How to properly #include classes from the engine?

FBryant87 · May 16, 2024, 2:07pm

I’m trying to reference a core PCG related class in my code, but if I add the following include it can’t find it:

#include "PCGPoint.h"

I’m confused as to how this project is able to successfully reference core engine classes like this?

Has that project done something special to make it possible?

Extrone · May 16, 2024, 2:18pm

You need to add “PCG” module to the Dependencies in your build.cs file

You can see it here in the project you linked :

github.com

spood/PCGPathfinding/blob/main/Source/PCGTest52/PCGTest52.Build.cs

// Copyright Epic Games, Inc. All Rights Reserved.

using UnrealBuildTool;

public class PCGTest52 : ModuleRules
{
	public PCGTest52(ReadOnlyTargetRules Target) : base(Target)
	{
		PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
	
		PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "PCG" });

		PrivateDependencyModuleNames.AddRange(new string[] {  });

		// Uncomment if you are using Slate UI
		// PrivateDependencyModuleNames.AddRange(new string[] { "Slate", "SlateCore" });
		
		// Uncomment if you are using online features
		// PrivateDependencyModuleNames.Add("OnlineSubsystem");

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FBryant87 · May 16, 2024, 2:24pm

Thanks for this, I have added “PCG” to the list of PublicDependencyModuleNames in the Build.cs, however I’ve yet to see any change in the result.

I’ve tried building and rebuilding, is there something I need to do to get it to load all the module files?

I was hoping to see them appear in the ‘External Dependencies’ folder, but this is not the case yet