Added hanging explanation to lua doc

- hanging_node: drops node(s) beneath it if they contain hanging_node group. Can only place node when top node is haning_node or walkable true

builtin/falling.lua

@@ -161,6 +161,17 @@ function nodeupdate_single(p, delay)
 		end
 	end
 	
+	if minetest.get_node_group(n.name, "hanging_node") ~= 0 then
+		p_top = {x=p.x, y=p.y+1, z=p.z}
+		n_top = minetest.env:get_node(p_top)
+		if minetest.registered_nodes[n_top.name].walkable == true then return end
+		if minetest.get_node_group(n_top.name, "hanging_node") ~= 0 == false then
+			drop_attached_node(p)
+			nodeupdate(p)
+		end
+		return
+	end
+	
 	if minetest.get_node_group(n.name, "attached_node") ~= 0 then
 		if not check_attached_node(p, n) then
 			drop_attached_node(p)

doc/lua_api.txt

@@ -528,7 +528,8 @@ Special groups
 - attached_node: if the node under it is not a walkable block the node will be
                   dropped as an item. If the node is wallmounted the
                   wallmounted direction is checked.
-
+- hanging_node: drops node(s) beneath it if they contain hanging_node group. 
+                  Can only place node when top node is haning_node or walkable true
 Known damage and digging time defining groups
 ----------------------------------------------
 - crumbly: dirt, sand

src/collision.cpp

@@ -192,7 +192,7 @@ bool wouldCollideWithCeiling(
 collisionMoveResult collisionMoveSimple(Environment *env, IGameDef *gamedef,
 		f32 pos_max_d, const aabb3f &box_0,
 		f32 stepheight, f32 dtime,
-		v3f &pos_f, v3f &speed_f, v3f &accel_f)
+		v3f &pos_f, v3f &speed_f, v3f &accel_f,ActiveObject* self)
 {
 	Map *map = &env->getMap();
 	//TimeTaker tt("collisionMoveSimple");
@@ -300,9 +300,11 @@ collisionMoveResult collisionMoveSimple(Environment *env, IGameDef *gamedef,
 			c_env->getActiveObjects(pos_f,distance * 1.5,clientobjects);
 			for (int i=0; i < clientobjects.size(); i++)
 			{
+				if ((self == 0) || (self != clientobjects[i].obj)) {
 					objects.push_back((ActiveObject*)clientobjects[i].obj);
 				}
 			}
+		}
 		else
 #endif
 		{
@@ -314,10 +316,12 @@ collisionMoveResult collisionMoveSimple(Environment *env, IGameDef *gamedef,
 				for (std::set<u16>::iterator iter = s_objects.begin(); iter != s_objects.end(); iter++)
 				{
 					ServerActiveObject *current = s_env->getActiveObject(*iter);
+					if ((self == 0) || (self != current)) {
 						objects.push_back((ActiveObject*)current);
 					}
 				}
 			}
+		}
 
 		for (std::list<ActiveObject*>::const_iterator iter = objects.begin();iter != objects.end(); ++iter)
 		{
@@ -458,8 +462,9 @@ collisionMoveResult collisionMoveSimple(Environment *env, IGameDef *gamedef,
 			if (is_object[nearest_boxindex]) {
 				info.type = COLLISION_OBJECT;
 			}
-			else
+			else {
 				info.type = COLLISION_NODE;
+			}
 			info.node_p = node_positions[nearest_boxindex];
 			info.bouncy = bouncy;
 			info.old_speed = speed_f;

src/collision.h

@@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 class Map;
 class IGameDef;
 class Environment;
+class ActiveObject;
 
 enum CollisionType
 {
@@ -70,7 +71,7 @@ struct collisionMoveResult
 collisionMoveResult collisionMoveSimple(Environment *env,IGameDef *gamedef,
 		f32 pos_max_d, const aabb3f &box_0,
 		f32 stepheight, f32 dtime,
-		v3f &pos_f, v3f &speed_f, v3f &accel_f);
+		v3f &pos_f, v3f &speed_f, v3f &accel_f,ActiveObject* self=0);
 
