UE4 延时调用（定时器）

• //.h
  // Fill out your copyright notice in the Description page of Project Settings.
  
  #pragma once
  
  #include "CoreMinimal.h"
  #include "GameFramework/GameModeBase.h"
  #include "PersonMoveGameModeBase.generated.h"
  
  /**
   * 
   */
  UCLASS()
  class PERSONMOVE_API APersonMoveGameModeBase : public AGameModeBase
  {
  	GENERATED_BODY()
  	
  public:
  	//GameMode 的开始是StartPlay
  	virtual void StartPlay() override;
  	
  protected:
  
  	APersonMoveGameModeBase();
  
  	FTimerHandle TimerHandle_TimeCount;
  	void CutTime();
  
  	UPROPERTY(BlueprintReadOnly,Category="UI")
  	int CountTime;
  };
  

• //.cpp
  // Fill out your copyright notice in the Description page of Project Settings.
  
  #include "PersonMoveGameModeBase.h"
  #include "TimerManager.h"  //定时器
  
  void APersonMoveGameModeBase :: StartPlay()
  {
  	Super::StartPlay();
  
  	//SetTimer(时间句柄，作用在哪个物体身上，调用的函数,多长时间调用一次，是否要循环，几秒后调用)
    GetWorldTimerManager().SetTimer(TimerHandle_TimeCount, this, &APersonMoveGameModeBase::CutTime, 1.0f, true, 1.0f);
  
  }
  
  APersonMoveGameModeBase::APersonMoveGameModeBase()
  {
  	CountTime = 3;
  	
  }
  
  void APersonMoveGameModeBase::CutTime()
  {
  	CountTime--;
  	UE_LOG(LogTemp, Warning, TEXT("%s"), *FString::SanitizeFloat(CountTime));
  	if (CountTime == 0)
  	{
  		//清除时间
  		GetWorldTimerManager().ClearTimer(TimerHandle_TimeCount);
  	}
  	
  }
  

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