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Improve edge case handling in LBMManager

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sfan5 2025-03-18 20:57:19 +01:00
parent 3dca2cd26a
commit ed40ea010b
2 changed files with 32 additions and 26 deletions
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57
src/serverenvironment.cpp
View file

@ -150,50 +150,56 @@ void LBMManager::loadIntroductionTimes(const std::string &times,
auto introduction_times = parseIntroductionTimesString(times);
// Put stuff from introduction_times into m_lbm_lookup
for (auto &it : introduction_times) {
const std::string &name = it.first;
u32 time = it.second;
for (auto &[name, time] : introduction_times) {
auto def_it = m_lbm_defs.find(name);
if (def_it == m_lbm_defs.end()) {
// This seems to be an LBM entry for
// an LBM we haven't loaded. Discard it.
infostream << "LBMManager: LBM " << name << " is not registered. "
"Discarding it." << std::endl;
continue;
}
LoadingBlockModifierDef *lbm_def = def_it->second;
auto *lbm_def = def_it->second;
if (lbm_def->run_at_every_load) {
// This seems to be an LBM entry for
// an LBM that runs at every load.
// Don't add it just yet.
continue; // These are handled below
}
if (time > now) {
warningstream << "LBMManager: LBM " << name << " was introduced in "
"the future. Pretending it's new." << std::endl;
// By skipping here it will be added as newly introduced.
continue;
}
m_lbm_lookup[time].addLBM(lbm_def, gamedef);
// Erase the entry so that we know later
// what elements didn't get put into m_lbm_lookup
m_lbm_defs.erase(name);
// which elements didn't get put into m_lbm_lookup
m_lbm_defs.erase(def_it);
}
// Now also add the elements from m_lbm_defs to m_lbm_lookup
// that weren't added in the previous step.
// They are introduced first time to this world,
// or are run at every load (introducement time hardcoded to U32_MAX).
// or are run at every load (introduction time hardcoded to U32_MAX).
LBMContentMapping &lbms_we_introduce_now = m_lbm_lookup[now];
LBMContentMapping &lbms_running_always = m_lbm_lookup[U32_MAX];
for (auto &m_lbm_def : m_lbm_defs) {
if (m_lbm_def.second->run_at_every_load) {
lbms_running_always.addLBM(m_lbm_def.second, gamedef);
} else {
lbms_we_introduce_now.addLBM(m_lbm_def.second, gamedef);
}
auto &lbms_we_introduce_now = m_lbm_lookup[now];
auto &lbms_running_always = m_lbm_lookup[U32_MAX];
for (auto &it : m_lbm_defs) {
if (it.second->run_at_every_load)
lbms_running_always.addLBM(it.second, gamedef);
else
lbms_we_introduce_now.addLBM(it.second, gamedef);
}
// Clear the list, so that we don't delete remaining elements
// twice in the destructor
// All pointer ownership now moved to LBMContentMapping
m_lbm_defs.clear();
// If these are empty delete them again to avoid pointless iteration.
if (lbms_we_introduce_now.empty())
m_lbm_lookup.erase(now);
if (lbms_running_always.empty())
m_lbm_lookup.erase(U32_MAX);
infostream << "LBMManager: " << m_lbm_lookup.size() <<
" unique times in lookup table" << std::endl;
}
std::string LBMManager::createIntroductionTimesString()
@ -208,8 +214,7 @@ std::string LBMManager::createIntroductionTimesString()
auto &lbm_list = it.second.getList();
for (const auto &lbm_def : lbm_list) {
// Don't add if the LBM runs at every load,
// then introducement time is hardcoded
// and doesn't need to be stored
// then introduction time is hardcoded and doesn't need to be stored.
if (lbm_def->run_at_every_load)
continue;
oss << lbm_def->name << "~" << time << ";";

1
src/serverenvironment.h
View file

@ -103,6 +103,7 @@ public:
void addLBM(LoadingBlockModifierDef *lbm_def, IGameDef *gamedef);
const lbm_map::mapped_type *lookup(content_t c) const;
const lbm_vector &getList() const { return lbm_list; }
bool empty() const { return lbm_list.empty(); }
// This struct owns the LBM pointers.
~LBMContentMapping();