船新登陆界面 (#214)

* 修一些小bug
* 局域网检测
* 检测服务器数据
* 船新的登陆界面

Fk/Logic.js

@@ -17,6 +17,29 @@ function createClientPages() {
 var callbacks = {};
 let sheduled_download = "";
 
+callbacks["ServerDetected"] = (j) => {
+  const serverDialog = mainStack.currentItem.serverDialog;
+  if (!serverDialog) {
+    return;
+  }
+  const item = serverDialog.item;
+  if (item) {
+    toast.show(qsTr("Detected Server %1").arg(j.slice(7)), 10000);
+  }
+}
+
+callbacks["GetServerDetail"] = (j) => {
+  const [addr, ver, icon, desc, capacity, count] = JSON.parse(j);
+  const serverDialog = mainStack.currentItem.serverDialog;
+  if (!serverDialog) {
+    return;
+  }
+  const item = serverDialog.item;
+  if (item) {
+    item.updateServerDetail(addr, [ver, icon, desc, capacity, count]);
+  }
+}
+
 callbacks["NetworkDelayTest"] = (jsonData) => {
   // jsonData: RSA pub key
   let cipherText;

Fk/Pages/Init.qml

@@ -6,6 +6,7 @@ import QtQuick.Controls
 
 Item {
   id: root
+  property alias serverDialog: serverDialogLoader
 
   Item {
     width: 960 * 0.8
@@ -54,62 +55,17 @@ Item {
           Layout.alignment: Qt.AlignHCenter
         }
 
-        GridLayout {
+        Button {
-          columns: 2
-          rowSpacing: 20
-
-          Text {
-            text: qsTr("Server Addr")
-          }
-          ComboBox {
-            id: server_addr
           Layout.fillWidth: true
-            model: []
+          text: qsTr("Console start")
-            editable: true
+          onClicked: {
-
+            config.serverAddr = "127.0.0.1";
-            onEditTextChanged: {
+            const serverCfg = config.savedPassword["127.0.0.1"] ?? {};
-              if (model.indexOf(editText) === -1) {
+            config.screenName = serverCfg.username ?? "player";
-                passwordEdit.text = "";
+            config.password = serverCfg.shorten_password ?? "1234";
-              } else {
+            mainWindow.busy = true;
-                const data = config.savedPassword[editText];
+            Backend.startServer(9527);
-                screenNameEdit.text = data.username;
+            Backend.joinServer("127.0.0.1");
-                passwordEdit.text = data.shorten_password;
-              }
-            }
-          }
-
-          Text {
-            text: qsTr("Username")
-          }
-          TextField {
-            id: screenNameEdit
-            maximumLength: 32
-            Layout.fillWidth: true
-            placeholderText: qsTr("Username")
-            text: ""
-            onTextChanged: {
-              passwordEdit.text = "";
-              const data = config.savedPassword[server_addr.editText];
-              if (data) {
-                if (text === data.username) {
-                  passwordEdit.text = data.shorten_password;
-                }
-              }
-            }
-          }
-
-          CheckBox {
-            id: showPasswordCheck
-            text: qsTr("Show Password")
-          }
-          TextField {
-            id: passwordEdit
-            maximumLength: 64
-            Layout.fillWidth: true
-            placeholderText: qsTr("Password")
-            text: ""
-            echoMode: showPasswordCheck.checked ? TextInput.Normal : TextInput.Password
-            passwordCharacter: "*"
           }
         }
 
@@ -117,29 +73,8 @@ Item {
           text: qsTr("Join Server")
           Layout.fillWidth: true
           display: AbstractButton.TextBesideIcon
-          icon.name: "go-next"
-          enabled: passwordEdit.text !== ""
           onClicked: {
-            config.serverAddr = server_addr.editText;
+            serverDialog.show();
-            config.screenName = screenNameEdit.text;
-            config.password = passwordEdit.text;
-            mainWindow.busy = true;
-            Backend.joinServer(server_addr.editText);
-          }
-        }
-
-        RowLayout {
-          Button {
-            Layout.preferredWidth: 180
-            text: qsTr("Console start")
-            enabled: passwordEdit.text !== ""
-            onClicked: {
-              config.serverAddr = "127.0.0.1";
-              config.screenName = screenNameEdit.text;
-              config.password = passwordEdit.text;
-              mainWindow.busy = true;
-              Backend.startServer(9527);
-              Backend.joinServer("127.0.0.1");
           }
         }
 
