Improved reconnect flow

client/world/PlayerManager.gd

@@ -7,12 +7,18 @@ func _ready():
 	Global.players = self
 
 func add(player: Player):
+	if has(player.id):
+		return
+	
 	add_child(player)
 	players[player.id] = player
 
 func get_player(id: String) -> Player:
 	return players[id] as Player
 
+func has(id: String) -> bool:
+	return players.has(id)
+
 func remove(id: String):
 	if !players.has(id):
 		return