非AActor类的Tick实现

1. 继承虚基类FTickableGameObject

   #include "Tickable.h"
   class  ConsoleVarManager  : public FTickableGameObject
   {
    //...
   }
   

2. 实现虚函数Tick

   virtual void Tick(float DeltaTime) override
   {
    //do something in Tick		
   }
   

3. 实现GetStatId （用于性能监测与调试标记）

   virtual TStatId GetStatId() const override
   {
    RETURN_QUICK_DECLARE_CYCLE_STAT(ConsoleVarManager, STATGROUP_Tickables);
   }
   

在FTickableGameObject的构造函数内实现了注册该类至TickableObjects

FTickableGameObject::FTickableGameObject()
{
	FTickableStatics& Statics = FTickableStatics::Get();

	if (UObjectInitialized())
	{
		Statics.QueueTickableObjectForAdd(this);
	}
	else
	{
		AddTickableObject(Statics.TickableObjects, this);
	}
}

因此可知继承了FTickableGameObject的类需要首先执行父类的构造函数才能被注册调用Tick的方法。 这里举例挂载到了GameInstance内

#pragma once

#include "CoreMinimal.h"
#include "Engine/GameInstance.h"
#include "ConsoleVarManager.h"
#include "MyGameInstance.generated.h"

/**
 * 
 */
UCLASS()
class PLUGINSLEARN_API UMyGameInstance : public UGameInstance
{
	GENERATED_BODY()

	ConsoleVarManager* ConsoleManager;

	virtual void Init() override
	{
		ConsoleManager = new ConsoleVarManager();
		UE_LOG(LogTemp,Warning,TEXT("UMyGameInstance Init"));
		Super::Init();
	}

	virtual void Shutdown() override
	{

		delete ConsoleManager;
		ConsoleManager = nullptr;
		UE_LOG(LogTemp,Warning,TEXT("UMyGameInstance Shutdown"));
		Super::Shutdown();
	}
};

或者直接多继承UObject，在引擎构造该类的ODC即调用了父类的构造函数。