@@ -150,6 +85,14 @@ Item {
             mainStack.push(packageManage);
           }
         }
+
+        Button {
+          Layout.fillWidth: true
+          text: qsTr("Quit Game")
+          onClicked: {
+            config.saveConf();
+            Qt.quit();
+          }
         }
       }
 
@@ -183,6 +126,63 @@ Item {
     }
   }
 
+  Item {
+    id: serverDialog
+    width: parent.width * 0.8
+    height: parent.height * 0.9
+    anchors.centerIn: parent
+    visible: false
+
+    Rectangle {
+      anchors.fill: parent
+      opacity: 0.9
+      radius: 8
+      color: "snow"
+      border.color: "black"
+    }
+
+    MouseArea {
+      anchors.fill: parent
+    }
+
+    Loader {
+      id: serverDialogLoader
+      anchors.fill: parent
+      source: "JoinServer.qml"
+    }
+
+    PropertyAnimation on opacity {
+      id: showAnim
+      from: 0
+      to: 1
+      duration: 400
+      running: false
+      onStarted: {
+        serverDialogLoader.item.loadConfig();
+      }
+    }
+
+    PropertyAnimation on opacity {
+      id: hideAnim
+      from: 1
+      to: 0
+      duration: 400
+      running: false
+      onFinished: {
+        serverDialog.visible = false;
+      }
+    }
+
+    function show() {
+      visible = true;
+      showAnim.start();
+    }
+
+    function hide() {
+      hideAnim.start();
+    }
+  }
+
   // Temp
   Button {
     text: qsTr("Making Mod")
@@ -202,15 +202,5 @@ Item {
     config.loadConf();
 
     lady.source = config.ladyImg;
-
-    server_addr.model = Object.keys(config.savedPassword);
-    server_addr.onModelChanged();
-    server_addr.currentIndex = server_addr.model.indexOf(config.lastLoginServer);
-
-    const data = config.savedPassword[config.lastLoginServer];
-    if (data) {
-      screenNameEdit.text = data.username;
-      passwordEdit.text = data.shorten_password;
-    }
   }
 }

