Show a message on how to add markers to maps

mods/ITEMS/mcl_maps/init.lua

@@ -509,6 +509,14 @@ minetest.register_globalstep(function(dtime)
 
 			if texture ~= maps[player] then
 				player:hud_change(hud.map, "text", "[combine:140x140:0,0=mcl_maps_map_background.png:6,6=" .. texture)
+				if nil == maps[player] then
+					-- show tmp message if player
+					-- did not wield a map before
+					mcl_tmp_message.message(
+						player,
+						S("Right click on a banner to add a colored marker.")
+					)
+				end
 				maps[player] = texture
 			end
 

mods/ITEMS/mcl_maps/mod.conf

@@ -1,2 +1,2 @@
 name = mcl_maps
-depends = mcl_banners, mcl_core, mcl_flowers, tga_encoder, tt, mcl_colors, mcl_skins, mcl_util
+depends = mcl_banners, mcl_core, mcl_flowers, tga_encoder, tt, mcl_colors, mcl_skins, mcl_util, mcl_tmp_message