]> git.lizzy.rs Git - dragonfireclient.git/blobdiff - src/map.cpp
Add API for mods to hook liquid transformation events (#11405)
[dragonfireclient.git] / src / map.cpp
index ebf44381828a70df607f83212ca034868aeaf2ce..30ce064d6a00410edfee53d2b6c01ef1e557f016 100644 (file)
@@ -62,8 +62,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
        Map
 */
 
-Map::Map(std::ostream &dout, IGameDef *gamedef):
-       m_dout(dout),
+Map::Map(IGameDef *gamedef):
        m_gamedef(gamedef),
        m_nodedef(gamedef->ndef())
 {
@@ -89,7 +88,7 @@ void Map::removeEventReceiver(MapEventReceiver *event_receiver)
        m_event_receivers.erase(event_receiver);
 }
 
-void Map::dispatchEvent(MapEditEvent *event)
+void Map::dispatchEvent(const MapEditEvent &event)
 {
        for (MapEventReceiver *event_receiver : m_event_receivers) {
                event_receiver->onMapEditEvent(event);
@@ -144,7 +143,7 @@ bool Map::isNodeUnderground(v3s16 p)
 {
        v3s16 blockpos = getNodeBlockPos(p);
        MapBlock *block = getBlockNoCreateNoEx(blockpos);
-       return block && block->getIsUnderground(); 
+       return block && block->getIsUnderground();
 }
 
 bool Map::isValidPosition(v3s16 p)
@@ -179,7 +178,7 @@ void Map::setNode(v3s16 p, MapNode & n)
        v3s16 blockpos = getNodeBlockPos(p);
        MapBlock *block = getBlockNoCreate(blockpos);
        v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
-       // Never allow placing CONTENT_IGNORE, it fucks up stuff
+       // Never allow placing CONTENT_IGNORE, it causes problems
        if(n.getContent() == CONTENT_IGNORE){
                bool temp_bool;
                errorstream<<"Map::setNode(): Not allowing to place CONTENT_IGNORE"
@@ -274,7 +273,7 @@ bool Map::addNodeWithEvent(v3s16 p, MapNode n, bool remove_metadata)
                succeeded = false;
        }
 
-       dispatchEvent(&event);
+       dispatchEvent(event);
 
        return succeeded;
 }
@@ -299,7 +298,7 @@ bool Map::removeNodeWithEvent(v3s16 p)
                succeeded = false;
        }
 
-       dispatchEvent(&event);
+       dispatchEvent(event);
 
        return succeeded;
 }
@@ -478,6 +477,16 @@ void Map::PrintInfo(std::ostream &out)
 
 #define WATER_DROP_BOOST 4
 
+const static v3s16 liquid_6dirs[6] = {
+       // order: upper before same level before lower
+       v3s16( 0, 1, 0),
+       v3s16( 0, 0, 1),
+       v3s16( 1, 0, 0),
+       v3s16( 0, 0,-1),
+       v3s16(-1, 0, 0),
+       v3s16( 0,-1, 0)
+};
+
 enum NeighborType : u8 {
        NEIGHBOR_UPPER,
        NEIGHBOR_SAME_LEVEL,
@@ -521,23 +530,6 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
        u32 liquid_loop_max = g_settings->getS32("liquid_loop_max");
        u32 loop_max = liquid_loop_max;
 
