Split Screen View Border Change

eray_ozr · January 17, 2024, 4:08pm

I created this split screen with
local multiplayer, UGameViewportClient and LayoutPlayers() override;

Also I can switch controlled players with customized SSSwapControllers like this.

gist.github.com

https://gist.github.com/ffreality/cfb1150f92819dbaf41b0df24bb1d083

posses_local_player.cpp

bool UCustomViewport::PossesLocalPlayer(const int32 PlayerId, const int32 ControllerId)
{
    UEngine* const REF_Engine = GameInstance->GetEngine();
    const int32 NumPlayers = REF_Engine->GetNumGamePlayers(this);

    if (NumPlayers > PlayerId + 1 || ControllerId < -1)
    {
        return false;
    }

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But I want to change that black border and I ask how

Btw. I did some expriments about it and I found these.

TSharedRef<SWidget> GameView = GEngine->GameViewport->GetWindow().ToSharedRef().Get().GetContent();

contains actual game view and if use SetContent(UUSerWidget::TakeWidget())
it will replace game view with another widget and also I can move game view to another window which I created with SWindow.

So, I used this steps to achieve my goal but it didn’t work.

I created a custom UMG with C++ and put CanvasPanel and Overlay components.
Custom UMG · GitHub
I set it as main window content
I tried to assign my custom UMG as parent of game view SWidget with SWidget::AssignParentWidget

gist.github.com

https://gist.github.com/ffreality/5d4b7aadfbb234d36370d1490436437c

UseCustomView.cpp

bool UWindowSystemBPLibrary::UseCustomGameView(UCustomGameView* GameViewWidget)
{
	if (!IsValid(GameViewWidget))
	{
		return false;
	}

	SWindow& GameWindow = GEngine->GameViewport->GetWindow().ToSharedRef().Get();
	TSharedRef<SWidget> ActualGameView = GameWindow.GetContent();

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Is there any suggestion for that ?