Next page](https://forums.unrealengine.com/tag/constraint/1937.md?match_all_tags=true&page=1&tags%5B%5D=constraint)