Rebinding Keys At Runtime in Packaged Game

Overview

Author Rama (talk)

Dear Community,

Full Project Release For You

I have composed a full sample project that uses my Victory BP Library plugin nodes to create a fully rebindable keys menu in UE4!

With this menu you can simply click on the names of keys next to their related actions, and then press a key to rebind!

My input system tracks Ctrl Alt Shift and Command as well.

So you can simply click, then hold CTRL and press R to bind any action to Ctrl R !

And it saves to disk immediately and rebinds the input so that the keybind is instantly updated during runtime!

Rama's Re-Bindable Keys Complete Sample Project For You

File:ReBindableKeys.zip

BP Node Overview

I have succeeded in rebinding keys at runtime in a packaged game for use with a UMG Key Rebinding menu!

I have provided you with the Blueprint nodes in my Victory BP Library!

Victory BP Library

Victory BP Library Download

My C++ Code

I spent several hours to research how to do this in the UE4 code base.

Here's the core C++ code I wrote!

The whole source code is in my Victory BP Library download!

Enjoy!

bool UVictoryBPFunctionLibrary::VictoryReBindKey(FVictoryInput Action)
{
	UInputSettings* Settings = const_cast<UInputSettings*>(GetDefault<UInputSettings>());
	if(!Settings) return false;

	TArray<FInputActionKeyMapping>& Actions = Settings->ActionMappings;
	
	//~~~
	
	bool Found = false;
	for(FInputActionKeyMapping& Each : Actions)
	{
		if(Each.ActionName.ToString() == Action.ActionName)
		{  
			UVictoryBPFunctionLibrary::UpdateActionMapping(Each,Action);
			Found = true;
			break;
		}  
	}
	
	if(Found) 
	{
		//SAVES TO DISK
		const_cast<UInputSettings*>(Settings)->SaveKeyMappings();
		   
		//REBUILDS INPUT, creates modified config in Saved/Config/Windows/Input.ini
		for (TObjectIterator<UPlayerInput> It; It; ++It)
		{
			It->ForceRebuildingKeyMaps(true);
		}
	}
	return Found;
}

Conclusion

Enjoy!

♥

Rama