# \#run-behavior **URL:** https://forums.unrealengine.com/tag/run-behavior/10129.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Crash and weird behavior when using Buoyancy with a child actor ](https://forums.unrealengine.com/t/crash-and-weird-behavior-when-using-buoyancy-with-a-child-actor/2325726)
**Author:** [@Scaranova](https://forums.unrealengine.com/u/Scaranova)\ **Replies:** 4\ **Last updated:** [February 11, 2025, 6:39pm UTC](https://forums.unrealengine.com/t/crash-and-weird-behavior-when-using-buoyancy-with-a-child-actor/2325726 "2025-02-11T18:39:03Z")
Hello! First of all, thank you very much for taking your time for my problem! I am new to Unreal Engine, I have some notions, enough to make a clean game, but not yet in everything that is multiplayer etc … So I want t… --- ## [Mixamo animations not working properly](https://forums.unrealengine.com/t/mixamo-animations-not-working-properly/420804)
**Author:** [@PyriteConjurer](https://forums.unrealengine.com/u/PyriteConjurer)\ **Replies:** 4\ **Last updated:** [September 19, 2024, 7:32am UTC](https://forums.unrealengine.com/t/mixamo-animations-not-working-properly/420804 "2024-09-19T07:32:48Z")
I’m very new to using UE4, and mixamo so bear with me please. I believe the solution is simple but I can’t find it. I have imported the animations for a character I downloaded, and I created the blend space for proper wa… --- ## [New third person default project, nothing has been changed, after running the level, the character will run for a period of time will be stalled, how to solve this problem?](https://forums.unrealengine.com/t/new-third-person-default-project-nothing-has-been-changed-after-running-the-level-the-character-will-run-for-a-period-of-time-will-be-stalled-how-to-solve-this-problem/483393)
**Author:** [@Anonymous\_c20db9bf9f3379c8258062313769e415](https://forums.unrealengine.com/u/Anonymous_c20db9bf9f3379c8258062313769e415)\ **Replies:** 0\ **Last updated:** [May 14, 2021, 7:10pm UTC](https://forums.unrealengine.com/t/new-third-person-default-project-nothing-has-been-changed-after-running-the-level-the-character-will-run-for-a-period-of-time-will-be-stalled-how-to-solve-this-problem/483393 "2021-05-14T19:10:03Z")
New third person default project, nothing has been changed, after running the level, the character will run for a period of time will be stalled, how to solve this problem? --- ## [Switch behavior trees while active](https://forums.unrealengine.com/t/switch-behavior-trees-while-active/440327)
**Author:** [@TuXsOrDs](https://forums.unrealengine.com/u/TuXsOrDs)\ **Replies:** 5\ **Last updated:** [November 16, 2023, 10:33pm UTC](https://forums.unrealengine.com/t/switch-behavior-trees-while-active/440327 "2023-11-16T22:33:29Z")
I have my AI run one behavior tree by default and that behavior tree contains everything to act as a normal citizen. This behavior tree also checks to see at any time to see if the NPC has changed to a “Guard” or a “Inf… --- ## [How to change Behavior Tree at runtime?](https://forums.unrealengine.com/t/how-to-change-behavior-tree-at-runtime/765825)
**Author:** [@Ad04a](https://forums.unrealengine.com/u/Ad04a)\ **Replies:** 1\ **Last updated:** [February 7, 2023, 7:36pm UTC](https://forums.unrealengine.com/t/how-to-change-behavior-tree-at-runtime/765825 "2023-02-07T19:36:19Z")
I am currently developing kind of city builder on c++. I am trying to recreate MC mod - MineColonies. I have an AI controlled characters with profession. Every profession needs to do different things. So I am wondering i… --- ## [Animation Trouble in Play Mode](https://forums.unrealengine.com/t/animation-trouble-in-play-mode/437415)
