Add entity invulnerable

src/Entities/Boat.cpp

@@ -33,9 +33,12 @@ void cBoat::SpawnOn(cClientHandle & a_ClientHandle)
 
 
 
-void cBoat::DoTakeDamage(TakeDamageInfo & TDI)
+bool cBoat::DoTakeDamage(TakeDamageInfo & TDI)
 {
-	super::DoTakeDamage(TDI);
+	if (!super::DoTakeDamage(TDI))
+	{
+		return false;
+	}
 
 	if (GetHealth() == 0)
 	{
@@ -50,6 +53,7 @@ void cBoat::DoTakeDamage(TakeDamageInfo & TDI)
 		}
 		Destroy(true);
 	}
+	return true;
 }
 
 

src/Entities/Boat.h

@@ -26,7 +26,7 @@ public:
 	// cEntity overrides:
 	virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
 	virtual void OnRightClicked(cPlayer & a_Player) override;
-	virtual void DoTakeDamage(TakeDamageInfo & TDI) override;
+	virtual bool DoTakeDamage(TakeDamageInfo & TDI) override;
 	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
 	virtual void HandleSpeedFromAttachee(float a_Forward, float a_Sideways) override;
 	

src/Entities/Entity.cpp

@@ -60,6 +60,7 @@ cEntity::cEntity(eEntityType a_EntityType, double a_X, double a_Y, double a_Z, d
 	, m_Mass (0.001)  // Default 1g
 	, m_Width(a_Width)
 	, m_Height(a_Height)
+	, m_InvulnerableTicks(20)
 {
 	cCSLock Lock(m_CSCount);
 	m_EntityCount++;
@@ -294,17 +295,23 @@ void cEntity::SetPitchFromSpeed(void)
 
 
 
-void cEntity::DoTakeDamage(TakeDamageInfo & a_TDI)
+bool cEntity::DoTakeDamage(TakeDamageInfo & a_TDI)
 {
 	if (cRoot::Get()->GetPluginManager()->CallHookTakeDamage(*this, a_TDI))
 	{
-		return;
+		return false;
 	}
 
 	if (m_Health <= 0)
 	{
 		// Can't take damage if already dead
-		return;
+		return false;
+	}
+
+	if (m_InvulnerableTicks > 0)
+	{
+		// Entity is invulnerable
+		return false;
 	}
 
 	if ((a_TDI.Attacker != NULL) && (a_TDI.Attacker->IsPlayer()))
@@ -333,10 +340,13 @@ void cEntity::DoTakeDamage(TakeDamageInfo & a_TDI)
 
 	m_World->BroadcastEntityStatus(*this, esGenericHurt);
 
+	m_InvulnerableTicks = 10;
+
 	if (m_Health <= 0)
 	{
 		KilledBy(a_TDI.Attacker);
 	}
+	return true;
 }
 
 
@@ -511,6 +521,11 @@ void cEntity::SetHealth(int a_Health)
 
 void cEntity::Tick(float a_Dt, cChunk & a_Chunk)
 {
+	if (m_InvulnerableTicks > 0)
+	{
+		m_InvulnerableTicks--;
+	}
+
 	if (m_AttachedTo != NULL)
 	{
 		if ((m_Pos - m_AttachedTo->GetPosition()).Length() > 0.5)

src/Entities/Entity.h

@@ -262,8 +262,8 @@ public:
 	
 	// tolua_end
 	
-	/// Makes this entity take damage specified in the a_TDI. The TDI is sent through plugins first, then applied
-	virtual void DoTakeDamage(TakeDamageInfo & a_TDI);
+	/** Makes this entity take damage specified in the a_TDI. The TDI is sent through plugins first, then applied. If it returns false, the entity hasn't become any damage. */
+	virtual bool DoTakeDamage(TakeDamageInfo & a_TDI);
 	
 	// tolua_begin
 
@@ -391,6 +391,12 @@ public:
 	virtual bool IsSubmerged(void) const{ return m_IsSubmerged; }
 	/** Gets remaining air of a monster */
 	int GetAirLevel(void) const { return m_AirLevel; }
+
+	/** Gets the invulnerable ticks from the entity */
+	int GetInvulnerableTicks(void) const { return m_InvulnerableTicks; }
+
+	/** Set the invulnerable ticks from the entity */
+	void SetInvulnerableTicks(int a_InvulnerableTicks) { m_InvulnerableTicks = a_InvulnerableTicks; }
 	
 	// tolua_end
 	
@@ -493,11 +499,14 @@ private:
 	// Measured in Kilograms (Kg)
 	double m_Mass;
 	
