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| author | Giuseppe Bilotta <giuseppe.bilotta@gmail.com> | 2011-08-16 19:56:57 +0200 |
|---|---|---|
| committer | Giuseppe Bilotta <giuseppe.bilotta@gmail.com> | 2011-08-16 20:37:46 +0200 |
| commit | 1eb14c7743dc73bd43eaf39f891105bfa741a458 (patch) | |
| tree | b67af095966a50701d188ebae1d42dd6e4551091 /src/map.cpp | |
| parent | 56e9f97294ebc39967a3d029fe07e7c74849c1a1 (diff) | |
| download | minetest-1eb14c7743dc73bd43eaf39f891105bfa741a458.tar.gz minetest-1eb14c7743dc73bd43eaf39f891105bfa741a458.tar.bz2 minetest-1eb14c7743dc73bd43eaf39f891105bfa741a458.zip | |
Viscous fluids
Diffstat (limited to 'src/map.cpp')
| -rw-r--r-- | src/map.cpp | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/src/map.cpp b/src/map.cpp index 3aff00c94..6331055aa 100644 --- a/src/map.cpp +++ b/src/map.cpp @@ -1562,6 +1562,9 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks) /*if(initial_size != 0) dstream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/ + // list of nodes that due to viscosity have not reached their max level height + UniqueQueue<v3s16> must_reflow; + while(m_transforming_liquid.size() != 0) { // This should be done here so that it is done when continue is used @@ -1672,6 +1675,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks) */ content_t new_node_content; s8 new_node_level = -1; + s8 max_node_level = -1; if (num_sources >= 2 || liquid_type == LIQUID_SOURCE) { // liquid_kind will be set to either the flowing alternative of the node (if it's a liquid) // or the flowing alternative of the first of the surrounding sources (if it's air), so @@ -1680,34 +1684,51 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks) } else if (num_sources == 1 && sources[0].t != NEIGHBOR_LOWER) { // liquid_kind is set properly, see above new_node_content = liquid_kind; - new_node_level = LIQUID_LEVEL_MAX; + max_node_level = new_node_level = LIQUID_LEVEL_MAX; } else { // no surrounding sources, so get the maximum level that can flow into this node for (u16 i = 0; i < num_flows; i++) { u8 nb_liquid_level = (flows[i].n.param2 & LIQUID_LEVEL_MASK); switch (flows[i].t) { case NEIGHBOR_UPPER: - if (nb_liquid_level + WATER_DROP_BOOST > new_node_level) { - new_node_level = LIQUID_LEVEL_MAX; + if (nb_liquid_level + WATER_DROP_BOOST > max_node_level) { + max_node_level = LIQUID_LEVEL_MAX; if (nb_liquid_level + WATER_DROP_BOOST < LIQUID_LEVEL_MAX) - new_node_level = nb_liquid_level + WATER_DROP_BOOST; + max_node_level = nb_liquid_level + WATER_DROP_BOOST; } break; case NEIGHBOR_LOWER: break; case NEIGHBOR_SAME_LEVEL: if ((flows[i].n.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK && - nb_liquid_level > 0 && nb_liquid_level - 1 > new_node_level) { - new_node_level = nb_liquid_level - 1; + nb_liquid_level > 0 && nb_liquid_level - 1 > max_node_level) { + max_node_level = nb_liquid_level - 1; } break; } } + if (max_node_level != liquid_level) { + // amount to gain, limited by viscosity + // must be at least 1 in absolute value + s8 level_inc = max_node_level - liquid_level; + u8 viscosity = content_features(liquid_kind).liquid_viscosity; + if (level_inc < -viscosity || level_inc > viscosity) + new_node_level = liquid_level + level_inc/viscosity; + else if (level_inc < 0) + new_node_level = liquid_level - 1; + else if (level_inc > 0) + new_node_level = liquid_level + 1; + if (new_node_level != max_node_level) + must_reflow.push_back(p0); + } else + new_node_level = max_node_level; + if (new_node_level >= 0) new_node_content = liquid_kind; else new_node_content = CONTENT_AIR; + } /* @@ -1760,6 +1781,8 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks) } } //dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl; + while (must_reflow.size() > 0) + m_transforming_liquid.push_back(must_reflow.pop_front()); } NodeMetadata* Map::getNodeMetadata(v3s16 p) |