**Author:** [@Skywalker0828](https://forums.unrealengine.com/u/Skywalker0828)\ **Replies:** 4\ **Last updated:** [December 19, 2022, 9:14pm UTC](https://forums.unrealengine.com/t/animation-trouble-in-play-mode/437415 "2022-12-19T21:14:35Z")
I have been working on getting custom animations into UE4, and have figure it out for the most part. I’m having difficulty with the running animation though. In the Animation Blueprints, I created the blend space for idl… --- ## [\[SOLVED\] Scene-\>GetWorld(): Function UActorComponent::GetWorld has no address, possibly due to compiler optimizations](https://forums.unrealengine.com/t/solved-scene-getworld-function-uactorcomponent-getworld-has-no-address-possibly-due-to-compiler-optimizations/403629)
**Author:** [@anonymous\_user\_b7617d6c](https://forums.unrealengine.com/u/anonymous_user_b7617d6c)\ **Replies:** 5\ **Last updated:** [May 6, 2022, 10:47am UTC](https://forums.unrealengine.com/t/solved-scene-getworld-function-uactorcomponent-getworld-has-no-address-possibly-due-to-compiler-optimizations/403629 "2022-05-06T10:47:02Z")
Running into this error when running PIE mode. This is a project from the PACKT book Unreal Engine 4.X By Example. I’m working inside of UE 4.17.1, and it’s quite obvious to me that this book was written for a fairly ear… --- ## [Argh... can't run the UE on my MacBook Pro](https://forums.unrealengine.com/t/argh-cant-run-the-ue-on-my-macbook-pro/478749)
**Author:** [@anonymous\_user\_0713209d](https://forums.unrealengine.com/u/anonymous_user_0713209d)\ **Replies:** 2\ **Last updated:** [February 1, 2022, 3:23am UTC](https://forums.unrealengine.com/t/argh-cant-run-the-ue-on-my-macbook-pro/478749 "2022-02-01T03:23:01Z")
Argh… can’t run the UE on my MacBook Pro, this message keeps on coming and I don’t know what to do… --- ## [Turning Side Scroller Character?](https://forums.unrealengine.com/t/turning-side-scroller-character/490471)
**Author:** [@Mint\_Gorillaz](https://forums.unrealengine.com/u/Mint_Gorillaz)\ **Replies:** 1\ **Last updated:** [November 1, 2021, 10:27am UTC](https://forums.unrealengine.com/t/turning-side-scroller-character/490471 "2021-11-01T10:27:17Z")
The animation and rotation is the same running forwards or backwards. How can I make the character face left and turn when left key is pressed? Cheers --- ## [Low resolution after pakaging](https://forums.unrealengine.com/t/low-resolution-after-pakaging/487408)
**Author:** [@AEROKnight0210](https://forums.unrealengine.com/u/AEROKnight0210)\ **Replies:** 0\ **Last updated:** [August 13, 2021, 6:12pm UTC](https://forums.unrealengine.com/t/low-resolution-after-pakaging/487408 "2021-08-13T18:12:49Z")
When I pakaged the game (shipping) and run the game for the first time, the initial resolution in set really low. After when I set screen resoution in game, it would solve the problem. But I want to set the screen resolu… --- ## [I need my character to run forever. Without using Event Tick!](https://forums.unrealengine.com/t/i-need-my-character-to-run-forever-without-using-event-tick/484725)
**Author:** [@MrBortot](https://forums.unrealengine.com/u/MrBortot)\ **Replies:** 1\ **Last updated:** [June 11, 2021, 4:01pm UTC](https://forums.unrealengine.com/t/i-need-my-character-to-run-forever-without-using-event-tick/484725 "2021-06-11T16:01:31Z")
Im making an endless runner but i need to do stuff before the character starts running, and it needs to be in the same game mode. So how do i do it without the event tick? --- ## [First time running UE4 gives me an error about xCode](https://forums.unrealengine.com/t/first-time-running-ue4-gives-me-an-error-about-xcode/482563)
**Author:** [@AlyxW](https://forums.unrealengine.com/u/AlyxW)\ **Replies:** 0\ **Last updated:** [April 28, 2021, 12:39am UTC](https://forums.unrealengine.com/t/first-time-running-ue4-gives-me-an-error-about-xcode/482563 "2021-04-28T00:39:48Z")
I get this error when attempting to run UE4, but i have Xcode installed and have worked with directly with it before, does someone know what steps i could take to resolve this (Or somewhere that would give me faster supp… --- ## [AI Perception Issues / Herd-Sensing](https://forums.unrealengine.com/t/ai-perception-issues-herd-sensing/481452)
