Merge branch 'new-drop' of github.com:eternalcomet/ys into drops

# Conflicts:
#	src/main/java/emu/grasscutter/game/world/Scene.java
#	src/main/java/emu/grasscutter/scripts/SceneScriptManager.java
#	src/main/java/emu/grasscutter/scripts/data/SceneMonster.java

src/generated/main/java/emu/grasscutter/net/proto/WorldChestOpenNotifyOuterClass.java

@@ -0,0 +1,689 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: WorldChestOpenNotify.proto
+
+package emu.grasscutter.net.proto;
+
+public final class WorldChestOpenNotifyOuterClass {
+  private WorldChestOpenNotifyOuterClass() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  public interface WorldChestOpenNotifyOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:WorldChestOpenNotify)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>uint32 group_id = 6;</code>
+     * @return The groupId.
+     */
+    int getGroupId();
+
+    /**
+     * <code>uint32 scene_id = 9;</code>
+     * @return The sceneId.
+     */
+    int getSceneId();
+
+    /**
+     * <code>uint32 config_id = 12;</code>
+     * @return The configId.
+     */
+    int getConfigId();
+  }
+  /**
+   * <pre>
+   * CmdId: 3295
+   * EnetChannelId: 0
+   * EnetIsReliable: true
+   * </pre>
+   *
+   * Protobuf type {@code WorldChestOpenNotify}
+   */
+  public static final class WorldChestOpenNotify extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:WorldChestOpenNotify)
+      WorldChestOpenNotifyOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use WorldChestOpenNotify.newBuilder() to construct.
+    private WorldChestOpenNotify(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private WorldChestOpenNotify() {
+    }
+
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(
+        UnusedPrivateParameter unused) {
+      return new WorldChestOpenNotify();
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private WorldChestOpenNotify(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 48: {
+
+              groupId_ = input.readUInt32();
+              break;
+            }
+            case 72: {
+
+              sceneId_ = input.readUInt32();
+              break;
+            }
+            case 96: {
+
+              configId_ = input.readUInt32();
+              break;
+            }
+            default: {
+              if (!parseUnknownField(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.internal_static_WorldChestOpenNotify_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.internal_static_WorldChestOpenNotify_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify.class, emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify.Builder.class);
+    }
+
+    public static final int GROUP_ID_FIELD_NUMBER = 6;
+    private int groupId_;
+    /**
+     * <code>uint32 group_id = 6;</code>
+     * @return The groupId.
+     */
+    @java.lang.Override
+    public int getGroupId() {
+      return groupId_;
+    }
+
+    public static final int SCENE_ID_FIELD_NUMBER = 9;
+    private int sceneId_;
+    /**
+     * <code>uint32 scene_id = 9;</code>
+     * @return The sceneId.
+     */
+    @java.lang.Override
+    public int getSceneId() {
+      return sceneId_;
+    }
+
+    public static final int CONFIG_ID_FIELD_NUMBER = 12;
+    private int configId_;
+    /**
+     * <code>uint32 config_id = 12;</code>
+     * @return The configId.
+     */
+    @java.lang.Override
+    public int getConfigId() {
+      return configId_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (groupId_ != 0) {
+        output.writeUInt32(6, groupId_);
+      }
+      if (sceneId_ != 0) {
+        output.writeUInt32(9, sceneId_);
+      }
+      if (configId_ != 0) {
+        output.writeUInt32(12, configId_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (groupId_ != 0) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeUInt32Size(6, groupId_);
+      }
+      if (sceneId_ != 0) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeUInt32Size(9, sceneId_);
+      }
+      if (configId_ != 0) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeUInt32Size(12, configId_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify)) {
+        return super.equals(obj);
+      }
+      emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify other = (emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify) obj;
+
+      if (getGroupId()
+          != other.getGroupId()) return false;
+      if (getSceneId()
+          != other.getSceneId()) return false;
+      if (getConfigId()
+          != other.getConfigId()) return false;
+      if (!unknownFields.equals(other.unknownFields)) return false;
+      return true;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + GROUP_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getGroupId();
+      hash = (37 * hash) + SCENE_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getSceneId();
+      hash = (37 * hash) + CONFIG_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getConfigId();
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * <pre>
+     * CmdId: 3295
+     * EnetChannelId: 0
+     * EnetIsReliable: true
+     * </pre>
+     *
+     * Protobuf type {@code WorldChestOpenNotify}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:WorldChestOpenNotify)
+        emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotifyOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.internal_static_WorldChestOpenNotify_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.internal_static_WorldChestOpenNotify_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify.class, emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify.Builder.class);
