回退至简易刀光实现

刀光扭曲视觉表现不佳，笔直的刀光可能视觉感受更好，先不让材质扭曲，后续如果还需要实现扭曲效果，可以在这个版本的基础上继续研究

Content/Lua/HomeLand/UI/Hearth/Widgets/PreCookCenterWidget.lua

@@ -2,16 +2,20 @@ local DataTableUtils = require("Utils.DataTableUtils")
 local ESlateVisibility = import("ESlateVisibility")
 local SlateBlueprintLibrary = import("SlateBlueprintLibrary")
 local WidgetLayoutLibrary = import("WidgetLayoutLibrary")
+local BusyGamePlayLibrary = import("BusyGamePlayLibrary")
 
-
+local CUT_MASK_DISPLAY_TIME = 1.2  -- 刀光显示的时长
+local CUT_MASK_FADEOUT_TIME = 0.6  -- 刀光开始渐隐的时间点
 
 --- @class PreCookCenterWidget
 --- @field ImgContainer table
 --- @field ImgCookMaterial table
+--- @field BtnMain table
 local PreCookCenterWidget = {}
 
 function PreCookCenterWidget:ctor()
-    self.mouse_tracks = {}
+    self.mouse_tracks = {}      -- 记录当前鼠标的轨迹
+    self.rendering_tracks = {}  -- 正在被渲染的刀光
     self.is_pressed = false
 end
 
@@ -19,20 +23,20 @@ end
 function PreCookCenterWidget:OnInitialized()
     self.bHasScriptImplementedTick = true
 
-    self.BtnMain.OnReleased:Add(function()
+    self:BP_BindLuaEnhancedInput(self.IA_TouchBegin, function()
-        -- self.bHasScriptImplementedTick = false
-        self.is_pressed = false
-        print("release")
-    end)
-    self.BtnMain.OnPressed:Add(function()
-        self.mouse_tracks = {}
         self.is_pressed = true
-        -- self.bHasScriptImplementedTick = true
+        self.mouse_tracks = {}
-        print("pressed")
+        self.rendering_tracks = {self.mouse_tracks}
+        print("new track start")
     end)
-    -- self.BtnMain.OnClicked:Add(function()
+
-    --     print("onclicked")
+    self:BP_BindLuaEnhancedInput(self.IA_TouchEnd, function()
-    -- end)
+        self.is_pressed = false
+        self.mouse_tracks = {}
+        print("track end")
+    end)
+
+    self.BtnMain:SetVisibility(ESlateVisibility.Collapsed)
 end
 
 function PreCookCenterWidget:Construct()
@@ -66,110 +70,154 @@ function PreCookCenterWidget:AddCookMaterial(pre_cook_material_id)
     self.ImgCookMaterial:SetVisibility(ESlateVisibility.SelfHitTestInvisible)
 end
 
+--- 从起点到终点画一条线，以这条线为新的x坐标轴，将所有的点坐标映射到新坐标系下
+local function TransformCurveToEndpointAxes(points)
+    local A = points[1]
+    local B = points[#points]
 
-local function UpdateOldMouseTrack(old_mouse_tracks, delta_time)
+    -- 计算向量AB
-    local new_mouse_tracks = {}
+    local dx = B.X - A.X
-    -- local new_track = {x=fixed_x, y=fixed_y, remain=1.0}
+    local dy = B.Y - A.Y
-    for _, track in pairs(old_mouse_tracks) do
+    local len = math.sqrt(dx * dx + dy * dy)
-        track.remain = track.remain - delta_time
+    if len == 0 then
-        if track.remain > 0 then
+        return {}
-            table.insert(new_mouse_tracks, track)
+        -- error("Start and end points are the same, cannot define X-axis.")
+    end
+
+    -- 计算X轴单位向量
+    local ux = dx / len
+    local uy = dy / len
+
+    -- 计算Y轴单位向量（逆时针旋转90度）
+    local vx = -uy
+    local vy = ux
+
+    -- 映射所有点到新坐标系
+    local new_points = {}
+    for i, point in ipairs(points) do
+        local apx = point.X - A.X
+        local apy = point.Y - A.Y
+        local new_x = apx * ux + apy * uy  -- 点积与X轴单位向量
+        local new_y = apx * vx + apy * vy  -- 点积与Y轴单位向量
+        new_points[i] = {X = new_x, Y = new_y}
+    end
+
+    return new_points
+end
+
+
+--- 将曲线的Y坐标规范到(-0.5，0.5)的范围内，供材质使用
+local function NormalizeCurveYToHalfRange(points)
+    if #points < 2 then return end
+    local length = points[#points].X - points[1].X
+    for _, point in pairs(points) do
+        point.Y = - point.Y / length  -- 临时加个取反
+        point.X = point.X / length
+    end
+    return points
+end
+
+
+local function UpdateCutMaskData(rendering_tracks, delta_time)
+    local new_visible_tracks = {}
+    for _, track in ipairs(rendering_tracks) do
+        local is_visible = false
+        for _, point in pairs(track) do
+            local remain = math.max(point.remain - delta_time, 0)
+            point.remain = remain
+            if remain > 0 then is_visible = true end
+        end
+        if is_visible then
+            table.insert(new_visible_tracks, track)
         end
     end
-    return new_mouse_tracks
+    return new_visible_tracks
 end
 