-#if 0
-
-       /* If liquid_loop_max is not keeping up with the queue size increase
-        * loop_max up to a maximum of liquid_loop_max * dedicated_server_step.
-        */
-       if (m_transforming_liquid.size() > loop_max * 2) {
-               // "Burst" mode
-               float server_step = g_settings->getFloat("dedicated_server_step");
-               if (m_transforming_liquid_loop_count_multiplier - 1.0 < server_step)
-                       m_transforming_liquid_loop_count_multiplier *= 1.0 + server_step / 10;
-       } else {
-               m_transforming_liquid_loop_count_multiplier = 1.0;
-       }
-
-       loop_max *= m_transforming_liquid_loop_count_multiplier;
-#endif
-
        while (m_transforming_liquid.size() != 0)
        {
                // This should be done here so that it is done when continue is used
@@ -568,7 +560,7 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
                switch (liquid_type) {
                        case LIQUID_SOURCE:
                                liquid_level = LIQUID_LEVEL_SOURCE;
-                               liquid_kind = m_nodedef->getId(cf.liquid_alternative_flowing);
+                               liquid_kind = cf.liquid_alternative_flowing_id;
                                break;
                        case LIQUID_FLOWING:
                                liquid_level = (n0.param2 & LIQUID_LEVEL_MASK);
@@ -587,7 +579,6 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
                /*
                        Collect information about the environment
                 */
-               const v3s16 *dirs = g_6dirs;
                NodeNeighbor sources[6]; // surrounding sources
                int num_sources = 0;
                NodeNeighbor flows[6]; // surrounding flowing liquid nodes
@@ -601,16 +592,16 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
                for (u16 i = 0; i < 6; i++) {
                        NeighborType nt = NEIGHBOR_SAME_LEVEL;
                        switch (i) {
-                               case 1:
+                               case 0:
                                        nt = NEIGHBOR_UPPER;
                                        break;
-                               case 4:
+                               case 5:
                                        nt = NEIGHBOR_LOWER;
                                        break;
                                default:
                                        break;
                        }
-                       v3s16 npos = p0 + dirs[i];
+                       v3s16 npos = p0 + liquid_6dirs[i];
                        NodeNeighbor nb(getNode(npos), nt, npos);
                        const ContentFeatures &cfnb = m_nodedef->get(nb.n);
                        switch (m_nodedef->get(nb.n.getContent()).liquid_type) {
@@ -641,20 +632,24 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
                                case LIQUID_SOURCE:
                                        // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
                                        if (liquid_kind == CONTENT_AIR)
-                                               liquid_kind = m_nodedef->getId(cfnb.liquid_alternative_flowing);
-                                       if (m_nodedef->getId(cfnb.liquid_alternative_flowing) != liquid_kind) {
+                                               liquid_kind = cfnb.liquid_alternative_flowing_id;
+                                       if (cfnb.liquid_alternative_flowing_id != liquid_kind) {
                                                neutrals[num_neutrals++] = nb;
                                        } else {
                                                // Do not count bottom source, it will screw things up
-                                               if(dirs[i].Y != -1)
+                                               if(nt != NEIGHBOR_LOWER)
                                                        sources[num_sources++] = nb;
                                        }
                                        break;
                                case LIQUID_FLOWING:
-                                       // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
-                                       if (liquid_kind == CONTENT_AIR)
-                                               liquid_kind = m_nodedef->getId(cfnb.liquid_alternative_flowing);
-                                       if (m_nodedef->getId(cfnb.liquid_alternative_flowing) != liquid_kind) {
+                                       if (nb.t != NEIGHBOR_SAME_LEVEL ||
+                                               (nb.n.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK) {
+                                               // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
+                                               // but exclude falling liquids on the same level, they cannot flow here anyway
+                                               if (liquid_kind == CONTENT_AIR)
+                                                       liquid_kind = cfnb.liquid_alternative_flowing_id;
+                                       }
+                                       if (cfnb.liquid_alternative_flowing_id != liquid_kind) {
                                                neutrals[num_neutrals++] = nb;
                                        } else {
                                                flows[num_flows++] = nb;
@@ -680,7 +675,7 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
                        // 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
                        // it's perfectly safe to use liquid_kind here to determine the new node content.
-                       new_node_content = m_nodedef->getId(m_nodedef->get(liquid_kind).liquid_alternative_source);
+                       new_node_content = m_nodedef->get(liquid_kind).liquid_alternative_source_id;
                } else if (num_sources >= 1 && sources[0].t != NEIGHBOR_LOWER) {
                        // liquid_kind is set properly, see above
                        max_node_level = new_node_level = LIQUID_LEVEL_MAX;
@@ -761,8 +756,8 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
                        // set level to last 3 bits, flowing down bit to 4th bit
                        n0.param2 = (flowing_down ? LIQUID_FLOW_DOWN_MASK : 0x00) | (new_node_level & LIQUID_LEVEL_MASK);
                } else {
-                       // set the liquid level and flow bit to 0
-                       n0.param2 = ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
+                       // set the liquid level and flow bits to 0
+                       n0.param2 &= ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
                }
 
                // change the node.
@@ -834,7 +829,7 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
                m_transforming_liquid.push_back(iter);
 
        voxalgo::update_lighting_nodes(this, changed_nodes, modified_blocks);
-
+       env->getScriptIface()->on_liquid_transformed(changed_nodes);
 
        /* ----------------------------------------------------------------------
         * Manage the queue so that it does not grow indefinately
@@ -1032,24 +1027,95 @@ void Map::removeNodeTimer(v3s16 p)
        block->m_node_timers.remove(p_rel);
 }
 