-	/// Width of the entity, in the XZ plane. Since entities are represented as cylinders, this is more of a diameter.
+	// Width of the entity, in the XZ plane. Since entities are represented as cylinders, this is more of a diameter.
 	double m_Width;
 	
-	/// Height of the entity (Y axis)
+	// Height of the entity (Y axis)
 	double m_Height;
+
+	// If a player hunt a entity, the entity become a invulnerable of 20 ticks
+	int m_InvulnerableTicks;
 } ;  // tolua_export
 
 typedef std::list<cEntity *> cEntityList;

src/Entities/Minecart.cpp

@@ -902,18 +902,21 @@ bool cMinecart::TestEntityCollision(NIBBLETYPE a_RailMeta)
 
 
 
-void cMinecart::DoTakeDamage(TakeDamageInfo & TDI)
+bool cMinecart::DoTakeDamage(TakeDamageInfo & TDI)
 {
 	if ((TDI.Attacker != NULL) && TDI.Attacker->IsPlayer() && ((cPlayer *)TDI.Attacker)->IsGameModeCreative())
 	{
 		Destroy();
 		TDI.FinalDamage = GetMaxHealth(); // Instant hit for creative
-		super::DoTakeDamage(TDI);
-		return; // No drops for creative
+		SetInvulnerableTicks(0);
+		return super::DoTakeDamage(TDI);  // No drops for creative
 	}
 
 	m_LastDamage = TDI.FinalDamage;
-	super::DoTakeDamage(TDI);
+	if (!super::DoTakeDamage(TDI))
+	{
+		return false;
+	}
 
 	m_World->BroadcastEntityMetadata(*this);
 
@@ -952,12 +955,13 @@ void cMinecart::DoTakeDamage(TakeDamageInfo & TDI)
 			default:
 			{
 				ASSERT(!"Unhandled minecart type when spawning pickup!");
-				return;
+				return true;
 			}
 		}
 		
 		m_World->SpawnItemPickups(Drops, GetPosX(), GetPosY(), GetPosZ());
 	}
+	return true;
 }
 
 

src/Entities/Minecart.h

@@ -36,7 +36,7 @@ public:
 	// cEntity overrides:
 	virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
 	virtual void HandlePhysics(float a_Dt, cChunk & a_Chunk) override;
-	virtual void DoTakeDamage(TakeDamageInfo & TDI) override;
+	virtual bool DoTakeDamage(TakeDamageInfo & TDI) override;
 	virtual void Destroyed() override;
 	
 	int LastDamage(void) const { return m_LastDamage; }

src/Entities/Player.cpp

@@ -808,14 +808,14 @@ void cPlayer::SetFlying(bool a_IsFlying)
 
 
 
-void cPlayer::DoTakeDamage(TakeDamageInfo & a_TDI)
+bool cPlayer::DoTakeDamage(TakeDamageInfo & a_TDI)
 {
 	if ((a_TDI.DamageType != dtInVoid) && (a_TDI.DamageType != dtPlugin))
 	{
 		if (IsGameModeCreative())
 		{
 			// No damage / health in creative mode if not void or plugin damage
-			return;
+			return false;
 		}
 	}
 
@@ -828,17 +828,19 @@ void cPlayer::DoTakeDamage(TakeDamageInfo & a_TDI)
 			if (!m_Team->AllowsFriendlyFire())
 			{
 				// Friendly fire is disabled
-				return;
+				return false;
 			}
 		}
 	}
 	
-	super::DoTakeDamage(a_TDI);
-	
-	// Any kind of damage adds food exhaustion
-	AddFoodExhaustion(0.3f);
-	
-	SendHealth();
+	if (super::DoTakeDamage(a_TDI))
+	{
+		// Any kind of damage adds food exhaustion
+		AddFoodExhaustion(0.3f);
+		SendHealth();
+		return true;
+	}
+	return false;
 }
 
 
@@ -897,6 +899,7 @@ void cPlayer::KilledBy(cEntity * a_Killer)
 void cPlayer::Respawn(void)
 {
 	m_Health = GetMaxHealth();
+	SetInvulnerableTicks(20);
 	
 	// Reset food level:
 	m_FoodLevel = MAX_FOOD_LEVEL;

src/Entities/Player.h

@@ -498,7 +498,7 @@ protected:
 	virtual void Destroyed(void);
 
 	/** Filters out damage for creative mode/friendly fire */
-	virtual void DoTakeDamage(TakeDamageInfo & TDI) override;
+	virtual bool DoTakeDamage(TakeDamageInfo & TDI) override;
 
 	/** Stops players from burning in creative mode */
 	virtual void TickBurning(cChunk & a_Chunk) override;