added yl_speak_up.update_nametag and yl_speak_up.set_muted for colored nametags depending on muted state

functions.lua

@@ -1916,7 +1916,7 @@ minetest.register_on_player_receive_fields(
                     
                     local i_text = dialog.n_npc .. "\n" .. dialog.n_description .. "\n" .. yl_speak_up.infotext
                     obj:set_properties({infotext = i_text})
-                    obj:set_nametag_attributes({color="#00ff00", text=dialog.n_npc})
+                    yl_speak_up.update_nametag(ent)
                 end
             end
 
@@ -2641,7 +2641,7 @@ minetest.register_on_player_receive_fields(
 				ent.owner = dialog.npc_owner
 				local i_text = dialog.n_npc .. "\n" .. dialog.n_description .. "\n" .. yl_speak_up.infotext
 				obj:set_properties({infotext = i_text})
-				obj:set_nametag_attributes({color="#00ff00", text=dialog.n_npc})
+                                yl_speak_up.update_nametag(ent)
 			end
 		end
 
@@ -3063,10 +3063,7 @@ function yl_speak_up.after_activate(self, staticdata, def, dtime)
         self.object:set_properties({infotext = i_text})
     end
 
-    if self.yl_speak_up.npc_name then
+    yl_speak_up.update_nametag(self)
-        self.object:set_nametag_attributes({color="#00ff00", text=self.yl_speak_up.npc_name})
-    end
-
 end
 
 function yl_speak_up.talk(self, clicker)
@@ -3398,3 +3395,54 @@ function yl_speak_up.fashion(player, obj)
 
     minetest.show_formspec(pname, "yl_speak_up:fashion", get_fs_fashion(pname))
 end
+
+
+yl_speak_up.update_nametag = function(self)
+    if self.yl_speak_up.npc_name then
+	-- the nametag is normal (green)
+        if(self.yl_speak_up.talk) then
+            self.object:set_nametag_attributes({color="#00ff00", text=self.yl_speak_up.npc_name})
+	-- the nametag has the addition "[muted]" and is magenta when muted
+        else
+	    self.object:set_nametag_attributes({color="#ff00ff", text=self.yl_speak_up.npc_name.." [muted]"})
+        end
+    end
+end
+
+-- mute the npc; either via the appropriate staff or via talking to him
+yl_speak_up.set_muted = function(p_name, obj, set_muted)
+	if(not(obj)) then
+		return
+	end
+	local luaentity = obj:get_luaentity()
+	if(not(luaentity)) then
+		return
+	end
+	local npc = luaentity.yl_speak_up.id
+	npc_name = luaentity.yl_speak_up.npc_name
+	-- fallback
+	if(not(npc_name)) then
+		npc_name = npc
+	end
+	if(set_muted and luaentity.yl_speak_up.talk) then
+		-- the npc is willing to talk
+		luaentity.yl_speak_up.talk = false
+		yl_speak_up.update_nametag(luaentity)
+
+		minetest.chat_send_player(p_name,"NPC with ID "..npc.." will shut up at pos "..
+			minetest.pos_to_string(obj:get_pos(),0).." on command of "..p_name)
+		minetest.log("action","[MOD] yl_speak_up: NPC with ID n_"..npc..
+			" will shut up at pos "..minetest.pos_to_string(obj:get_pos(),0)..
+			" on command of "..p_name)
+	elseif(not(set_muted) and not(luaentity.yl_speak_up.talk)) then
+		-- mute the npc
+		luaentity.yl_speak_up.talk = true
+		yl_speak_up.update_nametag(luaentity)
+
+		minetest.chat_send_player(p_name,"NPC with ID "..npc.." will resume speech at pos "..
+			minetest.pos_to_string(obj:get_pos(),0).." on command of "..p_name)
+		minetest.log("action","[MOD] yl_speak_up: NPC with ID n_"..npc..
+			" will resume speech at pos "..minetest.pos_to_string(obj:get_pos(),0)..
+			" on command of "..p_name)
+	end
+end

tools.lua

@@ -53,15 +53,8 @@ minetest.register_tool("yl_speak_up:staff_of_shut_up", {
 		end
 
 		local p_name = user:get_player_name()
-		local luaentity = obj:get_luaentity()
+		yl_speak_up.set_muted(p_name, obj, true)
-		local npc = luaentity.yl_speak_up.id
-		luaentity.yl_speak_up.talk = false
 
-		minetest.chat_send_player(p_name,"NPC with ID "..npc.." will shut up at pos "..
-			minetest.pos_to_string(obj:get_pos(),0).." on command of "..p_name)
-		minetest.log("action","[MOD] yl_speak_up: NPC with ID n_"..npc..
-			" will shut up at pos "..minetest.pos_to_string(obj:get_pos(),0)..
-			" on command of "..p_name)
 		return itemstack
 	end
 })
@@ -77,15 +70,8 @@ minetest.register_tool("yl_speak_up:staff_of_dawai_dawai", {
 		end
 
 		local p_name = user:get_player_name()
-		local luaentity = obj:get_luaentity()
+		yl_speak_up.set_muted(p_name, obj, false)
-		local npc = luaentity.yl_speak_up.id
-		luaentity.yl_speak_up.talk = true
 
-		minetest.chat_send_player(p_name,"NPC with ID "..npc.." will resume speech at pos "..
-			minetest.pos_to_string(obj:get_pos(),0).." on command of "..p_name)
-		minetest.log("action","[MOD] yl_speak_up: NPC with ID n_"..npc..
-			" will resume speech at pos "..minetest.pos_to_string(obj:get_pos(),0)..
-			" on command of "..p_name)
 		return itemstack
 	end
 })