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Merge remote-tracking branch 'oblomov/liquid_fixes'
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commit
f98eda4d52
@ -26,6 +26,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#define WATER_ALPHA 160
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#define WATER_VISC 1
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#define LAVA_VISC 7
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// TODO: Get rid of these and set up some attributes like toughness,
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// fluffyness, and a funciton to calculate time and durability loss
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// (and sound? and whatever else) from them
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@ -374,6 +377,7 @@ void content_mapnode_init()
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f->liquid_type = LIQUID_FLOWING;
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f->liquid_alternative_flowing = CONTENT_WATER;
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f->liquid_alternative_source = CONTENT_WATERSOURCE;
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f->liquid_viscosity = WATER_VISC;
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f->vertex_alpha = WATER_ALPHA;
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if(f->special_material == NULL && g_texturesource)
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{
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@ -421,6 +425,7 @@ void content_mapnode_init()
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f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
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f->liquid_alternative_flowing = CONTENT_WATER;
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f->liquid_alternative_source = CONTENT_WATERSOURCE;
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f->liquid_viscosity = WATER_VISC;
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f->vertex_alpha = WATER_ALPHA;
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if(f->special_material == NULL && g_texturesource)
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{
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@ -451,6 +456,7 @@ void content_mapnode_init()
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f->liquid_type = LIQUID_FLOWING;
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f->liquid_alternative_flowing = CONTENT_LAVA;
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f->liquid_alternative_source = CONTENT_LAVASOURCE;
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f->liquid_viscosity = LAVA_VISC;
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f->damage_per_second = 4*2;
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if(f->special_material == NULL && g_texturesource)
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{
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@ -499,6 +505,7 @@ void content_mapnode_init()
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f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
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f->liquid_alternative_flowing = CONTENT_LAVA;
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f->liquid_alternative_source = CONTENT_LAVASOURCE;
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f->liquid_viscosity = LAVA_VISC;
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f->damage_per_second = 4*2;
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if(f->special_material == NULL && g_texturesource)
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{
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111
src/map.cpp
111
src/map.cpp
@ -1562,6 +1562,9 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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/*if(initial_size != 0)
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dstream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
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// list of nodes that due to viscosity have not reached their max level height
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UniqueQueue<v3s16> must_reflow;
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while(m_transforming_liquid.size() != 0)
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{
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// This should be done here so that it is done when continue is used
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@ -1575,7 +1578,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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v3s16 p0 = m_transforming_liquid.pop_front();
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MapNode n0 = getNodeNoEx(p0);
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/*
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Collect information about current node
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*/
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@ -1584,7 +1587,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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LiquidType liquid_type = content_features(n0.getContent()).liquid_type;
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switch (liquid_type) {
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case LIQUID_SOURCE:
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liquid_level = 8;
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liquid_level = LIQUID_LEVEL_SOURCE;
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liquid_kind = content_features(n0.getContent()).liquid_alternative_flowing;
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break;
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case LIQUID_FLOWING:
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@ -1599,18 +1602,11 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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liquid_kind = CONTENT_AIR;
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break;
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}
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/*
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Collect information about the environment
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*/
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v3s16 dirs[6] = {
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v3s16( 0, 1, 0), // top
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v3s16( 0,-1, 0), // bottom
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v3s16( 1, 0, 0), // right
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v3s16(-1, 0, 0), // left
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v3s16( 0, 0, 1), // back
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v3s16( 0, 0,-1), // front
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};
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const v3s16 *dirs = g_6dirs;
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NodeNeighbor sources[6]; // surrounding sources
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int num_sources = 0;
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NodeNeighbor flows[6]; // surrounding flowing liquid nodes
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@ -1623,10 +1619,10 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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for (u16 i = 0; i < 6; i++) {
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NeighborType nt = NEIGHBOR_SAME_LEVEL;
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switch (i) {
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case 0:
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case 1:
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nt = NEIGHBOR_UPPER;
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break;
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case 1:
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case 4:
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nt = NEIGHBOR_LOWER;
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break;
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}
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@ -1636,9 +1632,15 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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case LIQUID_NONE:
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if (nb.n.getContent() == CONTENT_AIR) {
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airs[num_airs++] = nb;
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// if the current node is a water source the neighbor
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// should be enqueded for transformation regardless of whether the
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// current node changes or not.