-bool Map::isOccluded(v3s16 p0, v3s16 p1, float step, float stepfac,
-               float start_off, float end_off, u32 needed_count)
+bool Map::determineAdditionalOcclusionCheck(const v3s16 &pos_camera,
+       const core::aabbox3d<s16> &block_bounds, v3s16 &check)
 {
-       float d0 = (float)BS * p0.getDistanceFrom(p1);
-       v3s16 u0 = p1 - p0;
-       v3f uf = v3f(u0.X, u0.Y, u0.Z) * BS;
-       uf.normalize();
-       v3f p0f = v3f(p0.X, p0.Y, p0.Z) * BS;
+       /*
+               This functions determines the node inside the target block that is
+               closest to the camera position. This increases the occlusion culling
+               accuracy in straight and diagonal corridors.
+               The returned position will be occlusion checked first in addition to the
+               others (8 corners + center).
+               No position is returned if
+               - the closest node is a corner, corners are checked anyway.
+               - the camera is inside the target block, it will never be occluded.
+       */
+#define CLOSEST_EDGE(pos, bounds, axis) \
+       ((pos).axis <= (bounds).MinEdge.axis) ? (bounds).MinEdge.axis : \
+       (bounds).MaxEdge.axis
+
+       bool x_inside = (block_bounds.MinEdge.X <= pos_camera.X) &&
+                       (pos_camera.X <= block_bounds.MaxEdge.X);
+       bool y_inside = (block_bounds.MinEdge.Y <= pos_camera.Y) &&
+                       (pos_camera.Y <= block_bounds.MaxEdge.Y);
+       bool z_inside = (block_bounds.MinEdge.Z <= pos_camera.Z) &&
+                       (pos_camera.Z <= block_bounds.MaxEdge.Z);
+
+       if (x_inside && y_inside && z_inside)
+               return false; // Camera inside target mapblock
+
+       // straight
+       if (x_inside && y_inside) {
+               check = v3s16(pos_camera.X, pos_camera.Y, 0);
+               check.Z = CLOSEST_EDGE(pos_camera, block_bounds, Z);
+               return true;
+       } else if (y_inside && z_inside) {
+               check = v3s16(0, pos_camera.Y, pos_camera.Z);
+               check.X = CLOSEST_EDGE(pos_camera, block_bounds, X);
+               return true;
+       } else if (x_inside && z_inside) {
+               check = v3s16(pos_camera.X, 0, pos_camera.Z);
+               check.Y = CLOSEST_EDGE(pos_camera, block_bounds, Y);
+               return true;
+       }
+
+       // diagonal
+       if (x_inside) {
+               check = v3s16(pos_camera.X, 0, 0);
+               check.Y = CLOSEST_EDGE(pos_camera, block_bounds, Y);
+               check.Z = CLOSEST_EDGE(pos_camera, block_bounds, Z);
+               return true;
+       } else if (y_inside) {
+               check = v3s16(0, pos_camera.Y, 0);
+               check.X = CLOSEST_EDGE(pos_camera, block_bounds, X);
+               check.Z = CLOSEST_EDGE(pos_camera, block_bounds, Z);
+               return true;
+       } else if (z_inside) {
+               check = v3s16(0, 0, pos_camera.Z);
+               check.X = CLOSEST_EDGE(pos_camera, block_bounds, X);
+               check.Y = CLOSEST_EDGE(pos_camera, block_bounds, Y);
+               return true;
+       }
+
+       // Closest node would be a corner, none returned
+       return false;
+}
+
+bool Map::isOccluded(const v3s16 &pos_camera, const v3s16 &pos_target,
+       float step, float stepfac, float offset, float end_offset, u32 needed_count)
+{
+       v3f direction = intToFloat(pos_target - pos_camera, BS);
+       float distance = direction.getLength();
+
+       // Normalize direction vector
+       if (distance > 0.0f)
+               direction /= distance;
+
+       v3f pos_origin_f = intToFloat(pos_camera, BS);
        u32 count = 0;
-       for(float s=start_off; s<d0+end_off; s+=step){
-               v3f pf = p0f + uf * s;
-               v3s16 p = floatToInt(pf, BS);
-               MapNode n = getNode(p);
-               const ContentFeatures &f = m_nodedef->get(n);
-               if(f.drawtype == NDT_NORMAL){
-                       // not transparent, see ContentFeature::updateTextures
+       bool is_valid_position;
+
+       for (; offset < distance + end_offset; offset += step) {
+               v3f pos_node_f = pos_origin_f + direction * offset;
+               v3s16 pos_node = floatToInt(pos_node_f, BS);
+
+               MapNode node = getNode(pos_node, &is_valid_position);
+
+               if (is_valid_position &&
+                               !m_nodedef->get(node).light_propagates) {
+                       // Cannot see through light-blocking nodes --> occluded
                        count++;
-                       if(count >= needed_count)
+                       if (count >= needed_count)
                                return true;
                }
                step *= stepfac;
@@ -1057,53 +1123,68 @@ bool Map::isOccluded(v3s16 p0, v3s16 p1, float step, float stepfac,
        return false;
 }
 
