Added interface display for multiplayer games (#360)

src/main/java/emu/grasscutter/command/commands/GiveAllCommand.java

@@ -83,6 +83,9 @@ public class GiveAllCommand implements CommandHandler {
             Avatar avatar = new Avatar(avatarData);
             avatar.setLevel(90);
             avatar.setPromoteLevel(6);
+            for(int i = 1;i <= 6;++i){
+                avatar.getTalentIdList().add((avatar.getAvatarId()-10000000)*10+i);
+            }
             // This will handle stats and talents
             avatar.recalcStats();
             player.addAvatar(avatar);

src/main/java/emu/grasscutter/server/packet/recv/HandlerGetOnlinePlayerListReq.java

+package emu.grasscutter.server.packet.recv;
+
+import emu.grasscutter.net.packet.Opcodes;
+import emu.grasscutter.net.packet.PacketHandler;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.server.game.GameSession;
+import emu.grasscutter.server.packet.send.PacketGetOnlinePlayerListRsp;
+
+@Opcodes(PacketOpcodes.GetOnlinePlayerListReq)
+public class HandlerGetOnlinePlayerListReq extends PacketHandler {
+    @Override
+    public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
+        session.send(new PacketGetOnlinePlayerListRsp(session.getPlayer()));
+    }
+}

src/main/java/emu/grasscutter/server/packet/send/PacketGetOnlinePlayerListRsp.java

+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.GetOnlinePlayerListReqOuterClass;
+import emu.grasscutter.net.proto.GetOnlinePlayerListRspOuterClass.*;
+import emu.grasscutter.net.proto.MpSettingTypeOuterClass;
+import emu.grasscutter.net.proto.OnlinePlayerInfoOuterClass.OnlinePlayerInfo;
+import emu.grasscutter.net.proto.ProfilePictureOuterClass.ProfilePicture;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+public class PacketGetOnlinePlayerListRsp extends BasePacket {
+    public PacketGetOnlinePlayerListRsp(Player session){
+        super(PacketOpcodes.GetOnlinePlayerListRsp);
+        Map<Integer, Player> playersMap = Grasscutter.getGameServer().getPlayers();
+        GetOnlinePlayerListRsp.Builder proto = GetOnlinePlayerListRsp.newBuilder();
+        if(playersMap.size() != 0){
+            List<OnlinePlayerInfo> playerInfoList = new ArrayList<>();
+
+            for(Player player:playersMap.values()){
+                ProfilePicture.Builder picture = ProfilePicture.newBuilder();
+                OnlinePlayerInfo.Builder playerInfo = OnlinePlayerInfo.newBuilder();
+
+                if(player.getUid() == session.getUid())continue;
+                picture.setAvatarId(player.getProfile().getAvatarId())
+                        .build();
+                System.out.println(player.getHeadImage());
+                playerInfo.setUid(player.getUid())
+                        .setNickname(player.getNickname())
+                        .setPlayerLevel(player.getLevel())
+                        .setMpSettingType(MpSettingTypeOuterClass.MpSettingType.MP_SETTING_ENTER_AFTER_APPLY)
+                        .setCurPlayerNumInWorld(player.getWorld().getPlayerCount())
+                        .setWorldLevel(player.getWorldLevel())
+                        .setNameCardId(player.getNameCardId())
+                        .setProfilePicture(picture);
+                if(!Objects.equals(player.getSignature(), "")){
+                    playerInfo.setSignature(player.getSignature());
+                }
+                playerInfoList.add(playerInfo.build());
+            }
+            for (OnlinePlayerInfo onlinePlayerInfo : playerInfoList) {
+                proto.addPlayerInfoList(onlinePlayerInfo).build();
+            }
+        }
+        this.setData(proto);
+    }
+}