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| #include "UI/LyraJoystickWidget.h"
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| #include "CommonHardwareVisibilityBorder.h"
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| #include "Components/Image.h"
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| #include UE_INLINE_GENERATED_CPP_BY_NAME(LyraJoystickWidget)
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| #define LOCTEXT_NAMESPACE "LyraJoystick"
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| ULyraJoystickWidget::ULyraJoystickWidget(const FObjectInitializer& ObjectInitializer)
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| : Super(ObjectInitializer)
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| {
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| SetConsumePointerInput(true);
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| }
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| FReply ULyraJoystickWidget::NativeOnTouchStarted(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent)
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| {
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| Super::NativeOnTouchStarted(InGeometry, InGestureEvent);
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| TouchOrigin = InGestureEvent.GetScreenSpacePosition();
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| FReply Reply = FReply::Handled();
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| if (!HasMouseCaptureByUser(InGestureEvent.GetUserIndex(), InGestureEvent.GetPointerIndex()))
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| {
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| Reply.CaptureMouse(GetCachedWidget().ToSharedRef());
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| }
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| return Reply;
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| }
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| FReply ULyraJoystickWidget::NativeOnTouchMoved(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent)
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| {
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| Super::NativeOnTouchMoved(InGeometry, InGestureEvent);
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| HandleTouchDelta(InGeometry, InGestureEvent);
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| FReply Reply = FReply::Handled();
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| if (!HasMouseCaptureByUser(InGestureEvent.GetUserIndex(), InGestureEvent.GetPointerIndex()))
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| {
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| Reply.CaptureMouse(GetCachedWidget().ToSharedRef());
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| }
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| return Reply;
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| }
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| FReply ULyraJoystickWidget::NativeOnTouchEnded(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent)
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| {
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| StopInputSimulation();
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| return FReply::Handled().ReleaseMouseCapture();
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| }
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| void ULyraJoystickWidget::NativeOnMouseLeave(const FPointerEvent& InMouseEvent)
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| {
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| Super::NativeOnMouseLeave(InMouseEvent);
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| StopInputSimulation();
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| }
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| void ULyraJoystickWidget::NativeTick(const FGeometry& MyGeometry, float InDeltaTime)
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| {
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| Super::NativeTick(MyGeometry, InDeltaTime);
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| if (!CommonVisibilityBorder || CommonVisibilityBorder->IsVisible())
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| {
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| if (JoystickForeground && JoystickBackground)
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| {
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| JoystickForeground->SetRenderTranslation(
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| (bNegateYAxis ? FVector2D(1.0f, -1.0f) : FVector2D(1.0f)) *
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| StickVector *
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| (JoystickBackground->GetDesiredSize() * 0.5f)
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| );
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| }
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| InputKeyValue2D(StickVector);
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| }
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| }
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| void ULyraJoystickWidget::HandleTouchDelta(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent)
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| {
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| const FVector2D& ScreenSpacePos = InGestureEvent.GetScreenSpacePosition();
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| FVector2D LocalStickCenter = InGeometry.GetAbsoluteSize();
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| FVector2D ScreenSpaceStickCenter = InGeometry.LocalToAbsolute(LocalStickCenter);
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| FVector2D MoveStickOffset = (ScreenSpacePos - ScreenSpaceStickCenter);
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| if (bNegateYAxis)
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| {
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| MoveStickOffset *= FVector2D(1.0f, -1.0f);
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| }
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| FVector2D MoveStickDir = FVector2D::ZeroVector;
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| float MoveStickLength = 0.0f;
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| MoveStickOffset.ToDirectionAndLength(MoveStickDir, MoveStickLength);
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| MoveStickLength = FMath::Min(MoveStickLength, StickRange);
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| MoveStickOffset = MoveStickDir * MoveStickLength;
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| StickVector = MoveStickOffset / StickRange;
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| }
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| void ULyraJoystickWidget::StopInputSimulation()
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| {
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| TouchOrigin = FVector2D::ZeroVector;
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| StickVector = FVector2D::ZeroVector;
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| }
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| #undef LOCTEXT_NAMESPACE
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