Custom Component, Unreal Engine里定制组件

if you want to do every tick to any Actor, you'd better write your own Component. 

the probable problemsyou may went through:

1. TickComponent not called at all.

solution: You can set the ticking properties of a component through its PrimaryComponentTick property. Try adding the following to your component's constructor:

PrimaryComponentTick.bCanEverTick = true;

2. TickComponent called only Once.

Solution: As it turns out. C++ components are not active by default. Activating the component caused TickComponent to be called more than once. Tye adding the following to your component's constructor:

bAutoActivate = true;

3. You can not fine your custom Component in the Add Components List

I think you may be missing sth like "..,meta = (BlueprintSpawnableComponent)" just before function declaration.

Get ActorLocation and Rotation should be written as:

this->GetOwner()->GetLocation();

this->GetOwner()->SetLocation(...);

this->GetOwner()->GetRotation();

this->GetOwner()->SetRotation(...);

Sample:

.h

#pragma once #include "FaceToMainCharacterComp.generated.h" UCLASS(ClassGroup = FaceTo,meta = (BlueprintSpawnableComponent)) class UFaceToMainCharacterComp : public UActorComponent {      GENERATED_UCLASS_BODY() protected:      virtual void TickComponent(float DeltaTime, enum ELevelTick TickType, FActorComponentTickFunction *ThisTickFunction); };

.cpp

#include "MyThirdPersonCode.h"   //change it to YourOwnGame.h#include "FaceToMainCharacterComp.h"UFaceToMainCharacterComp::UFaceToMainCharacterComp(class FPostConstructInitializeProperties const &PCIP): Super(PCIP){PrimaryComponentTick.bCanEverTick = true;bAutoActivate = true;}void UFaceToMainCharacterComp::TickComponent(float DeltaTime, enum ELevelTick TickType, FActorComponentTickFunction *ThisTickFunction){Super::TickComponent(DeltaTime, TickType, ThisTickFunction);ACharacter* player = UGameplayStatics::GetPlayerCharacter(this, 0);FVector playerLoc = player->K2_GetActorLocation();FVector actorLoc = this->GetOwner()->GetActorLocation();FVector offDir = playerLoc - actorLoc;offDir *= FVector(1.0, 1.0, 0.0);offDir.Normalize();FRotator rot = offDir.Rotation();this->GetOwner()->SetActorRotation(rot);FVector tmp;float length = 0.0;FVector distDir = playerLoc - actorLoc;distDir.ToDirectionAndLength(tmp, length);distDir.Normalize();if (length > 100.0){     this->GetOwner()->SetActorLocation(actorLoc + distDir);}}