Massive reductions in unnecessary network traffic especially during high spam combat fights

- HP Updates now only send to others when HP percentage changes (0-100%)
		- HP Updates were sending excessively even during idle zones when HP wasn't changing at all
	- Attack animations now only send once per second versus up to a hundred times a second per Mob/Client
	- 17,000 OP_ClientUpdate packets per second have been observed in combat scenarios, some of the major culprits have been
		throttled without affecting what the client should see
	- Before and After packet differences under similar load/tests (Packets per second)
		- 7,000 - 8,000 	OP_Animation pps	After: 600-800 pps
		- 13,0000 - 17,000 	OP_MobHealth pps	After: 1-10 pps
		- 15,0000 - 20,000 	OP_ClientUpdate pps	After: 500-1,000 pps
	- Packet reports from a 46 client test here:
		https://gist.github.com/Akkadius/28b7ad2fdd82bdd15ea737c68f404346
	- Servers who use Marquee HP updates will also recieve far less packet spam as they will only be sent when HP changes

changelog.txt

@@ -1,5 +1,20 @@
 EQEMu Changelog (Started on Sept 24, 2003 15:50)
 -------------------------------------------------------
+== 7/9/2017 ==
+Akkadius: Massive reductions in unnecessary network traffic especially during high spam combat fights
+	- HP Updates now only send to others when HP percentage changes (0-100%)
+		- HP Updates were sending excessively even during idle zones when HP wasn't changing at all
+	- Attack animations now only send once per second versus up to a hundred times a second per Mob/Client
+	- 17,000 OP_ClientUpdate packets per second have been observed in combat scenarios, some of the major culprits have been
+		throttled without affecting what the client should see
+	- Before and After packet differences under similar load/tests (Packets per second)
+		- 7,000 - 8,000 	OP_Animation pps	After: 600-800 pps
+		- 13,0000 - 17,000 	OP_MobHealth pps	After: 1-10 pps
+		- 15,0000 - 20,000 	OP_ClientUpdate pps	After: 500-1,000 pps
+	- Packet reports from a 46 client test here:
+		https://gist.github.com/Akkadius/28b7ad2fdd82bdd15ea737c68f404346
+	- Servers who use Marquee HP updates will also recieve far less packet spam as they will only be sent when HP changes
+
 == 7/1/2017 ==
 Akkadius: Resolve issues with NPC's hopping to the ceiling in small corridors
 Akkadius: Improved grounding issues with NPC's during combat

common/eqemu_logsys.h

@@ -86,6 +86,7 @@ enum LogCategory {
 	Login_Server,
 	Client_Login,
 	Headless_Client,
+	HP_Update,
 	MaxCategoryID	/* Don't Remove this*/
 };
 
@@ -135,7 +136,9 @@ static const char* LogCategoryName[LogCategory::MaxCategoryID] = {
 	"Packet :: Server -> Client (Dump)",
 	"Packet :: Client -> Server (Dump)",
 	"Login Server",
-	"Client Login"
+	"Client Login",
+	"Headless Client",
+	"HP Update"
 };
 }
 

zone/attack.cpp

@@ -137,7 +137,10 @@ EQEmu::skills::SkillType Mob::AttackAnimation(int Hand, const EQEmu::ItemInstanc
 	if (Hand == EQEmu::inventory::slotSecondary)	// DW anim
 		type = animDualWield;
 
-	DoAnim(type, 0, false);
+	if (attack_anim_timer.Check()) {
+		DoAnim(type, 0, false);
+	}
+
 	return skillinuse;
 }
 
@@ -3397,8 +3400,6 @@ void Mob::CommonDamage(Mob* attacker, int &damage, const uint16 spell_id, const
 
 		SetHP(GetHP() - damage);
 
-		if (IsClient() && RuleB(Character, MarqueeHPUpdates))
-			this->CastToClient()->SendHPUpdateMarquee();
 
 		if (HasDied()) {
 			bool IsSaved = false;
@@ -3549,8 +3550,11 @@ void Mob::CommonDamage(Mob* attacker, int &damage, const uint16 spell_id, const
 			if (zone->zonemap && zone->zonemap->CheckLoS(glm::vec3(m_Position), new_pos)) { // If we have LoS on the new loc it should be reachable.
 				if (IsNPC()) {
 					// Is this adequate?
+
 					Teleport(new_pos);
-					SendPosUpdate();
+					if (position_update_melee_push_timer.Check()) {
+						SendPosUpdate();
+					}
 				}
 			}
 			else {

zone/client.cpp

@@ -8745,7 +8745,7 @@ void Client::SendHPUpdateMarquee(){
 		return;
 
 	/* Health Update Marquee Display: Custom*/
-	uint32 health_percentage = (uint32)(this->cur_hp * 100 / this->max_hp);
+	int8 health_percentage = (int8)(this->cur_hp * 100 / this->max_hp);
 	if (health_percentage == 100)
 		return;
 

zone/mob.cpp

@@ -114,7 +114,9 @@ Mob::Mob(const char* in_name,
 		mitigation_ac(0),
 		m_specialattacks(eSpecialAttacks::None),
 		fix_z_timer(300),
-		fix_z_timer_engaged(100)
+		fix_z_timer_engaged(100),
+		attack_anim_timer(1000),
+		position_update_melee_push_timer(1000)
 {
 	targeted = 0;
 	tar_ndx=0;
@@ -123,6 +125,8 @@ Mob::Mob(const char* in_name,
 
 	last_z = 0;
 
+	last_hp = 100;
+
 	AI_Init();
 	SetMoving(false);
 	moved=false;
@@ -1299,6 +1303,20 @@ void Mob::CreateHPPacket(EQApplicationPacket* app)
 // sends hp update of this mob to people who might care
 void Mob::SendHPUpdate(bool skip_self)
 {
+
+	int8 current_hp = (max_hp == 0 ? 0 : static_cast<int>(cur_hp * 100 / max_hp));
+
+	Log(Logs::General, Logs::HP_Update, "Mob::SendHPUpdate :: SendHPUpdate %s HP is %i last %i", this->GetCleanName(), current_hp, last_hp);
+	if (current_hp == last_hp) {
+		Log(Logs::General, Logs::HP_Update, "Mob::SendHPUpdate :: Same HP - skipping update");
+		ResetHPUpdateTimer();
+		return;
+	}
+	else {
+		Log(Logs::General, Logs::HP_Update, "Mob::SendHPUpdate :: HP Changed - Send update");
+		last_hp = current_hp;
+	}
+
 	EQApplicationPacket hp_app;
 	Group *group = nullptr;
 

zone/mob.h

@@ -1379,6 +1379,8 @@ protected:
 	Timer flee_timer;
 	Timer fix_z_timer;
 	Timer fix_z_timer_engaged;
+	Timer attack_anim_timer;
+	Timer position_update_melee_push_timer;
 
 	bool pAIControlled;
 	bool roamer;
@@ -1387,6 +1389,8 @@ protected:
 	int wandertype;
 	int pausetype;
 
+	int8 last_hp;
+
 	int cur_wp;
 	glm::vec4 m_CurrentWayPoint;
 	int cur_wp_pause;