refactor the challenge

src/main/java/emu/grasscutter/scripts/data/SceneGadget.java

@@ -10,4 +10,5 @@ public class SceneGadget extends SceneObject{
 	public int state;
 	public int point_type;
 	public SceneBossChest boss_chest;
+	public int interact_id;
 }

src/main/java/emu/grasscutter/scripts/data/SceneGroup.java

@@ -73,7 +73,7 @@ public class SceneGroup {
 		return bindings;
 	}
 
-	public SceneGroup load(int sceneId){
+	public synchronized SceneGroup load(int sceneId){
 		if(loaded){
 			return this;
 		}
@@ -118,6 +118,7 @@ public class SceneGroup {
 				garbages = new SceneGarbage();
 				if (garbagesTable.checktable().get("gadgets") != LuaValue.NIL) {
 					garbages.gadgets = ScriptLoader.getSerializer().toList(SceneGadget.class, garbagesTable.checktable().get("gadgets").checktable());
+					garbages.gadgets.forEach(m -> m.group = this);
 				}
 			}
 			

src/main/java/emu/grasscutter/scripts/data/SceneMonster.java

@@ -7,4 +7,6 @@ import lombok.ToString;
 @Setter
 public class SceneMonster extends SceneObject{
 	public int monster_id;
+	public int pose_id;
+	public int drop_id;
 }