Fk/Pages/JoinServer.qml

@@ -0,0 +1,384 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+import QtQuick
+import QtQuick.Layouts
+import QtQuick.Controls
+
+Item {
+  id: root
+  anchors.fill: parent
+
+  Timer {
+    id: opTimer
+    interval: 5000
+  }
+
+  Component {
+    id: serverDelegate
+
+    Item {
+      height: 64
+      width: serverList.width - 48
+
+      RowLayout {
+        anchors.fill: parent
+        spacing: 16
+
+        Image {
+          Layout.preferredHeight: 60
+          Layout.preferredWidth: 60
+          fillMode: Image.PreserveAspectFit
+          source: favicon
+        }
+
+        Text {
+          text: serverIP
+        }
+
+        Text {
+          text: description
+        }
+
+        Text {
+          text: online + "/" + capacity
+        }
+      }
+
+      TapHandler {
+        onTapped: {
+          if (serverList.currentIndex === index) {
+            serverList.currentIndex = -1;
+          } else {
+            serverList.currentIndex = index;
+          }
+        }
+      }
+    }
+  }
+
+  ListView {
+    id: serverList
+    height: parent.height - controlPanel.height - 30
+    width: parent.width - 80
+    anchors.horizontalCenter: parent.horizontalCenter
+    anchors.top: parent.top
+    anchors.topMargin: 10
+    contentHeight: serverDelegate.height * count
+    model: ListModel {
+      id: serverModel
+    }
+    delegate: serverDelegate
+    ScrollBar.vertical: ScrollBar {}
+    clip: true
+    highlight: Rectangle {
+      color: "transparent"; radius: 5
+      border.color: "black"; border.width: 2
+    }
+    highlightMoveDuration: 0
+    currentIndex: -1
+  }
+
+  GridLayout {
+    id: controlPanel
+    anchors.top: serverList.bottom
+    anchors.topMargin: 10
+    width: parent.width - 80
+    anchors.horizontalCenter: parent.horizontalCenter
+    height: joinButton.height * 2 + 10
+    columns: 3
+
+    Button {
+      id: joinButton
+      Layout.fillWidth: true
+      enabled: serverList.currentIndex !== -1
+      text: qsTr("Join Server")
+      onClicked: {
+        const item = serverModel.get(serverList.currentIndex);
+        const serverCfg = config.savedPassword[item.serverIP];
+        config.serverAddr = item.serverIP;
+        config.screenName = serverCfg.username;
+        config.password = serverCfg.shorten_password ?? serverCfg.password;
+        mainWindow.busy = true;
+        Backend.joinServer(item.serverIP);
+      }
+    }
+
+    Button {
+      Layout.fillWidth: true
+      text: qsTr("Add New Server")
+      onClicked: {
+        drawerLoader.sourceComponent = newServerComponent;
+        drawer.open();
+      }
+    }
+
+    Button {
+      Layout.fillWidth: true
+      enabled: serverList.currentIndex !== -1
+      text: qsTr("Edit Server")
+      onClicked: {
+        drawerLoader.sourceComponent = editServerComponent;
+        drawer.open();
+      }
+    }
+
+    Button {
+      Layout.fillWidth: true
+      text: qsTr("Refresh List")
+      enabled: !opTimer.running
+      onClicked: {
+        opTimer.start();
+        for (let i = 0; i < serverModel.count; i++) {
+          const item = serverModel.get(i);
+          Backend.getServerInfo(item.serverIP);
+        }
+      }
+    }
+
+    Button {
+      Layout.fillWidth: true
+      text: qsTr("Detect LAN")
+      enabled: !opTimer.running
+      onClicked: {
+        opTimer.start();
+        Backend.detectServer();
+      }
+    }
+
+    Button {
+      Layout.fillWidth: true
+      text: qsTr("Go Back")
+      onClicked: serverDialog.hide();
+    }
+  }
+
+  Component {
+    id: newServerComponent
+    ColumnLayout {
+      signal finished();
+
+      Text {
+        text: qsTr("@NewServer")
+        font.pixelSize: 24
+        font.bold: true
+        Layout.fillWidth: true
+        wrapMode: Text.WordWrap
+      }
+
+      Text {
+        text: qsTr("@NewServerHint")
+        font.pixelSize: 16
+        Layout.fillWidth: true
+        wrapMode: Text.WordWrap
+      }
+
+      TextField {
+        id: serverAddrEdit
+        Layout.fillWidth: true
+        placeholderText: qsTr("Server Addr")
+        text: ""
+      }
+
+      TextField {
+        id: screenNameEdit
+        maximumLength: 32
+        Layout.fillWidth: true
+        placeholderText: qsTr("Username")
+        text: ""
+      }
+
+      TextField {
+        id: passwordEdit
+        maximumLength: 64
+        Layout.fillWidth: true
+        placeholderText: qsTr("Password")
+        text: ""
+        echoMode: showPasswordCheck.checked ? TextInput.Normal : TextInput.Password
