add a chat window

src/scripts/game_world.gd

@@ -36,6 +36,9 @@ func _ready():
 		network_manager.player_connected.connect(_on_player_connected)
 		network_manager.player_disconnected.connect(_on_player_disconnected)
 	
+	# Create chat UI
+	_create_chat_ui()
+	
 	# Generate dungeon on host
 	if multiplayer.is_server() or not multiplayer.has_multiplayer_peer():
 		print("GameWorld: _ready() - Will generate dungeon (is_server: ", multiplayer.is_server(), ", has_peer: ", multiplayer.has_multiplayer_peer(), ")")
@@ -59,6 +62,10 @@ func _spawn_all_players():
 func _on_player_connected(peer_id: int, player_info: Dictionary):
 	print("GameWorld: Player connected signal received for peer ", peer_id, " with info: ", player_info)
 	
+	# Send join message to chat (only on server to avoid duplicates)
+	if multiplayer.is_server():
+		_send_player_join_message(peer_id, player_info)
+	
 	# Reset ready status for this peer (they need to notify again after spawning)
 	if multiplayer.is_server():
 		clients_ready[peer_id] = false
@@ -139,8 +146,13 @@ func _sync_existing_enemies_to_client(client_peer_id: int):
 			_sync_enemy_spawn.rpc_id(client_peer_id, spawner.name, pos, scene_index, humanoid_type)
 			print("GameWorld: Sent enemy spawn sync to client ", client_peer_id, ": spawner=", spawner.name, " pos=", pos, " scene_index=", scene_index, " humanoid_type=", humanoid_type)
 
-func _on_player_disconnected(peer_id: int):
+func _on_player_disconnected(peer_id: int, player_info: Dictionary):
 	print("GameWorld: Player disconnected - ", peer_id)
+	
+	# Send disconnect message to chat (only on server to avoid duplicates)
+	if multiplayer.is_server():
+		_send_player_disconnect_message(peer_id, player_info)
+	
 	player_manager.despawn_players_for_peer(peer_id)
 
 @rpc("authority", "reliable")
@@ -2030,6 +2042,60 @@ func _initialize_hud():
 	else:
 		print("GameWorld: HUD not found or not ready - this is OK if HUD scene is missing")
 
+func _create_chat_ui():
+	# Load chat UI scene
+	var chat_ui_scene = load("res://scenes/chat_ui.tscn")
+	if not chat_ui_scene:
+		push_error("GameWorld: Could not load chat_ui.tscn scene!")
+		return
+	
+	var chat_ui = chat_ui_scene.instantiate()
+	if chat_ui:
+		add_child(chat_ui)
+		print("GameWorld: Chat UI scene instantiated and added to scene tree")
+	else:
+		push_error("GameWorld: Failed to instantiate chat_ui.tscn!")
+
+func _send_player_join_message(peer_id: int, player_info: Dictionary):
+	# Send a chat message when a player joins
+	# Only send from server to avoid duplicate messages
+	if not multiplayer.is_server():
+		return
+	
+	# Get player name (use first player name from the player_info)
+	var player_names = player_info.get("player_names", [])
+	var player_name = ""
+	if player_names.size() > 0:
+		player_name = player_names[0]
+	else:
+		player_name = "Player%d" % peer_id
+	
+	# Get chat UI
+	var chat_ui = get_node_or_null("ChatUI")
+	if chat_ui and chat_ui.has_method("send_system_message"):
+		var message = "%s joined the game" % player_name
+		chat_ui.send_system_message(message)
+
+func _send_player_disconnect_message(peer_id: int, player_info: Dictionary):
+	# Send a chat message when a player disconnects
+	# Only send from server to avoid duplicate messages
+	if not multiplayer.is_server():
+		return
+	
+	# Get player name from player_info
+	var player_name = ""
+	var player_names = player_info.get("player_names", [])
+	if player_names.size() > 0:
+		player_name = player_names[0]
+	else:
+		player_name = "Player%d" % peer_id
+	
+	# Get chat UI
+	var chat_ui = get_node_or_null("ChatUI")
+	if chat_ui and chat_ui.has_method("send_system_message"):
+		var message = "%s left/disconnected" % player_name
+		chat_ui.send_system_message(message)
+
 func _create_level_complete_ui_programmatically() -> Node:
 	# Create level complete UI programmatically
 	var canvas_layer = CanvasLayer.new()