修复拖拽后原物品不会删除的bug

ProjectFish/Source/ProjectFish/Data/PlayerInfoSaveGame.h

@@ -48,4 +48,8 @@ public:
 	// 任务存档数据
 	UPROPERTY(SaveGame, BlueprintReadWrite, meta = (ToolTip = "任务存档数据"))
 	TArray<FQuestSaveData> QuestSaveData;
+
+	//已战胜的鱼
+	UPROPERTY(SaveGame, BlueprintReadWrite, meta = (ToolTip = "被击败的鱼"))
+	TArray<int32> Fish_defeated_IDS;
 };

ProjectFish/Source/ProjectFish/Gameplay/Subsystem/GameInfoManager.cpp

@@ -102,3 +102,22 @@ void UGameInfoManager::CreateGameInfoAndSave(UShapeAsset* ShipContainerShape, US
 
 	SaveGameInfo();
 }
+
+bool UGameInfoManager::IsFishDefeated(int32 FishID)
+{
+	if (!IsValid(PlayerInfo))
+	{
+		return false;
+	}
+	return PlayerInfo->Fish_defeated_IDS.Contains(FishID);
+}
+
+void UGameInfoManager::AddDefeatedFish(int32 FishID)
+{
+	if (!IsValid(PlayerInfo))
+	{
+		PlayerInfo = NewObject<UPlayerInfoSaveGame>(this);
+	}
+	PlayerInfo->Fish_defeated_IDS.Add(FishID);
+	SaveGameInfo();
+}

ProjectFish/Source/ProjectFish/Gameplay/Subsystem/GameInfoManager.h

@@ -29,6 +29,12 @@ public:
 
 	UFUNCTION(BlueprintCallable)
 	void CreateGameInfoAndSave(UShapeAsset* ShipContainerShape, UShapeAsset* PlayerContainerShape);
+
+	UFUNCTION(BlueprintPure)
+	bool IsFishDefeated(int32 FishID);
+
+	UFUNCTION(BlueprintCallable)
+	void AddDefeatedFish(int32 FishID);
 protected:
 	UPROPERTY(BlueprintReadOnly)
 	TObjectPtr<class UPlayerInfoSaveGame> PlayerInfo;

ProjectFish/Source/ProjectFish/Gameplay/Subsystem/UIManagerSubsystem.cpp

@@ -0,0 +1,53 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+
+#include "UIManagerSubsystem.h"
+#include "ProjectFish/Widget/DragableUserWidget.h"
+#include "Framework/Application/SlateApplication.h"
+#include "Components/CanvasPanelSlot.h"
+
+
+void UUIManagerSubsystem::Initialize(FSubsystemCollectionBase& Collection)
+{
+	Super::Initialize(Collection);
+	FSlateApplication& SlateApp = FSlateApplication::Get();
+	SlateApp.OnApplicationMousePreInputButtonDownListener().AddUObject(this, &UUIManagerSubsystem::OnMouseButtonDown);
+}
+
+void UUIManagerSubsystem::AddDragWidget(UDragableUserWidget* UserWidget)
+{
+	UserWidget->AddToViewport();
+	UserWidget->SetVisibility(ESlateVisibility::HitTestInvisible);
+	DragDropWidget = MakeWeakObjectPtr(UserWidget);
+}
+
+void UUIManagerSubsystem::RemoveDragWidget()
+{
+	if (DragDropWidget.IsValid())
+	{
+		DragDropWidget->RemoveFromViewport();
+	}
+	DragDropWidget.Reset();
+}
+
+UDragableUserWidget* UUIManagerSubsystem::GetDragWidget()
+{
+	if (DragDropWidget.IsValid())
+	{
+		return DragDropWidget.Get();
+	}
+	return nullptr;
+}
+
+void UUIManagerSubsystem::OnMouseButtonDown(const FPointerEvent& PointerEvent)
+{
+	if (DragDropWidget.IsValid())
+	{
+		if (PointerEvent.GetEffectingButton() == EKeys::RightMouseButton)
+		{
+			DragDropWidget->OnMouseButtonDownWhenDragging(PointerEvent);
+		}
+	}
+}
+
+

