34. Listening for Attribute Changes

Project/Source/Gasa/AbilitySystem/GasaAttributeSet.cpp

@@ -8,9 +8,9 @@
 
 UGasaAttributeSet::UGasaAttributeSet()
 {
-	InitHealth( 80.f );
+	InitHealth( 50.f );
 	InitMaxHealth( 100.f );
-	InitMana( 20.f );
+	InitMana( 25.f );
 	InitMaxMana( 50.f );
 }
 

Project/Source/Gasa/GasaCommon.h

@@ -14,6 +14,7 @@
 
 #pragma region Engine Forwards
 struct FInputActionValue;
+struct FOnAttributeChangeData;
 
 class IAbilitySystemInterface;
 
@@ -34,6 +35,8 @@ class UCogWindowManager;
 // Gasa
 
 #pragma region Forwards
+struct FWidgetControllerData;
+
 class ACameraMount;
 class AGasaCharacter;
 class AGasaGameInstance;
@@ -52,8 +55,6 @@ class UGasaSizeBox;
 class UHostWidgetController;
 class UHUDHostWidget;
 class UWidgetController;
-
-struct FWidgetControllerData;
 #pragma endregion Forwards
 
 #pragma region Logging

Project/Source/Gasa/GasaDevOptionsCache.cpp

@@ -12,13 +12,18 @@ void FGasaDevOptionsCache::CachedDevOptions()
 	UGasaDevOptions* DevOpts = GetMutDevOptions();
 
 	Template_PlayerCamera = DevOpts->Template_PlayerCamera.LoadSynchronous();
-	ensureMsgf( Template_PlayerCamera != nullptr, TEXT( "Template_PlayerCamera is null, DO NOT RUN PIE or else you may get a crash if not handled in BP or C++" ) );
+	ensureMsgf(
+	    Template_PlayerCamera != nullptr, TEXT( "Template_PlayerCamera is null, DO NOT RUN PIE or else you may get a crash if not handled in BP or C++" )
+	);
 
 	Template_HUD_HostUI = DevOpts->Template_HUD_HostUI.LoadSynchronous();
 	ensureMsgf( Template_HUD_HostUI != nullptr, TEXT( "Template_HUD_HostUI is null, DO NOT RUN PIE or else you may get a crash if not handled in BP or C++" ) );
 
 	Template_HostWidgetController = DevOpts->Template_HostWidgetController.LoadSynchronous();
-	ensureMsgf( Template_HostWidgetController != nullptr, TEXT( "Template_HostWidgetController is null, DO NOT RUN PIE or else you may get a crash if not handled in BP or C++" ) );
+	ensureMsgf(
+	    Template_HostWidgetController != nullptr,
+	    TEXT( "Template_HostWidgetController is null, DO NOT RUN PIE or else you may get a crash if not handled in BP or C++" )
+	);
 
 	Tag_GlobalPPV = DevOpts->Tag_GlobalPPV;
 }

Project/Source/Gasa/UI/GasaHUD.cpp

@@ -14,6 +14,7 @@ void AGasaHUD::InitHostWidget(FWidgetControllerData const* WidgetControllerData)
 	HostWidgetController = NewObject<UHostWidgetController>(this, GetDevOptions()->Template_HostWidgetController.Get());
 	HostWidgetController->Data = (* WidgetControllerData);
 	HostWidget->SetWidgetController(HostWidgetController);
+	HostWidgetController->BindCallbacksToDependencies();
 	
 	HostWidgetController->BroadcastInitialValues();
 	HostWidget->AddToViewport();

