[General] Rework PlayerAttribute packets so they are of minimal size

Previously, whenever a single attribute value changed for a player, that player then sent a PlayerAttribute packet with all values for all 8 attributes.

This did not cause anywhere as much packet spam as PlayerSkill used to, but there was no good reason not to fix it as well.

(cherry picked from commit b0965f094a)

apps/openmw-mp/Script/Functions/Stats.cpp

@@ -408,6 +408,10 @@ void StatsFunctions::SetAttributeBase(unsigned short pid, unsigned short attribu
         return;
 
     player->creatureStats.mAttributes[attributeId].mBase = value;
+
+    if (std::find(player->attributeChanges.attributeIndexes.begin(), player->attributeChanges.attributeIndexes.end(), attributeId) == 
+        player->attributeChanges.attributeIndexes.end())
+        player->attributeChanges.attributeIndexes.push_back(attributeId);
 }
 
 void StatsFunctions::ClearAttributeModifier(unsigned short pid, unsigned short attributeId) noexcept
@@ -419,6 +423,10 @@ void StatsFunctions::ClearAttributeModifier(unsigned short pid, unsigned short a
         return;
 
     player->creatureStats.mAttributes[attributeId].mMod = 0;
+
+    if (std::find(player->attributeChanges.attributeIndexes.begin(), player->attributeChanges.attributeIndexes.end(), attributeId) ==
+        player->attributeChanges.attributeIndexes.end())
+        player->attributeChanges.attributeIndexes.push_back(attributeId);
 }
 
 void StatsFunctions::SetSkillBase(unsigned short pid, unsigned short skillId, int value) noexcept
@@ -469,6 +477,10 @@ void StatsFunctions::SetSkillIncrease(unsigned short pid, unsigned int attribute
         return;
 
     player->npcStats.mSkillIncrease[attributeId] = value;
+
+    if (std::find(player->attributeChanges.attributeIndexes.begin(), player->attributeChanges.attributeIndexes.end(), attributeId) ==
+        player->attributeChanges.attributeIndexes.end())
+        player->attributeChanges.attributeIndexes.push_back(attributeId);
 }
 
 void StatsFunctions::SetBounty(unsigned short pid, int value) noexcept
@@ -520,6 +532,8 @@ void StatsFunctions::SendAttributes(unsigned short pid) noexcept
     mwmp::Networking::get().getPlayerPacketController()->GetPacket(ID_PLAYER_ATTRIBUTE)->setPlayer(player);
     mwmp::Networking::get().getPlayerPacketController()->GetPacket(ID_PLAYER_ATTRIBUTE)->Send(false);
     mwmp::Networking::get().getPlayerPacketController()->GetPacket(ID_PLAYER_ATTRIBUTE)->Send(true);
+
+    player->attributeChanges.attributeIndexes.clear();
 }
 
 void StatsFunctions::SendSkills(unsigned short pid) noexcept

apps/openmw/mwmp/LocalPlayer.cpp

@@ -237,28 +237,25 @@ void LocalPlayer::updateAttributes(bool forceUpdate)
 
     MWWorld::Ptr ptrPlayer = getPlayerPtr();
     const MWMechanics::NpcStats &ptrNpcStats = ptrPlayer.getClass().getNpcStats(ptrPlayer);
-    bool attributesChanged = false;
 
     for (int i = 0; i < 8; ++i)
     {
         if (ptrNpcStats.getAttribute(i).getBase() != creatureStats.mAttributes[i].mBase ||
-            ptrNpcStats.getAttribute(i).getModifier() != creatureStats.mAttributes[i].mMod)
+            ptrNpcStats.getAttribute(i).getModifier() != creatureStats.mAttributes[i].mMod ||
+            ptrNpcStats.getSkillIncrease(i) != npcStats.mSkillIncrease[i] ||
+            forceUpdate)
         {
             ptrNpcStats.getAttribute(i).writeState(creatureStats.mAttributes[i]);
-            attributesChanged = true;
-        }
-
-        if (ptrNpcStats.getSkillIncrease(i) != npcStats.mSkillIncrease[i])
-        {
             npcStats.mSkillIncrease[i] = ptrNpcStats.getSkillIncrease(i);
-            attributesChanged = true;
+            attributeChanges.attributeIndexes.push_back(i);
         }
     }
 
-    if (attributesChanged || forceUpdate)
+    if (attributeChanges.attributeIndexes.size() > 0)
     {
         getNetworking()->getPlayerPacket(ID_PLAYER_ATTRIBUTE)->setPlayer(this);
         getNetworking()->getPlayerPacket(ID_PLAYER_ATTRIBUTE)->Send();
+        attributeChanges.attributeIndexes.clear();
     }
 }
 

components/openmw-mp/Base/BasePlayer.hpp

@@ -95,6 +95,14 @@ namespace mwmp
         int type; // 0 - Cell load, 1 - Cell unload
     };
 
+    // Track only the indexes of the attributes that have been changed,
+    // with the attribute values themselves being stored in creatureStats.mAttributes
+    struct AttributeChanges
+    {
+        std::vector<int> attributeIndexes;
+        unsigned int count;
+    };
+
     // Track only the indexes of the skills that have been changed,
     // with the skill values themselves being stored in npcStats.mSkills
     struct SkillChanges
@@ -249,6 +257,7 @@ namespace mwmp
         int day;
         double hour;
 
+        AttributeChanges attributeChanges;
         SkillChanges skillChanges;
 
         InventoryChanges inventoryChanges;

components/openmw-mp/Packets/Player/PacketPlayerAttribute.cpp

@@ -1,8 +1,5 @@
-//
-// Created by koncord on 08.03.16.
-//
-
 #include "PacketPlayerAttribute.hpp"
+
 #include <components/openmw-mp/NetworkMessages.hpp>
 
 using namespace mwmp;
@@ -16,7 +13,23 @@ void PacketPlayerAttribute::Packet(RakNet::BitStream *bs, bool send)
 {
     PlayerPacket::Packet(bs, send);
 
-    RW(player->creatureStats.mAttributes, send);
+    if (send)
+        player->attributeChanges.count = (unsigned int)(player->attributeChanges.attributeIndexes.size());
+    else
+        player->attributeChanges.attributeIndexes.clear();
+
+    RW(player->attributeChanges.count, send);
+
+    for (unsigned int i = 0; i < player->attributeChanges.count; i++)
+    {
+        int attributeId;
+
+        if (send)
+            attributeId = player->attributeChanges.attributeIndexes.at(i);
+
+        RW(attributeId, send);
 
-    RW(player->npcStats.mSkillIncrease, send);
+        RW(player->creatureStats.mAttributes[attributeId], send);
+        RW(player->npcStats.mSkillIncrease[attributeId], send);
+    }
 }