Objectfinder cannot find a blueprint

Development Programming & Scripting Blueprint
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1

I have a blueprint class extended from a c+= class called BaseProjectile

ABaseProjectile* NewProjectile;
static ConstructorHelpers::FObjectFinder<ABaseProjectile> BaseProjectileObj(TEXT("/Game/Projectile/BaseProjectile/Blueprints/BaseProjectileBP.BaseProjectileBP"));
	NewProjectile = BaseProjectileObj.Object;

But when I open the project, a warning shows that it couldn’t find the object.

I gen this when I copy the reference of the blueprint

Blueprint'/Game/Projectile/BaseProjectile/Blueprints/BaseProjectileBP.BaseProjectileBP'
2

Here is an example on how to get the CharacterBlueprint assigned to the GameMode.
Thats from the FirstPersonShooter Tutorial.

static ConstructorHelpers::FObjectFinder<UBlueprint> PlayerPawnObject(TEXT("Blueprint'/Game/Blueprints/Character_And_HUD/BP_SurvivalCharacter.BP_SurvivalCharacter'"));
	if (PlayerPawnObject.Object != NULL)
	{
		DefaultPawnClass = (UClass*)PlayerPawnObject.Object->GeneratedClass;
	}

I guess you need to change a bit of your code.
The ObjectFinder is Searching for UBlueprint and not for the ABaseProjectile.
And the rest of the line should be what the reference says.

(TEXT(“Blueprint’/Game/Projectile/BaseProjectile/Blueprints/BaseProjectileBP.BaseProjectileBP’”));

Note that the cast in the if will differ from yours, because the DefaultPawnClass is a UClass and your class is ABaseProjectile.

(: Hope that helps you.

3

Ok it helped. But it gives a pointer to the class. I just want the class name to spawn it later. How can I get the class?

CurrentProjectile = ABaseProjectile::StaticClass();
static ConstructorHelpers::FObjectFinder<UBlueprint> BaseProjectileObj(TEXT("Blueprint'/Game/Projectile/BaseProjectile/Blueprints/BaseProjectileBP.BaseProjectileBP'"));
if (BaseProjectileObj.Object != NULL)
{
	CurrentProjectile = Cast<ABaseProjectile>((UClass*)BaseProjectileObj.Object->GeneratedClass);

I guess it is done by using

NewProjectile->GetClass()
4

Isnt this working? :

CurrentProjectile = (ABaseProjectile*)BaseProjectileObj.Object->GeneratedClass;

You should be able to spawn this Variable somehow :open_mouth:

5

Nope that doesn’t work.

This works though

CurrentProjectile = (Cast<ABaseProjectile>((UClass*)BaseProjectileObj.Object->GeneratedClass))->GetClass();
6

I tried this

CurrentProjectile = (Cast<ABaseProjectile>(BaseProjectileObj.Object))->GetClass();

it also crashes the editor

7

CurrentProjectile = (Cast(BaseProjectileObj.Object->GeneratedClass)->GetClass());

Also crashing the editor. How can I get the class instead of the pointer?

8

Just to let you know why I am going to need to blueprint class, I am spawning the actor win the world.

GetWorld()->SpawnActor<ABaseProjectile>(CurrentProjectile, SpawnLocation, SpawnRotation);
9

I use this method:

// header

/** Stores reference to BP base character */
UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = BPClasses)
UClass* BaseCharacterBP;


// .cpp constructor

// Save reference to base character BP
static ConstructorHelpers::FObjectFinder<UClass> BaseCharacterBPClass(TEXT(/* ref */));

if (BaseCharacterBPClass.Object != NULL)
{
	BaseCharacterBP = BaseCharacterBPClass.Object;
}

Here I’m finding a character blueprint, but I assume it would work with all types of actors. Then I can call SpawnActor with no issues:

GetWorld()->SpawnActor<ABaseCharacter>(BaseCharacterBP);