+      }
+
+      // Construct using emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
+        }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        groupId_ = 0;
+
+        sceneId_ = 0;
+
+        configId_ = 0;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.internal_static_WorldChestOpenNotify_descriptor;
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify getDefaultInstanceForType() {
+        return emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify build() {
+        emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify buildPartial() {
+        emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify result = new emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify(this);
+        result.groupId_ = groupId_;
+        result.sceneId_ = sceneId_;
+        result.configId_ = configId_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify) {
+          return mergeFrom((emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify other) {
+        if (other == emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify.getDefaultInstance()) return this;
+        if (other.getGroupId() != 0) {
+          setGroupId(other.getGroupId());
+        }
+        if (other.getSceneId() != 0) {
+          setSceneId(other.getSceneId());
+        }
+        if (other.getConfigId() != 0) {
+          setConfigId(other.getConfigId());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private int groupId_ ;
+      /**
+       * <code>uint32 group_id = 6;</code>
+       * @return The groupId.
+       */
+      @java.lang.Override
+      public int getGroupId() {
+        return groupId_;
+      }
+      /**
+       * <code>uint32 group_id = 6;</code>
+       * @param value The groupId to set.
+       * @return This builder for chaining.
+       */
+      public Builder setGroupId(int value) {
+        
+        groupId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>uint32 group_id = 6;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearGroupId() {
+        
+        groupId_ = 0;
+        onChanged();
+        return this;
+      }
+
+      private int sceneId_ ;
+      /**
+       * <code>uint32 scene_id = 9;</code>
+       * @return The sceneId.
+       */
+      @java.lang.Override
+      public int getSceneId() {
+        return sceneId_;
+      }
+      /**
+       * <code>uint32 scene_id = 9;</code>
+       * @param value The sceneId to set.
+       * @return This builder for chaining.
+       */
+      public Builder setSceneId(int value) {
+        
+        sceneId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>uint32 scene_id = 9;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearSceneId() {
+        
+        sceneId_ = 0;
+        onChanged();
+        return this;
+      }
+
+      private int configId_ ;
+      /**
+       * <code>uint32 config_id = 12;</code>
+       * @return The configId.
+       */
+      @java.lang.Override
+      public int getConfigId() {
+        return configId_;
+      }
+      /**
+       * <code>uint32 config_id = 12;</code>
+       * @param value The configId to set.
+       * @return This builder for chaining.
+       */
+      public Builder setConfigId(int value) {
+        
+        configId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>uint32 config_id = 12;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearConfigId() {
+        
+        configId_ = 0;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFields(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:WorldChestOpenNotify)
+    }
+
+    // @@protoc_insertion_point(class_scope:WorldChestOpenNotify)
+    private static final emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify();
+    }
+
+    public static emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<WorldChestOpenNotify>
+        PARSER = new com.google.protobuf.AbstractParser<WorldChestOpenNotify>() {
+      @java.lang.Override
+      public WorldChestOpenNotify parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new WorldChestOpenNotify(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<WorldChestOpenNotify> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<WorldChestOpenNotify> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_WorldChestOpenNotify_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_WorldChestOpenNotify_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\032WorldChestOpenNotify.proto\"M\n\024WorldChe" +
+      "stOpenNotify\022\020\n\010group_id\030\006 \001(\r\022\020\n\010scene_" +
+      "id\030\t \001(\r\022\021\n\tconfig_id\030\014 \001(\rB\033\n\031emu.grass" +
+      "cutter.net.protob\006proto3"
+    };
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        });
+    internal_static_WorldChestOpenNotify_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_WorldChestOpenNotify_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_WorldChestOpenNotify_descriptor,
+        new java.lang.String[] { "GroupId", "SceneId", "ConfigId", });
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

src/main/java/emu/grasscutter/command/commands/ReloadCommand.java

@@ -19,7 +19,7 @@ public final class ReloadCommand implements CommandHandler {
         Grasscutter.loadConfig();
         Grasscutter.loadLanguage();
         Grasscutter.getGameServer().getGachaSystem().load();
-        Grasscutter.getGameServer().getDropSystem().load();
+        Grasscutter.getGameServer().getDropSystemLegacy().load();
         Grasscutter.getGameServer().getShopSystem().load();
 
