虛幻引擎在C++中實作藍圖中的Delay功能

網上有人推薦說使用 FPlatformProcess::Sleep(1.0f);

其實使用這種方法會導緻整個程式被延遲，并不是我們想要的。

1、在BindLambda中使用FTimerDelegate

FTimerDelegate TimerDelegate;
TimerDelegate.BindLambda([&]
{
  UE_LOG(LogTemp, Warning, TEXT("This text will appear in the console 3 seconds after execution"))
});

FTimerHandle TimerHandle;
GetWorld()->GetTimerManager().SetTimer(TimerHandle, TimerDelegate, 3, false);      

2. 隻使用FTimerHandle

FTimerHandle TimerHandle;
GetWorld()->GetTimerManager().SetTimer(TimerHandle, [&]()
{
  UE_LOG(LogTemp, Warning, TEXT("This text will appear in the console 3 seconds after execution"))
}, 3, false);      

1、如果沒有輸入參數

FTimerHandle TimerHandle;
GetWorld()->GetTimerManager().SetTimer(TimerHandle, this, &UObject::MethodWithDelay, 3, false);      

2、如果有輸入參數

int32 ParameterToPass = 100; // You can use any supported variable type

FTimerHandle TimerHandle;
FTimerDelegate TimerDelegate = FTimerDelegate::CreateUObject(this, &UObject::MethodWithDelay, ParameterToPass);
GetWorld()->GetTimerManager().SetTimer(TimerHandle, TimerDelegate, 3, false);