**Author:** [@anonymous\_user\_a8284221](https://forums.unrealengine.com/u/anonymous_user_a8284221)\ **Replies:** 2\ **Last updated:** [April 10, 2021, 3:52pm UTC](https://forums.unrealengine.com/t/ai-perception-issues-herd-sensing/481452 "2021-04-10T15:52:03Z")
So, I’ve got a behavior tree set up, it works when there is a single NPC using it. It can find a player within sensing range, chase them, stop short and attack, and if there’s nobody in range it moves to investigate and… --- ## [LandMass River brush tool?](https://forums.unrealengine.com/t/landmass-river-brush-tool/481380)
**Author:** [@anonymous\_user\_b0e4f2c51](https://forums.unrealengine.com/u/anonymous_user_b0e4f2c51)\ **Replies:** 0\ **Last updated:** [April 4, 2021, 10:41pm UTC](https://forums.unrealengine.com/t/landmass-river-brush-tool/481380 "2021-04-04T22:41:00Z")
Hi all, So I started using the Landmass plugins today, and I came across an interesting problem. The Custom river brush only shows the water if the spline is running uphill. Now call me crazy, but I thought rivers ran … --- ## [Behavior Tree Flashing/Looping](https://forums.unrealengine.com/t/behavior-tree-flashing-looping/475513)
**Author:** [@anonymous\_user\_210ee33b1](https://forums.unrealengine.com/u/anonymous_user_210ee33b1)\ **Replies:** 1\ **Last updated:** [March 22, 2021, 4:18am UTC](https://forums.unrealengine.com/t/behavior-tree-flashing-looping/475513 "2021-03-22T04:18:22Z")
I’ve recently experienced this problem with my behavior tree where it seems to be running through all of the behaviors rapid-fire without actually performing them. This only ever seems to occur when the third behavior is… --- ## [Walk to run without pressing anything](https://forums.unrealengine.com/t/walk-to-run-without-pressing-anything/480091)
**Author:** [@anonymous\_user\_276db39b1](https://forums.unrealengine.com/u/anonymous_user_276db39b1)\ **Replies:** 1\ **Last updated:** [March 13, 2021, 2:45pm UTC](https://forums.unrealengine.com/t/walk-to-run-without-pressing-anything/480091 "2021-03-13T14:45:28Z")
I want my character to walk fast then over a few seconds of walking to run and then after a few more seconds to sprint. So to accelerate without a button, just overtime. A bit like Okami or Nier Automata. --- ## [Behavior Tree stops before it starts](https://forums.unrealengine.com/t/behavior-tree-stops-before-it-starts/480001)
**Author:** [@devlyn811](https://forums.unrealengine.com/u/devlyn811)\ **Replies:** 1\ **Last updated:** [March 12, 2021, 11:46am UTC](https://forums.unrealengine.com/t/behavior-tree-stops-before-it-starts/480001 "2021-03-12T11:46:30Z")
Hello everybody, I have a strange issue whereby I have a behavior tree that stops before it actually starts, hanging the AI player up. It happens almost 100% of the time, but only with this one particular BT. The stran… --- ## [How did I get this to work? Control Scheme](https://forums.unrealengine.com/t/how-did-i-get-this-to-work-control-scheme/479811)
**Author:** [@Bullseye8841](https://forums.unrealengine.com/u/Bullseye8841)\ **Replies:** 0\ **Last updated:** [March 5, 2021, 9:19pm UTC](https://forums.unrealengine.com/t/how-did-i-get-this-to-work-control-scheme/479811 "2021-03-05T21:19:13Z")
Hello, I know this might be too broad, but I could really use the help understanding it. I’m working on a survival horror tank control scheme, and it’s working. The problem is, I don’t know how! I started this months a… --- ## [Packaged Game Fails To Run - Missing Megascans](https://forums.unrealengine.com/t/packaged-game-fails-to-run-missing-megascans/462129)
