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Using SetTimer() on a Function with Parameters

I am currently trying to implement a method that calls 2 functions. The catch is I don't want the second one to run until the animation of the first has finished playing.

I am trying to unequip a weapon then equip a new one. Each weapon in the game has its own holster/equip animation, that's why I need to play the animations separately.

I have been trying to do it by:

 GetWorldTimerManager().SetTimer(this, &AArenaCharacter::EquipWeapon, Duration, false);

The problem is AArenaCharacter::EquipWeapon(class AArenaRangedWeapon* NewWeapon) takes a parameter in, so the timer gets upset. Does anyone know of a way I can have the timer run a function that takes in parameters?

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asked Jan 29 '15 at 07:48 AM in C++ Programming

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4 answers: sort voted first

Hello, of course it's possible to have the requested functionality you seek! Inside your header file type in the following code:

 void MyUsefulFunction(int32 x, float y);

Then, inside your source file:

 FTimerDelegate TimerDel;
 FTimerHandle TimerHandle;
 int32 MyInt = 10;
 float MyFloat = 20.f;
 //Binding the function with specific values
 TimerDel.BindUFunction(this, FName("MyUsefulFunction"), MyInt, MyFloat);
 //Calling MyUsefulFunction after 5 seconds without looping
 GetWorld()->GetTimerManager().SetTimer(TimerHandle, TimerDel, 5.f, false);

Don't forget to include the MyUsefulFunction logic in your source file as well:

 void AMyActor::MyUsefulFunction(int32 x, float y)
     GLog->Log("y=" + FString::SanitizeFloat(y));

For more information about delegates, check out the official documentation and my blog post here


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answered Feb 11 '16 at 09:17 AM

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Orfeas El.
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avatar image Vahid Feb 22 '16 at 04:18 PM

Thanks for your answer i use it and it's working but i have a issue. I have a loop timer and my parameter changed from different function but that Delegate just use initial value ! is it possible to use dynamic parameter .

In you example you used a local variable, but i using a public variable and it's changing from different functions.

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It is possible using FTimerDelegate as described here: https://forums.unrealengine.com/showthread.php?55363-SetTimer-with-parameters

 void AMyGameMode::RespawnPlayerWithDelay(APlayerController * Player, float Delay)
     FTimerHandle UniqueHandle;
     FTimerDelegate RespawnDelegate = FTimerDelegate::CreateUObject( this, &AMyGameMode::RespawnPlayer, Player );
     GetWorldTimerManager().SetTimer( UniqueHandle, RespawnDelegate, Delay, false );
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answered Oct 22 '15 at 09:02 PM

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avatar image Pedro Palacios Feb 08 '16 at 01:17 PM

it's possible to do the same thing but with two parameters instead of only one?

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it's possible to do the same thing but with two parameters instead of only one?

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answered Feb 08 '16 at 01:16 PM

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Pedro Palacios
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avatar image ja0335 May 10 '18 at 02:48 PM

Yes, as FTimer::CreateUObject signatures says:

inline static TBaseDelegate CreateUObject(UserClass* InUserObject, typename TMemFunPtrType::Type InFunc, VarTypes... Vars)

so you can pass multiple parameters.

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Animations are one of the effective things to tell and explain your thoughts and edu birdie always perform a good task for students. The writer is focusing on one of the best things so that they can easily run this set up. using a set timer. So I really appreciate the amazing idea of the writer.

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answered Nov 19 '18 at 03:21 PM

Vence Braad (suspended)
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