-bool Map::isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes) {
-       v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
-       cpn += v3s16(MAP_BLOCKSIZE / 2, MAP_BLOCKSIZE / 2, MAP_BLOCKSIZE / 2);
-       float step = BS * 1;
-       float stepfac = 1.1;
-       float startoff = BS * 1;
+bool Map::isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes)
+{
+       // Check occlusion for center and all 8 corners of the mapblock
+       // Overshoot a little for less flickering
+       static const s16 bs2 = MAP_BLOCKSIZE / 2 + 1;
+       static const v3s16 dir9[9] = {
+               v3s16( 0,  0,  0),
+               v3s16( 1,  1,  1) * bs2,
+               v3s16( 1,  1, -1) * bs2,
+               v3s16( 1, -1,  1) * bs2,
+               v3s16( 1, -1, -1) * bs2,
+               v3s16(-1,  1,  1) * bs2,
+               v3s16(-1,  1, -1) * bs2,
+               v3s16(-1, -1,  1) * bs2,
+               v3s16(-1, -1, -1) * bs2,
+       };
+
+       v3s16 pos_blockcenter = block->getPosRelative() + (MAP_BLOCKSIZE / 2);
+
+       // Starting step size, value between 1m and sqrt(3)m
+       float step = BS * 1.2f;
+       // Multiply step by each iteraction by 'stepfac' to reduce checks in distance
+       float stepfac = 1.05f;
+
+       float start_offset = BS * 1.0f;
+
        // The occlusion search of 'isOccluded()' must stop short of the target
-       // point by distance 'endoff' (end offset) to not enter the target mapblock.
-       // For the 8 mapblock corners 'endoff' must therefore be the maximum diagonal
-       // of a mapblock, because we must consider all view angles.
+       // point by distance 'end_offset' to not enter the target mapblock.
+       // For the 8 mapblock corners 'end_offset' must therefore be the maximum
+       // diagonal of a mapblock, because we must consider all view angles.
        // sqrt(1^2 + 1^2 + 1^2) = 1.732
-       float endoff = -BS * MAP_BLOCKSIZE * 1.732050807569;
-       s16 bs2 = MAP_BLOCKSIZE / 2 + 1;
+       float end_offset = -BS * MAP_BLOCKSIZE * 1.732f;
+
        // to reduce the likelihood of falsely occluded blocks
        // require at least two solid blocks
        // this is a HACK, we should think of a more precise algorithm
        u32 needed_count = 2;
 
-       return (
-               // For the central point of the mapblock 'endoff' can be halved
-               isOccluded(cam_pos_nodes, cpn,
-                       step, stepfac, startoff, endoff / 2.0f, needed_count) &&
-               isOccluded(cam_pos_nodes, cpn + v3s16(bs2,bs2,bs2),
-                       step, stepfac, startoff, endoff, needed_count) &&
-               isOccluded(cam_pos_nodes, cpn + v3s16(bs2,bs2,-bs2),
-                       step, stepfac, startoff, endoff, needed_count) &&
-               isOccluded(cam_pos_nodes, cpn + v3s16(bs2,-bs2,bs2),
-                       step, stepfac, startoff, endoff, needed_count) &&
-               isOccluded(cam_pos_nodes, cpn + v3s16(bs2,-bs2,-bs2),
-                       step, stepfac, startoff, endoff, needed_count) &&
-               isOccluded(cam_pos_nodes, cpn + v3s16(-bs2,bs2,bs2),
-                       step, stepfac, startoff, endoff, needed_count) &&
-               isOccluded(cam_pos_nodes, cpn + v3s16(-bs2,bs2,-bs2),
-                       step, stepfac, startoff, endoff, needed_count) &&
-               isOccluded(cam_pos_nodes, cpn + v3s16(-bs2,-bs2,bs2),
-                       step, stepfac, startoff, endoff, needed_count) &&
-               isOccluded(cam_pos_nodes, cpn + v3s16(-bs2,-bs2,-bs2),
-                       step, stepfac, startoff, endoff, needed_count));
+       // Additional occlusion check, see comments in that function
+       v3s16 check;
+       if (determineAdditionalOcclusionCheck(cam_pos_nodes, block->getBox(), check)) {
+               // node is always on a side facing the camera, end_offset can be lower
+               if (!isOccluded(cam_pos_nodes, check, step, stepfac, start_offset,
+                               -1.0f, needed_count))
+                       return false;
+       }
+
+       for (const v3s16 &dir : dir9) {
+               if (!isOccluded(cam_pos_nodes, pos_blockcenter + dir, step, stepfac,
+                               start_offset, end_offset, needed_count))
+                       return false;
+       }
+       return true;
 }
 
 /*
        ServerMap
 */
 ServerMap::ServerMap(const std::string &savedir, IGameDef *gamedef,
-               EmergeManager *emerge):
-       Map(dout_server, gamedef),
-       settings_mgr(g_settings, savedir + DIR_DELIM + "map_meta.txt"),
+               EmergeManager *emerge, MetricsBackend *mb):
+       Map(gamedef),
+       settings_mgr(savedir + DIR_DELIM + "map_meta.txt"),
        m_emerge(emerge)
 {
        verbosestream<<FUNCTION_NAME<<std::endl;
@@ -1135,6 +1216,10 @@ ServerMap::ServerMap(const std::string &savedir, IGameDef *gamedef,
        m_savedir = savedir;
        m_map_saving_enabled = false;
 
