init, changed a few things for GEIGERnet-Server, added sounds for receiving RDS message

beacon.lua

@@ -0,0 +1,41 @@
+minetest.register_node("ham_radio:beacon", {
+  description = "Radio Beacon",
+  tiles = {
+    "ham_radio_transmitter_top.png",
+    "ham_radio_transmitter_top.png",
+    "ham_radio_transmitter_side.png",
+    "ham_radio_transmitter_side.png",
+    "ham_radio_transmitter_side.png",
+    "ham_radio_beacon_front.png"
+  },
+  groups = {cracky=2,oddly_breakable_by_hand=2},
+  sounds = default.node_sound_metal_defaults(),
+  paramtype2 = "facedir",
+  drawtype = "nodebox",
+  paramtype = "light",
+  node_box = {
+    type = "fixed",
+    fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+  },
+  light_source = 3,
+  after_place_node = function(pos, placer)
+    local meta = minetest.get_meta(pos);
+    if minetest.is_player(placer) then
+      local name = placer:get_player_name()
+      meta:set_string('operated_by', name)
+      ham_radio.play_tuning_sound(placer)
+    end
+    meta:set_string("frequency", ham_radio.find_free_frequency(ham_radio.settings.beacon_frequency))
+    ham_radio.transmitter_update_infotext(meta)
+    ham_radio.save_transmitter(pos, meta)
+  end,
+  can_dig = function(pos,player)
+    local meta = minetest.get_meta(pos);
+    local inv = meta:get_inventory()
+    local name = player:get_player_name()
+    return inv:is_empty("main") and not minetest.is_protected(pos, name)
+  end,
+  after_dig_node = function(pos, oldnode, oldmetadata, player)
+    ham_radio.delete_transmitter(pos)
+  end,
+});