feat: add examples of PlayerJoinEvent and PlayerQuitEvent

Author: wu-vincent

src/endstone_example/example_listener.py

@@ -1,9 +1,24 @@
 from endstone import ColorFormat
-from endstone.event import ServerListPingEvent, event_handler, EventPriority
+from endstone.event import event_handler, EventPriority, PlayerJoinEvent, PlayerQuitEvent, ServerListPingEvent
+from endstone.plugin import Plugin
 
 
 class ExampleListener:
+
+    def __init__(self, plugin: Plugin):
+        self._plugin = plugin
+
     @event_handler(priority=EventPriority.HIGHEST)
     def on_server_list_ping(self, event: ServerListPingEvent):
         event.motd = ColorFormat.BOLD + ColorFormat.AQUA + "Example MOTD"
         event.level_name = f"Your IP is {ColorFormat.YELLOW}{event.remote_host}:{event.remote_port}{ColorFormat.RESET}"
+
+    @event_handler
+    def on_player_join(self, event: PlayerJoinEvent):
+        player = event.player
+        self._plugin.logger.info(ColorFormat.YELLOW + f"{player.name} ({player.unique_id}) joins the game.")
+
+    @event_handler
+    def on_player_quit(self, event: PlayerQuitEvent):
+        player = event.player
+        self._plugin.logger.info(ColorFormat.YELLOW + f"{player.name} ({player.unique_id}) leaves the game.")

src/endstone_example/example_plugin.py

@@ -57,8 +57,8 @@ def on_enable(self) -> None:
         self.get_command("python").executor = PythonCommandExecutor()
 
         self.register_events(self)  # register event listeners defined directly in Plugin class
-        self.listener = ExampleListener()
-        self.register_events(self.listener)  # you can also register event listeners in a separate class
+        self._listener = ExampleListener(self)
+        self.register_events(self._listener)  # you can also register event listeners in a separate class
 
     def on_disable(self) -> None:
         self.logger.info("on_disable is called!")