Remove disconnected machines after cable is destructed

cables.lua

@@ -21,15 +21,29 @@ cable.onConstruct=function(pos)
 	local connections=industrialtest.api.getConnections(pos)
 	for _,conn in ipairs(connections) do
 		local meta=minetest.get_meta(conn)
-		local networks=industrialtest.api.isAttachedToNetwork(meta)
-		if networks then
-			for _,network in ipairs(networks) do
-				industrialtest.api.createNetworkMapForNode(network)
+		if industrialtest.api.isNetworkMaster(meta) then
+			industrialtest.api.createNetworkMapForNode(conn)
+		else
+			local networks=industrialtest.api.isAttachedToNetwork(meta)
+			if networks then
+				for _,network in ipairs(networks) do
+					industrialtest.api.createNetworkMapForNode(network)
+				end
 			end
 		end
 	end
 end
 
+cable.onDestruct=function(pos)
+	local meta=minetest.get_meta(pos)
+	local networks=industrialtest.api.isAttachedToNetwork(meta)
+	if networks then
+		for _,network in ipairs(networks) do
+			industrialtest.api.createNetworkMapForNode(network,pos)
+		end
+	end
+end
+
 local function registerCable(name,displayName,size,flow,registerInsulated)
 	local definition={
 		description=S(displayName.." Cable"),
@@ -104,6 +118,7 @@ local function registerCable(name,displayName,size,flow,registerInsulated)
 			"group:_industrialtest_cable"
 		},
 		on_construct=cable.onConstruct,
+		on_destruct=cable.onDestruct,
 		_industrialtest_cableFlow=flow
 	}
 	if industrialtest.mtgAvailable then