enable/disable RDS messages

broadcast.lua

@@ -5,7 +5,7 @@ function ham_radio.get_broadcast_messages(frequency)
     if transmitter.broadcast_message ~= "" then
       -- construct message
       local message = table.concat({
-        '[ Radio Broadcast: ',
+        '[ Radio | ',
         transmitter.operated_by,
         ' ] ',
         transmitter.broadcast_message,
@@ -25,7 +25,19 @@ function ham_radio:update_broadcast(player)
     return
   end
 
-  local frequency = item:get_meta():get_string("frequency")
+  local meta = item:get_meta()
+  local frequency = meta:get_string("frequency")
+  local broadcast_disabled = meta:get_string("broadcast_disabled")
+
+  if frequency == "" then
+    return
+  end
+
+  if broadcast_disabled == "true" then
+    -- disabled receiving broadcast messages
+    ham_radio.player_broadcasts[name] = nil
+    return
+  end
 
   if ham_radio.player_broadcasts[name] == nil then
     ham_radio.player_broadcasts[name] = ham_radio.get_broadcast_messages(frequency)

config.lua

@@ -22,5 +22,5 @@ ham_radio.settings = {
   },
   -- digiline config
   digiline_channel = "ham_radio",
-  digiline_broadcast_channel = "ham_radio_broadcast",
+  digiline_broadcast_channel = "ham_radio_rds",
 }

digiline.lua

@@ -38,7 +38,7 @@ ham_radio.digiline_effector = function(pos, _, channel, msg)
       ham_radio.save_transmitter(pos, meta)  
     end
 
-  elseif msg.command == "broadcast" or msg.command == "message" or msg.command == "broadcast_message" then
+  elseif msg.command == "rds" or msg.command == "message" or msg.command == "rds_message" then
     meta:set_string("broadcast_message", msg.value)
     ham_radio.transmitter_update_infotext(meta)
     ham_radio.save_transmitter(pos, meta)  

hud.lua

@@ -39,9 +39,18 @@ function ham_radio.toggle_hud(player)
       hud_elem_type = "text",
       text = "",
       position  = hud_pos,
-      offset    = { x = 0, y = 5 },
-      alignment = 0,
-      number = 0xFFFFFF,
+      offset    = { x = -220, y = 5 },
+      alignment = { x = 1, y = 0},
+      number = 0x999999,
+      scale= { x = 100, y = 20 },
+    }),
+    broadcast = player:hud_add({
+      hud_elem_type = "text",
+      text = "",
+      position  = hud_pos,
+      offset    = { x = 220, y = 5 },
+      alignment = { x = -1, y = 0},
+      number = 0x999999,
       scale= { x = 100, y = 20 },
     }),
 	  signal_meter = player:hud_add({
@@ -86,8 +95,23 @@ function ham_radio:update_hud_display(player)
       end
     end
   end
-  local text = "FQ "..tostring(meta:get_string("frequency"))
-  player:hud_change(self.playerhuds[name].frequency, "text", text)
+
+  if frequency == "" then
+    player:hud_change(self.playerhuds[name].frequency, "text", "FQ ---")
+    player:hud_change(self.playerhuds[name].frequency, "number", "0x999999")
+  else
+    player:hud_change(self.playerhuds[name].frequency, "text", "FQ "..frequency)
+    player:hud_change(self.playerhuds[name].frequency, "number", "0xFCAD00")
+  end
+
+  if meta:get_string("broadcast_disabled") == "" then
+    player:hud_change(self.playerhuds[name].broadcast, "text", "RDS ON")
+    player:hud_change(self.playerhuds[name].broadcast, "number", "0xFCAD00")
+  else
+    player:hud_change(self.playerhuds[name].broadcast, "text", "RDS off")
+    player:hud_change(self.playerhuds[name].broadcast, "number", "0x999999")
+  end
+  
   player:hud_change(
     self.playerhuds[name].signal_level,
     "scale",

receiver.lua

@@ -3,6 +3,7 @@ minetest.register_tool("ham_radio:handheld_receiver", {
   wield_image = "ham_radio_receiver_handheld.png",
   inventory_image = "ham_radio_receiver_handheld.png",
   groups = { disable_repair = 1 },
+  -- left click - change frequency
   on_use = function(itemstack, user, pointed_thing)
     local meta = itemstack:get_meta()
     local frequency = meta:get_string("frequency")
@@ -19,6 +20,17 @@ minetest.register_tool("ham_radio:handheld_receiver", {
     )
     return itemstack
   end,
+  -- right click - RDS on/off
+  on_secondary_use = function(itemstack, user, pointed_thing)
+    local meta = itemstack:get_meta()
+    local is_broadcast_disabled = meta:get_string("broadcast_disabled")
+    if is_broadcast_disabled == "" then
+      meta:set_string("broadcast_disabled", "true")
+    else
+      meta:set_string("broadcast_disabled", "")
+    end
+    return itemstack
+  end
 })
 
 minetest.register_on_player_receive_fields(function(player, formname, fields)

transmitter.lua

@@ -43,7 +43,7 @@ minetest.register_node("ham_radio:transmitter", {
         "tooltip[frequency;Integer number ",
           ham_radio.settings.frequency.min,"-",
           ham_radio.settings.frequency.max, "]",
-        "field[0.25,3.5;7,1;broadcast_message;Broadcast message;${broadcast_message}]",
+        "field[0.25,3.5;7,1;broadcast_message;RDS message;${broadcast_message}]",
         "button_exit[2,4.5;3,1;;Done]"
       },'')
     )