**Author:** [@ryantow](https://forums.unrealengine.com/u/ryantow)\ **Replies:** 1\ **Last updated:** [March 4, 2021, 12:09pm UTC](https://forums.unrealengine.com/t/packaged-game-fails-to-run-missing-megascans/462129 "2021-03-04T12:09:51Z")
Project is packaging successfully - but when I run the .exe - it fails. Upon checking the logs, this is the culprit: LogPluginManager: Error: Unable to load plugin ‘MegascansPlugin’. Aborting. Megascans is installed a… --- ## [What is the best OS for UnrealEngine to operate on?](https://forums.unrealengine.com/t/what-is-the-best-os-for-unrealengine-to-operate-on/479569)
**Author:** [@Galactic\_PlayzYT](https://forums.unrealengine.com/u/Galactic_PlayzYT)\ **Replies:** 4\ **Last updated:** [March 3, 2021, 1:16am UTC](https://forums.unrealengine.com/t/what-is-the-best-os-for-unrealengine-to-operate-on/479569 "2021-03-03T01:16:46Z")
I just wanted to know the best os to run UE4 on --- ## [Behavior Tree: How to find an object](https://forums.unrealengine.com/t/behavior-tree-how-to-find-an-object/478416)
**Author:** [@Garousome](https://forums.unrealengine.com/u/Garousome)\ **Replies:** 0\ **Last updated:** [February 8, 2021, 12:48am UTC](https://forums.unrealengine.com/t/behavior-tree-how-to-find-an-object/478416 "2021-02-08T00:48:54Z")
I currently have a task that finds the player’s location and then moves the ai character to the player. Instead, I want the ai to find an object. The static mesh is called TailSteakReal. How would I change this so in… --- ## [Why is my UE4 running slow on my 2018 macbook Pro?](https://forums.unrealengine.com/t/why-is-my-ue4-running-slow-on-my-2018-macbook-pro/448212)
**Author:** [@anonymous\_user\_16f04d971](https://forums.unrealengine.com/u/anonymous_user_16f04d971)\ **Replies:** 7\ **Last updated:** [December 25, 2020, 5:10pm UTC](https://forums.unrealengine.com/t/why-is-my-ue4-running-slow-on-my-2018-macbook-pro/448212 "2020-12-25T17:10:39Z")
I have been trying to use ue4 on my mac for days and it had either been running really slow and causing my mac to run slow or in some cases, ue4 crashes and sometimes even my entire computer crashes. I understand it is n… --- ## [Can I make my game an X86\_64 on Linux instead of an .Sh file to make it easier to run since almost every distros has a different way of launching.sh](https://forums.unrealengine.com/t/can-i-make-my-game-an-x86-64-on-linux-instead-of-an-sh-file-to-make-it-easier-to-run-since-almost-every-distros-has-a-different-way-of-launching-sh/467629)
**Author:** [@TuxTheAstronaut](https://forums.unrealengine.com/u/TuxTheAstronaut)\ **Replies:** 1\ **Last updated:** [November 26, 2020, 8:25pm UTC](https://forums.unrealengine.com/t/can-i-make-my-game-an-x86-64-on-linux-instead-of-an-sh-file-to-make-it-easier-to-run-since-almost-every-distros-has-a-different-way-of-launching-sh/467629 "2020-11-26T20:25:44Z")
Currently Ue4 packages projects under Linux by making a .sh file but this file type seems to have a different way of launching on every distribution I wondering if there is a way to package my project as an x86\_64 like h… --- ## [What would be the best way to flag a sudden change in movement direction?](https://forums.unrealengine.com/t/what-would-be-the-best-way-to-flag-a-sudden-change-in-movement-direction/474648)
**Author:** [@Re4verbot](https://forums.unrealengine.com/u/Re4verbot)\ **Replies:** 0\ **Last updated:** [November 17, 2020, 11:43pm UTC](https://forums.unrealengine.com/t/what-would-be-the-best-way-to-flag-a-sudden-change-in-movement-direction/474648 "2020-11-17T23:43:44Z")
I need some help in how to script this, or at least, the values I need to get to pull this off. What I want to do is make it so that if the player is running forward and they decide all of a sudden to run backwards and … --- ## [Is there a smart way to get your AI to run out of "danger circles"?](https://forums.unrealengine.com/t/is-there-a-smart-way-to-get-your-ai-to-run-out-of-danger-circles/473800)
