add: afk name prefix when player is afk

src/main/java/io/ib67/sfcraft/module/AFKModule.java

@@ -1,28 +1,63 @@
 package io.ib67.sfcraft.module;
 
+import com.google.inject.Inject;
 import io.ib67.sfcraft.ServerModule;
 import io.ib67.sfcraft.callback.SFCallbacks;
+import io.ib67.sfcraft.inject.MinecraftServerSupplier;
+import net.fabricmc.fabric.api.networking.v1.PacketSender;
+import net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents;
+import net.minecraft.network.packet.s2c.play.TeamS2CPacket;
+import net.minecraft.scoreboard.Team;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.network.ServerPlayNetworkHandler;
 import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.text.Text;
 import net.minecraft.util.Colors;
 
+import java.util.Objects;
+
 public class AFKModule extends ServerModule {
+    @Inject
+    private MinecraftServerSupplier serverSupplier;
+    private Team team;
+
     @Override
     public void onInitialize() {
         SFCallbacks.PLAYER_IDLE.register(this::onAFK);
+        ServerPlayConnectionEvents.JOIN.register(this::onJoin);
+    }
+
+    @Override
+    public void onEnable() {
+        if (team == null) {
+            team = new Team(serverSupplier.get().getScoreboard(), "afk");
+            team.setPrefix(Text.literal("[挂机] ").withColor(Colors.LIGHT_GRAY));
+        }
     }
 
     private void onAFK(ServerPlayerEntity player, boolean afk) {
+        String playerName = player.getName().getLiteralString();
+        Objects.requireNonNull(playerName);
         if (afk) {
+            team.getPlayerList().add(playerName);
+            player.server.getPlayerManager().sendToAll(TeamS2CPacket.updateTeam(team, true));
             player.server.getPlayerManager().broadcast(
-                    Text.literal(" * " + player.getName().getLiteralString() + " 正在挂机.").withColor(Colors.LIGHT_GRAY),
+                    Text.literal(" * " + playerName + " 正在挂机.").withColor(Colors.LIGHT_GRAY),
                     false
             );
         } else {
+            team.getPlayerList().remove(playerName);
+            player.server.getPlayerManager().sendToAll(TeamS2CPacket.updateTeam(team, true));
             player.server.getPlayerManager().broadcast(
-                    Text.literal(" * " + player.getName().getLiteralString() + " 回来了.").withColor(Colors.LIGHT_GRAY),
+                    Text.literal(" * " + playerName + " 回来了.").withColor(Colors.LIGHT_GRAY),
                     false
             );
         }
     }
+
+    private void onJoin(ServerPlayNetworkHandler serverPlayNetworkHandler, PacketSender packetSender, MinecraftServer minecraftServer) {
+        if (team != null) {
+            packetSender.sendPacket(TeamS2CPacket.updateTeam(team, true));
+        }
+    }
 }