---- 将鼠标的轨迹坐标规范到以起始点到终点所连直线为x轴的坐标系下
+local function DrawCutMaskImage(widget, mouse_tracks)
-local function NormalizeTrackParam(mouse_tracks)
-
-end
-
---- 根据指定点坐标，求解三次样条参数
-local function GetSplineParams(normalize_params)
-
-end
-
-local function UpdateCutMaskByTracks(widget, mouse_tracks)
     local FVector2D = import("Vector2D")
     local FWidgetTransform = import("WidgetTransform")
-    if #mouse_tracks < 2 then return end
+    -- 设置图片合理的位移、旋转、缩放的参数
-
     local translation, scale = FVector2D(), FVector2D()
     local render_transform = FWidgetTransform()
     local first_point, last_point = mouse_tracks[1], mouse_tracks[#mouse_tracks]
     local delta_x = last_point.X - first_point.X
     local delta_y = last_point.Y - first_point.Y
-    local mask_length = (delta_x^2 + delta_y^2)^0.5
+    local mask_length = (delta_x^2 + delta_y^2)^0.5  -- 轨迹长度，确定缩放参数
-
+    translation.X, translation.Y = first_point.X, first_point.Y  -- 第一个点确定图片唯一
-
-
-    translation.X, translation.Y = first_point.X, first_point.Y
     scale.X, scale.Y = mask_length / 512, 1
     render_transform.Scale = scale
     render_transform.Translation = translation
-    render_transform.Angle = (math.atan(delta_y, delta_x) / (2 * math.pi)) * 360
+    render_transform.Angle = (math.atan(delta_y, delta_x) / (2 * math.pi)) * 360  -- 第一个点与最后一个点连线确定图片旋转角度
-    -- render_transform.Scale = FVector2D(mask_length / 512, 1)
-    print(render_transform.Angle, math.atan(delta_y, delta_x))
 
     widget:SetRenderTransform(render_transform)
---[[
-
-	/** The amount to translate the widget in slate units */
-	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Transform, meta=( Delta = "1" ))
-	FVector2D Translation;
-
-	/** The scale to apply to the widget */
-	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Transform, meta=( UIMin = "-5", UIMax = "5", Delta = "0.05" ))
-	FVector2D Scale;
-
-	/** The amount to shear the widget in slate units */
-	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Transform, meta=( UIMin = "-89", ClampMin = "-89", UIMax = "89", ClampMax = "89", Delta = "1" ))
-	FVector2D Shear;
-
-	/** The angle in degrees to rotate */
-	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Transform, meta=( UIMin = "-180", UIMax = "180", Delta = "1" ))
-	float Angle;
-
-]]
-
 end
 