+       m_save_time_counter = mb->addCounter("minetest_core_map_save_time", "Map save time (in nanoseconds)");
+
+       m_map_compression_level = rangelim(g_settings->getS16("map_compression_level_disk"), -1, 9);
+
        try {
                // If directory exists, check contents and load if possible
                if (fs::PathExists(m_savedir)) {
@@ -1199,20 +1284,7 @@ ServerMap::~ServerMap()
                Close database if it was opened
        */
        delete dbase;
-       if (dbase_ro)
-               delete dbase_ro;
-
-#if 0
-       /*
-               Free all MapChunks
-       */
-       core::map<v2s16, MapChunk*>::Iterator i = m_chunks.getIterator();
-       for(; i.atEnd() == false; i++)
-       {
-               MapChunk *chunk = i.getNode()->getValue();
-               delete chunk;
-       }
-#endif
+       delete dbase_ro;
 }
 
 MapgenParams *ServerMap::getMapgenParams()
@@ -1227,11 +1299,6 @@ u64 ServerMap::getSeed()
        return getMapgenParams()->seed;
 }
 
-s16 ServerMap::getWaterLevel()
-{
-       return getMapgenParams()->water_level;
-}
-
 bool ServerMap::blockpos_over_mapgen_limit(v3s16 p)
 {
        const s16 mapgen_limit_bp = rangelim(
@@ -1251,6 +1318,9 @@ bool ServerMap::initBlockMake(v3s16 blockpos, BlockMakeData *data)
        v3s16 bpmin = EmergeManager::getContainingChunk(blockpos, csize);
        v3s16 bpmax = bpmin + v3s16(1, 1, 1) * (csize - 1);
 
+       if (!m_chunks_in_progress.insert(bpmin).second)
+               return false;
+
        bool enable_mapgen_debug_info = m_emerge->enable_mapgen_debug_info;
        EMERGE_DBG_OUT("initBlockMake(): " PP(bpmin) " - " PP(bpmax));
 
@@ -1266,7 +1336,6 @@ bool ServerMap::initBlockMake(v3s16 blockpos, BlockMakeData *data)
        data->seed = getSeed();
        data->blockpos_min = bpmin;
        data->blockpos_max = bpmax;
-       data->blockpos_requested = blockpos;
        data->nodedef = m_nodedef;
 
        /*
@@ -1304,25 +1373,6 @@ bool ServerMap::initBlockMake(v3s16 blockpos, BlockMakeData *data)
        data->vmanip = new MMVManip(this);
        data->vmanip->initialEmerge(full_bpmin, full_bpmax);
 
-       // Note: we may need this again at some point.
-#if 0
-       // Ensure none of the blocks to be generated were marked as
-       // containing CONTENT_IGNORE
-       for (s16 z = blockpos_min.Z; z <= blockpos_max.Z; z++) {
-               for (s16 y = blockpos_min.Y; y <= blockpos_max.Y; y++) {
-                       for (s16 x = blockpos_min.X; x <= blockpos_max.X; x++) {
-                               core::map<v3s16, u8>::Node *n;
-                               n = data->vmanip->m_loaded_blocks.find(v3s16(x, y, z));
-                               if (n == NULL)
-                                       continue;
-                               u8 flags = n->getValue();
-                               flags &= ~VMANIP_BLOCK_CONTAINS_CIGNORE;
-                               n->setValue(flags);
-                       }
-               }
-       }
-#endif
-
        // Data is ready now.
        return true;
 }
@@ -1333,8 +1383,6 @@ void ServerMap::finishBlockMake(BlockMakeData *data,
        v3s16 bpmin = data->blockpos_min;
        v3s16 bpmax = data->blockpos_max;
 
-       v3s16 extra_borders(1, 1, 1);
-
        bool enable_mapgen_debug_info = m_emerge->enable_mapgen_debug_info;
        EMERGE_DBG_OUT("finishBlockMake(): " PP(bpmin) " - " PP(bpmax));
 
@@ -1388,6 +1436,7 @@ void ServerMap::finishBlockMake(BlockMakeData *data,
                NOTE: Will be saved later.
        */
        //save(MOD_STATE_WRITE_AT_UNLOAD);
+       m_chunks_in_progress.erase(bpmin);
 }
 
 MapSector *ServerMap::createSector(v2s16 p2d)
@@ -1426,116 +1475,6 @@ MapSector *ServerMap::createSector(v2s16 p2d)
        return sector;
 }
 
