UE4中蓝图构造脚本和C++中构造函数

前言

初学UE4和C++，在尝试将蓝图函数转为C++代码时候，发现了一个很坑人的玩意，就是蓝图中的构造脚本(Consttruction Script)和C++中类的构造函数不是一个东西！因此想记录下来。

准备工作

先创建一个继承Actor的类，现在我有个现成的继承Pawn的类（下文就直接说Actor），可以凑合着用。

CameraOnPlane.h

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Pawn.h"
#include "CameraOnPlane.generated.h"
DECLARE_LOG_CATEGORY_EXTERN(TestLog, Log, All);

UCLASS()
class TRAJECTORY_API ACameraOnPlane : public APawn
{
	GENERATED_BODY()

public:
	// Sets default values for this pawn's properties
	ACameraOnPlane();

protected:
	// Called when the game starts or when spawned
	virtual void BeginPlay() override;
	virtual void OnConstruction(const FTransform& Transform) override;

public:
	// Called every frame
	virtual void Tick(float DeltaTime) override;

	// Called to bind functionality to input
	virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
};

CameraOnPlane.cpp

// Fill out your copyright notice in the Description page of Project Settings.


#include "CameraOnPlane.h"
DEFINE_LOG_CATEGORY(TestLog);

// Sets default values
ACameraOnPlane::ACameraOnPlane()
{
	// Set this pawn to call Tick() every frame.  You can turn this off to improve performance i