bug fix #30

src/main/java/pers/xanadu/enderdragon/manager/DragonManager.java

@@ -19,6 +19,7 @@
 import pers.xanadu.enderdragon.metadata.DragonInfo;
 import pers.xanadu.enderdragon.reward.RewardDist;
 import pers.xanadu.enderdragon.reward.SpecialLoot;
+import pers.xanadu.enderdragon.util.CollectionUtil;
 import pers.xanadu.enderdragon.util.ExtraPotionEffect;
 import pers.xanadu.enderdragon.metadata.MyDragon;
 import pers.xanadu.enderdragon.util.Version;
@@ -297,7 +298,7 @@ else if("exp".equals(type)){
                 if(target == null) continue;
                 if("%attacker%".equals(target)){
                     loot_mp.compute(0,(k,v)->{
-                        if(v==null) return Collections.singletonList(specialLoot);
+                        if(v==null) return CollectionUtil.vec(specialLoot);
                         v.add(specialLoot);
                         return v;
                     });
@@ -307,7 +308,7 @@ else if("exp".equals(type)){
                     if (matcher.find()) {
                         Integer rank = Integer.parseInt(matcher.group(1));
                         loot_mp.compute(rank,(k,v)->{
-                            if(v==null) return Collections.singletonList(specialLoot);
+                            if(v==null) return CollectionUtil.vec(specialLoot);
                             v.add(specialLoot);
                             return v;
                         });

src/main/java/pers/xanadu/enderdragon/util/CollectionUtil.java

@@ -0,0 +1,11 @@
+package pers.xanadu.enderdragon.util;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public final class CollectionUtil {
+    public static <T> List<T> vec(T ...elems) {
+        return Arrays.stream(elems).collect(Collectors.toList());
+    }
+}

src/main/resources/plugin.yml

@@ -1,5 +1,5 @@
 name: EnderDragon
-version: 2.5.4
+version: 2.5.5
 main: pers.xanadu.enderdragon.EnderDragon
 author: Xanadu13
 api-version: 1.13