-#if 0
-/*
-       This is a quick-hand function for calling makeBlock().
-*/
-MapBlock * ServerMap::generateBlock(
-               v3s16 p,
-               std::map<v3s16, MapBlock*> &modified_blocks
-)
-{
-       bool enable_mapgen_debug_info = g_settings->getBool("enable_mapgen_debug_info");
-
-       TimeTaker timer("generateBlock");
-
-       //MapBlock *block = original_dummy;
-
-       v2s16 p2d(p.X, p.Z);
-       v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
-
-       /*
-               Do not generate over-limit
-       */
-       if(blockpos_over_limit(p))
-       {
-               infostream<<FUNCTION_NAME<<": Block position over limit"<<std::endl;
-               throw InvalidPositionException("generateBlock(): pos. over limit");
-       }
-
-       /*
-               Create block make data
-       */
-       BlockMakeData data;
-       initBlockMake(&data, p);
-
-       /*
-               Generate block
-       */
-       {
-               TimeTaker t("mapgen::make_block()");
-               mapgen->makeChunk(&data);
-               //mapgen::make_block(&data);
-
-               if(enable_mapgen_debug_info == false)
-                       t.stop(true); // Hide output
-       }
-
-       /*
-               Blit data back on map, update lighting, add mobs and whatever this does
-       */
-       finishBlockMake(&data, modified_blocks);
-
-       /*
-               Get central block
-       */
-       MapBlock *block = getBlockNoCreateNoEx(p);
-
-#if 0
-       /*
-               Check result
-       */
-       if(block)
-       {
-               bool erroneus_content = false;
-               for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
-               for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
-               for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
-               {
-                       v3s16 p(x0,y0,z0);
-                       MapNode n = block->getNode(p);
-                       if(n.getContent() == CONTENT_IGNORE)
-                       {
-                               infostream<<"CONTENT_IGNORE at "
-                                               <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
-                                               <<std::endl;
-                               erroneus_content = true;
-                               assert(0);
-                       }
-               }
-               if(erroneus_content)
-               {
-                       assert(0);
-               }
-       }
-#endif
-
-#if 0
-       /*
-               Generate a completely empty block
-       */
-       if(block)
-       {
-               for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
-               for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
-               {
-                       for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
-                       {
-                               MapNode n;
-                               n.setContent(CONTENT_AIR);
-                               block->setNode(v3s16(x0,y0,z0), n);
-                       }
-               }
-       }
-#endif
-
-       if(enable_mapgen_debug_info == false)
-               timer.stop(true); // Hide output
-
-       return block;
-}
-#endif
-
 MapBlock * ServerMap::createBlock(v3s16 p)
 {
        /*
@@ -1610,6 +1549,11 @@ MapBlock *ServerMap::getBlockOrEmerge(v3s16 p3d)
        return block;
 }
 
+bool ServerMap::isBlockInQueue(v3s16 pos)
+{
+       return m_emerge && m_emerge->isBlockInQueue(pos);
+}
+
 // N.B.  This requires no synchronization, since data will not be modified unless
 // the VoxelManipulator being updated belongs to the same thread.
 void ServerMap::updateVManip(v3s16 pos)
@@ -1632,140 +1576,6 @@ void ServerMap::updateVManip(v3s16 pos)
        vm->m_is_dirty = true;
 }
 