 #if 0
 // This doesn't seem to work and isn't used

src/content_cao.cpp

@@ -1152,7 +1152,7 @@ public:
 				v3f p_acceleration = m_acceleration;
 				moveresult = collisionMoveSimple(env,env->getGameDef(),
 						pos_max_d, box, stepheight, dtime,
-						p_pos, p_velocity, p_acceleration);
+						p_pos, p_velocity, p_acceleration,this);
 				// Apply results
 				m_position = p_pos;
 				m_velocity = p_velocity;

src/content_sao.cpp

@@ -502,7 +502,7 @@ void LuaEntitySAO::step(float dtime, bool send_recommended)
 			v3f p_acceleration = m_acceleration;
 			moveresult = collisionMoveSimple(m_env,m_env->getGameDef(),
 					pos_max_d, box, stepheight, dtime,
-					p_pos, p_velocity, p_acceleration);
+					p_pos, p_velocity, p_acceleration,this);
 			// Apply results
 			m_base_position = p_pos;
 			m_velocity = p_velocity;

src/emerge.cpp

@@ -96,9 +96,23 @@ EmergeManager::~EmergeManager() {
 		delete emergethread[i];
 		delete mapgen[i];
 	}
+	emergethread.clear();
+
+	for (unsigned int i = 0; i < mapgen.size(); i++)
+		delete mapgen[i];
+	mapgen.clear();
+
+	for (unsigned int i = 0; i < ores.size(); i++)
+		delete ores[i];
+	ores.clear();
+	
+	for (std::map<std::string, MapgenFactory *>::iterator iter = mglist.begin();
+			iter != mglist.end(); iter ++) {
+		delete iter->second;
+	}
+	mglist.clear();
 
 	delete biomedef;
-	delete params;
 }
 
 

src/map.cpp

@@ -2494,6 +2494,8 @@ ServerMap::~ServerMap()
 		delete chunk;
 	}
 #endif
+
+	delete m_mgparams;
 }
 
 bool ServerMap::initBlockMake(BlockMakeData *data, v3s16 blockpos)

src/pathfinder.cpp

@@ -687,9 +687,8 @@ bool pathfinder::update_all_costs(	v3s16 ipos,
 
 				if ((g_pos2.totalcost < 0) ||
 						(g_pos2.totalcost > new_cost)) {
-					int old_cost = g_pos2.totalcost;
 					DEBUG_OUT(LVL "Pathfinder: updating path at: "<<
-							PPOS(ipos2) << " from: " << old_cost << " to "<<
+							PPOS(ipos2) << " from: " << g_pos2.totalcost << " to "<<
 							new_cost << std::endl);
 					if (update_all_costs(ipos2,invert(directions[i]),
 											new_cost,level)) {
@@ -847,9 +846,8 @@ bool pathfinder::update_cost_heuristic(	v3s16 ipos,
 
 				if ((g_pos2.totalcost < 0) ||
 						(g_pos2.totalcost > new_cost)) {
-					int old_cost = g_pos2.totalcost;
 					DEBUG_OUT(LVL "Pathfinder: updating path at: "<<
-							PPOS(ipos2) << " from: " << old_cost << " to "<<
+							PPOS(ipos2) << " from: " << g_pos2.totalcost << " to "<<
 							new_cost << " srcdir=" <<
 							PPOS(invert(direction))<< std::endl);
 					if (update_cost_heuristic(ipos2,invert(direction),

src/scriptapi_env.cpp

@@ -664,7 +664,9 @@ int EnvRef::l_line_of_sight(lua_State *L) {
 	if(lua_isnumber(L, 3))
 		stepsize = lua_tonumber(L, 3);
 
-	return (env->line_of_sight(pos1,pos2,stepsize));
+	lua_pushboolean(L, env->line_of_sight(pos1,pos2,stepsize));
+
+	return 1;
 }
 
 int EnvRef::l_find_path(lua_State *L)