How do I spawn ThirdPersonCharacter with C++

Development Programming & Scripting Blueprint
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1

FActorSpawnParameters params;
params.bAllowDuringConstructionScript = true;
params.bDeferConstruction = false;
params.bNoFail = true;
params.Name = {};
params.ObjectFlags = EObjectFlags::RF_NoFlags;
params.OverrideLevel = nullptr;
params.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;
params.Template = nullptr;

TSubclassOf< class AStaticMeshActor > character = nullptr;
static ConstructorHelpers::FObjectFinder< UClass > found_something_object(TEXT("/Game/ThirdPersonBP/Blueprints/ThirdPersonCharacter.ThirdPersonCharacter_C"));
character = found_something_object.Object;
const FVector Location = { 0, 20, 0 };
const FRotator Rotation = FRotator(0, 0, 0);
auto something =
		GetWorld()->SpawnActor<AStaticMeshActor>	
	(character
		, Location
		, Rotation
		, params
		);

This code does not work. What is wrong?

2

Is there an error output or just does nothing in engine? Also, for reference, where are you calling this?

3

I called this from “void AMyActor::BeginPlay()”.
MYActor is located on the viewport in the UE editor.

But this crash on line 12.
there is no erroe message.
even could not to debug mode.

4

First issue is that you can only use ConstructorHelpers::FObjectFinder in a classes constructor see here:

Have a look through the links on that answer and if you need any more help let me know.

5

I want to use dynamic BluePrint loading and spawn it.
This is a new code.
But, It returned null at “character = bp->GeneratedClass;”.
What is wrong?

auto *clazz = StaticLoadObject(UObject::StaticClass(), nullptr, TEXT("/Game/ThirdPersonBP/Blueprints/ThirdPersonCharacter"));
if (clazz != NULL) {
	GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Green, TEXT("class exists!!!"));
	UBlueprint * bp = Cast<UBlueprint>(clazz);
	
	if (bp) {
		GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Green, TEXT("bp exists!!!"));
		auto character = bp->GeneratedClass;
		if (character != NULL) {
			FActorSpawnParameters params;
			params.bAllowDuringConstructionScript = true;
			params.bDeferConstruction = false;
			params.Name = { "test char" };
			params.ObjectFlags = EObjectFlags::RF_NoFlags;
			params.OverrideLevel = nullptr;
			params.Owner = this;
			params.Template = nullptr;

			const FVector Location = { 0, 20, 0 };
			const FRotator Rotation = FRotator(0, 0, 0);

			auto something =
				GetWorld()->SpawnActor<AStaticMeshActor>
				(character
					, Location
					, Rotation
					, params
					);
			if (something) {
				GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Green, TEXT("spawn succeed!!!"));
			}
			else {
				GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Red, TEXT("spawn failed!!!"));
			}
		}
		else {
			GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Red, TEXT("characer is NULL!!!"));
		}
	}
	else {
		GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Green, TEXT("bp does not exist!!!"));
	}
}
else {
	GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Red, TEXT("cls2 is NULL!!!"));
}
6

It works.
Succeeded by using “LoadClass” instead of “StaticLoadObject”.