-s16 ServerMap::findGroundLevel(v2s16 p2d)
-{
-#if 0
-       /*
-               Uh, just do something random...
-       */
-       // Find existing map from top to down
-       s16 max=63;
-       s16 min=-64;
-       v3s16 p(p2d.X, max, p2d.Y);
-       for(; p.Y>min; p.Y--)
-       {
-               MapNode n = getNodeNoEx(p);
-               if(n.getContent() != CONTENT_IGNORE)
-                       break;
-       }
-       if(p.Y == min)
-               goto plan_b;
-       // If this node is not air, go to plan b
-       if(getNodeNoEx(p).getContent() != CONTENT_AIR)
-               goto plan_b;
-       // Search existing walkable and return it
-       for(; p.Y>min; p.Y--)
-       {
-               MapNode n = getNodeNoEx(p);
-               if(content_walkable(n.d) && n.getContent() != CONTENT_IGNORE)
-                       return p.Y;
-       }
-
-       // Move to plan b
-plan_b:
-#endif
-
-       /*
-               Determine from map generator noise functions
-       */
-
-       s16 level = m_emerge->getGroundLevelAtPoint(p2d);
-       return level;
-
-       //double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
-       //return (s16)level;
-}
-
-bool ServerMap::loadFromFolders() {
-       if (!dbase->initialized() &&
-                       !fs::PathExists(m_savedir + DIR_DELIM + "map.sqlite"))
-               return true;
-       return false;
-}
-
-void ServerMap::createDirs(const std::string &path)
-{
-       if (!fs::CreateAllDirs(path)) {
-               m_dout<<"ServerMap: Failed to create directory "
-                               <<"\""<<path<<"\""<<std::endl;
-               throw BaseException("ServerMap failed to create directory");
-       }
-}
-
-std::string ServerMap::getSectorDir(v2s16 pos, int layout)
-{
-       char cc[9];
-       switch(layout)
-       {
-               case 1:
-                       porting::mt_snprintf(cc, sizeof(cc), "%.4x%.4x",
-                               (unsigned int) pos.X & 0xffff,
-                               (unsigned int) pos.Y & 0xffff);
-
-                       return m_savedir + DIR_DELIM + "sectors" + DIR_DELIM + cc;
-               case 2:
-                       porting::mt_snprintf(cc, sizeof(cc), (std::string("%.3x") + DIR_DELIM + "%.3x").c_str(),
-                               (unsigned int) pos.X & 0xfff,
-                               (unsigned int) pos.Y & 0xfff);
-
-                       return m_savedir + DIR_DELIM + "sectors2" + DIR_DELIM + cc;
-               default:
-                       assert(false);
-                       return "";
-       }
-}
-
-v2s16 ServerMap::getSectorPos(const std::string &dirname)
-{
-       unsigned int x = 0, y = 0;
-       int r;
-       std::string component;
-       fs::RemoveLastPathComponent(dirname, &component, 1);
-       if(component.size() == 8)
-       {
-               // Old layout
-               r = sscanf(component.c_str(), "%4x%4x", &x, &y);
-       }
-       else if(component.size() == 3)
-       {
-               // New layout
-               fs::RemoveLastPathComponent(dirname, &component, 2);
-               r = sscanf(component.c_str(), (std::string("%3x") + DIR_DELIM + "%3x").c_str(), &x, &y);
-               // Sign-extend the 12 bit values up to 16 bits...
-               if(x & 0x800) x |= 0xF000;
-               if(y & 0x800) y |= 0xF000;
-       }
-       else
-       {
-               r = -1;
-       }
-
-       FATAL_ERROR_IF(r != 2, "getSectorPos()");
-       v2s16 pos((s16)x, (s16)y);
-       return pos;
-}
-
-v3s16 ServerMap::getBlockPos(const std::string &sectordir, const std::string &blockfile)
-{
-       v2s16 p2d = getSectorPos(sectordir);
-
-       if(blockfile.size() != 4){
-               throw InvalidFilenameException("Invalid block filename");
-       }
-       unsigned int y;
-       int r = sscanf(blockfile.c_str(), "%4x", &y);
-       if(r != 1)
-               throw InvalidFilenameException("Invalid block filename");
-       return v3s16(p2d.X, y, p2d.Y);
-}
-
-std::string ServerMap::getBlockFilename(v3s16 p)
-{
-       char cc[5];
-       porting::mt_snprintf(cc, sizeof(cc), "%.4x", (unsigned int)p.Y&0xffff);
-       return cc;
-}
-
 void ServerMap::save(ModifiedState save_level)
 {
        if (!m_map_saving_enabled) {
@@ -1773,6 +1583,8 @@ void ServerMap::save(ModifiedState save_level)
                return;
        }
 
+       u64 start_time = porting::getTimeNs();
+
        if(save_level == MOD_STATE_CLEAN)
                infostream<<"ServerMap: Saving whole map, this can take time."
                                <<std::endl;
@@ -1823,22 +1635,21 @@ void ServerMap::save(ModifiedState save_level)
        */
        if(save_level == MOD_STATE_CLEAN
                        || block_count != 0) {
-               infostream<<"ServerMap: Written: "
-                               <<block_count<<" block files"
-                               <<", "<<block_count_all<<" blocks in memory."
-                               <<std::endl;
+               infostream << "ServerMap: Written: "
+                               << block_count << " blocks"
+                               << ", " << block_count_all << " blocks in memory."
+                               << std::endl;
                PrintInfo(infostream); // ServerMap/ClientMap:
                infostream<<"Blocks modified by: "<<std::endl;
                modprofiler.print(infostream);
        }
+
+       auto end_time = porting::getTimeNs();
+       m_save_time_counter->increment(end_time - start_time);
 }
 
 void ServerMap::listAllLoadableBlocks(std::vector<v3s16> &dst)
 {
-       if (loadFromFolders()) {
-               errorstream << "Map::listAllLoadableBlocks(): Result will be missing "
-                               << "all blocks that are stored in flat files." << std::endl;
-       }
        dbase->listAllLoadableBlocks(dst);
        if (dbase_ro)
                dbase_ro->listAllLoadableBlocks(dst);
@@ -1899,10 +1710,10 @@ void ServerMap::endSave()
 
 bool ServerMap::saveBlock(MapBlock *block)
 {
-       return saveBlock(block, dbase);
+       return saveBlock(block, dbase, m_map_compression_level);
 }
 
-bool ServerMap::saveBlock(MapBlock *block, MapDatabase *db)
+bool ServerMap::saveBlock(MapBlock *block, MapDatabase *db, int compression_level)
 {
        v3s16 p3d = block->getPos();
 
