feat: OnAttack behavior (#1853)

Adds the `OnAttack` property behavior starting node.
Tested that having the node allows the model to be attacked to trigger the start of behaviors

dGame/dComponents/DestroyableComponent.cpp

@@ -30,6 +30,7 @@
 #include "CharacterComponent.h"
 #include "PossessableComponent.h"
 #include "PossessorComponent.h"
+#include "ModelComponent.h"
 #include "InventoryComponent.h"
 #include "dZoneManager.h"
 #include "WorldConfig.h"
@@ -82,6 +83,7 @@ DestroyableComponent::DestroyableComponent(Entity* parent) : Component(parent) {
 	m_DamageCooldownTimer = 0.0f;
 
 	RegisterMsg<GetObjectReportInfo>(this, &DestroyableComponent::OnGetObjectReportInfo);
+	RegisterMsg<GameMessages::SetFaction>(this, &DestroyableComponent::OnSetFaction);
 }
 
 DestroyableComponent::~DestroyableComponent() {
@@ -579,6 +581,14 @@ void DestroyableComponent::Damage(uint32_t damage, const LWOOBJID source, uint32
 		return;
 	}
 
+	// Client does the same check, so we're doing it too
+	auto* const modelComponent = m_Parent->GetComponent<ModelComponent>();
+	if (modelComponent) {
+		modelComponent->OnHit();
+		// Don't actually deal the damage so the model doesn't die
+		return;
+	}
+
 	// If this entity has damage reduction, reduce the damage to a minimum of 1
 	if (m_DamageReduction > 0 && damage > 0) {
 		if (damage > m_DamageReduction) {
@@ -1089,3 +1099,11 @@ bool DestroyableComponent::OnGetObjectReportInfo(GameMessages::GameMsg& msg) {
 
 	return true;
 }
+
+bool DestroyableComponent::OnSetFaction(GameMessages::GameMsg& msg) {
+	auto& modifyFaction = static_cast<GameMessages::SetFaction&>(msg);
+	m_DirtyHealth = true;
+	Game::entityManager->SerializeEntity(m_Parent);
+	SetFaction(modifyFaction.factionID, modifyFaction.bIgnoreChecks);
+	return true;
+}

dGame/dComponents/DestroyableComponent.h

@@ -469,6 +469,7 @@ public:
 	void DoHardcoreModeDrops(const LWOOBJID source);
 
 	bool OnGetObjectReportInfo(GameMessages::GameMsg& msg);
+	bool OnSetFaction(GameMessages::GameMsg& msg);
 
 	static Implementation<bool, const Entity*> IsEnemyImplentation;
 	static Implementation<bool, const Entity*> IsFriendImplentation;

dGame/dComponents/ModelComponent.cpp

@@ -15,14 +15,15 @@
 #include "DluAssert.h"
 
 ModelComponent::ModelComponent(Entity* parent) : Component(parent) {
+	using namespace GameMessages;
 	m_OriginalPosition = m_Parent->GetDefaultPosition();
 	m_OriginalRotation = m_Parent->GetDefaultRotation();
 	m_IsPaused = false;
 	m_NumListeningInteract = 0;
 
 	m_userModelID = m_Parent->GetVarAs<LWOOBJID>(u"userModelID");
-	RegisterMsg(MessageType::Game::REQUEST_USE, this, &ModelComponent::OnRequestUse);
-	RegisterMsg(MessageType::Game::RESET_MODEL_TO_DEFAULTS, this, &ModelComponent::OnResetModelToDefaults);
+	RegisterMsg<RequestUse>(this, &ModelComponent::OnRequestUse);
+	RegisterMsg<ResetModelToDefaults>(this, &ModelComponent::OnResetModelToDefaults);
 }
 
 bool ModelComponent::OnResetModelToDefaults(GameMessages::GameMsg& msg) {
@@ -40,6 +41,14 @@ bool ModelComponent::OnResetModelToDefaults(GameMessages::GameMsg& msg) {
 	m_Speed = 3.0f;
 	m_NumListeningInteract = 0;
 	m_NumActiveUnSmash = 0;
+
+	m_NumActiveAttack = 0;
+	GameMessages::SetFaction set{};
+	set.target = m_Parent->GetObjectID();
+	set.factionID = -1; // Default faction for smashables
+	set.bIgnoreChecks = true; // Remove the attack faction
+	set.Send();
+
 	m_Dirty = true;
 	Game::entityManager->SerializeEntity(GetParent());
 
@@ -297,3 +306,35 @@ void ModelComponent::SetVelocity(const NiPoint3& velocity) const {
 void ModelComponent::OnChatMessageReceived(const std::string& sMessage) {
 	for (auto& behavior : m_Behaviors) behavior.OnChatMessageReceived(sMessage);
 }
+
+void ModelComponent::OnHit() {
+	for (auto& behavior : m_Behaviors) {
+		behavior.OnHit();
+	}
+}
+
+void ModelComponent::AddAttack() {
+	LOG_DEBUG("Adding attack %i", m_NumActiveAttack);
+	m_Dirty = true;
+	if (m_NumActiveAttack == 0) {
+		GameMessages::SetFaction set{};
+		set.target = m_Parent->GetObjectID();
+		set.factionID = 6; // Default faction for smashables
+		set.Send();
+	}
+	m_NumActiveAttack++;
+}
+
+void ModelComponent::RemoveAttack() {
+	LOG_DEBUG("Removing attack %i", m_NumActiveAttack);
+	DluAssert(m_NumActiveAttack > 0);
+	m_Dirty = true;
+	m_NumActiveAttack--;
+	if (m_NumActiveAttack == 0) {
+		GameMessages::SetFaction set{};
+		set.target = m_Parent->GetObjectID();
+		set.factionID = -1; // Default faction for smashables
+		set.bIgnoreChecks = true; // Remove the attack faction
+		set.Send();
+	}
+}

dGame/dComponents/ModelComponent.h

@@ -146,11 +146,21 @@ public:
 
 	void OnChatMessageReceived(const std::string& sMessage);
 