+
+-- 更新刀痕的材质
+local function UpdateCusMaskMaterial(widget, texture, mouse_track)
+    local transformed_tracks = TransformCurveToEndpointAxes(mouse_track)
+    local normalize_tracks = NormalizeCurveYToHalfRange(transformed_tracks)
+
+    local offsets = {}
+    for _, track in ipairs(normalize_tracks) do
+        table.insert(offsets, track.Y)
+    end
+
+    BusyGamePlayLibrary.UpdateTextureBuffer(texture, offsets)
+
+    local material = widget:GetDynamicMaterial()
+    material:SetTextureParameterValue("Param", texture)
+    material:SetScalarParameterValue("VertexCount", #offsets)
+    material:SetScalarParameterValue("SourceWidth", 512)
+end
+
+function PreCookCenterWidget:GetValidCutMaskWidget()
+    return self.ImgMask
+end
+
+function PreCookCenterWidget:ResetAllCutMaskWidget()
+end
+
+
 function PreCookCenterWidget:Tick(geometry, delta_time)
+    -- 计算鼠标点被限定在该区域下的坐标
+
     local size = SlateBlueprintLibrary.GetLocalSize(geometry)
     local cursor_pos = WidgetLayoutLibrary.GetMousePositionOnViewport(self)
     local left_top = SlateBlueprintLibrary.GetLocalTopLeft(geometry)
-    local fixed_x = math.min(math.max(cursor_pos.X - left_top.X, 0), size.X)
-    local fixed_y = math.min(math.max(cursor_pos.Y - left_top.Y, 0), size.Y)
 
-    local mouse_tracks = UpdateOldMouseTrack(self.mouse_tracks, delta_time)
+    -- local fixed_x = math.min(math.max(cursor_pos.X - left_top.X, 0), size.X)
+    -- local fixed_y = math.min(math.max(cursor_pos.Y - left_top.Y, 0), size.Y)
 
+    local fixed_x, fixed_y = cursor_pos.X - left_top.X, cursor_pos.Y - left_top.Y
+    if fixed_x < 0 or fixed_x > size.X or fixed_y < 0 or fixed_y > size.Y then return end
+
+
+    -- 更新鼠标移动轨迹
     if self.is_pressed then
-        table.insert(mouse_tracks, {X=fixed_x, Y=fixed_y, remain=0.5})
+        local last_point = self.mouse_tracks[#self.mouse_tracks]
+        if not last_point or math.abs(last_point.X - fixed_x) > 1 or math.abs(last_point.Y - fixed_y) > 1 then
+            table.insert(self.mouse_tracks, {X=fixed_x, Y=fixed_y, remain=0.5})
+        end
     end
 
-    -- 计算样条参数
+    -- 更新正在渲染的轨迹数据
-    local normalize_params = NormalizeTrackParam(mouse_tracks)
+    local rendering_tracks = UpdateCutMaskData(self.rendering_tracks, delta_time)
-    local A, B, C, D = GetSplineParams(normalize_params)  -- Ax^3 + Bx^2 + Cx + D
 
-    -- 计算划痕位置
+    -- 绘制刀迹
+    for _, track in ipairs(rendering_tracks) do
+        if #track > 2 then
+            local widget = self:GetValidCutMaskWidget()
+            DrawCutMaskImage(widget, track)
+            -- UpdateCusMaskMaterial(widget, self.DataTexture, track)
+        end
+    end
 
-    UpdateCutMaskByTracks(self.ImgMask, mouse_tracks)
+    -- print("Ticking", #rendering_tracks)
 
-    self.mouse_tracks = mouse_tracks
+    self.rendering_tracks = rendering_tracks
-
-
-    -- print(fixed_x, fixed_y, #self.mouse_tracks)
 end
 
 
-
--- function PreCookCenterWidget:LuaMouseButtonDown()
---     print("on mouse button down")
--- end
-
--- function PreCookCenterWidget:LuaMouseButtonUp()
---     print("on mouse button up")
--- end
-
-
 return Class(nil, nil, PreCookCenterWidget)

Source/BusyRabbit/Private/BusyGamePlayLibrary.cpp

@@ -83,9 +83,26 @@ bool UBusyGamePlayLibrary::GetCookMaterialStateConfig(const FName& RowName, FBus
 	return GetTableConfig<FBusyCookMaterialStateConfig>(TEXT("CookMaterialStateConfig"), RowName, RowData);
 }
 
