feat(多人游戏): 实现基础多人游戏功能

- 添加玩家位置同步功能
- 实现服务器和客户端连接管理
- 添加玩家名称输入和生成逻辑
- 完善多人游戏UI界面
- 移除单机模式下的预设玩家角色

scripts/Contents/Panels/Starter.gd

@@ -3,6 +3,7 @@ extends FullscreenPanelBase
 
 @onready var diffEdit: HSlider = $"%diffEdit"
 @onready var startBtn: Button = $"%startBtn"
+@onready var startMultiplayerBtn: Button = $"%startMultiplayerBtn"
 @onready var levelShow: Label = $"%levelShow"
 @onready var hostInput: LineEdit = $"%hostInput"
 @onready var portInput: LineEdit = $"%portInput"
@@ -11,15 +12,30 @@ extends FullscreenPanelBase
 @onready var maxPlayerInput: LineEdit = $"%maxPlayerInput"
 @onready var connectionState: Label = $"%connectionState"
 @onready var disconnectBtn: Button = $"%disconnectBtn"
+@onready var playerNameInput: LineEdit = $"%playerNameInput"
+@onready var serverConfig: VBoxContainer = $"%serverConfig"
 
 func _ready():
 	diffEdit.min_value = GameRule.difficultyRange.x
 	diffEdit.max_value = GameRule.difficultyRange.y
+	multiplayer.connection_failed.connect(
+		func():
+			setState(MultiplayerState.ConnectionState.DISCONNECTED)
+	)
+	multiplayer.peer_connected.connect(
+		func():
+			setState(MultiplayerState.ConnectionState.CONNECTED_CLIENT)
+	)
 	startBtn.pressed.connect(
 		func():
+			EntityBase.generatePlayer(playerNameInput.text)
 			Wave.next()
 			UIState.closeCurrentPanel()
 	)
+	startMultiplayerBtn.pressed.connect(
+		func():
+			pass
+	)
 	maxPlayerInput.text_changed.connect(
 		func(text):
 			MultiplayerState.maxPlayer = int(text)
@@ -27,6 +43,16 @@ func _ready():
 	launchBtn.pressed.connect(
 		func():
 			MultiplayerState.launchServer(int(portInput.text))
+			setState(MultiplayerState.ConnectionState.CONNECTED_HOST)
+	)
+	connectBtn.pressed.connect(
+		func():
+			multiplayer.multiplayer_peer = MultiplayerState.connectClient(hostInput.text, int(portInput.text))
+			setState(MultiplayerState.ConnectionState.CONNECTING)
+	)
+	disconnectBtn.pressed.connect(
+		func():
+			setState(MultiplayerState.ConnectionState.DISCONNECTED)
 	)
 	setState(MultiplayerState.ConnectionState.DISCONNECTED)
 func _physics_process(_delta):
@@ -38,3 +64,5 @@ func setState(state: MultiplayerState.ConnectionState):
 	connectionState.text = "状态：%s" % MultiplayerState.stateTextMap[state]
 	connectionState.modulate = MultiplayerState.stateColorMap[state]
 	disconnectBtn.disabled = not MultiplayerState.isConnected()
+	startMultiplayerBtn.disabled = not MultiplayerState.isConnected()
+	serverConfig.visible = MultiplayerState.state == MultiplayerState.ConnectionState.CONNECTED_HOST