Unreal Engine Virtual Joystick Extension

VirtualJoystickEx is a plugin whose main purpose is to show how to extend Unreal Engine virtual joystick functionality
This plugin requires UE version > 4.26 (was tested in 4.27 and UE5.0EA). To compile it with your project SlateCore and Slate dependencies must be added in the game module.

To use VirtualJoystickEx, APlayerController::CreateVirtualJoystick method must be overridden:

virtual TSharedPtr<SVirtualJoystick> CreateVirtualJoystick() override
{
    return SNew(SVirtualJoystickEx);
}

The next step is creating TouchInterfaceEx asset in Content Browser (Micsellaneous/Touch Interface Ex Setup), setting it up, and set the asset as the default touch interface in Project Settings/Input

Features

• Joystick Pressed/Released events
• Zones: circular and conical with the ability to get enter/exit events

Usage in code

Get VirtualJoystickEx from player controller, add new zone (or setup in TouchInterfaceEx asset) and subscribe on zone events:

auto PlayerController = GetController<AMyPlayerController>();
TSharedPtr<SVirtualJoystickEx> JoyStick = PlayerController ? PlayerController->GetVirtualJoystick() : nullptr;
	
if (JoyStick.IsValid())
{
  JoyStick->AddZone("Sprint", 1.0f, 10.0f, 330.0f, 30.0f, 0.3f);
  JoyStick->GetZoneEnterEvent("Sprint")->AddWeakLambda(this, [this](FName)
  {
    bSprintHeld = true;
  });

  JoyStick->GetZoneExitEvent("Sprint")->AddWeakLambda(this, [this](FName)
  {
    bSprintHeld = false;
  });
}

Extending

Inherit from VirtualJoystickEx, make what you want.
To able of making specified touch interface assets, asset factory and asset type actions classes must be implemented.
Also, asset type actions class must be registered in Asset Tools module. For more information see VirtualJoystickExEditor module.