ordering / stop sound

api.lua

@@ -11,5 +11,11 @@ def = {
 --]]
 
 soundblock.register = function(def)
-  soundblock.sounds[def.key] = def
+  table.insert(soundblock.sounds, def)
 end
+
+minetest.register_on_mods_loaded(function()
+  table.sort(soundblock.sounds, function(a, b)
+    return a.key < b.key
+  end)
+end)

form.lua

@@ -26,18 +26,16 @@ soundblock.showform = function(pos, _, player)
 
 	local selected_sound_key = meta:get_string("selected_sound_key")
 	local selected_id = 1
-	local i = 1
 
 	-- sound list
 	local sound_list = "textlist[0,1;4,6;sounds;"
 
-	for key, sound in pairs(soundblock.sounds) do
-		if selected_sound_key == key then
+	for i, sounddef in ipairs(soundblock.sounds) do
+		if selected_sound_key == sounddef.key then
 			selected_id = i
 		end
 
-		i = i + 1
-		sound_list = sound_list .. minetest.formspec_escape(sound.name) .. ","
+		sound_list = sound_list .. minetest.formspec_escape(sounddef.name) .. ","
 	end
 	sound_list = sound_list:sub(1, #sound_list-1)
 	sound_list = sound_list .. ";" .. selected_id .. "]";
@@ -89,8 +87,9 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	end
 
 	local timer = minetest.get_node_timer(pos)
+	local state = meta:get_string("state")
+
 	if fields.toggle_state then
-		local state = meta:get_string("state")
 		if state == "on" then
 			state = "mesecons"
 			timer:stop()
@@ -101,7 +100,6 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 
 		else -- off
 			state = "on"
-			timer:start(0)
 
 		end
 
@@ -117,22 +115,13 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	end
 
 	if fields.sounds then
+		minetest.chat_send_all("XXX:" .. fields.sounds)
 		parts = fields.sounds:split(":")
 		if parts[1] == "CHG" then
 			local selected_id = tonumber(parts[2])
-			local i = 1
-			local selected_sound_key
+			local sounddef = soundblock.sounds[selected_id]
 
-			for key in pairs(soundblock.sounds) do
-				if selected_id == i then
-					selected_sound_key = key
-				end
-
-				i = i + 1
-			end
-
-			meta:set_string("selected_sound_key", selected_sound_key)
-			local sounddef = soundblock.sounds[selected_sound_key]
+			meta:set_string("selected_sound_key", sounddef.key)
 			if sounddef and sounddef.length then
 				meta:set_int("interval_min", sounddef.length)
 				meta:set_int("interval_max", sounddef.length)
@@ -141,4 +130,9 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 		end
 	end
 
+	if state == "on" then
+		timer:start(0)
+	end
+
+
 end)

soundblock.lua

@@ -1,9 +1,27 @@
 
+local played_sound_cache = {}
+
+local stop_sound = function(pos)
+	local hash = minetest.hash_node_position(pos)
+	if played_sound_cache[hash] then
+		minetest.sound_stop(played_sound_cache[hash])
+		played_sound_cache[hash] = nil
+	end
+end
+
 local execute = function(pos)
 	local meta = minetest.get_meta(pos)
 
+	stop_sound(pos)
+
 	local selected_sound_key = meta:get_string("selected_sound_key")
-	local def = soundblock.sounds[selected_sound_key]
+	local def
+
+	for _, sounddef in ipairs(soundblock.sounds) do
+		if sounddef.key == selected_sound_key then
+			def = sounddef
+		end
+	end
 
 	if def == nil then
 		return
@@ -28,12 +46,15 @@ local execute = function(pos)
 		})
 	end
 
-	minetest.sound_play(filename, {
+	local handle = minetest.sound_play(filename, {
 		pos = play_pos,
 		gain = gain,
 		max_hear_distance = hear_distance
 	})
 
+	local hash = minetest.hash_node_position(pos)
+	played_sound_cache[hash] = handle
+
 end
 
 minetest.register_node("soundblock:block", {
@@ -67,6 +88,7 @@ minetest.register_node("soundblock:block", {
 		local state = meta:get_string("state")
 
 		if state ~= "on" then
+			stop_sound(pos)
 			return
 		end
 
@@ -85,7 +107,10 @@ minetest.register_node("soundblock:block", {
 			effector = {
 	    action_on = function (pos)
 				execute(pos)
-	    end
+	    end,
+			action_off = function(pos)
+				stop_sound(pos)
+			end
 	  }
 	},