DoN's 3D-Pathfinding / Flying-AI system (with full source!)

[VSZ]

[MENTION=50574]SaOk[/MENTION] - Can you turn off "Draw Debug Volumes" on the Fly To node? The crash is caused by trying to render a debug volume which doesn't exist, so turning off DrawDebugVolumes will resolve the crash for now without any code changes.

Fix is easy though, so I'll bundle it up with the other changes and submit to the marketplace after more feedback comes in.

[SaOk]

Sure, also using the new FlyTo. So far no problems anymore. Thanks again for making this. Had been waiting ways to do air pathfinding. Was using splines but this is much better. Cant wait to create some proper alien drone to use with this.

[VSZ]

Sure, also using the new FlyTo. So far no problems anymore. Thanks again for making this. Had been waiting ways to do air pathfinding. Was using splines but this is much better. Cant wait to create some proper alien drone to use with this.

Great to hear Feel free to post any videos of your stuff in action!

[VSZ]

New thread!

I've created a new thread in the marketplace section seeing as this plugin has been officially released.

https://forums.unrealengine.com/show...Support-Thread

Post any new feedback/issues/etc in the new thread

[Andrew Ferraro]

love this! i have a problem with the 4.15 when i place a Don Navigation Manager in the level and build for windows 64 the game crash at begin ,
when i delete don nav from the level and build again it work perfectly, there are some fixes for that? thank you !

[VSZ]

love this! i have a problem with the 4.15 when i place a Don Navigation Manager in the level and build for windows 64 the game crash at begin ,
when i delete don nav from the level and build again it work perfectly, there are some fixes for that? thank you !

Can you try out the latest Github version? It has bugfixes that haven't been submitted to the marketplace yet.

Binaries are included in the github version for your convenience in case you have a blueprint-only project.

[Eism]

Hi, VSZ. Need some help from you, is there any possibility to ignore classes of actors but not specific actors on the map through pathfinding?

[jvukovich]

How do you get the plugin working with a custom-source built UE4 engine? I am using 4.15.2 and put the plugin source into my engine source's .\Engine\Plugins\ folder and re-generated the project files. However, I get this when attempting to compile:

C:\Dev\UE4\4.15.2\Engine\Plugins\DonAINavigation\Source\DonAINavigation\Classes\Multithreading\DonNavigationWorker.cpp(1): error: Expected DonNavigationWorker.h to be first header included.
C:\Dev\UE4\4.15.2\Engine\Plugins\DonAINavigation\Source\DonAINavigation\Private\DonNavigationHelper.cpp(1): error: Expected DonNavigationHelper.h to be first header included.
C:\Dev\UE4\4.15.2\Engine\Plugins\DonAINavigation\Source\DonAINavigation\Private\DonNavigationManager.cpp(1): error: Expected DonNavigationManager.h to be first header included.
C:\Dev\UE4\4.15.2\Engine\Plugins\DonAINavigation\Source\DonAINavigation\Private\DonNavigationManagerUnbound.cpp(1): error: Expected DonNavigationManagerUnbound.h to be first header included.
C:\Dev\UE4\4.15.2\Engine\Plugins\DonAINavigation\Source\DonAINavigation\Private\DonNavigatorInterface.cpp(1): error: Expected DonNavigatorInterface.h to be first header included.
C:\Dev\UE4\4.15.2\Engine\Plugins\DonAINavigation\Source\DonAINavigation\Private\BehaviorTree\BTTask_FlyTo.cpp(1): error: Expected BTTask_FlyTo.h to be first header included.
C:\Dev\UE4\4.15.2\Engine\Plugins\DonAINavigation\Source\DonAINavigation\Private\Legacy\DEPRECATED_DoNNavigationVolumeComponent.cpp(1): error: Expected DEPRECATED_DoNNavigationVolumeComponent.h to be first header included.
C:\Dev\UE4\4.15.2\Engine\Plugins\DonAINavigation\Source\DonAINavigation\Private\Legacy\DEPRECATED_VolumeAdaptiveBuilder.cpp(1): error: Expected DEPRECATED_VolumeAdaptiveBuilder.h to be first header included.

[Davixe]

How do you get the plugin working with a custom-source built UE4 engine? I am using 4.15.2 and put the plugin source into my engine source's .\Engine\Plugins\ folder and re-generated the project files. However, I get this when attempting to compile:

Got the same question [MENTION=14603]VSZ[/MENTION]

PD: Amazing Work!

[Ryan Darcey]

Hi, VSZ. Need some help from you, is there any possibility to ignore classes of actors but not specific actors on the map through pathfinding?

You can update the "Obstacle Query Channels" on the Nav Manager to only check actors that fit the specified collision profiles. Would that work for yoU?

[Ryan Darcey]

How do you get the plugin working with a custom-source built UE4 engine? I am using 4.15.2 and put the plugin source into my engine source's .\Engine\Plugins\ folder and re-generated the project files. However, I get this when attempting to compile:

I build with custom engine from source and threw my plugin in within my project:

//depot/Prizefighter/Plugins/DonAINavigation

Then, make sure your build.cs file looks something like this:

// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.

using UnrealBuildTool;

public class Prizefighter : ModuleRules
{
	public Prizefighter(TargetInfo Target)
	{
		PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "GameplayTasks" });

		// DoN Navigation 
		PrivateDependencyModuleNames.AddRange(new string[] { "DonAINavigation" });
		PrivateIncludePathModuleNames.AddRange(new string[] { "DonAINavigation" });
		PublicIncludePaths.AddRange(new string[] { "DonAINavigation/Public", "DonAINavigation/Classes" });
	}
}

Then, make sure you generate project files again. I think that's all you need to do? It's been a while since I set it up

[VSZ]

[MENTION=16186]Davixe[/MENTION]
Hey, this must be something to do with 4.15's "Include What You Use"compile optimization.

For now, try disabling IYWU for this plugin by going toDonAINavigation.Build.cs and setting this flag there:
bEnforceIWYU= false;

Btw, I don't always receive a mail notification for posts; posting in the main support thread is easier for me to find

PS: 4.16 support incoming, needs some code changes first!

[VSZ]

4.16 version available!

Check out this post on the main support thread!

~~~

[jvukovich]

rcdarcey: thanks! Got it working.

[jvukovich]

Crash, I think when the pathfinding actor was destroyed:

[2017.07.18-03.46.26:892][953]LogWindows:Error: UE4Editor-CoreUObject.dll!FWeakObjectPtr::IsValid() [c:\dev\ue4\4.15.2\engine\source\runtime\coreuobject\private\uobject\weakobjectptr.cpp:48]
[2017.07.18-03.46.26:892][953]LogWindows:Error: UE4Editor-DonAINavigation.dll!UBTTask_FlyTo::TaskMemoryFromGenericPayload() [c:\dev\ascentroid\plugins\donainavigation\source\donainavigation\private\behaviortree\bttask_flyto.cpp:147]
[2017.07.18-03.46.26:892][953]LogWindows:Error: UE4Editor-DonAINavigation.dll!UBTTask_FlyTo::Pathfinding_OnFinish() [c:\dev\ascentroid\plugins\donainavigation\source\donainavigation\private\behaviortree\bttask_flyto.cpp:167]

Should (bttask_flyto.cpp line 147):

auto ownerComp = (payload && payload->OwnerComp.IsValid()) ? payload->OwnerComp.Get() : NULL;

Be?

auto ownerComp = (payload && payload->OwnerComp != NULL && payload->OwnerComp.IsValid()) ? payload->OwnerComp.Get() : NULL;

Thanks!!