Projectile Error

Development Programming & Scripting
1

I would like to start off by saying I converted my project from 4.11 to 4.12, and I am unable to build the project in VS due to an error created in a projectile class.

These are the two errors I am getting that reference the projectile class. As you can see the errors are complaining about line 14. I’ve googled the errors and haven’t really been able to come up with anything useful.

Error (active)		no instance of function template "FComponentHitSignature::__Internal_AddDynamic" matches the argument list	ProjectInfinite	c:\Perforce\GatewayEntertainment\ProjectInfinite 4.12\Source\ProjectInfinite\ProjectInfiniteProjectile.cpp	14	

Error	C2664	'void TBaseDynamicMulticastDelegate<FWeakObjectPtr,void,UPrimitiveComponent *,AActor *,UPrimitiveComponent *,FVector,const FHitResult &>::__Internal_AddDynamic<AProjectInfiniteProjectile>(UserClass *,void (__cdecl AProjectInfiniteProjectile::* )(UPrimitiveComponent *,AActor *,UPrimitiveComponent *,FVector,const FHitResult &),FName)': cannot convert argument 2 from 'void (__cdecl AProjectInfiniteProjectile::* )(AActor *,UPrimitiveComponent *,FVector,const FHitResult &)' to 'void (__cdecl AProjectInfiniteProjectile::* )(UPrimitiveComponent *,AActor *,UPrimitiveComponent *,FVector,const FHitResult &)'	ProjectInfinite	C:\Perforce\GatewayEntertainment\ProjectInfinite 4.12\Source\ProjectInfinite\ProjectInfiniteProjectile.cpp	14

This is all of the code.

// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.

#include "ProjectInfinite.h"
#include "ProjectInfiniteProjectile.h"
#include "GameFramework/ProjectileMovementComponent.h"

AProjectInfiniteProjectile::AProjectInfiniteProjectile() 
{
	
	// Use a sphere as a simple collision representation
	CollisionComp = CreateDefaultSubobject<USphereComponent>(TEXT("SphereComp"));
	CollisionComp->InitSphereRadius(5.0f);
	CollisionComp->BodyInstance.SetCollisionProfileName("Projectile");
	CollisionComp->OnComponentHit.AddDynamic(this, &AProjectInfiniteProjectile::OnHit);		// set up a notification for when this component hits something blocking

	// Players can't walk on it
	CollisionComp->SetWalkableSlopeOverride(FWalkableSlopeOverride(WalkableSlope_Unwalkable, 0.f));
	CollisionComp->CanCharacterStepUpOn = ECB_No;

	// Set as root component
	RootComponent = CollisionComp;

	// Use a ProjectileMovementComponent to govern this projectile's movement
	ProjectileMovement = CreateDefaultSubobject<UProjectileMovementComponent>(TEXT("ProjectileComp"));
	ProjectileMovement->UpdatedComponent = CollisionComp;
	ProjectileMovement->InitialSpeed = 3000.f;
	ProjectileMovement->MaxSpeed = 3000.f;
	ProjectileMovement->bRotationFollowsVelocity = true;
	ProjectileMovement->bShouldBounce = true;

	// Die after 3 seconds by default
	InitialLifeSpan = 3.0f; 
}


void AProjectInfiniteProjectile::OnHit(AActor* OtherActor, UPrimitiveComponent* OtherComp, FVector NormalImpulse, const FHitResult& Hit)
{
	// Only add impulse and destroy projectile if we hit a physics
	if ((OtherActor != NULL) && (OtherActor != this) && (OtherComp != NULL) && OtherComp->IsSimulatingPhysics())
	{
		OtherComp->AddImpulseAtLocation(GetVelocity() * 100.0f, GetActorLocation());

		Destroy();
	}
}
2

Thank you, that did the trick

3

Parameter was Added you miss one if you are using 4.12

for versions bellow 4.12 use

 UFUNCTION()
 void OnOverlap(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult);
     
 UFUNCTION()
 void OnHit(class AActor* act, class UPrimitiveComponent* Other, FVector Impulse, const FHitResult & HitResult);

for 4.12 and above

 UFUNCTION()
 void OnOverlap(class UPrimitiveComponent* OverlappingComp, class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult);
     
 UFUNCTION()
 void OnHit(class UPrimitiveComponent* HitComp, class AActor* Actor, class UPrimitiveComponent* Other, FVector Impulse, const FHitResult & HitResult);

Good Luck and have Fun =)

4

No Problem already answered 3 Post regarding that change =) in case you encounter a signature error again look closly at the error msg you can See the additional Parameter there.