allow to change owner in fs_initial_config.lua

fs_initial_config.lua

@@ -39,6 +39,15 @@ yl_speak_up.input_fs_initial_config = function(player, formname, fields)
 	-- sensible length limit
 	elseif(string.len(fields.n_npc)>40 or string.len(fields.n_description)>40) then
 		error_msg = "The name and description of your NPC\ncannot be longer than 40 characters."
+	-- want to change the owner?
+	elseif(fields.n_owner and fields.n_owner ~= yl_speak_up.npc_owner[ n_id ]) then
+		if(    not(minetest.check_player_privs(player, {npc_talk_master=true}))) then
+			error_msg = "You need the \"npc_talk_master\" priv\nin order to change the owner."
+		elseif(not(minetest.check_player_privs(fields.n_owner, {npc_talk_owner=true}))) then
+			error_msg = "The NPC can only be owned by players that\n"..
+				    "have the \"npc_talk_owner\" priv. Else the\n"..
+				    "new owner could not edit his own NPC."
+		end
 	end
 	if(error_msg) then
 		yl_speak_up.show_fs(player, "msg", { input_to = "yl_speak_up:initial_config",
@@ -57,6 +66,17 @@ yl_speak_up.input_fs_initial_config = function(player, formname, fields)
 		end
 	end
 
+
+	-- we checked earlier if the player doing this change and the
+	-- player getting the NPC have appropriate privs
+	if(fields.n_owner ~= yl_speak_up.npc_owner[ n_id ]) then
+		yl_speak_up.log_change(pname, n_id,
+			"Owner changed from "..tostring(yl_speak_up.npc_owner[ n_id ])..
+			" to "..tostring(fields.n_owner).." for "..
+			"NPC name: \""..tostring(fields.n_npc))
+		yl_speak_up.npc_owner[ n_id ] = fields.n_owner
+	end
+
 	-- give the NPC its first dialog
 	if(not(dialog) or count==0) then
 		local f = {}
@@ -91,6 +111,7 @@ yl_speak_up.input_fs_initial_config = function(player, formname, fields)
 			"NPC name: \""..tostring(fields.n_npc)..
 			"\" Description: \""..tostring(fields.n_description).."\"")
 	end
+
 	dialog = yl_speak_up.speak_to[pname].dialog
 
 	-- show nametag etc.
@@ -128,14 +149,15 @@ yl_speak_up.get_fs_initial_config = function(player, n_id, d_id, is_initial_conf
 	local tmp_name = n_id
 	local tmp_descr = "A new NPC without description"
 	local tmp_text = "Please provide your new NPC with a name and description!"
+	local tmp_owner = (yl_speak_up.npc_owner[ n_id ] or "- none -")
 	-- use existing name and description as presets when just editing
 	if(not(is_initial_config)) then
 		local dialog = yl_speak_up.speak_to[pname].dialog
-		tmp_name = dialog.n_npc
+		tmp_name = (dialog.n_npc or tmp_name)
-		tmp_descr = dialog.n_description
+		tmp_descr = (dialog.n_description or tmp_descr)
 		tmp_text = "You can change the name and description of your NPC."
 	end
-	local formspec = "size[10,4]"..
+	local formspec = "size[10,5]"..
 		"label[0.2,0.2;"..tmp_text.."]"..
 		-- name of the npc
 		"label[0.2,1.05;Name:]"..
@@ -145,9 +167,14 @@ yl_speak_up.get_fs_initial_config = function(player, n_id, d_id, is_initial_conf
 		"label[0.2,2.05;Description:]"..
 		"field[2.0,2.2;8,0.9;n_description;;"..minetest.formspec_escape(tmp_descr).."]"..
 		"tooltip[n_description;n_description: A description for the NPC;#FFFFFF;#000000]"..
+		-- the owner of the NPC
+		"label[0.2,3.05;Owner:]"..
+		"field[2.0,3.2;8,0.9;n_owner;;"..minetest.formspec_escape(tmp_owner).."]"..
+		"tooltip[n_owner;The owner of the NPC. This can only be changed\n"..
+			"if you have the npc_talk_master priv.;#FFFFFF;#000000]"..
 		-- save and exit buttons
-		"button_exit[3.2,3.2;2,0.9;save_initial_config;Save]"..
+		"button_exit[3.2,4.2;2,0.9;save_initial_config;Save]"..
-		"button_exit[5.4,3.2;2,0.9;exit;Exit]"
+		"button_exit[5.4,4.2;2,0.9;exit;Exit]"
 	-- show the formspec to the player
 	return formspec
 end