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Improve LBMManager::applyLBMs() code

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Fixes a possible bug for lbms on content ID zero and removes unsafe casts.
This commit is contained in:
sfan5 2022-06-05 16:58:48 +02:00
parent 03d86ea0b4
commit a69b7abe00
1 changed files with 5 additions and 6 deletions
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11
src/serverenvironment.cpp
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@ -258,23 +258,22 @@ void LBMManager::applyLBMs(ServerEnvironment *env, MapBlock *block, u32 stamp)
v3s16 pos;
MapNode n;
content_t c;
lbm_lookup_map::const_iterator it = getLBMsIntroducedAfter(stamp);
auto it = getLBMsIntroducedAfter(stamp);
for (; it != m_lbm_lookup.end(); ++it) {
// Cache previous version to speedup lookup which has a very high performance
// penalty on each call
content_t previous_c{};
std::vector<LoadingBlockModifierDef *> *lbm_list = nullptr;
content_t previous_c = CONTENT_IGNORE;
const std::vector<LoadingBlockModifierDef *> *lbm_list = nullptr;
for (pos.X = 0; pos.X < MAP_BLOCKSIZE; pos.X++)
for (pos.Y = 0; pos.Y < MAP_BLOCKSIZE; pos.Y++)
for (pos.Z = 0; pos.Z < MAP_BLOCKSIZE; pos.Z++) {
n = block->getNodeNoEx(pos);
n = block->getNodeNoCheck(pos, nullptr);
c = n.getContent();
// If content_t are not matching perform an LBM lookup
if (previous_c != c) {
lbm_list = (std::vector<LoadingBlockModifierDef *> *)
it->second.lookup(c);
lbm_list = it->second.lookup(c);
previous_c = c;
}