@@ -1922,7 +1733,7 @@ bool ServerMap::saveBlock(MapBlock *block, MapDatabase *db)
        */
        std::ostringstream o(std::ios_base::binary);
        o.write((char*) &version, 1);
-       block->serialize(o, version, true);
+       block->serialize(o, version, true, compression_level);
 
        bool ret = db->saveBlock(p3d, o.str());
        if (ret) {
@@ -1932,83 +1743,6 @@ bool ServerMap::saveBlock(MapBlock *block, MapDatabase *db)
        return ret;
 }
 
-void ServerMap::loadBlock(const std::string &sectordir, const std::string &blockfile,
-               MapSector *sector, bool save_after_load)
-{
-       std::string fullpath = sectordir + DIR_DELIM + blockfile;
-       try {
-               std::ifstream is(fullpath.c_str(), std::ios_base::binary);
-               if (!is.good())
-                       throw FileNotGoodException("Cannot open block file");
-
-               v3s16 p3d = getBlockPos(sectordir, blockfile);
-               v2s16 p2d(p3d.X, p3d.Z);
-
-               assert(sector->getPos() == p2d);
-
-               u8 version = SER_FMT_VER_INVALID;
-               is.read((char*)&version, 1);
-
-               if(is.fail())
-                       throw SerializationError("ServerMap::loadBlock(): Failed"
-                                       " to read MapBlock version");
-
-               /*u32 block_size = MapBlock::serializedLength(version);
-               SharedBuffer<u8> data(block_size);
-               is.read((char*)*data, block_size);*/
-
-               // This will always return a sector because we're the server
-               //MapSector *sector = emergeSector(p2d);
-
-               MapBlock *block = NULL;
-               bool created_new = false;
-               block = sector->getBlockNoCreateNoEx(p3d.Y);
-               if(block == NULL)
-               {
-                       block = sector->createBlankBlockNoInsert(p3d.Y);
-                       created_new = true;
-               }
-
-               // Read basic data
-               block->deSerialize(is, version, true);
-
-               // If it's a new block, insert it to the map
-               if (created_new) {
-                       sector->insertBlock(block);
-                       ReflowScan scanner(this, m_emerge->ndef);
-                       scanner.scan(block, &m_transforming_liquid);
-               }
-
-               /*
-                       Save blocks loaded in old format in new format
-               */
-
-               if(version < SER_FMT_VER_HIGHEST_WRITE || save_after_load)
-               {
-                       saveBlock(block);
-
-                       // Should be in database now, so delete the old file
-                       fs::RecursiveDelete(fullpath);
-               }
-
-               // We just loaded it from the disk, so it's up-to-date.
-               block->resetModified();
-
-       }
-       catch(SerializationError &e)
-       {
-               warningstream<<"Invalid block data on disk "
-                               <<"fullpath="<<fullpath
-                               <<" (SerializationError). "
-                               <<"what()="<<e.what()
-                               <<std::endl;
-                               // Ignoring. A new one will be generated.
-               abort();
-
-               // TODO: Backup file; name is in fullpath.
-       }
-}
-
 void ServerMap::loadBlock(std::string *blob, v3s16 p3d, MapSector *sector, bool save_after_load)
 {
        try {
@@ -2086,39 +1820,7 @@ MapBlock* ServerMap::loadBlock(v3s16 blockpos)
                        loadBlock(&ret, blockpos, createSector(p2d), false);
                }
        } else {
-               // Not found in database, try the files
-
-               // The directory layout we're going to load from.
-               //  1 - original sectors/xxxxzzzz/
-               //  2 - new sectors2/xxx/zzz/
-               //  If we load from anything but the latest structure, we will
-               //  immediately save to the new one, and remove the old.
-               std::string sectordir1 = getSectorDir(p2d, 1);
-               std::string sectordir;
-               if (fs::PathExists(sectordir1)) {
-                       sectordir = sectordir1;
-               } else {
-                       sectordir = getSectorDir(p2d, 2);
-               }
-
-               /*
-               Make sure sector is loaded
-                */
-
-               MapSector *sector = getSectorNoGenerate(p2d);
-
-               /*
-               Make sure file exists
-                */
-
-               std::string blockfilename = getBlockFilename(blockpos);
-               if (!fs::PathExists(sectordir + DIR_DELIM + blockfilename))
-                       return NULL;
-
-               /*
-               Load block and save it to the database
-                */
-               loadBlock(sectordir, blockfilename, sector, true);
+               return NULL;
        }
 
        MapBlock *block = getBlockNoCreateNoEx(blockpos);
@@ -2134,7 +1836,7 @@ MapBlock* ServerMap::loadBlock(v3s16 blockpos)
                        for (it = modified_blocks.begin();
                                        it != modified_blocks.end(); ++it)
                                event.modified_blocks.insert(it->first);
-                       dispatchEvent(&event);
+                       dispatchEvent(event);
                }
        }
        return block;