         CommandHandler.sendMessage(sender, translate(sender, "commands.reload.reload_done"));

src/main/java/emu/grasscutter/data/GameData.java

@@ -81,6 +81,8 @@ public class GameData {
     @Getter private static final Int2ObjectMap<CookRecipeData> cookRecipeDataMap = new Int2ObjectOpenHashMap<>();
     @Getter private static final Int2ObjectMap<CompoundData> compoundDataMap=new Int2ObjectOpenHashMap<>();
     @Getter private static final Int2ObjectMap<DailyDungeonData> dailyDungeonDataMap = new Int2ObjectOpenHashMap<>();
+    @Getter private static final Int2ObjectMap<DropTableData> dropTableDataMap=new Int2ObjectOpenHashMap<>();
+    @Getter private static final Int2ObjectMap<DropMaterialData> dropMaterialDataMap=new Int2ObjectOpenHashMap<>();
     @Getter private static final Int2ObjectMap<DungeonData> dungeonDataMap = new Int2ObjectOpenHashMap<>();
     @Getter private static final Int2ObjectMap<DungeonEntryData> dungeonEntryDataMap = new Int2ObjectOpenHashMap<>();
     @Getter private static final Int2ObjectMap<EnvAnimalGatherConfigData> envAnimalGatherConfigDataMap = new Int2ObjectOpenHashMap<>();

src/main/java/emu/grasscutter/data/common/DropItemData.java

@@ -0,0 +1,12 @@
+package emu.grasscutter.data.common;
+
+import com.google.gson.annotations.SerializedName;
+import lombok.Getter;
+
+@Getter
+public class DropItemData {
+    @SerializedName(value="itemId")
+    private int id;
+    private String countRange;
+    private int weight;
+}

src/main/java/emu/grasscutter/data/excels/DropMaterialData.java

@@ -0,0 +1,18 @@
+package emu.grasscutter.data.excels;
+
+import emu.grasscutter.data.GameResource;
+import emu.grasscutter.data.ResourceType;
+import lombok.Getter;
+
+@ResourceType(name = "DropMaterialExcelConfigData.json")
+@Getter
+public class DropMaterialData extends GameResource {
+    @Getter(onMethod = @__(@Override))
+    private int id;
+    private boolean useOnGain;
+    private boolean disableFirstGainHint;
+    private boolean autoPick;
+    private boolean dropSeparately;
+    private int groupId;
+    private boolean forceGainHint;
+}

src/main/java/emu/grasscutter/data/excels/DropTableData.java

@@ -0,0 +1,25 @@
+package emu.grasscutter.data.excels;
+
+import emu.grasscutter.data.GameResource;
+import emu.grasscutter.data.ResourceType;
+import emu.grasscutter.data.ResourceType.LoadPriority;
+import emu.grasscutter.data.common.DropItemData;
+import lombok.Getter;
+
+import java.util.List;
+
+@ResourceType(name ={"DropTableExcelConfigData.json","DropSubTableExcelConfigData.json"} , loadPriority = LoadPriority.HIGH)
+@Getter
+public class DropTableData extends GameResource {
+    @Getter(onMethod = @__(@Override))
+    private int id;
+    private int randomType;
+    private int dropLevel;
+    private List<DropItemData> dropVec;
+    private int nodeType;
+    private boolean fallToGround;
+    private int sourceType;
+    private int everydayLimit;
+    private int historyLimit;
+    private int activityLimit;
+}

src/main/java/emu/grasscutter/game/drop/BaseDropData.java

@@ -0,0 +1,11 @@
+package emu.grasscutter.game.drop;
+
+import lombok.Getter;
+
+@Getter
+public class BaseDropData {
+    private int minLevel;
+    private String index;
+    private int dropId;
+    private int dropCount;
+}

src/main/java/emu/grasscutter/game/drop/ChestDropData.java

@@ -0,0 +1,9 @@
+package emu.grasscutter.game.drop;
+
+import lombok.Getter;
+
+@Getter
+public class ChestDropData extends BaseDropData {
+    private int sourceType;
+    private String type;
+}

src/main/java/emu/grasscutter/game/drop/DropData.java

@@ -1,5 +1,6 @@
 package emu.grasscutter.game.drop;
 
