UE4 AddDynamic报错解决
学习教程的时候碰撞函数绑定的时候报错:
no instance of function template "FComponentHitSignature::__Internal_AddDynamic" matches the
argument list，AddDynamic宏没有匹配上
函数定义：
/** called when projectile hits something */
UFUNCTION()
void OnHit(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, FVector NormalImpulse, const FHitResult& Hit);
绑定语句：
CollisionComp->OnComponentHit.AddDynamic(this, &AFPSProjectile::OnHit);
报错no instance of function template "FComponentHitSignature::__Internal_AddDynamic" matches the argument list，AddDynamic宏没有匹配上
这种情况一般需要查看对应宏的定义（如OnComponentHit），检查参数
查看发现OnComponentHit对应的宏定义为：
/**
* Delegate for notification of blocking collision against a specific component.
* NormalImpulse will be filled in for physics-simulating bodies, but will be zero for swept-component blocking collisions.
*/
DECLARE_DYNAMIC_MULTICAST_DELEGATE_FiveParams( FComponentHitSignature, UPrimitiveComponent*, HitComponent, AActor*, OtherActor, UPrimitiveComponent*, OtherComp,
FVector, NormalImpulse, const FHitResult&, Hit );
发现这里缺失了第一个UPrimitiveComponent* HitComponent参数，修改对应OnHit函数为
void OnHit(UPrimitiveComponent* HitComponent, class AActor* OtherActor, class UPrimitiveComponent* OtherComp, FVector NormalImpulse, const FHitResult& Hit);
则可以成功匹配，编译成功
附上官方论坛的截图：