Notify network about network master destruction

api.lua

@@ -224,11 +224,8 @@ end
 industrialtest.api.powerFlow=function(pos)
 	local meta=minetest.get_meta(pos)
 	-- if machine doesn't have network map then it's not capable of transferring power
-	if not meta:contains("industrialtest.network") then
+	local network=industrialtest.api.getNetwork(meta)
-		return false,false
+	if not network or #network==0 then
-	end
-	local network=minetest.deserialize(meta:get_string("industrialtest.network"))
-	if #network==0 then
 		return false,false
 	end
 	local powerFlow=meta:get_int("industrialtest.powerFlow")
@@ -291,9 +288,10 @@ end
 
 -- \brief Creates network map starting from node at pos, optionally omitting node at omit
 -- \param pos vector
+-- \param (optional) addCables bool
 -- \param (optional) omit Vector
 -- \returns table with network map
-industrialtest.api.createNetworkMap=function(pos,omit)
+industrialtest.api.createNetworkMap=function(pos,addCables,omit)
 	local workers={}
 	local map={}
 	local connections=industrialtest.api.getConnections(pos,"i")
@@ -313,6 +311,12 @@ industrialtest.api.createNetworkMap=function(pos,omit)
 					distance=1,
 					flow=def._industrialtest_cableFlow
 				})
+				if addCables then
+					table.insert(map,{
+						position=conn,
+						distance=0
+					})
+				end
 			else
 				local meta=minetest.get_meta(conn)
 				table.insert(map,{
@@ -354,6 +358,12 @@ industrialtest.api.createNetworkMap=function(pos,omit)
 									worker.flow=clampFlow(conn,worker.flow)
 									directionAssigned=true
 								end
+								if addCables then
+									table.insert(map,{
+										position=conn,
+										distance=worker.distance+1,
+									})
+								end
 							else
 								table.insert(map,{
 									position=conn,
@@ -400,7 +410,7 @@ end
 -- \returns nil
 industrialtest.api.createNetworkMapForNode=function(pos,omit)
 	local meta=minetest.get_meta(pos)
-	local network=industrialtest.api.createNetworkMap(pos,omit)
+	local network=industrialtest.api.createNetworkMap(pos,false,omit)
 	meta:set_string("industrialtest.network",minetest.serialize(network))
 end
 
@@ -425,6 +435,16 @@ industrialtest.api.isAttachedToNetwork=function(meta)
 	return networks
 end
 
+-- \brief Returns network master network from it's meta, if meta doesn't contain network map then function returns false
+-- \param meta MetaDataRef
+-- \returns table or bool
+industrialtest.api.getNetwork=function(meta)
+	if not meta:contains("industrialtest.network") then
+		return false
+	end
+	return minetest.deserialize(meta:get_string("industrialtest.network"))
+end
+
 -- \brief Starts node timer of neighbouring nodes with center node
 -- \param pos Vector with position of center node
 -- \returns nil