diff options
Diffstat (limited to 'src/serverenvironment.cpp')
| -rw-r--r-- | src/serverenvironment.cpp | 98 |
1 files changed, 93 insertions, 5 deletions
diff --git a/src/serverenvironment.cpp b/src/serverenvironment.cpp index ad2ffc9a4..d044b003d 100644 --- a/src/serverenvironment.cpp +++ b/src/serverenvironment.cpp @@ -1066,6 +1066,91 @@ bool ServerEnvironment::swapNode(v3s16 p, const MapNode &n) return true; } +u8 ServerEnvironment::findSunlight(v3s16 pos) const +{ + // Directions for neighbouring nodes with specified order + static const v3s16 dirs[] = { + v3s16(-1, 0, 0), v3s16(1, 0, 0), v3s16(0, 0, -1), v3s16(0, 0, 1), + v3s16(0, -1, 0), v3s16(0, 1, 0) + }; + + const NodeDefManager *ndef = m_server->ndef(); + + // found_light remembers the highest known sunlight value at pos + u8 found_light = 0; + + struct stack_entry { + v3s16 pos; + s16 dist; + }; + std::stack<stack_entry> stack; + stack.push({pos, 0}); + + std::unordered_map<s64, s8> dists; + dists[MapDatabase::getBlockAsInteger(pos)] = 0; + + while (!stack.empty()) { + struct stack_entry e = stack.top(); + stack.pop(); + + v3s16 currentPos = e.pos; + s8 dist = e.dist + 1; + + for (const v3s16& off : dirs) { + v3s16 neighborPos = currentPos + off; + s64 neighborHash = MapDatabase::getBlockAsInteger(neighborPos); + + // Do not walk neighborPos multiple times unless the distance to the start + // position is shorter + auto it = dists.find(neighborHash); + if (it != dists.end() && dist >= it->second) + continue; + + // Position to walk + bool is_position_ok; + MapNode node = m_map->getNode(neighborPos, &is_position_ok); + if (!is_position_ok) { + // This happens very rarely because the map at currentPos is loaded + m_map->emergeBlock(neighborPos, false); + node = m_map->getNode(neighborPos, &is_position_ok); + if (!is_position_ok) + continue; // not generated + } + + const ContentFeatures &def = ndef->get(node); + if (!def.sunlight_propagates) { + // Do not test propagation here again + dists[neighborHash] = -1; + continue; + } + + // Sunlight could have come from here + dists[neighborHash] = dist; + u8 daylight = node.param1 & 0x0f; + + // In the special case where sunlight shines from above and thus + // does not decrease with upwards distance, daylight is always + // bigger than nightlight, which never reaches 15 + int possible_finlight = daylight - dist; + if (possible_finlight <= found_light) { + // Light from here cannot make a brighter light at currentPos than + // found_light + continue; + } + + u8 nightlight = node.param1 >> 4; + if (daylight > nightlight) { + // Found a valid daylight + found_light = possible_finlight; + } else { + // Sunlight may be darker, so walk the neighbours + stack.push({neighborPos, dist}); + } + } + } + return found_light; +} + void ServerEnvironment::clearObjects(ClearObjectsMode mode) { infostream << "ServerEnvironment::clearObjects(): " @@ -1354,8 +1439,8 @@ void ServerEnvironment::step(float dtime) std::shuffle(output.begin(), output.end(), m_rgen); int i = 0; - // The time budget for ABMs is 20%. - u32 max_time_ms = m_cache_abm_interval * 1000 / 5; + // determine the time budget for ABMs + u32 max_time_ms = m_cache_abm_interval * 1000 * m_cache_abm_time_budget; for (const v3s16 &p : output) { MapBlock *block = m_map->getBlockNoCreateNoEx(p); if (!block) @@ -1887,8 +1972,8 @@ void ServerEnvironment::deactivateFarObjects(bool _force_delete) // force_delete might be overriden per object bool force_delete = _force_delete; - // Do not deactivate if static data creation not allowed - if (!force_delete && !obj->isStaticAllowed()) + // Do not deactivate if disallowed + if (!force_delete && !obj->shouldUnload()) return false; // removeRemovedObjects() is responsible for these @@ -1917,7 +2002,10 @@ void ServerEnvironment::deactivateFarObjects(bool _force_delete) } // If block is still active, don't remove - if (!force_delete && m_active_blocks.contains(blockpos_o)) + bool still_active = obj->isStaticAllowed() ? + m_active_blocks.contains(blockpos_o) : + getMap().getBlockNoCreateNoEx(blockpos_o) != nullptr; + if (!force_delete && still_active) return false; verbosestream << "ServerEnvironment::deactivateFarObjects(): " |