+        passwordCharacter: "*"
+      }
+
+      CheckBox {
+        id: showPasswordCheck
+        text: qsTr("Show Password")
+      }
+
+      Button {
+        Layout.fillWidth: true
+        enabled: serverAddrEdit.text !== "" && screenNameEdit.text !== "" && passwordEdit.text !== ""
+        text: "OK"
+        onClicked: {
+          root.addNewServer(serverAddrEdit.text, screenNameEdit.text, passwordEdit.text);
+          finished();
+        }
+      }
+    }
+  }
+
+  Component {
+    id: editServerComponent
+    ColumnLayout {
+      signal finished();
+
+      Text {
+        text: qsTr("@EditServer")
+        font.pixelSize: 24
+        font.bold: true
+        Layout.fillWidth: true
+        wrapMode: Text.WordWrap
+      }
+
+      Text {
+        text: qsTr("@EditServerHint")
+        font.pixelSize: 16
+        Layout.fillWidth: true
+        wrapMode: Text.WordWrap
+      }
+
+      TextField {
+        id: screenNameEdit
+        maximumLength: 32
+        Layout.fillWidth: true
+        placeholderText: qsTr("Username")
+        text: ""
+      }
+
+      TextField {
+        id: passwordEdit
+        maximumLength: 64
+        Layout.fillWidth: true
+        placeholderText: qsTr("Password")
+        text: ""
+        echoMode: showPasswordCheck.checked ? TextInput.Normal : TextInput.Password
+        passwordCharacter: "*"
+      }
+
+      CheckBox {
+        id: showPasswordCheck
+        text: qsTr("Show Password")
+      }
+
+      Button {
+        Layout.fillWidth: true
+        enabled: screenNameEdit.text !== "" && passwordEdit.text !== ""
+        text: "OK"
+        onClicked: {
+          root.editCurrentServer(screenNameEdit.text, passwordEdit.text);
+          finished();
+        }
+      }
+
+      Button {
+        Layout.fillWidth: true
+        text: qsTr("Delete Server")
+        onClicked: {
+          root.deleteCurrentServer();
+          finished();
+        }
+      }
+    }
+  }
+
+  Drawer {
+    id: drawer
+    width: parent.width * 0.3 / mainWindow.scale
+    height: parent.height / mainWindow.scale
+    dim: false
+    clip: true
+    dragMargin: 0
+    scale: mainWindow.scale
+    transformOrigin: Item.TopLeft
+
+    Loader {
+      id: drawerLoader
+      anchors.fill: parent
+      anchors.margins: 16
+      onSourceChanged: {
+        if (item === null)
+          return;
+        item.finished.connect(() => {
+          sourceComponent = undefined;
+          drawer.close();
+        });
+      }
+      onSourceComponentChanged: sourceChanged();
+    }
+  }
+
+  function addNewServer(addr, name, password) {
+    if (config.savedPassword[addr]) {
+      return;
+    }
+
+    config.savedPassword[addr] = {
+      username: name,
+      password: password,
+    };
+    config.saveConf();
+
+    serverModel.append({
+      serverIP: addr,
+      description: qsTr("Server not up"),
+      online: "-",
+      capacity: "-",
+      favicon: "https://img1.imgtp.com/2023/07/01/DGUdj8eu.png",
+    });
+    Backend.getServerInfo(addr);
+  }
+
+  function editCurrentServer(name, password) {
+    const addr = serverModel.get(serverList.currentIndex).serverIP;
+    if (!config.savedPassword[addr]) {
+      return;
+    }
+
+    config.savedPassword[addr] = {
+      username: name,
+      password: password,
+      shorten_password: undefined,
+      key: undefined,
+    };
+    config.saveConf();
+  }
+
+  function deleteCurrentServer() {
+    const addr = serverModel.get(serverList.currentIndex).serverIP;
+    if (!config.savedPassword[addr]) {
+      return;
+    }
+
+    config.savedPassword[addr] = undefined;
+    config.saveConf();
+
+    serverModel.remove(serverList.currentIndex, 1);
+    serverList.currentIndex = -1;
+  }
+
+  function updateServerDetail(addr, data) {
+    const [ver, icon, desc, capacity, count] = data;
+    for (let i = 0; i < serverModel.count; i++) {
+      const item = serverModel.get(i);
+      if (addr.endsWith(item.serverIP)) { // endsWith是为了应付IPv6格式的ip
+        item.description = FkVersion === ver ? desc : "Ver " + ver;
+        item.favicon = icon;
+        item.online = count.toString();
+        item.capacity = capacity.toString();
+      }
+    }
+  }
+
+  function loadConfig() {
+    if (serverModel.count > 0) {
+      return;
+    }
+    for (let key in config.savedPassword) {
+      serverModel.append({
+        serverIP: key,
+        description: qsTr("Server not up"),
+        online: "-",
+        capacity: "-",
+        favicon: "https://img1.imgtp.com/2023/07/01/DGUdj8eu.png",
+      });
+      Backend.getServerInfo(key);
+    }
+  }
+}

Fk/Pages/Room.qml

@@ -298,9 +298,13 @@ Item {
     width: childrenRect.width
     height: childrenRect.height
     anchors.bottom: parent.bottom
+    anchors.bottomMargin: 8
+    anchors.left: parent.left
+    anchors.leftMargin: 8
     ColumnLayout {
       MetroButton {
         text: Backend.translate("Revert Selection")
+        textFont.pixelSize: 28
         enabled: dashboard.pending_skill !== ""
         onClicked: dashboard.revertSelection();
       }
@@ -309,9 +313,11 @@ Item {
       // }
       MetroButton {
         text: Backend.translate("Sort Cards")
+        textFont.pixelSize: 28
       }
       MetroButton {
         text: Backend.translate("Chat")
+        textFont.pixelSize: 28
         onClicked: roomDrawer.open();
       }
     }

lang/zh_CN.ts

@@ -115,26 +115,22 @@
     <source>FreeKill</source>
     <translation>新月杀</translation>
   </message>
-  <message>
-    <source>Username</source>
-    <translation>用户名</translation>
-  </message>
-  <message>
-    <source>Show Password</source>
-    <translation>显示密码</translation>
-  </message>
   <message>
     <source>Join Server</source>
     <translation>加入服务器</translation>
   </message>
   <message>
     <source>Console start</source>
-    <translation>单机启动</translation>
+    <translation>单机启动（不推荐）</translation>
   </message>
   <message>
     <source>PackageManage</source>
     <translation>管理拓展包</translation>
   </message>
+  <message>
+    <source>Quit Game</source>
+    <translation>退出游戏</translation>
+  </message>
   <message>
     <source>Making Mod</source>
     <translation>制作Mod</translation>
@@ -143,10 +139,6 @@
     <source>Welcome back!</source>
     <translation>欢迎回来！</translation>
   </message>
-  <message>
-    <source>Server Addr</source>
-    <translation>服务器IP</translation>
-  </message>
   <message>
     <source>FAQ</source>
     <translation>常见疑问</translation>
@@ -169,6 +161,77 @@
   </message>
 </context>
 
+<context>
+  <name>JoinServer</name>
+  <message>
+    <source>Join Server</source>
+    <translation>加入服务器</translation>
+  </message>
+  <message>
+    <source>Add New Server</source>
+    <translation>添加服务器</translation>
+  </message>
+  <message>
+    <source>Edit Server</source>
+    <translation>编辑服务器</translation>
+  </message>
+  <message>
+    <source>Refresh List</source>
+    <translation>刷新列表</translation>
+  </message>
+  <message>
+    <source>Detect LAN</source>
+    <translation>探测局域网</translation>
+  </message>
+  <message>
+    <source>Go Back</source>
+    <translation>返回</translation>
+  </message>
+
+  <message>
+    <source>Server not up</source>
+    <translation>服务器似乎没有启动。</translation>
+  </message>
+
+  <message>
+    <source>@NewServer</source>
+    <translation>添加新服务器</translation>
+  </message>
+  <message>
+    <source>@NewServerHint</source>
+    <translation>请输入服务器的IP或者域名，并输入你在这个服务器所使用的用户名与密码。如果你之前并未游玩过该服务器，则服务器会为你自动注册一个账号。以后登陆到该服务器都需要同样的用户名和密码，请不要忘记密码！</translation>
+  </message>
+  <message>
+    <source>Server Addr</source>
+    <translation>服务器IP</translation>
+  </message>
+  <message>
+    <source>Username</source>
+    <translation>用户名</translation>
+  </message>
+  <message>
+    <source>Password</source>
+    <translation>密码</translation>
+  </message>
+  <message>
+    <source>Show Password</source>
+    <translation>显示密码</translation>
+  </message>
+  <message>
+    <source>@EditServer</source>
+    <translation>编辑服务器</translation>
+  </message>
+  <message>
+    <source>@EditServerHint</source>
+    <translation>你可以修改在该服务器使用的用户名与密码。
+    你不能直接修改服务器的IP；如确实需要，请删除此服务器然后新增一个。</translation>
+  </message>
+  <message>
+    <source>Delete Server</source>
+    <translation>删除服务器</translation>
+  </message>
+</context>
+
 <context>
   <name>main</name>
   <message>
@@ -207,6 +270,10 @@
 
 <context>
   <name>Logic</name>
+  <message>
+    <source>Detected Server %1</source>
+    <translation>检测到新月杀服务器 - %1</translation>
+  </message>
   <message>
     <source>MD5 check failed!</source>
     <translation>MD5检测失败！请与服务端保持一致后再登入</translation>

lua/core/player.lua

@@ -418,7 +418,7 @@ end
 --- 通过 二者位次+距离技能之和 与 两者间固定距离 进行对比，更大的为实际距离。
 ---@param other Player @ 其他玩家
 function Player:distanceTo(other)
-  -- assert(other:isInstanceOf(Player))
+  assert(other:isInstanceOf(Player))
   if other == self then return 0 end
   local right = 0
   local temp = self

lua/server/gamelogic.lua

@@ -41,6 +41,7 @@ function GameLogic:run()
   local room = self.room
   table.shuffle(self.room.players)
   self:assignRoles()
+  self.room.game_started = true
   room:doBroadcastNotify("StartGame", "")
   room:adjustSeats()
 
@@ -52,7 +53,6 @@ function GameLogic:run()
   self:attachSkillToPlayers()
   self:prepareForStart()
 
-  self.room.game_started = true
   self:action()
 end
 

lua/server/request.lua

@@ -4,8 +4,8 @@ local function tellRoomToObserver(self, player)
   local observee = self.players[1]
   player:doNotify("Setup", json.encode{
     observee.id,
-    observee.serverplayer:getScreenName(),
+    observee._splayer:getScreenName(),
-    observee.serverplayer:getAvatar(),
+    observee._splayer:getAvatar(),
   })
   player:doNotify("EnterRoom", json.encode{
     #self.players, self.timeout, self.settings
@@ -16,8 +16,8 @@ local function tellRoomToObserver(self, player)
   for _, p in ipairs(self:getOtherPlayers(observee, true, true)) do
     player:doNotify("AddPlayer", json.encode{
       p.id,
-      p.serverplayer:getScreenName(),
+      p._splayer:getScreenName(),
-      p.serverplayer:getAvatar(),
+      p._splayer:getAvatar(),
     })
   end
 

lua/server/room.lua

@@ -131,8 +131,9 @@ function Room:resume()
   end
 
   ::GAME_OVER::
-  coroutine.close(main_co)
+  self:gameOver("")
-  self.main_co = nil
+  -- coroutine.close(main_co)
+  -- self.main_co = nil
   return true
 end
 
@@ -169,7 +170,7 @@ function Room:isReady()
       rest = p.request_timeout * 1000 - (os.getms() -
         p.request_start) / 1000
 
-      if rest <= 0 then
+      if rest <= 0 or p.serverplayer:getState() ~= fk.Player_Online then
         p._splayer:setThinking(false)
       end
     end
@@ -208,6 +209,7 @@ end
 --- 当这个函数返回之后，整个Room线程也宣告结束。
 ---@return nil
 function Room:run()
+  self.start_time = os.time()
   for _, p in fk.qlist(self.room:getPlayers()) do
     local player = ServerPlayer:new(p)
     player.room = self
@@ -2863,6 +2865,9 @@ local function shouldUpdateWinRate(room)
   if room.settings.enableFreeAssign then
     return false
   end
+  if os.time() - room.start_time < 45 then
+    return false
+  end
   for _, p in ipairs(room.players) do
     if p.id < 0 then return false end
   end

lua/server/serverplayer.lua

@@ -284,8 +284,8 @@ function ServerPlayer:reconnect()
 
   self:doNotify("Setup", json.encode{
     self.id,
-    self.serverplayer:getScreenName(),
+    self._splayer:getScreenName(),
-    self.serverplayer:getAvatar(),
+    self._splayer:getAvatar(),
   })
   self:doNotify("EnterLobby", "")
   self:doNotify("EnterRoom", json.encode{
@@ -298,8 +298,8 @@ function ServerPlayer:reconnect()
   for _, p in ipairs(room:getOtherPlayers(self, true, true)) do
     self:doNotify("AddPlayer", json.encode{
       p.id,
-      p.serverplayer:getScreenName(),
+      p._splayer:getScreenName(),
-      p.serverplayer:getAvatar(),
+      p._splayer:getAvatar(),
     })
   end
 

src/server/room.cpp

@@ -267,7 +267,7 @@ void Room::removePlayer(ServerPlayer *player) {
     server->addPlayer(runner);
 
     // 如果走小道的人不是单机启动玩家 那么直接ban
-    if (!runner->getSocket()->peerAddress().contains("127.0.0.1")) {
+    if (!runner->getSocket()->peerAddress().contains("127.0.0.1") && !player->isDied()) {
       server->temporarilyBan(runner->getId());
     }
 

src/server/server.cpp

@@ -38,6 +38,11 @@ Server::Server(QObject *parent) : QObject(parent) {
   connect(server, &ServerSocket::new_connection, this,
           &Server::processNewConnection);
 
+  udpSocket = new QUdpSocket(this);
+  udpSocket->bind(9527);
+  connect(udpSocket, &QUdpSocket::readyRead,
+          this, &Server::readPendingDatagrams);
+
   // 创建第一个房间，这个房间作为“大厅房间”
   nextRoomId = 0;
   createRoom(nullptr, "Lobby", INT32_MAX);
@@ -520,6 +525,7 @@ void Server::onUserDisconnected() {
     player->setSocket(nullptr);
     // TODO: add a robot
   } else {
+    player->setState(Player::Robot); // 大厅！然而又不能设Offline
     player->deleteLater();
   }
 }
@@ -575,6 +581,9 @@ void Server::readConfig() {
   config = QJsonDocument::fromJson(json).object();
 
   // defaults
+  SET_DEFAULT_CONFIG("description", "FreeKill Server");
+  SET_DEFAULT_CONFIG("iconUrl", "https://img1.imgtp.com/2023/07/01/DGUdj8eu.png");
+  SET_DEFAULT_CONFIG("capacity", 100);
   SET_DEFAULT_CONFIG("tempBanTime", 20);
 }
 
@@ -610,3 +619,27 @@ void Server::temporarilyBan(int playerId) {
       });
   emit player->kicked();
 }
+
+void Server::readPendingDatagrams() {
+  while (udpSocket->hasPendingDatagrams()) {
+    QNetworkDatagram datagram = udpSocket->receiveDatagram();
+    if (datagram.isValid()) {
+      processDatagram(datagram.data(), datagram.senderAddress(), datagram.senderPort());
+    }
+  }
+}
+
+void Server::processDatagram(const QByteArray &msg, const QHostAddress &addr, uint port) {
+  if (msg == "fkDetectServer") {
+    udpSocket->writeDatagram("me", addr, port);
+  } else if (msg == "fkGetDetail") {
+    udpSocket->writeDatagram(JsonArray2Bytes(QJsonArray({
+            FK_VERSION,
+            getConfig("iconUrl"),
+            getConfig("description"),
+            getConfig("capacity"),
+            players.count(),
+            })), addr, port);
+  }
+  udpSocket->flush();
+}

src/server/server.h

@@ -54,6 +54,7 @@ signals:
 public slots:
   void processNewConnection(ClientSocket *client);
   void processRequest(const QByteArray &msg);
+  void readPendingDatagrams();
 