Project/Source/Gasa/UI/HostWIdgetController.cpp

@@ -1,8 +1,34 @@
 #include "HostWidgetController.h"
+#include "AbilitySystem/GasaAbilitySystemComponent_Inlines.h"
 #include "AbilitySystem/GasaAttributeSet.h"
+#include "GameplayEffectTypes.h"
+
+#pragma region Attribute Changed Callbacks
+// Attribute Changed Callbacks are generated by GasaGen/GasaGen_HostWidgetController.cpp
+
+void UHostWidgetController::HealthChanged( FOnAttributeChangeData const& Attribute )
+{
+	Event_OnHealthChanged.Broadcast( Attribute.NewValue );
+}
+
+void UHostWidgetController::MaxHealthChanged( FOnAttributeChangeData const& Attribute )
+{
+	Event_OnMaxHealthChanged.Broadcast( Attribute.NewValue );
+}
+
+void UHostWidgetController::ManaChanged( FOnAttributeChangeData const& Attribute )
+{
+	Event_OnManaChanged.Broadcast( Attribute.NewValue );
+}
+
+void UHostWidgetController::MaxManaChanged( FOnAttributeChangeData const& Attribute )
+{
+	Event_OnMaxManaChanged.Broadcast( Attribute.NewValue );
+}
+#pragma endregion Attribute Changed Callbacks
+
 void UHostWidgetController::BroadcastInitialValues()
 {
-	Super::BroadcastInitialValues();
 	UGasaAttributeSet* GasaAttribs = Cast<UGasaAttributeSet>( Data.Attributes );
 	if ( GasaAttribs )
 	{
@@ -12,3 +38,24 @@ void UHostWidgetController::BroadcastInitialValues()
 		Event_OnMaxManaChanged.Broadcast( GasaAttribs->GetMaxMana() );
 	}
 }
+
+void UHostWidgetController::BindCallbacksToDependencies()
+{
+	UGasaAbilitySystemComp* AbilitySystem = Cast<UGasaAbilitySystemComp>( Data.AbilitySystem );
+	UGasaAttributeSet*      GasaAttribs   = Cast<UGasaAttributeSet>( Data.Attributes );
+
+	FOnGameplayAttributeValueChange& HealthAttributeChangedDelegate =
+	    AbilitySystem->GetGameplayAttributeValueChangeDelegate( GasaAttribs->GetHealthAttribute() );
+	HealthAttributeChangedDelegate.AddUObject( this, &ThisClass::HealthChanged );
+
+	FOnGameplayAttributeValueChange& MaxHealthAttributeChangedDelegate =
+	    AbilitySystem->GetGameplayAttributeValueChangeDelegate( GasaAttribs->GetMaxHealthAttribute() );
+	MaxHealthAttributeChangedDelegate.AddUObject( this, &ThisClass::MaxHealthChanged );
+
+	FOnGameplayAttributeValueChange& ManaAttributeChangedDelegate = AbilitySystem->GetGameplayAttributeValueChangeDelegate( GasaAttribs->GetManaAttribute() );
+	ManaAttributeChangedDelegate.AddUObject( this, &ThisClass::ManaChanged );
+
+	FOnGameplayAttributeValueChange& MaxManaAttributeChangedDelegate =
+	    AbilitySystem->GetGameplayAttributeValueChangeDelegate( GasaAttribs->GetMaxManaAttribute() );
+	MaxManaAttributeChangedDelegate.AddUObject( this, &ThisClass::MaxManaChanged );
+}

Project/Source/Gasa/UI/HostWidgetController.h

@@ -23,9 +23,15 @@ public:
 
 	UPROPERTY( BlueprintAssignable, Category = "Attributes" )
 	FAttributeFloatChangedSig Event_OnMaxManaChanged;
+
+	void HealthChanged( FOnAttributeChangeData const& Data );
+	void MaxHealthChanged( FOnAttributeChangeData const& Data );
+	void ManaChanged( FOnAttributeChangeData const& Data );
+	void MaxManaChanged( FOnAttributeChangeData const& Data );
 #pragma endregion Attribute Events
 
 #pragma region WidgetController
 	void BroadcastInitialValues() override;
+	void BindCallbacksToDependencies() override;
 #pragma endregion WidgetController
 };

Project/Source/Gasa/UI/WidgetController.h

@@ -45,4 +45,5 @@ public:
 
 	UFUNCTION()
 	virtual void BroadcastInitialValues() {};
+	virtual void BindCallbacksToDependencies() {};
 };

Project/Source/GasaGen/GasaGen.cpp

@@ -19,196 +19,6 @@ using namespace gen;
 #include "GasaGen_DevOptionsCache.cpp"
 #include "GasaGen_HostWidgetController.cpp"
 
-void gen_UHostWidgetController()
-{
-	Array<StringCached> attribute_fields = get_gasa_attribute_fields();
-
-	CodeBody ori_HostWidgetController_header = parse_file(path_gasa_ui "HostWidgetController.h");
-	{
-		CodeBody header_body = def_body(ECode::Global_Body);
-
-		StrC      str_UHostWidgetController = txt("UHostWidgetController");
-		CodeClass ori_UHostWidgetController = NoCode;
-
-		Code file_code = ori_HostWidgetController_header.begin();
-		for ( ; file_code != ori_HostWidgetController_header.end(); ++ file_code )
-		{
-			if (s32 never_enter = 0; never_enter)
-				found: break;
-
-			switch (file_code->Type)
-			{
-			default:
-				header_body.append(file_code);
-				continue;
-
-			case ECode::Class:
-				if ( ! file_code->Name.starts_with(str_UHostWidgetController))
-					continue;
-				ori_UHostWidgetController = file_code.cast<CodeClass>();
-				++ file_code;
-				goto found;
-
-			case ECode::Preprocess_Include:
-				header_body.append(file_code);
-
-				if ( file_code->Content.starts_with(txt("HostWidgetController.generated.h")))
-				{
-					header_body.append(fmt_newline);
-					header_body.append(fmt_newline);
-				}
-			continue;
-
-			case ECode::Untyped:
-				header_body.append(file_code);
-
-				if (file_code->Content.starts_with( txt("DECLARE_"))
-				||	file_code->Content.starts_with( txt("UCLASS"))
-				)
-					header_body.append(fmt_newline);
-			continue;
-			}
-		}
-
-		CodeBody attribute_events = def_body(ECode::Class_Body);
-		{
-			attribute_events.append( def_comment( txt("Attribute Events are generated by GasaGen/GasaGen_HostWidgetController.cpp")));
-			attribute_events.append(fmt_newline);
-
-			for ( s32 id = 0; id < attribute_fields.num(); )
-			{
-				StringCached attribute_field = attribute_fields[id];
-
-				attribute_events.append( code_str(
-					UPROPERTY(BlueprintAssignable, Category = "Attributes")
-				));
-				attribute_events.append(fmt_newline);
-				attribute_events.append( parse_variable(
-					token_fmt( "field", (StrC) attribute_field, stringize( FAttributeFloatChangedSig Event_On<field>Changed; ))
-				));
-
-				++ id;
-				if ( id < attribute_fields.num() )
-				{
-					attribute_events.append(fmt_newline);
-				}
-			}
-		}
-
-		CodeClass new_UHostWidgetController = ori_UHostWidgetController.duplicate().cast<CodeClass>();
-		CodeBody  new_body                  = def_body(ECode::Class_Body);
-		for (Code	code = ori_UHostWidgetController->Body.begin();
-					code != ori_UHostWidgetController->Body.end();
-					++ code )
-		{
-			switch (code->Type)
-			{
-				default:
-					new_body.append(code);
-					continue;
-
-				case ECode::Preprocess_Pragma:
-				{
-					local_persist bool found = false;
-					if (found)
-					{
-						new_body.append(code);
-						continue;
-					}
-
-					CodePragma pragma = code.cast<CodePragma>();
-					if ( pragma->Content.starts_with(txt("region Attribute Events")) )
-					{
-						new_body.append(pragma);
-						++ code;
-
-						new_body.append(attribute_events);
-
-						while (code->Type != ECode::Preprocess_Pragma
-							|| ! code->Content.starts_with(txt("endregion Attribute Events"))) 
-							++ code;
-
-						new_body.append( code );
-						found = true;
-					}
-				}
-				break;
-
-				case ECode::Untyped:
-					new_body.append(code);
-
-					if (code->Content.starts_with( txt("GENERATED_BODY")))
-						new_body.append(fmt_newline);
-			}
-		}
-		new_body.append(fmt_newline);
-		new_UHostWidgetController->Body = new_body;
-		header_body.append(new_UHostWidgetController);
-
-		for (; file_code != ori_HostWidgetController_header.end(); ++ file_code)
-		{
-			header_body.append(file_code);
-		}
-
-		Builder header = Builder::open(path_gasa_ui "HostWidgetController.h");
-		header.print(header_body);
-		header.write();
-		format_file(path_gasa_ui "HostWidgetController.h");
-	}
-
-	CodeBody ori_HostWidgetController_source = parse_file(path_gasa_ui "HostWidgetController.cpp");
-	{
-		CodeBody source_body = def_body(ECode::Global_Body);
-
-		CodeBody broadcast_calls = def_body(ECode::Function_Body);
-		for (StringCached field : attribute_fields)
-		{
-			broadcast_calls.append( code_fmt( "field", (StrC)field,
-				stringize( Event_On<field>Changed.Broadcast( GasaAttribs->Get<field>() ); )
-			));
-		}
-
-		CodeFn BroadcastInitialValues = parse_function( token_fmt( "broadcast_calls", (StrC)broadcast_calls.to_string(),
-		stringize(
-			void UHostWidgetController::BroadcastInitialValues()
-			{
-				Super::BroadcastInitialValues();
-				// Thiis function is managed by: GasaGen/GasaGen_HostWidgetController.cpp
-
-				UGasaAttributeSet* GasaAttribs = Cast<UGasaAttributeSet>(Data.Attributes);
-				if (GasaAttribs)
-				{
-					<broadcast_calls>
-				}
-			})
-		));
-
-		for ( Code code : ori_HostWidgetController_source)
-		{
-			switch (code->Type)
-			{
-				case ECode::Function:
-					CodeFn function_def = code.cast<CodeFn>();
-
-					if ( String::are_equal(function_def->Name, BroadcastInitialValues->Name)
-					&&	function_def->Params.is_equal(BroadcastInitialValues->Params))
-					{
-						code = BroadcastInitialValues;
-						log_fmt("Swapped: %S", BroadcastInitialValues->Name);
-					}
-				break;
-			}
-
-			source_body.append(code);
-		}
-
-		Builder source = Builder::open(path_gasa_ui "HostWidgetController.cpp");
-		source.print(source_body);
-		source.write();
-		format_file(path_gasa_ui "HostWidgetController.cpp");
-	}
-}
-
 int gen_main()
 {
 	gen::init();

