From 8e6326c0db4ceec909b7b949418fbf909d23af29 Mon Sep 17 00:00:00 2001
From: raven <citrons@mondecitronne.com>
Date: Sun, 22 Mar 2026 16:32:00 -0500
Subject: use ExtPlayerList

---
 server/server.go | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 51 insertions(+), 4 deletions(-)

(limited to 'server/server.go')

diff --git a/server/server.go b/server/server.go
index 29aa66f..213bd64 100644
--- a/server/server.go
+++ b/server/server.go
@@ -21,11 +21,13 @@ var supportedExtensions = []string {
 	"LongerMessages",
 	"FullCP437",
 	"CustomBlocks",
+	"ExtPlayerList.2",
 }
 var requiredExtensions = []string {
 	"ExtEntityPositions",
 	"EnvMapAspect.2",
 	"CustomBlocks",
+	"ExtPlayerList.2",
 }
 
 type ServerInfo struct {
@@ -40,11 +42,14 @@ type Server struct {
 	info ServerInfo
 	clients map[*client]bool
 	players map[string]*player
+	listIds map[listId]string
+	playerList map[string]listEntry
 	levels map[levelId]*level
 	listener net.Listener
 	stopping bool
 	stopped chan struct{}
 }
+
 type worldState struct {
 	LastId levelId
 	SpawnLevel levelId
@@ -52,11 +57,21 @@ type worldState struct {
 	Banned map[string]string
 }
 
+type listId int16
+type listEntry struct {
+	id listId
+	playerName string
+	listName string
+	player *player
+}
+
 func NewServer(info ServerInfo) *Server {
 	s := &Server {
 		info: info,
 		clients: make(map[*client]bool),
 		players: make(map[string]*player),
+		listIds: make(map[listId]string),
+		playerList: make(map[string]listEntry),
 		levels: make(map[levelId]*level),
 		stopped: make(chan struct{}),
 	}
@@ -202,10 +217,13 @@ func (s *Server) OnDisconnect(cl *client) {
 }
 
 func (s *Server) OnLeave(pl *player, username string) {
-	s.Broadcast(nil, fmt.Sprintf("&e%s has left", username))
-	if s.players[username] == pl {
-		delete(s.players, username)
-	}
+	s.Act(pl, func() {
+		s.Broadcast(nil, fmt.Sprintf("&e%s has left", username))
+		if s.players[username] == pl {
+			delete(s.players, username)
+			s.removeListEntry(username)
+		}
+	})
 }
 
 func (s *Server) OnPlayerMessage(from *player, name string, message string) {
@@ -248,6 +266,9 @@ func (s *Server) newPlayer(
 		cl *client, name string, ext map[string]bool) *player {
 	pl := newPlayer(s, cl, name, ext)
 	s.players[name] = pl
+	for _, entry := range s.playerList {
+		pl.OnAddListEntry(s, entry)
+	}
 	return pl
 }
 
@@ -320,9 +341,35 @@ func (s *Server) NewPlayer(
 			s.newPlayer(cl, name, ext)
 			s.GetPlayer(from, name, reply)
 		}
+		s.addListEntry(name)
 	})
 }
 
+func (s *Server) addListEntry(name string) {
+	var id listId
+	for s.listIds[id] != "" {
+		id++
+	}
+	s.listIds[id] = name
+	s.playerList[name] = listEntry {
+		id: id,
+		playerName: name,
+		listName: name,
+	}
+	for _, player := range s.players {
+		player.OnAddListEntry(s, s.playerList[name])
+	}
+}
+
+func (s *Server) removeListEntry(name string) {
+	id := s.playerList[name].id
+	delete(s.playerList, name)
+	delete(s.listIds, id)
+	for _, player := range s.players {
+		player.OnRemoveListEntry(s, id)
+	}
+}
+
 func (s *Server) getLevel(lvl levelId) *level {
 	if s.levels[lvl] == nil {
 		s.levels[lvl] = loadLevel(s, lvl, lvl == s.SpawnLevel)
-- 
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