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feat(bbb): answer FetchModelMetadataRequest for brick built models

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The client asks for a model's metadata (name, owner, behaviors and its blueprint's
bricks and box) when it shows a brick built model item's tooltip, a model on a
property or an exhibit, and shows BBB_LOADING_BLUEPRINT until it gets it. The
world server never answered. It now does as live did: UG data for the model
(found among the player's items by subkey, else among placed models) and, for a
brick built model, the blueprint data from its ugc row and LXFML.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Aaron Kimbrell
2026-09-27 14:47:29 -05:00
parent 962797d6a2
commit 8ab7e496b0
11 changed files with 479 additions and 0 deletions
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43
dCommon/Lxfml.cpp
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@@ -4,6 +4,7 @@
#include "StringifiedEnum.h"
#include "TinyXmlUtils.h"
#include <algorithm>
#include <ranges>
#include <unordered_map>
#include <unordered_set>
@@ -30,6 +31,48 @@ namespace {
</LXFML>)";
}
Lxfml::Contents Lxfml::ReadContents(const std::string_view data) {
Contents contents;
if (data.empty()) return contents;
tinyxml2::XMLDocument doc;
if (doc.Parse(data.data(), data.size()) != tinyxml2::XML_SUCCESS) return contents;
const auto* bricks = doc.FirstChildElement("LXFML") ? doc.FirstChildElement("LXFML")->FirstChildElement("Bricks") : nullptr;
if (!bricks) return contents;
bool anyBone = false;
for (const auto* brick = bricks->FirstChildElement("Brick"); brick; brick = brick->NextSiblingElement("Brick")) {
// designID may carry a suffix ("3001;A")
const std::string_view design = brick->Attribute("designID") ? brick->Attribute("designID") : "";
const auto digits = design.substr(0, design.find_first_not_of("0123456789"));
const auto designId = GeneralUtils::TryParse<uint32_t>(digits);
if (designId) contents.designIds.push_back(*designId);
for (const auto* part = brick->FirstChildElement("Part"); part; part = part->NextSiblingElement("Part")) {
for (const auto* bone = part->FirstChildElement("Bone"); bone; bone = bone->NextSiblingElement("Bone")) {
const auto* transformation = bone->Attribute("transformation");
if (!transformation) continue;
const auto split = GeneralUtils::SplitString(transformation, ',');
if (split.size() < 12) continue;
const auto x = GeneralUtils::TryParse<float>(split[9]);
const auto y = GeneralUtils::TryParse<float>(split[10]);
const auto z = GeneralUtils::TryParse<float>(split[11]);
if (!x || !y || !z) continue;
const NiPoint3 position{ *x, *y, *z };
if (!anyBone) {
contents.boxMin = position;
contents.boxMax = position;
anyBone = true;
continue;
}
contents.boxMin = NiPoint3(std::min(contents.boxMin.x, position.x), std::min(contents.boxMin.y, position.y), std::min(contents.boxMin.z, position.z));
contents.boxMax = NiPoint3(std::max(contents.boxMax.x, position.x), std::max(contents.boxMax.y, position.y), std::max(contents.boxMax.z, position.z));
}
}
}
return contents;
}
Lxfml::Result Lxfml::NormalizePosition(const std::string_view data, const NiPoint3& curPosition) {
Result toReturn;