Project/Source/GasaGen/GasaGen_HostWidgetController.cpp

@@ -0,0 +1,304 @@
+#if GASA_INTELLISENSE_DIRECTIVES
+#pragma once
+#define GEN_EXPOSE_BACKEND
+#include "gen.hpp"
+#include "gen.builder.hpp"
+#include "GasaGenCommon.cpp"
+#endif
+
+void gen_UHostWidgetController()
+{
+	Array<StringCached> attribute_fields = get_gasa_attribute_fields();
+
+	CodeBody ori_HostWidgetController_header = parse_file(path_gasa_ui "HostWidgetController.h");
+	{
+		CodeBody header_body = def_body(ECode::Global_Body);
+
+		StrC      str_UHostWidgetController = txt("UHostWidgetController");
+		CodeClass ori_UHostWidgetController = NoCode;
+
+		Code file_code = ori_HostWidgetController_header.begin();
+		for ( ; file_code != ori_HostWidgetController_header.end(); ++ file_code )
+		{
+			if (s32 never_enter = 0; never_enter)
+				found: break;
+
+			switch (file_code->Type)
+			{
+			default:
+				header_body.append(file_code);
+				continue;
+
+			case ECode::Class:
+				if ( ! file_code->Name.starts_with(str_UHostWidgetController))
+					continue;
+				ori_UHostWidgetController = file_code.cast<CodeClass>();
+				++ file_code;
+				goto found;
+
+			case ECode::Preprocess_Include:
+				header_body.append(file_code);
+
+				if ( file_code->Content.starts_with(txt("HostWidgetController.generated.h")))
+				{
+					header_body.append(fmt_newline);
+					header_body.append(fmt_newline);
+				}
+			continue;
+
+			case ECode::Untyped:
+				header_body.append(file_code);
+
+				if (file_code->Content.starts_with( txt("DECLARE_"))
+				||	file_code->Content.starts_with( txt("UCLASS"))
+				)
+					header_body.append(fmt_newline);
+			continue;
+			}
+		}
+
+		CodeBody attribute_events = def_body(ECode::Class_Body);
+		{
+			attribute_events.append( def_comment( txt("Attribute Events are generated by GasaGen/GasaGen_HostWidgetController.cpp")));
+			attribute_events.append(fmt_newline);
+
+			for ( s32 id = 0; id < attribute_fields.num(); ++id )
+			{
+				StringCached attribute_field = attribute_fields[id];
+
+				attribute_events.append( code_str(
+					UPROPERTY(BlueprintAssignable, Category = "Attributes")
+				));
+				attribute_events.append(fmt_newline);
+				attribute_events.append( parse_variable(
+					token_fmt( "field", (StrC) attribute_field, stringize( FAttributeFloatChangedSig Event_On<field>Changed; ))
+				));
+				attribute_events.append(fmt_newline);
+			}
+
+			for ( s32 id = 0; id < attribute_fields.num(); ++id )
+			{
+				StringCached attribute_field = attribute_fields[id];
+
+				attribute_events.append( parse_function(
+					token_fmt( "field", (StrC) attribute_field, stringize( void <field>Changed(FOnAttributeChangeData const& Data); ))
+				));
+			}
+		}
+
+		CodeClass new_UHostWidgetController = ori_UHostWidgetController.duplicate().cast<CodeClass>();
+		CodeBody  new_body                  = def_body(ECode::Class_Body);
+		for (Code	code = ori_UHostWidgetController->Body.begin();
+					code != ori_UHostWidgetController->Body.end();
+					++ code )
+		{
+			switch (code->Type)
+			{
+				default:
+					new_body.append(code);
+					continue;
+
+				case ECode::Preprocess_Pragma:
