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Fix missing limit check for block y pos (#14320)

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sfan5 2024-01-30 21:51:51 +01:00 committed by GitHub
parent e1f6108789
commit 9da1354f3a
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2 changed files with 19 additions and 26 deletions
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42
src/map.cpp
View File

@ -1506,12 +1506,11 @@ MapSector *ServerMap::createSector(v2s16 p2d)
Do not create over max mapgen limit
*/
if (blockpos_over_max_limit(v3s16(p2d.X, 0, p2d.Y)))
throw InvalidPositionException("createSector(): pos. over max mapgen limit");
throw InvalidPositionException("createSector(): pos over max mapgen limit");
/*
Generate blank sector
*/
sector = new MapSector(this, p2d, m_gamedef);
/*
@ -1524,20 +1523,11 @@ MapSector *ServerMap::createSector(v2s16 p2d)
MapBlock * ServerMap::createBlock(v3s16 p)
{
/*
Do not create over max mapgen limit
*/
if (blockpos_over_max_limit(p))
throw InvalidPositionException("createBlock(): pos. over max mapgen limit");
v2s16 p2d(p.X, p.Z);
s16 block_y = p.Y;
/*
This will create or load a sector if not found in memory.
If block exists on disk, it will be loaded.
NOTE: On old save formats, this will be slow, as it generates
lighting on blocks for them.
*/
MapSector *sector;
try {
@ -1552,11 +1542,16 @@ MapBlock * ServerMap::createBlock(v3s16 p)
*/
MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
if (block) {
if (block)
return block;
}
// Create blank
block = sector->createBlankBlock(block_y);
try {
block = sector->createBlankBlock(block_y);
} catch (InvalidPositionException &e) {
infostream << "createBlock: createBlankBlock() failed" << std::endl;
throw e;
}
return block;
}
@ -1576,10 +1571,10 @@ MapBlock * ServerMap::emergeBlock(v3s16 p, bool create_blank)
}
if (create_blank) {
MapSector *sector = createSector(v2s16(p.X, p.Z));
MapBlock *block = sector->createBlankBlock(p.Y);
return block;
try {
MapSector *sector = createSector(v2s16(p.X, p.Z));
return sector->createBlankBlock(p.Y);
} catch (InvalidPositionException &e) {}
}
return NULL;
@ -2000,9 +1995,7 @@ void MMVManip::initialEmerge(v3s16 blockpos_min, v3s16 blockpos_max,
u8 flags = 0;
MapBlock *block;
v3s16 p(x,y,z);
std::map<v3s16, u8>::iterator n;
n = m_loaded_blocks.find(p);
if(n != m_loaded_blocks.end())
if (m_loaded_blocks.count(p) > 0)
continue;
bool block_data_inexistent = false;
@ -2020,10 +2013,7 @@ void MMVManip::initialEmerge(v3s16 blockpos_min, v3s16 blockpos_max,
{
if (load_if_inexistent && !blockpos_over_max_limit(p)) {
ServerMap *svrmap = (ServerMap *)m_map;
block = svrmap->emergeBlock(p, false);
if (block == NULL)
block = svrmap->createBlock(p);
block = m_map->emergeBlock(p, true);
block->copyTo(*this);
} else {
flags |= VMANIP_BLOCK_DATA_INEXIST;

3
src/mapsector.cpp
View File

@ -71,6 +71,9 @@ std::unique_ptr<MapBlock> MapSector::createBlankBlockNoInsert(s16 y)
{
assert(getBlockBuffered(y) == nullptr); // Pre-condition
if (blockpos_over_max_limit(v3s16(0, y, 0)))
throw InvalidPositionException("createBlankBlockNoInsert(): pos over max mapgen limit");
v3s16 blockpos_map(m_pos.X, y, m_pos.Y);
return std::make_unique<MapBlock>(blockpos_map, m_gamedef);