ProjectFish/Source/ProjectFish/Gameplay/Subsystem/UIManagerSubsystem.h

@@ -0,0 +1,32 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Subsystems/GameInstanceSubsystem.h"
+#include "Widgets/SWidget.h"
+#include "Blueprint/UserWidget.h"
+#include "UIManagerSubsystem.generated.h"
+
+/**
+ * 
+ */
+UCLASS()
+class PROJECTFISH_API UUIManagerSubsystem : public UGameInstanceSubsystem
+{
+	GENERATED_BODY()
+public:
+	virtual void Initialize(FSubsystemCollectionBase& Collection) override;
+	UFUNCTION(BlueprintCallable, Category = "UIManagerSubsystem")
+	void AddDragWidget(class UDragableUserWidget* UserWidget);
+	UFUNCTION(BlueprintCallable, Category = "UIManagerSubsystem")
+	void RemoveDragWidget();
+	UFUNCTION(BlueprintPure, Category = "UIManagerSubsystem")
+	UDragableUserWidget* GetDragWidget();
+
+	void OnMouseButtonDown(const FPointerEvent& PointerEvent);
+
+protected:
+	TWeakObjectPtr<class UDragableUserWidget> DragDropWidget;
+	
+};

ProjectFish/Source/ProjectFish/ProjectFish.Build.cs

@@ -9,6 +9,6 @@ public class ProjectFish : ModuleRules
 		PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
 		OptimizeCode = CodeOptimization.Never;
         PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine",
-	        "InputCore", "NavigationSystem", "AIModule", "Niagara", "EnhancedInput", "GameplayTags", "DeveloperSettings" });
+	        "InputCore", "NavigationSystem", "AIModule", "Niagara", "EnhancedInput", "GameplayTags", "DeveloperSettings", "UMG", "Slate" ,"SlateCore"});
     }
 }

