仅管理员在线时可以召唤指令之剑，召唤时如果背包内空间不足，则丢在地上

src/main/java/ling/coordinateRecorder/Commands/ZbCommand.java

@@ -32,7 +32,9 @@ import org.jooq.impl.DSL;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.HashMap;
 import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import static ling.database.tables.LocationnotepadTB.LOCATIONNOTEPAD;
 import static ling.database.tables.PlayersettingsTB.PLAYERSETTINGS;
@@ -446,6 +448,16 @@ public class ZbCommand implements CommandExecutor, TabCompleter {
             return;
         }
         
+        AtomicBoolean isAdmin = new AtomicBoolean(false);
+        PlayerMap.getCurrent().traversePlayer(p -> {
+            if (p.getPlayer().isOp())
+                isAdmin.set(true);
+        });
+        if (!isAdmin.get()) {
+            player.sendMessage("没有任何管理员用户在线，无法召唤指令之剑");
+            return;
+        }
+        
         try {
             data.addFraction(30);
             PlayerMap.getCurrent().broadcastScore(data);
@@ -474,7 +486,12 @@ public class ZbCommand implements CommandExecutor, TabCompleter {
         cheat.save(per);
         
         sword.setItemMeta(meta);
-        player.getInventory().addItem(sword);
+        HashMap<Integer, ItemStack> map = player.getInventory().addItem(sword);
+        //如果玩家背包没有足够的容量容纳物品，则丢弃在玩家附近
+        Location dropLocation = player.getLocation().add(0, 1, 0);
+        for (ItemStack item : map.values()) {
+            player.getWorld().dropItem(dropLocation, item);
+        }
         
         BaseComponent message = new TextComponent("玩家 " + player.getName() + " 召唤了");
         message.addExtra(CoordinateRecorder.getItemShowService().addItem(sword));