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feat(ugc): placed models from the UGC server without 3D services

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A placed model's client (1.10.64, UGCUSE3DSERVICES=7:0) always loads its
blueprint's NIF and HKX (its BlueprintComponent sets renderUserGen and
physicsUserGen itself) and its LXFML, asks the world for each file's
manifest first and waits for the answer with no timeout.

With ugc_manifest=1 and the new ugc_manifest_models=1 (default 0) the world:
- leaves the models whose mesh the UGC server made out of the LXFML it
  sends when a property loads,
- answers their NIF with the UGC server's checksum, their LXFML with the
  stored LXFML's (worked out once and kept) and their HKX as not known,
- sends a model that isn't made its LXFML (once for the three requests),
  so the client builds it itself and no model is left waiting.

When the UGC server writes a model's mesh with a new checksum it sends
UGC_MODELS_MADE (a new master message, appended) to the master, which
passes it to every world; a world with that model placed sends its
players the new NIF checksum and NotifyClientUGCModelReady (game message
909, the blueprint id), so clients switch to the served mesh.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Aaron Kimbrell
2026-09-27 19:12:48 -05:00
parent dce2037d9d
commit 9d76fe9550
18 changed files with 508 additions and 44 deletions
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14
dWorldServer/WorldServer.cpp
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@@ -836,6 +836,7 @@ namespace {
handlers.On<MessageCaptureControl>(Master::MESSAGE_CAPTURE_CONTROL, [](const MessageCaptureControl& control, const SystemAddress&) { MessageInspector::Control(control); });
handlers.On<Announcement>(Master::ANNOUNCE, [](const Announcement& announcement, const SystemAddress&) { DashboardNotify::Announce(announcement.title, announcement.message); });
handlers.On<MasterPackets::NewSessionAlert>(Master::NEW_SESSION_ALERT, OnNewSessionAlert);
handlers.On<UgcModelsMade>(Master::UGC_MODELS_MADE, [](const UgcModelsMade& made, const SystemAddress&) { UgcManifest::OnModelsMade(made.blueprintIds); });
return handlers;
}();
return handlers;
@@ -1031,8 +1032,9 @@ void LoadPlayer(const SystemAddress& sysAddr) {
goto noBBB;
}
// Workaround for not having a UGC server to get model LXFML onto the client so it
// can generate the physics and nif for the object.
// The models' LXFML, for the client to build each model's NIF and HKX itself. With ugc_manifest_models
// the models whose mesh the UGC server made are left out: the client asks for their files and downloads
// the mesh (UgcManifest, docs/UgcServer.md).
auto bbbModels = Database::Get()->GetUgcModels(propertyId);
if (bbbModels.empty()) {
@@ -1043,7 +1045,12 @@ void LoadPlayer(const SystemAddress& sysAddr) {
ClientPackets::BlueprintSaveResponse response;
response.localId = LWOOBJID_EMPTY; //always zero so that a check on the client passes
response.reasonCode = eBlueprintSaveResponseType::EverythingWorked;
size_t served = 0;
for (auto& bbbModel : bbbModels) {
if (!UgcManifest::ClientBuildsModel(bbbModel.id)) {
served++;
continue;
}
LOG("Getting lxfml ugcID: %llu", bbbModel.id);
bbbModel.lxfmlData.seekg(0, std::ios::end);
@@ -1055,7 +1062,8 @@ void LoadPlayer(const SystemAddress& sysAddr) {
model.blueprintId = bbbModel.id;
model.data = bbbModel.lxfmlData.str().substr(0, lxfmlSize);
}
response.Send(sysAddr);
if (served > 0) LOG("%zu of the property's %zu models come from the UGC server", served, bbbModels.size());
if (!response.models.empty()) response.Send(sysAddr);
}
noBBB: