fix gadget infinity create

src/main/java/emu/grasscutter/scripts/SceneScriptManager.java

@@ -351,6 +351,16 @@ public class SceneScriptManager {
 	}
 
 	public EntityGadget createGadget(int groupId, int blockId, SceneGadget g) {
+        if(g.isOneoff){
+            var hasEntity = getScene().getEntities().values().stream()
+                .filter(e -> e instanceof EntityGadget)
+                .filter(e -> e.getGroupId() == g.group.id)
+                .filter(e -> e.getConfigId() == g.config_id)
+                .findFirst();
+            if(hasEntity.isPresent()){
+                return null;
+            }
+        }
 		EntityGadget entity = new EntityGadget(getScene(), g.gadget_id, g.pos);
 
 		if (entity.getGadgetData() == null){

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

@@ -11,4 +11,9 @@ public class SceneGadget extends SceneObject{
 	public int point_type;
 	public SceneBossChest boss_chest;
 	public int interact_id;
+    public boolean isOneoff;
+
+    public void setIsOneoff(boolean isOneoff){
+        this.isOneoff = isOneoff;
+    }
 }

src/main/java/emu/grasscutter/scripts/serializer/LuaSerializer.java

 package emu.grasscutter.scripts.serializer;
 
- import com.esotericsoftware.reflectasm.ConstructorAccess;
+import com.esotericsoftware.reflectasm.ConstructorAccess;
 import com.esotericsoftware.reflectasm.MethodAccess;
-
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.scripts.ScriptUtils;
 import lombok.AccessLevel;
@@ -12,8 +11,6 @@ import lombok.experimental.FieldDefaults;
 import org.luaj.vm2.LuaTable;
 import org.luaj.vm2.LuaValue;
 
-import java.lang.reflect.ParameterizedType;
-import java.lang.reflect.Type;
 import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -56,6 +53,8 @@ public class LuaSerializer implements Serializer {
 				    	object = (T) (Float) keyValue.tofloat(); // terrible...
 				    } else if (keyValue.isstring()) {
 				    	object = (T) keyValue.tojstring();
+                    } else if (keyValue.isboolean()) {
+                        object = (T) (Boolean) keyValue.toboolean();
                     } else {
 				    	object = (T) keyValue;
 				    }
@@ -118,6 +117,8 @@ public class LuaSerializer implements Serializer {
 						methodAccess.invoke(object, fieldMeta.index, keyValue.toint());
 				    } else if (fieldMeta.getType().equals(String.class)) {
 						methodAccess.invoke(object, fieldMeta.index, keyValue.tojstring());
+                    } else if (fieldMeta.getType().equals(boolean.class)) {
+                        methodAccess.invoke(object, fieldMeta.index, keyValue.toboolean());
                     } else {
 						methodAccess.invoke(object, fieldMeta.index, keyValue.tojstring());
 				    }