File size: 3,300 Bytes
7fd553e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | // Copyright Epic Games, Inc. All Rights Reserved.
#include "UI/LyraJoystickWidget.h"
#include "CommonHardwareVisibilityBorder.h"
#include "Components/Image.h"
#include UE_INLINE_GENERATED_CPP_BY_NAME(LyraJoystickWidget)
#define LOCTEXT_NAMESPACE "LyraJoystick"
ULyraJoystickWidget::ULyraJoystickWidget(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SetConsumePointerInput(true);
}
FReply ULyraJoystickWidget::NativeOnTouchStarted(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent)
{
Super::NativeOnTouchStarted(InGeometry, InGestureEvent);
TouchOrigin = InGestureEvent.GetScreenSpacePosition();
FReply Reply = FReply::Handled();
if (!HasMouseCaptureByUser(InGestureEvent.GetUserIndex(), InGestureEvent.GetPointerIndex()))
{
Reply.CaptureMouse(GetCachedWidget().ToSharedRef());
}
return Reply;
}
FReply ULyraJoystickWidget::NativeOnTouchMoved(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent)
{
Super::NativeOnTouchMoved(InGeometry, InGestureEvent);
HandleTouchDelta(InGeometry, InGestureEvent);
FReply Reply = FReply::Handled();
if (!HasMouseCaptureByUser(InGestureEvent.GetUserIndex(), InGestureEvent.GetPointerIndex()))
{
Reply.CaptureMouse(GetCachedWidget().ToSharedRef());
}
return Reply;
}
FReply ULyraJoystickWidget::NativeOnTouchEnded(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent)
{
StopInputSimulation();
return FReply::Handled().ReleaseMouseCapture();
}
void ULyraJoystickWidget::NativeOnMouseLeave(const FPointerEvent& InMouseEvent)
{
Super::NativeOnMouseLeave(InMouseEvent);
StopInputSimulation();
}
void ULyraJoystickWidget::NativeTick(const FGeometry& MyGeometry, float InDeltaTime)
{
Super::NativeTick(MyGeometry, InDeltaTime);
if (!CommonVisibilityBorder || CommonVisibilityBorder->IsVisible())
{
// Move the inner stick icon around with the vector
if (JoystickForeground && JoystickBackground)
{
JoystickForeground->SetRenderTranslation(
(bNegateYAxis ? FVector2D(1.0f, -1.0f) : FVector2D(1.0f)) *
StickVector *
(JoystickBackground->GetDesiredSize() * 0.5f)
);
}
InputKeyValue2D(StickVector);
}
}
void ULyraJoystickWidget::HandleTouchDelta(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent)
{
const FVector2D& ScreenSpacePos = InGestureEvent.GetScreenSpacePosition();
// The center of the geo locally is just its size
FVector2D LocalStickCenter = InGeometry.GetAbsoluteSize();
FVector2D ScreenSpaceStickCenter = InGeometry.LocalToAbsolute(LocalStickCenter);
// Get the offset from the origin
FVector2D MoveStickOffset = (ScreenSpacePos - ScreenSpaceStickCenter);
if (bNegateYAxis)
{
MoveStickOffset *= FVector2D(1.0f, -1.0f);
}
FVector2D MoveStickDir = FVector2D::ZeroVector;
float MoveStickLength = 0.0f;
MoveStickOffset.ToDirectionAndLength(MoveStickDir, MoveStickLength);
MoveStickLength = FMath::Min(MoveStickLength, StickRange);
MoveStickOffset = MoveStickDir * MoveStickLength;
StickVector = MoveStickOffset / StickRange;
}
void ULyraJoystickWidget::StopInputSimulation()
{
TouchOrigin = FVector2D::ZeroVector;
StickVector = FVector2D::ZeroVector;
}
#undef LOCTEXT_NAMESPACE
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