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unitysamples / LyraStarterGame /Source /LyraGame /UI /Weapons /SHitMarkerConfirmationWidget.cpp
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// Copyright Epic Games, Inc. All Rights Reserved.
#include "SHitMarkerConfirmationWidget.h"
#include "Weapons/LyraWeaponStateComponent.h"
class FPaintArgs;
SHitMarkerConfirmationWidget::SHitMarkerConfirmationWidget()
{
}
void SHitMarkerConfirmationWidget::Construct(const FArguments& InArgs, const FLocalPlayerContext& InContext, const TMap<FGameplayTag, FSlateBrush>& ZoneOverrideImages)
{
PerHitMarkerImage = InArgs._PerHitMarkerImage;
PerHitMarkerZoneOverrideImages = ZoneOverrideImages;
AnyHitsMarkerImage = InArgs._AnyHitsMarkerImage;
bColorAndOpacitySet = InArgs._ColorAndOpacity.IsSet();
ColorAndOpacity = InArgs._ColorAndOpacity;
MyContext = InContext;
}
int32 SHitMarkerConfirmationWidget::OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const
{
const bool bIsEnabled = ShouldBeEnabled(bParentEnabled);
const ESlateDrawEffect DrawEffects = bIsEnabled ? ESlateDrawEffect::None : ESlateDrawEffect::DisabledEffect;
const FVector2D LocalCenter = AllottedGeometry.GetLocalPositionAtCoordinates(FVector2D(0.5f, 0.5f));
const bool bDrawMarkers = (HitNotifyOpacity > KINDA_SMALL_NUMBER);
if (bDrawMarkers)
{
// Check if we should use screen-space damage location hit notifies
TArray<FLyraScreenSpaceHitLocation> LastWeaponDamageScreenLocations;
if (APlayerController* PC = MyContext.IsInitialized() ? MyContext.GetPlayerController() : nullptr)
{
if (ULyraWeaponStateComponent* WeaponStateComponent = PC->FindComponentByClass<ULyraWeaponStateComponent>())
{
WeaponStateComponent->GetLastWeaponDamageScreenLocations(/*out*/ LastWeaponDamageScreenLocations);
}
}
if ((LastWeaponDamageScreenLocations.Num() > 0) && (PerHitMarkerImage != nullptr))
{
const FVector2D HalfAbsoluteSize = AllottedGeometry.GetAbsoluteSize() * 0.5f;
for (const FLyraScreenSpaceHitLocation& Hit : LastWeaponDamageScreenLocations)
{
const FSlateBrush* LocationMarkerImage = PerHitMarkerZoneOverrideImages.Find(Hit.HitZone);
if (LocationMarkerImage == nullptr)
{
LocationMarkerImage = PerHitMarkerImage;
}
FLinearColor MarkerColor = bColorAndOpacitySet ?
ColorAndOpacity.Get().GetColor(InWidgetStyle) :
(InWidgetStyle.GetColorAndOpacityTint() * LocationMarkerImage->GetTint(InWidgetStyle));
MarkerColor.A *= HitNotifyOpacity;
const FVector2D WindowSSLocation = Hit.Location + MyCullingRect.GetTopLeft(); // Accounting for window trim when not in fullscreen mode
const FSlateRenderTransform DrawPos(AllottedGeometry.AbsoluteToLocal(WindowSSLocation));
const FPaintGeometry Geometry(AllottedGeometry.ToPaintGeometry(LocationMarkerImage->ImageSize, FSlateLayoutTransform(-(LocationMarkerImage->ImageSize * 0.5f)), DrawPos));
FSlateDrawElement::MakeBox(OutDrawElements, LayerId, Geometry, LocationMarkerImage, DrawEffects, MarkerColor);
}
}
if (AnyHitsMarkerImage != nullptr)
{
FLinearColor MarkerColor = bColorAndOpacitySet ?
ColorAndOpacity.Get().GetColor(InWidgetStyle) :
(InWidgetStyle.GetColorAndOpacityTint() * AnyHitsMarkerImage->GetTint(InWidgetStyle));
MarkerColor.A *= HitNotifyOpacity;
// Otherwise show the hit notify in the center of the reticle
const FPaintGeometry Geometry(AllottedGeometry.ToPaintGeometry(AnyHitsMarkerImage->ImageSize, FSlateLayoutTransform(LocalCenter - (AnyHitsMarkerImage->ImageSize * 0.5f))));
FSlateDrawElement::MakeBox(OutDrawElements, LayerId, Geometry, AnyHitsMarkerImage, DrawEffects, MarkerColor);
}
}
return LayerId;
}
FVector2D SHitMarkerConfirmationWidget::ComputeDesiredSize(float) const
{
return FVector2D(100.0f, 100.0f);
}
void SHitMarkerConfirmationWidget::Tick(const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime)
{
HitNotifyOpacity = 0.0f;
if (APlayerController* PC = MyContext.IsInitialized() ? MyContext.GetPlayerController() : nullptr)
{
if (ULyraWeaponStateComponent* DamageMarkerComponent = PC->FindComponentByClass<ULyraWeaponStateComponent>())
{
const double TimeSinceLastHitNotification = DamageMarkerComponent->GetTimeSinceLastHitNotification();
if (TimeSinceLastHitNotification < HitNotifyDuration)
{
HitNotifyOpacity = FMath::Clamp(1.0f - (float)(TimeSinceLastHitNotification / HitNotifyDuration), 0.0f, 1.0f);
}
}
}
}