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Fix online mode creature spawning and packet parsing

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- Fix encryption desync by tracking decrypted header bytes in world socket
- Fix UPDATE_OBJECT movement block parsing to handle 3.3.5a update flags
- Fix UNIT_FIELD_DISPLAYID index (67, not 71)
- Add creature spawn/despawn callbacks with DBC-based model loading
- Add SMSG_COMPRESSED_UPDATE_OBJECT opcode support
This commit is contained in:
Kelsi 2026-02-05 21:55:52 -08:00
parent a4fcc38c12
commit c28376e193
9 changed files with 445 additions and 30 deletions
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60
src/game/game_handler.cpp
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@ -16,6 +16,7 @@
#include <functional>
#include <cstdlib>
#include <sqlite3.h>
#include <zlib.h>
namespace wowee {
namespace game {
@ -925,12 +926,21 @@ void GameHandler::handlePacket(network::Packet& packet) {
break;
case Opcode::SMSG_UPDATE_OBJECT:
LOG_INFO("Received SMSG_UPDATE_OBJECT, state=", static_cast<int>(state), " size=", packet.getSize());
// Can be received after entering world
if (state == WorldState::IN_WORLD) {
handleUpdateObject(packet);
}
break;
case Opcode::SMSG_COMPRESSED_UPDATE_OBJECT:
LOG_INFO("Received SMSG_COMPRESSED_UPDATE_OBJECT, state=", static_cast<int>(state), " size=", packet.getSize());
// Compressed version of UPDATE_OBJECT
if (state == WorldState::IN_WORLD) {
handleCompressedUpdateObject(packet);
}
break;
case Opcode::SMSG_DESTROY_OBJECT:
// Can be received after entering world
if (state == WorldState::IN_WORLD) {
@ -2288,6 +2298,10 @@ void GameHandler::handleUpdateObject(network::Packet& packet) {
for (uint64_t guid : data.outOfRangeGuids) {
if (entityManager.hasEntity(guid)) {
LOG_INFO("Entity went out of range: 0x", std::hex, guid, std::dec);
// Trigger creature despawn callback before removing entity
if (creatureDespawnCallback_) {
creatureDespawnCallback_(guid);
}
entityManager.removeEntity(guid);
}
}
@ -2363,9 +2377,17 @@ void GameHandler::handleUpdateObject(network::Packet& packet) {
case 32: unit->setMaxHealth(val); break;
case 33: unit->setMaxPower(val); break;
case 54: unit->setLevel(val); break;
case 67: unit->setDisplayId(val); break; // UNIT_FIELD_DISPLAYID
default: break;
}
}
// Trigger creature spawn callback for units with displayId
if (block.objectType == ObjectType::UNIT && unit->getDisplayId() != 0) {
if (creatureSpawnCallback_) {
creatureSpawnCallback_(block.guid, unit->getDisplayId(),
unit->getX(), unit->getY(), unit->getZ(), unit->getOrientation());
}
}
}
// Extract XP fields for player entity
if (block.guid == playerGuid && block.objectType == ObjectType::PLAYER) {
@ -2444,6 +2466,44 @@ void GameHandler::handleUpdateObject(network::Packet& packet) {
LOG_INFO("Entity count: ", entityManager.getEntityCount());
}
void GameHandler::handleCompressedUpdateObject(network::Packet& packet) {
LOG_INFO("Handling SMSG_COMPRESSED_UPDATE_OBJECT, packet size: ", packet.getSize());
// First 4 bytes = decompressed size
if (packet.getSize() < 4) {
LOG_WARNING("SMSG_COMPRESSED_UPDATE_OBJECT too small");
return;
}
uint32_t decompressedSize = packet.readUInt32();
LOG_INFO(" Decompressed size: ", decompressedSize);
if (decompressedSize == 0 || decompressedSize > 1024 * 1024) {
LOG_WARNING("Invalid decompressed size: ", decompressedSize);
return;
}
// Remaining data is zlib compressed
size_t compressedSize = packet.getSize() - packet.getReadPos();
const uint8_t* compressedData = packet.getData().data() + packet.getReadPos();
// Decompress
std::vector<uint8_t> decompressed(decompressedSize);
uLongf destLen = decompressedSize;
int ret = uncompress(decompressed.data(), &destLen, compressedData, compressedSize);
if (ret != Z_OK) {
LOG_WARNING("Failed to decompress UPDATE_OBJECT: zlib error ", ret);
return;
}
LOG_DEBUG(" Decompressed ", compressedSize, " -> ", destLen, " bytes");
// Create packet from decompressed data and parse it
network::Packet decompressedPacket(static_cast<uint16_t>(Opcode::SMSG_UPDATE_OBJECT), decompressed);
handleUpdateObject(decompressedPacket);
}
void GameHandler::handleDestroyObject(network::Packet& packet) {
LOG_INFO("Handling SMSG_DESTROY_OBJECT");