-FLuaBPVar UBusyGamePlayLibrary::TestTable(const FName& RowName){
+FLuaBPVar UBusyGamePlayLibrary::CreateTextureBuffer(UObject* WorldContextObject){
-	UDataTable* Table = UBusyGamePlayLibrary::GetGameDataTable("CookMaterialStateConfig");
+	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-	auto Config = Table->FindRow<FTableRowBase>(RowName, "", true);
+	auto DataTexture = UTexture2D::CreateTransient(512, 1, PF_R32_FLOAT);
-
+	DataTexture->Filter = TF_Trilinear;
-	return FLuaBPVar();
+	DataTexture->AddressX = TA_Clamp;
+	DataTexture->AddressY = TA_Clamp;
+	DataTexture->UpdateResource();
+	return ULuaBlueprintLibrary::CreateVarFromObject(WorldContextObject, DataTexture);
+}
+
+void UBusyGamePlayLibrary::UpdateTextureBuffer(UTexture2D *DataTexture, TArray<float> FloatData){
+	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD>д<EFBFBD><D0B4>
+	DataTexture->GetPlatformData()->Mips[0];
+	FTexture2DMipMap& Mip = DataTexture->GetPlatformData()->Mips[0];
+	void* Data = Mip.BulkData.Lock(LOCK_READ_WRITE);
+
+	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD><DDB8>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD><EFBFBD>
+	FMemory::Memcpy(Data, FloatData.GetData(), FloatData.Num() * sizeof(float));
+
+	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+	Mip.BulkData.Unlock();
+	DataTexture->UpdateResource();
 }

Source/BusyRabbit/Private/Core/PW_UserWidget.cpp

@@ -4,6 +4,8 @@
 #include "Core/PW_UserWidget.h"
 #include "Core/UI/PW_UIHud.h"
 #include "slua.h"
+#include "EnhancedInput/Public/EnhancedInputSubsystems.h"
+#include "EnhancedInput/Public/EnhancedInputComponent.h"
 
 UPW_SimpleWidget::UPW_SimpleWidget():bVisible(true){
 	bVisible = true;
@@ -36,7 +38,6 @@ FLuaWidgetEventHandle UPW_SimpleWidget::BP_BindLuaEvent(const FName& EventName,
 	TMap<int32, slua::LuaVar>& FunctionPool = LuaFuncMappings.FindOrAdd(EventName);
 	HandleIndex += 1;
 	FunctionPool.Add(HandleIndex, InLuaFunction.value);
-	//FunctionPool[HandleIndex] = InLuaFunction.value;
 	Handle.EventName = EventName;
 	Handle.HandleIndex = HandleIndex;
 	return Handle;
@@ -65,29 +66,22 @@ void UPW_SimpleWidget::BP_EmitLuaEvent(const FName& EventName, const FLuaBPVar&
 	}
 }
 
-FReply UPW_SimpleWidget::NativeOnMouseButtonDown(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent){
+void UPW_SimpleWidget::BP_BindLuaEnhancedInput(UInputAction* Action, FLuaBPVar Callback) {
-	slua::LuaVar SelfTable = GetSelfTable();
+	UEnhancedInputComponent* EnhancedInput;
-	if (SelfTable.isTable()) {
+	if (!Action) return;
-		slua::LuaVar LuaCallback = SelfTable.getFromTable<slua::LuaVar, FString>(TEXT("LuaMouseButtonDown"));
+
-		if (LuaCallback.isFunction()) {
+	EnhancedInput = CastChecked<UEnhancedInputComponent>(GetOwningPlayer()->InputComponent);
-			LuaCallback.call();
+	if (!EnhancedInput) return;
-		}
+
-	}
+	EnhancedInput->BindActionInstanceLambda(Action, ETriggerEvent::Triggered, [Callback](const FInputActionInstance& ActionInstance) {
-	return FReply::Unhandled();
+		slua::LuaVar LuaCallback = Callback.value;
-	//return Super::NativeOnMouseButtonDown(InGeometry, InMouseEvent);
+		if (!LuaCallback.isFunction()) return;
+		LuaCallback.call();
+	});
 }
 
-FReply UPW_SimpleWidget::NativeOnMouseButtonUp(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent){
+
-	slua::LuaVar SelfTable = GetSelfTable();
+
-	if (SelfTable.isTable()) {
-		slua::LuaVar LuaCallback = SelfTable.getFromTable<slua::LuaVar, FString>(TEXT("LuaMouseButtonUp"));
-		if (LuaCallback.isFunction()) {
-			LuaCallback.call();
-		}
-	}
-	return FReply::Unhandled();
-	//return Super::NativeOnMouseButtonUp(InGeometry, InMouseEvent);
-}
 
 void UPW_UserWidget::BP_Close(){
 	APW_UIHud* Hud = Cast<APW_UIHud>(GetPlayerContext().GetHUD());
@@ -105,12 +99,33 @@ void UPW_UserWidget::FrameWorkSetVisible(bool InVisible){
 	_RefreshVisible();
 }
 