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if (nb.t != NEIGHBOR_UPPER && liquid_type != LIQUID_NONE)
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m_transforming_liquid.push_back(npos);
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// if the current node happens to be a flowing node, it will start to flow down here.
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if (nb.t == NEIGHBOR_LOWER)
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if (nb.t == NEIGHBOR_LOWER) {
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flowing_down = true;
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}
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} else {
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neutrals[num_neutrals++] = nb;
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}
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@ -1667,12 +1669,13 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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break;
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}
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}
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/*
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decide on the type (and possibly level) of the current node
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*/
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content_t new_node_content;
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s8 new_node_level = -1;
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s8 max_node_level = -1;
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if (num_sources >= 2 || liquid_type == LIQUID_SOURCE) {
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// liquid_kind will be set to either the flowing alternative of the node (if it's a liquid)
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// or the flowing alternative of the first of the surrounding sources (if it's air), so
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@ -1681,49 +1684,53 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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} else if (num_sources == 1 && sources[0].t != NEIGHBOR_LOWER) {
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// liquid_kind is set properly, see above
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new_node_content = liquid_kind;
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new_node_level = 7;
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max_node_level = new_node_level = LIQUID_LEVEL_MAX;
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} else {
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// no surrounding sources, so get the maximum level that can flow into this node
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for (u16 i = 0; i < num_flows; i++) {
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u8 nb_liquid_level = (flows[i].n.param2 & LIQUID_LEVEL_MASK);
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switch (flows[i].t) {
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case NEIGHBOR_UPPER:
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if (nb_liquid_level + WATER_DROP_BOOST > new_node_level) {
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new_node_level = 7;
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if (nb_liquid_level + WATER_DROP_BOOST < 7)
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new_node_level = nb_liquid_level + WATER_DROP_BOOST;
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if (nb_liquid_level + WATER_DROP_BOOST > max_node_level) {
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max_node_level = LIQUID_LEVEL_MAX;
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if (nb_liquid_level + WATER_DROP_BOOST < LIQUID_LEVEL_MAX)
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max_node_level = nb_liquid_level + WATER_DROP_BOOST;
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}
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break;
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case NEIGHBOR_LOWER:
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break;
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case NEIGHBOR_SAME_LEVEL:
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if ((flows[i].n.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK &&
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nb_liquid_level > 0 && nb_liquid_level - 1 > new_node_level) {
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new_node_level = nb_liquid_level - 1;
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nb_liquid_level > 0 && nb_liquid_level - 1 > max_node_level) {
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max_node_level = nb_liquid_level - 1;
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}
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break;
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}
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}
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// don't flow as far in open terrain - if there isn't at least one adjacent solid block,
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// substract another unit from the resulting water level.
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if (!flowing_down && new_node_level >= 1) {
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bool at_wall = false;
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for (u16 i = 0; i < num_neutrals; i++) {
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if (neutrals[i].t == NEIGHBOR_SAME_LEVEL) {
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at_wall = true;
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break;
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}
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}
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if (!at_wall)
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new_node_level -= 1;
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}
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u8 viscosity = content_features(liquid_kind).liquid_viscosity;
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if (viscosity > 1 && max_node_level != liquid_level) {
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// amount to gain, limited by viscosity
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// must be at least 1 in absolute value
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s8 level_inc = max_node_level - liquid_level;
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if (level_inc < -viscosity || level_inc > viscosity)
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new_node_level = liquid_level + level_inc/viscosity;
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else if (level_inc < 0)
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new_node_level = liquid_level - 1;
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else if (level_inc > 0)
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new_node_level = liquid_level + 1;
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if (new_node_level != max_node_level)
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must_reflow.push_back(p0);
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} else
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new_node_level = max_node_level;
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if (new_node_level >= 0)
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new_node_content = liquid_kind;
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else
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new_node_content = CONTENT_AIR;
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}
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/*
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check if anything has changed. if not, just continue with the next node.
