Show teammate nametags (If per-player entities are supported)

mods/ctf/ctf_modebase/features.lua

@@ -255,6 +255,36 @@ local function can_punchplayer(player, hitter)
 	return true
 end
 
+local function update_playertag(player, t, nametag, team_nametag)
+	local inverse = {}
+	local allowed_players = table.copy(ctf_teams.online_players[t].players)
+	allowed_players[player:get_player_name()] = nil
+
+	for k, v in ipairs(minetest.get_connected_players()) do
+		local n = v:get_player_name()
+		if not allowed_players[n] then
+			inverse[n] = true
+		end
+	end
+
+	team_nametag.object:set_observers(allowed_players)
+	team_nametag.object:set_properties({nametag_color = ctf_teams.team[t].color})
+	nametag.object:set_observers(inverse)
+end
+
+local function update_playertags()
+	for _, p in pairs(minetest.get_connected_players()) do
+		local t = ctf_teams.get(p)
+		local playertag = playertag.get(p)
+		local team_nametag = playertag.nametag_entity
+		local nametag = playertag.entity
+
+		if t and nametag and team_nametag then
+			update_playertag(p, t, nametag, team_nametag)
+		end
+	end
+end
+
 local item_levels = {
 	"wood",
 	"stone",
@@ -486,6 +516,11 @@ return {
 		ctf_modebase.flag_huds.untrack_capturer(pname)
 
 		playertag.set(player, playertag.TYPE_ENTITY)
+
+		if player.set_observers then
+			update_playertags()
+		end
+
 		drop_flag(pteam)
 	end,
 	on_flag_capture = function(player, teamnames)
@@ -494,6 +529,11 @@ return {
 		local tcolor = ctf_teams.team[pteam].color
 
 		playertag.set(player, playertag.TYPE_ENTITY)
+
+		if player.set_observers then
+			update_playertags()
+		end
+
 		celebrate_team(pteam)
 
 		local text = " has captured the flag"
@@ -581,6 +621,10 @@ return {
 
 		playertag.set(player, playertag.TYPE_ENTITY)
 
+		if player.set_observers then
+			update_playertags()
+		end
+
 		tp_player_near_flag(player)
 	end,
 	on_leaveplayer = function(player)

mods/ctf/ctf_modebase/mod.conf

@@ -1,2 +1,2 @@
 name = ctf_modebase
-depends = ctf_api, ctf_core, ctf_teams, ctf_gui, ctf_map, ctf_healing, crafting, mhud, default, binoculars, ctf_player, player_api
+depends = ctf_api, ctf_core, ctf_teams, ctf_gui, ctf_map, ctf_healing, crafting, mhud, default, binoculars, ctf_player, player_api, playertag

mods/other/playertag/init.lua

@@ -9,13 +9,20 @@ playertag = {
 	TYPE_ENTITY  = TYPE_ENTITY,
 }
 
-local function add_entity_tag(player)
+local function add_entity_tag(player, old_observers)
 	-- Hide fixed nametag
 	player:set_nametag_attributes({
 		color = {a = 0, r = 0, g = 0, b = 0}
 	})
 
 	local ent = minetest.add_entity(player:get_pos(), "playertag:tag")
+	local ent2 = false
+
+	if ent.set_observers then
+		ent2 = minetest.add_entity(player:get_pos(), "playertag:tag")
+		ent2:set_observers(old_observers or {})
+		ent2:set_properties({nametag = player:get_player_name()})
+	end
 
 	-- Build name from font texture
 	local texture = "npcf_tag_bg.png"
@@ -37,38 +44,65 @@ local function add_entity_tag(player)
 	-- Attach to player
 	ent:set_attach(player, "", ATTACH_POSITION, {x=0, y=0, z=0})
 
+	if ent2 then
+		ent2:set_attach(player, "", ATTACH_POSITION, {x=0, y=0, z=0})
+	end
+
 	-- Store
-	players[player:get_player_name()].entity = ent
+	players[player:get_player_name()].entity = ent:get_luaentity()
+	players[player:get_player_name()].nametag_entity = ent2 and ent2:get_luaentity()
 end
 
 local function remove_entity_tag(player)
 	local tag = players[player:get_player_name()]
 	if tag and tag.entity then
-		tag.entity:remove()
+		tag.entity.object:remove()
+
+		if tag.nametag_entity then
+			tag.nametag_entity.object:remove()
+		end
 	end
 end
 
 local function update(player, settings)
+	local pname = player:get_player_name()
+	local old_observers = {}
+
+	if player.get_observers and players[pname] and players[pname].nametag_entity then
+		old_observers = players[pname].nametag_entity.object:get_observers()
+	end
+
+	if settings.nametag_entity_observers then
+		old_observers = table.copy(settings.nametag_entity_observers)
+		settings.nametag_entity_observers = nil
+	end
+
 	remove_entity_tag(player)
-	players[player:get_player_name()] = settings
+	players[pname] = settings
 
 	if settings.type == TYPE_BUILTIN then
 		player:set_nametag_attributes({
 			color = settings.color or {a=255, r=255, g=255, b=255},
 			bgcolor = {a=0, r=0, g=0, b=0},
 		})
 	elseif settings.type == TYPE_ENTITY then
-		add_entity_tag(player)
+		add_entity_tag(player, old_observers)
 	end
 end
 
-function playertag.set(player, type, color)
+function playertag.set(player, type, color, extra)
 	local oldset = players[player:get_player_name()]
 	if not oldset then return end
 
 	if oldset.type ~= type or oldset.color ~= color then
-		update(player, {type = type, color = color})
+		extra = extra or {}
+		extra.type = type
+		extra.color = color
+
+		update(player, extra)
 	end
+
+	return players[player:get_player_name()]
 end
 
 function playertag.get(player)
@@ -83,6 +117,7 @@ minetest.register_entity("playertag:tag", {
 	visual = "sprite",
 	visual_size = {x=2.16, y=0.18, z=2.16}, --{x=1.44, y=0.12, z=1.44},
 	textures = {"blank.png"},
+	collisionbox = { 0, -0.3, 0, 0, -0.3, 0 },
 	physical = false,
 	makes_footstep_sound = false,
 	backface_culling = false,