+				{
+					local_persist bool found = false;
+					if (found)
+					{
+						new_body.append(code);
+						continue;
+					}
+
+					CodePragma pragma = code.cast<CodePragma>();
+					if ( pragma->Content.starts_with(txt("region Attribute Events")) )
+					{
+						new_body.append(pragma);
+						++ code;
+
+						new_body.append(attribute_events);
+
+						while (code->Type != ECode::Preprocess_Pragma
+							|| ! code->Content.starts_with(txt("endregion Attribute Events"))) 
+							++ code;
+
+						new_body.append( code );
+						found = true;
+					}
+				}
+				break;
+
+				case ECode::Untyped:
+					new_body.append(code);
+
+					if (code->Content.starts_with( txt("GENERATED_BODY")))
+						new_body.append(fmt_newline);
+			}
+		}
+		new_body.append(fmt_newline);
+		new_UHostWidgetController->Body = new_body;
+		header_body.append(new_UHostWidgetController);
+
+		for (; file_code != ori_HostWidgetController_header.end(); ++ file_code)
+		{
+			header_body.append(file_code);
+		}
+
+		Builder header = Builder::open(path_gasa_ui "HostWidgetController.h");
+		header.print(header_body);
+		header.write();
+		format_file(path_gasa_ui "HostWidgetController.h");
+	}
+
+	CodeBody ori_HostWidgetController_source = parse_file(path_gasa_ui "HostWidgetController.cpp");
+	{
+		CodeBody source_body = def_body(ECode::Global_Body);
+
+		CodeFn BroadcastInitialValues = NoCode;
+		{
+			CodeBody broadcast_calls = def_body(ECode::Function_Body);
+			for (StringCached field : attribute_fields)
+			{
+				broadcast_calls.append( code_fmt( "field", (StrC)field,
+					stringize( Event_On<field>Changed.Broadcast( GasaAttribs->Get<field>() ); )
+				));
+			}
+
+			BroadcastInitialValues = parse_function( token_fmt(
+				"broadcast_calls",   (StrC)broadcast_calls.to_string(),
+				"generation_notice", txt("\n// This function is managed by: GenGasa/GenGasa_HostWidgetController.cpp\n\n"),
+			stringize(
+				void UHostWidgetController::BroadcastInitialValues()
+				{
+					<generation_notice>
+
+					UGasaAttributeSet* GasaAttribs = Cast<UGasaAttributeSet>(Data.Attributes);
+					if (GasaAttribs)
+					{
+						<broadcast_calls>
+					}
+
+					BindCallbacksToDependencies();
+				})
+			));
+		}
+
+		CodeFn BindCallbacksToDependencies = NoCode;
+		{
+			CodeBody bindings = def_body(ECode::Function_Body);
+			bindings.append(fmt_newline);
+			bindings.append(fmt_newline);
+			for (StringCached field : attribute_fields)
+			{
+				bindings.append( code_fmt( "field", (StrC)field,
+				stringize(
+					FOnGameplayAttributeValueChange& <field>AttributeChangedDelegate = AbilitySystem->GetGameplayAttributeValueChangeDelegate(GasaAttribs->Get<field>Attribute());
+					<field>AttributeChangedDelegate.AddUObject(this, &ThisClass::<field>Changed);
+				)));
+				bindings.append(fmt_newline);
+				bindings.append(fmt_newline);
+			}
+
+			BindCallbacksToDependencies = parse_function( token_fmt(
+				"generation_notice", txt("\n// This function is managed by: GenGasa/GenGasa_HostWidgetController.cpp\n\n"),
+				"bindings",          (StrC)bindings.to_string(),
+			stringize(
