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Preserve LBM ordering when running them

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(broken in 811adf5d42)
This commit is contained in:
sfan5 2025-03-18 20:26:11 +01:00
parent ea1e8797a3
commit 71cd25a798
1 changed files with 21 additions and 5 deletions
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26
src/serverenvironment.cpp
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@ -237,6 +237,21 @@ std::string LBMManager::createIntroductionTimesString()
return oss.str();
}
namespace {
struct LBMToRun {
std::unordered_set<v3s16> p; // node positions
std::vector<LoadingBlockModifierDef*> l; // ordered list of LBMs
template <typename C>
void insertLBMs(const C &container) {
for (auto &it : container) {
if (!CONTAINS(l, it))
l.push_back(it);
}
}
};
}
void LBMManager::applyLBMs(ServerEnvironment *env, MapBlock *block,
const u32 stamp, const float dtime_s)
{
@ -245,10 +260,6 @@ void LBMManager::applyLBMs(ServerEnvironment *env, MapBlock *block,
"attempted to query on non fully set up LBMManager");
// Collect a list of all LBMs and associated positions
struct LBMToRun {
std::unordered_set<v3s16> p; // node positions
std::unordered_set<LoadingBlockModifierDef*> l;
};
std::unordered_map<content_t, LBMToRun> to_run;
// Note: the iteration count of this outer loop is typically very low, so it's ok.
@ -279,7 +290,7 @@ void LBMManager::applyLBMs(ServerEnvironment *env, MapBlock *block,
continue;
batch->p.insert(pos);
if (c_changed) {
batch->l.insert(lbm_list->begin(), lbm_list->end());
batch->insertLBMs(*lbm_list);
} else {
// we were here before so the list must be filled
assert(!batch->l.empty());
@ -290,6 +301,11 @@ void LBMManager::applyLBMs(ServerEnvironment *env, MapBlock *block,
// Actually run them
bool first = true;
for (auto &[c, batch] : to_run) {
if (tracestream) {
tracestream << "Running " << batch.l.size() << " LBMs for node "
<< env->getGameDef()->ndef()->get(c).name << " ("
<< batch.p.size() << "x) in block " << block->getPos() << std::endl;
}
for (auto &lbm_def : batch.l) {
if (!first) {
// The fun part: since any LBM call can change the nodes inside of he