make mapping kit requirement more flexible

settlements/buildings.lua

@@ -13,9 +13,12 @@ local settlement_waypoint_def = {
 	default_color = 0xFFFFFF,
 	discovery_volume_radius = tonumber(minetest.settings:get("settlements_discovery_range")) or 30,
 }
-if minetest.settings:get_bool("settlements_hud_requires_mapping_kit", true)
-	and minetest.registered_items["map:mapping_kit"] then
-	settlement_waypoint_def.visibility_requires_item = "map:mapping_kit"
+if minetest.settings:get_bool("settlements_hud_requires_item", true) then
+	local item_required = minetest.settings:get("settlements_hud_item_required")
+	if item_required == nil or item_required == "" then
+		item_required = "map:mapping_kit"
+	end	
+	settlement_waypoint_def.visibility_requires_item = item_required
 end
 if minetest.settings:get_bool("settlements_show_in_hud", true) then
 	settlement_waypoint_def.visibility_volume_radius = tonumber(minetest.settings:get("settlements_visibility_range")) or 600

settlements/mod.conf

@@ -1,4 +1,4 @@
 name = settlements
 description = API for adding small settlements to map generation.
 depends = named_waypoints
-optional_depends = commoditymarket, map, intllib
+optional_depends = commoditymarket, intllib

settlements/settingtypes.txt

@@ -7,8 +7,10 @@ settlements_generate_books (Generate books to populate shelves in settlements) b
 #existing discoveries will not be removed and will be visible again if
 #this is reenabled)
 settlements_show_in_hud (Show settlement names in HUD) bool true
-#Players can still discover the locations of settlements without a map, but waypoints
-#will only be visible in their hud if they have a mapping kit in their inventory
-settlements_hud_requires_mapping_kit (Require mapping kit to view waypoints) bool true
+settlements_hud_requires_item (Require an item to view waypoints) bool true
+#Players can still discover the locations of settlements without this, but waypoints
+#will only be visible in their hud if they have this item in their inventory. You can also
+#specify "group:groupname" here. Leave it blank to default to map:mapping_kit.
+settlements_hud_item_required (Specify the item or group required) string map:mapping_kit
 settlements_discovery_range (Settlement discovery range) int 30
 settlements_visibility_range (Settlement visibility range) int 600