+				void UHostWidgetController::BindCallbacksToDependencies()
+				{
+					<generation_notice>
+
+					UGasaAbilitySystemComp* AbilitySystem = Cast<UGasaAbilitySystemComp>(Data.AbilitySystem);
+					UGasaAttributeSet*      GasaAttribs   = Cast<UGasaAttributeSet>( Data.Attributes );
+
+					<bindings>
+				})
+			));
+		}
+
+		CodeBody attribute_callbacks = def_body(ECode::Global_Body);
+		{
+			attribute_callbacks.append( def_comment(txt("Attribute Changed Callbacks are generated by GasaGen/GasaGen_HostWidgetController.cpp")));
+			attribute_callbacks.append(fmt_newline);
+
+			for ( s32 id = 0; id < attribute_fields.num(); )
+			{
+				StringCached attribute_field = attribute_fields[id];
+
+				attribute_callbacks.append( parse_function( token_fmt(
+					"field", (StrC) attribute_field,
+				stringize(
+					void UHostWidgetController::<field>Changed(FOnAttributeChangeData const& Attribute)
+					{
+						Event_On<field>Changed.Broadcast(Attribute.NewValue);
+					})
+				)));
+
+				++ id;
+				if ( id < attribute_fields.num() )
+				{
+					attribute_callbacks.append(fmt_newline);
+				}
+			}
+		}
+
+		for ( Code code = ori_HostWidgetController_source.begin();
+			code != ori_HostWidgetController_source.end();
+			++ code
+		)
+		{
+			switch (code->Type)
+			{
+				case ECode::Preprocess_Pragma:
+				{
+					local_persist bool found = false;
+					if (found)
+					{
+						source_body.append(code);
+						++ code;
+						continue;
+					}
+
+					CodePragma pragma = code.cast<CodePragma>();
+					if ( pragma->Content.starts_with(txt("region Attribute Changed Callbacks")) )
+					{
+						source_body.append(fmt_newline);
+						source_body.append(pragma);
+						++ code;
+
+						source_body.append(attribute_callbacks);
+
+						while (code->Type != ECode::Preprocess_Pragma
+							|| ! code->Content.starts_with(txt("endregion Attribute Changed Callbacks")))
+							++ code;
+
+						found = true;
+					}
+				}
+				break;
+
+				case ECode::Function:
+					CodeFn function_def = code.cast<CodeFn>();
+
+					if (	String::are_equal(function_def->Name, BroadcastInitialValues->Name)
+						&&	function_def->Params.is_equal(BroadcastInitialValues->Params))
+					{
+						source_body.append(BroadcastInitialValues);
+						log_fmt("Swapped: %S\n", BroadcastInitialValues->Name);
+						continue;
+					}
+					else if (String::are_equal(function_def->Name, BindCallbacksToDependencies->Name)
+						&& 	function_def->Params.is_equal(BindCallbacksToDependencies->Params))
+					{
+						source_body.append(BindCallbacksToDependencies);
+						log_fmt("Swapped: %S\n", BindCallbacksToDependencies->Name);
+						continue;
+					}
+				break;
+			}
+
+			source_body.append(code);
+		}
+
+		Builder source = Builder::open(path_gasa_ui "HostWidgetController.cpp");
+		source.print(source_body);
+		source.write();
+		format_file(path_gasa_ui "HostWidgetController.cpp");
+	}
+}

scripts/.clang-format

@@ -79,7 +79,7 @@ BreakBeforeTernaryOperators: true
 BreakConstructorInitializers: BeforeComma
 BreakStringLiterals: true
 
-ColumnLimit: 240
+ColumnLimit: 160
 
 CompactNamespaces: true