ProjectFish/Source/ProjectFish/Widget/DragableUserWidget.cpp

@@ -0,0 +1,116 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+
+#include "DragableUserWidget.h"
+
+#include "Blueprint/WidgetLayoutLibrary.h"
+#include "Components/CanvasPanelSlot.h"
+#include "ProjectFish/Gameplay/Subsystem/UIManagerSubsystem.h"
+
+void UDragableUserWidget::SetWidgetDragable(bool Dragable)
+{
+	bDragable = Dragable;
+}
+
+void UDragableUserWidget::BeginDrag(const FGeometry& InGeometry)
+{
+	bDraging = true;
+	//OriginWidgetScreenPos = InGeometry.GetAbsolutePosition();
+	UUIManagerSubsystem* UIManager = GetGameInstance()->GetSubsystem<UUIManagerSubsystem>();
+	UIManager->AddDragWidget(this);
+	
+}
+
+void UDragableUserWidget::EndDrag()
+{
+	//取消拖拽 不处理点击事件
+	bDraging = false;
+	UUIManagerSubsystem* UIManager = GetGameInstance()->GetSubsystem<UUIManagerSubsystem>();
+	UIManager->RemoveDragWidget();
+}
+
+// FReply UDragableUserWidget::NativeOnMouseButtonDown(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
+// {
+// 	if (bDragable && InMouseEvent.GetEffectingButton() == EKeys::LeftMouseButton)
+// 	{
+// 		if (!bDraging)
+// 		{
+// 			BeginDrag(InGeometry);
+// 			return FReply::Unhandled();
+// 		}
+// 	}
+// 	else
+// 	{
+// 		return Super::NativeOnMouseButtonDown(InGeometry, InMouseEvent);
+// 	}
+// 	return FReply::Unhandled();
+// }
+//
+// FReply UDragableUserWidget::NativeOnMouseButtonUp(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
+// {
+// 	return Super::NativeOnMouseButtonUp(InGeometry, InMouseEvent);
+// }
+//
+// FReply UDragableUserWidget::NativeOnMouseMove(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
+// {
+// 	if (bDraging)
+// 	{
+// 		Super::NativeOnMouseMove(InGeometry, InMouseEvent);
+//         
+// 		// 获取鼠标在屏幕空间的绝对坐标
+// 		FVector2D MouseScreenPos = InMouseEvent.GetScreenSpacePosition();
+//         
+// 		// 获取Widget在屏幕上的实际渲染尺寸
+// 		
+// 		FVector2D WidgetAbsoluteSize = InGeometry.GetDrawSize();
+//         
+// 		// 计算Widget中心点应对应的屏幕位置
+// 		FVector2D DesiredCenter = MouseScreenPos;
+//         
+// 		// 计算新的左上角位置（让中心点对准鼠标）
+// 		FVector2D NewTopLeft =FVector2D(DesiredCenter.X - WidgetAbsoluteSize.X * 0.5f, DesiredCenter.Y - WidgetAbsoluteSize.Y* 0.5f ); ;
+//         
+// 		// 边界检查
+// 		FVector2D ViewportSize;
+// 		if (GEngine && GEngine->GameViewport)
+// 		{
+// 			GEngine->GameViewport->GetViewportSize(ViewportSize);
+// 		}
+// 		else
+// 		{
+// 			ViewportSize = FVector2D(1920, 1080);
+// 		}
+//         
+// 		// 确保Widget不会完全移出屏幕
+// 		NewTopLeft.X = FMath::Clamp(NewTopLeft.X, 0.0f, ViewportSize.X - WidgetAbsoluteSize.X);
+// 		NewTopLeft.Y = FMath::Clamp(NewTopLeft.Y, 0.0f, ViewportSize.Y - WidgetAbsoluteSize.Y);
+//         
+// 		// // 计算相对于原始位置的偏移量
+// 		// FVector2D ParentAbsolutePosition = FVector2D::ZeroVector;
+// 		// if (InGeometry.GetParentGeometry().IsValid())
+// 		// {
+// 		// 	ParentAbsolutePosition = InGeometry.GetParentGeometry().GetAbsolutePosition();
+// 		// }
+//   //       
+// 		FVector2D LocalOffset = NewTopLeft - OriginWidgetScreenPos;
+//         
+// 		// 应用变换
+// 		FWidgetTransform WidgetTransform = GetRenderTransform();
+// 		WidgetTransform.Translation = LocalOffset/InGeometry.Scale;
+// 		SetRenderTransform(WidgetTransform);
+//
+// 		// FString Scale = FString::Printf(TEXT("%.0f"), InGeometry.Scale);
+// 		// UE_LOG(LogTemp, Warning, TEXT("Mouse: %s, CurrentWidgetScreenPos: %s, WidgetAbsoluteSize: %s NewTopLeft : %s LocalOffset : %s Scale = %s"), 
+// 		// 	   *MouseScreenPos.ToString(), 
+// 		// 	   *OriginWidgetScreenPos.ToString(), 
+// 		// 	   *WidgetAbsoluteSize.ToString(),
+// 		// 	   *NewTopLeft.ToString(),
+// 		// 	   *LocalOffset.ToString(),
+// 		// 	   *Scale
+// 		// 	   );
+//         
+// 		return FReply::Unhandled();
+// 	}
+// 	else
+// 		return Super::NativeOnMouseMove(InGeometry, InMouseEvent);
+// }

ProjectFish/Source/ProjectFish/Widget/DragableUserWidget.h

@@ -0,0 +1,39 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Blueprint/UserWidget.h"
+#include "DragableUserWidget.generated.h"
+
+/**
+ * 
+ */
+UCLASS()
+class PROJECTFISH_API UDragableUserWidget : public UUserWidget
+{
+	GENERATED_BODY()
+	
+public:
+	UFUNCTION(BlueprintCallable, Category = "Dragable Widget")
+	void SetWidgetDragable(bool Dragable);
+	UFUNCTION(BlueprintCallable, Category = "Dragable Widget")
+	void BeginDrag(const FGeometry& InGeometry);
+	UFUNCTION(BlueprintCallable, Category = "Dragable Widget")
+	void EndDrag();
+
+	UFUNCTION(BlueprintImplementableEvent, Category = "Dragable Widget")
+	void OnMouseButtonDownWhenDragging(const FPointerEvent& PointerEvent);
+	
+	// virtual FReply NativeOnMouseButtonDown( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override; 
+	// virtual FReply NativeOnMouseButtonUp( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override;
+	// virtual FReply NativeOnMouseMove( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override;
+protected:
+	UPROPERTY(BlueprintReadWrite, EditAnywhere, meta = (ExposeOnSpawn = true))
+	bool bDragable;
+
+	UPROPERTY(BlueprintReadOnly)
+	bool bDraging;
+
+	FVector2D OriginWidgetScreenPos;
+};