**Author:** [@BismarckZero](https://forums.unrealengine.com/u/BismarckZero)\ **Replies:** 0\ **Last updated:** [November 2, 2020, 1:14am UTC](https://forums.unrealengine.com/t/is-there-a-smart-way-to-get-your-ai-to-run-out-of-danger-circles/473800 "2020-11-02T01:14:03Z")
In my game, there will be bombs randomly flying down from the sky and they will project a danger circle onto the ground indicating they are about to fall down on that spot in 5 seconds. I’m trying to implement my AI to i… --- ## [Unreal application freezes on PC without display connected](https://forums.unrealengine.com/t/unreal-application-freezes-on-pc-without-display-connected/467462)
**Author:** [@avemaximus89](https://forums.unrealengine.com/u/avemaximus89)\ **Replies:** 3\ **Last updated:** [October 27, 2020, 8:33am UTC](https://forums.unrealengine.com/t/unreal-application-freezes-on-pc-without-display-connected/467462 "2020-10-27T08:33:34Z")
Hello ! I met problem running unreal application on remote virtual machine (VM), running on Windows 10. The essence of the problem is remote computer have no display, while i connected to VM, via windows Remote Desktop… --- ## [Cannot run UE4 on Windows 10 cloud computer](https://forums.unrealengine.com/t/cannot-run-ue4-on-windows-10-cloud-computer/472884)
**Author:** [@anonymous\_user\_27a02072](https://forums.unrealengine.com/u/anonymous_user_27a02072)\ **Replies:** 1\ **Last updated:** [October 14, 2020, 6:20am UTC](https://forums.unrealengine.com/t/cannot-run-ue4-on-windows-10-cloud-computer/472884 "2020-10-14T06:20:54Z")
Hello! I’m having trouble running UE 4.24.1 (also tried 4.25.3) on a Windows 10 OS cloud computer via Paperspace Console and a Quadro P5000 card. UE hangs at 39% consistently, and when I first try to launch the program a… --- ## [Epic Games launcher won't open on MacOS Catalina on PC hackintosh](https://forums.unrealengine.com/t/epic-games-launcher-wont-open-on-macos-catalina-on-pc-hackintosh/462676)
**Author:** [@TheSubZer0](https://forums.unrealengine.com/u/TheSubZer0)\ **Replies:** 14\ **Last updated:** [October 6, 2020, 10:52pm UTC](https://forums.unrealengine.com/t/epic-games-launcher-wont-open-on-macos-catalina-on-pc-hackintosh/462676 "2020-10-06T22:52:30Z")
A few weeks ago I am trying to make the Epic Games launcher run on a computer other than an iMac, I want to open it on a normal PC running Mac OS Catalina with all installed drivers of 12gb of ram, GPU AMD Radeom 2gb and… --- ## [4.18 VR mode (editor) loads up as black. Running game in vr works though](https://forums.unrealengine.com/t/4-18-vr-mode-editor-loads-up-as-black-running-game-in-vr-works-though/409028)
**Author:** [@LukeBubb](https://forums.unrealengine.com/u/LukeBubb)\ **Replies:** 7\ **Last updated:** [September 23, 2020, 7:52am UTC](https://forums.unrealengine.com/t/4-18-vr-mode-editor-loads-up-as-black-running-game-in-vr-works-though/409028 "2020-09-23T07:52:36Z")
Hi there Having an issue, I just went to edit a scene and the VR editor comes up blank/black. If I run a game preview it works fine. Tried restarting but no luck. Have recently updated to 4.18. Any ideas? Thanks in a… --- ## [How can i keep running after jump with virtual bottons for android games?](https://forums.unrealengine.com/t/how-can-i-keep-running-after-jump-with-virtual-bottons-for-android-games/471138)
**Author:** [@Ninsora](https://forums.unrealengine.com/u/Ninsora)\ **Replies:** 5\ **Last updated:** [September 13, 2020, 4:46am UTC](https://forums.unrealengine.com/t/how-can-i-keep-running-after-jump-with-virtual-bottons-for-android-games/471138 "2020-09-13T04:46:42Z")
I made a simple 2d game for mobile device but I got a problem cause when i start running and press the virtual jump botton my character stop running and I have to released de botton and press it again to run. it works … [Next page](https://forums.unrealengine.com/tag/run-behavior/10129.md?match_all_tags=true&page=1&tags%5B%5D=run-behavior)