   void onRoomAbandoned();
   void onUserDisconnected();
@@ -62,6 +63,8 @@ public slots:
 private:
   friend class Shell;
   ServerSocket *server;
+  QUdpSocket *udpSocket;
+
   Room *m_lobby;
   QMap<int, Room *> rooms;
   QStack<Room *> idle_rooms;
@@ -83,6 +86,7 @@ private:
 
   void handleNameAndPassword(ClientSocket *client, const QString &name,
                              const QString &password, const QString &md5_str);
+  void processDatagram(const QByteArray &msg, const QHostAddress &addr, uint port);
 };
 
 extern Server *ServerInstance;

src/server/shell.cpp

@@ -318,6 +318,11 @@ void Shell::run() {
       return;
     }
 
+    if (!strcmp(bytes, "crash")) {
+      qFatal("Crashing."); // should dump core
+      return;
+    }
+
     if (*bytes)
       add_history(bytes);
 

src/ui/qmlbackend.cpp

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "qmlbackend.h"
+#include <qjsondocument.h>
 
 #ifndef FK_SERVER_ONLY
 #include <qaudiooutput.h>
@@ -26,6 +27,10 @@ QmlBackend::QmlBackend(QObject *parent) : QObject(parent) {
 #ifndef FK_SERVER_ONLY
   engine = nullptr;
   rsa = RSA_new();
+  udpSocket = new QUdpSocket(this);
+  udpSocket->bind(0);
+  connect(udpSocket, &QUdpSocket::readyRead,
+          this, &QmlBackend::readPendingDatagrams);
 #endif
 }
 
@@ -320,4 +325,50 @@ void QmlBackend::createModBackend() {
   engine->rootContext()->setContextProperty("ModBackend", new ModMaker);
 }
 
+
+void QmlBackend::detectServer() {
+  static const char *ask_str = "fkDetectServer";
+  udpSocket->writeDatagram(ask_str,
+      strlen(ask_str),
+      QHostAddress::Broadcast,
+      9527);
+}
+
+void QmlBackend::getServerInfo(const QString &address) {
+  QString addr = "127.0.0.1";
+  ushort port = 9527u;
+  static const char *ask_str = "fkGetDetail";
+
+  if (address.contains(QChar(':'))) {
+    QStringList texts = address.split(QChar(':'));
+    addr = texts.value(0);
+    port = texts.value(1).toUShort();
+  } else {
+    addr = address;
+  }
+
+  udpSocket->writeDatagram(ask_str,
+      strlen(ask_str),
+      QHostAddress(addr), port);
+}
+
+void QmlBackend::readPendingDatagrams() {
+  while (udpSocket->hasPendingDatagrams()) {
+    QNetworkDatagram datagram = udpSocket->receiveDatagram();
+    if (datagram.isValid()) {
+      auto data = datagram.data();
+      auto addr = datagram.senderAddress();
+      // auto port = datagram.senderPort();
+
+      if (data == "me") {
+        emit notifyUI("ServerDetected", addr.toString());
+      } else {
+        auto arr = QJsonDocument::fromJson(data).array();
+        arr.prepend(addr.toString());
+        emit notifyUI("GetServerDetail", JsonArray2Bytes(arr));
+      }
+    }
+  }
+}
+
 #endif

src/ui/qmlbackend.h

@@ -55,6 +55,9 @@ public:
 
   Q_INVOKABLE void createModBackend();
 
+  Q_INVOKABLE void detectServer();
+  Q_INVOKABLE void getServerInfo(const QString &addr);
+
   qreal volume() const { return m_volume; }
   void setVolume(qreal v) { m_volume = v; }
 
@@ -64,10 +67,15 @@ signals:
   void notifyUI(const QString &command, const QString &jsonData);
   void volumeChanged(qreal);
 
+private slots:
+  void readPendingDatagrams();
+
 private:
   Q_PROPERTY(qreal volume READ volume WRITE setVolume NOTIFY volumeChanged)
 
   QQmlApplicationEngine *engine;
+
+  QUdpSocket *udpSocket;
   RSA *rsa;
   QString aes_key;
   qreal m_volume;