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*/
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@ -1732,31 +1739,32 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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((n0.param2 & LIQUID_FLOW_DOWN_MASK) == LIQUID_FLOW_DOWN_MASK)
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== flowing_down)))
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continue;
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/*
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update the current node
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*/
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bool flow_down_enabled = (flowing_down && ((n0.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK));
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n0.setContent(new_node_content);
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if (content_features(n0.getContent()).liquid_type == LIQUID_FLOWING) {
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if (content_features(new_node_content).liquid_type == LIQUID_FLOWING) {
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// set level to last 3 bits, flowing down bit to 4th bit
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n0.param2 |= (flowing_down ? LIQUID_FLOW_DOWN_MASK : 0x00) | (new_node_level & LIQUID_LEVEL_MASK);
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n0.param2 = (flowing_down ? LIQUID_FLOW_DOWN_MASK : 0x00) | (new_node_level & LIQUID_LEVEL_MASK);
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} else {
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// set the liquid level and flow bit to 0
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n0.param2 &= ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
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n0.param2 = ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
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}
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n0.setContent(new_node_content);
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setNode(p0, n0);
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v3s16 blockpos = getNodeBlockPos(p0);
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MapBlock *block = getBlockNoCreateNoEx(blockpos);
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if(block != NULL)
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modified_blocks.insert(blockpos, block);
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/*
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enqueue neighbors for update if neccessary
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*/
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switch (content_features(n0.getContent()).liquid_type) {
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case LIQUID_SOURCE:
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case LIQUID_FLOWING:
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// make sure source flows into all neighboring nodes
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for (u16 i = 0; i < num_flows; i++)
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if (flows[i].t != NEIGHBOR_UPPER)
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@ -1770,22 +1778,11 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
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for (u16 i = 0; i < num_flows; i++)
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m_transforming_liquid.push_back(flows[i].p);
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break;
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case LIQUID_FLOWING:
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for (u16 i = 0; i < num_flows; i++) {
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u8 flow_level = (flows[i].n.param2 & LIQUID_LEVEL_MASK);
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// liquid_level is still the ORIGINAL level of this node.
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if (flows[i].t != NEIGHBOR_UPPER && ((flow_level < liquid_level || flow_level < new_node_level) ||
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flow_down_enabled))
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m_transforming_liquid.push_back(flows[i].p);
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}
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for (u16 i = 0; i < num_airs; i++) {
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if (airs[i].t != NEIGHBOR_UPPER && (airs[i].t == NEIGHBOR_LOWER || new_node_level > 0))
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m_transforming_liquid.push_back(airs[i].p);
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}
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break;
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}
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}
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//dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
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while (must_reflow.size() > 0)
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m_transforming_liquid.push_back(must_reflow.pop_front());
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}
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NodeMetadata* Map::getNodeMetadata(v3s16 p)
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@ -153,6 +153,10 @@ struct ContentFeatures
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content_t liquid_alternative_flowing;
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// If the content is liquid, this is the source version of the liquid.
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content_t liquid_alternative_source;
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// Viscosity for fluid flow, ranging from 1 to 7, with
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// 1 giving almost instantaneous propagation and 7 being
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// the slowest possible
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u8 liquid_viscosity;
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// Used currently for flowing liquids
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u8 vertex_alpha;
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// Special irrlicht material, used sometimes
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@ -189,6 +193,7 @@ struct ContentFeatures
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initial_metadata = NULL;
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liquid_alternative_flowing = CONTENT_IGNORE;
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liquid_alternative_source = CONTENT_IGNORE;
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liquid_viscosity = 0;
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vertex_alpha = 255;
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special_material = NULL;
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special_atlas = NULL;
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@ -424,6 +429,10 @@ enum LightBank
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#define LIQUID_LEVEL_MASK 0x07
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#define LIQUID_FLOW_DOWN_MASK 0x08
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/* maximum amount of liquid in a block */
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#define LIQUID_LEVEL_MAX LIQUID_LEVEL_MASK
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#define LIQUID_LEVEL_SOURCE (LIQUID_LEVEL_MAX+1)
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/*
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This is the stuff what the whole world consists of.
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*/
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