+void UPW_UserWidget::_UpdateInputState(bool bNeedRegister) {
+	APlayerController* PC;
+	UEnhancedInputLocalPlayerSubsystem* Subsystem;
+
+	if (!InputMappingContext) return;
+
+	PC = GetOwningPlayer();
+	if (!PC) return;
+
+	Subsystem = ULocalPlayer::GetSubsystem<UEnhancedInputLocalPlayerSubsystem>(PC->GetLocalPlayer());
+	if (!Subsystem) return;
+
+	if (bNeedRegister) {
+		Subsystem->AddMappingContext(InputMappingContext, 0);
+	}
+	else {
+		Subsystem->RemoveMappingContext(InputMappingContext);
+	}
+}
+
 void UPW_UserWidget::_RefreshVisible(){
-	bool FinalVisible = bFrameWorkVisible && bVisible;
+	bool bFinalVisible = bFrameWorkVisible && bVisible;
-	if (FinalVisible) {
+	if (bFinalVisible) {
 		SetVisibility(ESlateVisibility::SelfHitTestInvisible);
 	}
 	else {
 		SetVisibility(ESlateVisibility::Collapsed);
 	}
+	_UpdateInputState(bFinalVisible);
 }

Source/BusyRabbit/Private/Core/UI/PW_UILayer.cpp

@@ -65,6 +65,7 @@ void UPW_UILayer::PopWidget(const UPW_UserWidget* WidgetInst){
 		}
 	}
 	for (i = 0; i < NeedRemoveWidgets.Num(); ++i) {
+		NeedRemoveWidgets[i]->FrameWorkSetVisible(false);
 		NeedRemoveWidgets[i]->RemoveFromParent();
 	}
 	if (NeedShowWidget) {

Source/BusyRabbit/Public/BusyGamePlayLibrary.h

@@ -60,6 +60,10 @@ public:
 	static bool GetCookMaterialStateConfig(const FName& RowName, FBusyCookMaterialStateConfig& RowData);
 	
 	UFUNCTION(BlueprintPure)
-	static FLuaBPVar TestTable(const FName& RowName);
+	static FLuaBPVar CreateTextureBuffer(UObject* WorldContextObject);
+
+	UFUNCTION(BlueprintCallable)
+	static void UpdateTextureBuffer(UTexture2D* DataTexture, TArray<float> FloatData);
+
 
 };

Source/BusyRabbit/Public/Core/PW_UserWidget.h

@@ -51,10 +51,8 @@ public:
 	UFUNCTION(BlueprintCallable)
 	void BP_EmitLuaEvent(const FName& EventName, const FLuaBPVar& InLuaArgs);
 
-public:
+	UFUNCTION(BlueprintCallable)
-	virtual FReply NativeOnMouseButtonDown(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)override;
+	void BP_BindLuaEnhancedInput(class UInputAction* Action, FLuaBPVar Callback);
-
-	virtual FReply NativeOnMouseButtonUp(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)override;
 
 
 public:
@@ -73,8 +71,7 @@ protected: // lua相关
  * 
  */
 UCLASS()
-class BUSYRABBIT_API UPW_UserWidget : public UPW_SimpleWidget
+class BUSYRABBIT_API UPW_UserWidget : public UPW_SimpleWidget{
-{
 	GENERATED_BODY()
 public:
 	UPROPERTY(BlueprintReadOnly, EditDefaultsOnly, DisplayName="是否全局唯一")
@@ -84,6 +81,9 @@ public:
 	UPROPERTY(BlueprintReadOnly, EditDefaultsOnly)
 	EWidgetLayoutType LayoutType;
 
+	UPROPERTY(EditDefaultsOnly, Category = "Input")
+	TObjectPtr<class UInputMappingContext> InputMappingContext;
+
 public:
 	UFUNCTION(BlueprintCallable)
 	void BP_Close();
@@ -95,6 +95,8 @@ public:
 	void FrameWorkSetVisible(bool InVisible);
 
 protected:
+	void _UpdateInputState(bool bNeedRegister);
+
 	void _RefreshVisible();
 
 protected: