Bug: Landscape Grass Takes Forever To Load

Development World Creation
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18

For those coming to this later and not skilled in c++. This is my solution. Create an actor, add it to the scene and assign a landscape which you want to spawn immediately.

You also NEED to add Landscape to your project.Build.cs file, otherwise it will fail to find proper libraries.

YourProject.build.cs

PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "Landscape"});)

LFLandscapeGrassHack.h

#pragma once

#include "CoreMinimal.h"
#include "LandscapeProxy.h"
#include "GameFramework/Actor.h"
#include "LandscapeGrassHack.generated.h"

UCLASS()
class YOURPROJECT_API ALandscapeGrassHack : public AActor
{
	GENERATED_BODY()
	
public:	
	// Sets default values for this actor's properties
	ALandscapeGrassHack();

	UPROPERTY()
	USceneComponent* Root;

	UPROPERTY(EditAnywhere)
	ALandscapeProxy* Landscape;

protected:
	virtual void BeginPlay() override;

	void UpdateGrass(ALandscapeProxy* LandscapeToUpdate);
};

LandscapeGrassHack.cpp

#include "LandscapeGrassHack.h"

ALandscapeGrassHack::ALandscapeGrassHack()
{
	PrimaryActorTick.bCanEverTick = false;	
	Root = CreateDefaultSubobject<USceneComponent>("Root");
	RootComponent = Root;
}

void ALandscapeGrassHack::BeginPlay()
{
	Super::BeginPlay();
	UpdateGrass(Landscape);
}

void ALandscapeGrassHack::UpdateGrass(ALandscapeProxy* LandscapeToUpdate)
{
	if(!IsValid(LandscapeToUpdate))
	{
		UE_LOG(LogTemp, Warning, TEXT("NO landscape has been assigned, cannot recreate grass"));
		return;
	}
	FOccluderVertexArray arr;
	LandscapeToUpdate->UpdateGrass(arr, true);
}
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