+	void OnHit();
+
 	// Sets the speed of the model
 	void SetSpeed(const float newSpeed) { m_Speed = newSpeed; }
 
 	// Whether or not to restart at the end of the frame
 	void RestartAtEndOfFrame() { m_RestartAtEndOfFrame = true; }
+
+	// Increments the number of strips listening for an attack.
+	// If this is the first strip adding an attack, it will set the factions to the correct values.
+	void AddAttack();
+
+	// Decrements the number of strips listening for an attack.
+	// If this is the last strip removing an attack, it will reset the factions to the default of -1.
+	void RemoveAttack();
 private:
 
 	// Loads a behavior from the database.
@@ -168,6 +178,9 @@ private:
 	// The number of strips listening for a RequestUse GM to come in.
 	uint32_t m_NumListeningInteract{};
 
+	// The number of strips listening for an attack.
+	uint32_t m_NumActiveAttack{};
+
 	// Whether or not the model is paused and should reject all interactions regarding behaviors.
 	bool m_IsPaused{};
 	/**

dGame/dGameMessages/GameMessages.h

@@ -863,5 +863,13 @@ namespace GameMessages {
 
 		NiPoint3 pos{};
 	};
+
+	struct SetFaction : public GameMsg {
+		SetFaction() : GameMsg(MessageType::Game::SET_FACTION) {}
+
+		int32_t factionID{};
+
+		bool bIgnoreChecks{ false };
+	};
 };
 #endif // GAMEMESSAGES_H

dGame/dPropertyBehaviors/PropertyBehavior.cpp

@@ -184,3 +184,7 @@ void PropertyBehavior::Update(float deltaTime, ModelComponent& modelComponent) {
 void PropertyBehavior::OnChatMessageReceived(const std::string& sMessage) {
 	for (auto& state : m_States | std::views::values) state.OnChatMessageReceived(sMessage);
 }
+
+void PropertyBehavior::OnHit() {
+	for (auto& state : m_States | std::views::values) state.OnHit();
+}

dGame/dPropertyBehaviors/PropertyBehavior.h

@@ -42,6 +42,7 @@ public:
 
 	void Update(float deltaTime, ModelComponent& modelComponent);
 	void OnChatMessageReceived(const std::string& sMessage);
+	void OnHit();
 
 private:
 	// The current active behavior state. Behaviors can only be in ONE state at a time.

dGame/dPropertyBehaviors/State.cpp

@@ -170,3 +170,7 @@ void State::Update(float deltaTime, ModelComponent& modelComponent) {
 void State::OnChatMessageReceived(const std::string& sMessage) {
 	for (auto& strip : m_Strips) strip.OnChatMessageReceived(sMessage);
 }
+
+void State::OnHit() {
+	for (auto& strip : m_Strips) strip.OnHit();
+}

dGame/dPropertyBehaviors/State.h

@@ -24,6 +24,7 @@ public:
 	void Update(float deltaTime, ModelComponent& modelComponent);
 
 	void OnChatMessageReceived(const std::string& sMessage);
+	void OnHit();
 private:
 
 	// The strips contained within this state.

dGame/dPropertyBehaviors/Strip.cpp

@@ -118,6 +118,16 @@ void Strip::OnChatMessageReceived(const std::string& sMessage) {
 	}
 }
 
+void Strip::OnHit() {
+	if (m_PausedTime > 0.0f || !HasMinimumActions()) return;
+
+	const auto& nextAction = GetNextAction();
+	if (nextAction.GetType() == "OnAttack") {
+		IncrementAction();
+		m_WaitingForAction = false;
+	}
+}
+
 void Strip::IncrementAction() {
 	if (m_Actions.empty()) return;
 	m_NextActionIndex++;
@@ -259,6 +269,8 @@ void Strip::RemoveStates(ModelComponent& modelComponent) const {
 	if (prevActionType == "OnInteract") {
 		modelComponent.RemoveInteract();
 		Game::entityManager->SerializeEntity(modelComponent.GetParent());
+	} else if (prevActionType == "OnAttack") {
+		modelComponent.RemoveAttack();
 	} else if (prevActionType == "UnSmash") {
 		modelComponent.RemoveUnSmash();
 	}
@@ -336,13 +348,14 @@ void Strip::Update(float deltaTime, ModelComponent& modelComponent) {
 	if (m_NextActionIndex == 0) {
 		if (nextAction.GetType() == "OnInteract") {
 			modelComponent.AddInteract();
-			Game::entityManager->SerializeEntity(entity);
-			m_WaitingForAction = true;
 
 		} else if (nextAction.GetType() == "OnChat") {
-			Game::entityManager->SerializeEntity(entity);
-			m_WaitingForAction = true;
+			// logic here if needed
+		} else if (nextAction.GetType() == "OnAttack") {
+			modelComponent.AddAttack();
 		}
+		Game::entityManager->SerializeEntity(entity);
+		m_WaitingForAction = true;
 	} else { // should be a normal block
 		ProcNormalAction(deltaTime, modelComponent);
 	}

dGame/dPropertyBehaviors/Strip.h

@@ -42,6 +42,7 @@ public:
 	bool HasMinimumActions() const { return m_Actions.size() >= 2; }
 	
 	void OnChatMessageReceived(const std::string& sMessage);
+	void OnHit();
 private:
 	// Indicates this Strip is waiting for an action to be taken upon it to progress to its actions
 	bool m_WaitingForAction{ false };