+@Deprecated
 public class DropData {
     private int minWeight;
     private int maxWeight;

src/main/java/emu/grasscutter/game/drop/DropSystem.java

@@ -3,104 +3,257 @@ package emu.grasscutter.game.drop;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.data.DataLoader;
 import emu.grasscutter.data.GameData;
-import emu.grasscutter.data.excels.ItemData;
+import emu.grasscutter.data.common.DropItemData;
-import emu.grasscutter.game.entity.EntityItem;
+import emu.grasscutter.data.excels.DropMaterialData;
+import emu.grasscutter.data.excels.DropTableData;
 import emu.grasscutter.game.entity.EntityMonster;
+import emu.grasscutter.game.entity.GameEntity;
 import emu.grasscutter.game.inventory.GameItem;
 import emu.grasscutter.game.inventory.ItemType;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.game.props.ActionReason;
-import emu.grasscutter.game.world.Scene;
+import emu.grasscutter.scripts.data.SceneMonster;
 import emu.grasscutter.server.game.BaseGameSystem;
 import emu.grasscutter.server.game.GameServer;
-import emu.grasscutter.utils.Position;
+import emu.grasscutter.server.packet.send.PacketDropHintNotify;
-import emu.grasscutter.utils.Utils;
+import emu.grasscutter.server.packet.send.PacketGadgetAutoPickDropInfoNotify;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
-import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 
-import java.util.List;
+import java.util.*;
 
 public class DropSystem extends BaseGameSystem {
-    private final Int2ObjectMap<List<DropData>> dropData;
+    private final Int2ObjectMap<DropTableData> dropTable;
+    private final Map<String, List<BaseDropData>> chestReward;
+    private final Map<String, List<BaseDropData>> monsterDrop;
+    private final Random rand;
+    //TODO:don't know how to determine boss level.Have to hard-code the data from wiki.
+    private final int[] bossLevel = {36, 37, 41, 50, 62, 72, 83, 91, 93};
 
     public DropSystem(GameServer server) {
         super(server);
-        this.dropData = new Int2ObjectOpenHashMap<>();
+        rand = new Random();
-        this.load();
+        dropTable = GameData.getDropTableDataMap();
-    }
+        chestReward = new HashMap<>();
-
+        monsterDrop = new HashMap<>();
-    public Int2ObjectMap<List<DropData>> getDropData() {
-        return dropData;
-    }
-
-    public synchronized void load() {
-        getDropData().clear();
         try {
-            List<DropInfo> banners = DataLoader.loadList("Drop.json", DropInfo.class);
+            List<ChestDropData> dataList = DataLoader.loadList("ChestDrop.json", ChestDropData.class);
-            if (banners.size() > 0) {
+            for (var i : dataList) {
-                for (DropInfo di : banners) {
+                if (!chestReward.containsKey(i.getIndex())) {
-                    getDropData().put(di.getMonsterId(), di.getDropDataList());
+                    chestReward.put(i.getIndex(), new ArrayList<>());
                 }
-                Grasscutter.getLogger().debug("Drop data successfully loaded.");
+                chestReward.get(i.getIndex()).add(i);
-            } else {
-                Grasscutter.getLogger().error("Unable to load drop data. Drop data size is 0.");
             }
         } catch (Exception e) {
-            Grasscutter.getLogger().error("Unable to load drop data.", e);
+            Grasscutter.getLogger().error("Unable to load chest drop data.Please place ChestDrop.json in data folder.");
         }
+        try {
+            List<BaseDropData> dataList = DataLoader.loadList("MonsterDrop.json", BaseDropData.class);
+            for (var i : dataList) {
+                if (!monsterDrop.containsKey(i.getIndex())) {
+                    monsterDrop.put(i.getIndex(), new ArrayList<>());
                 }
-    private void addDropEntity(DropData dd, Scene dropScene, ItemData itemData, Position pos, int num, Player target) {
+                monsterDrop.get(i.getIndex()).add(i);
-        if (!dd.isGive() && (itemData.getItemType() != ItemType.ITEM_VIRTUAL || itemData.getGadgetId() != 0)) {
-            EntityItem entity = new EntityItem(dropScene, target, itemData, pos, num, dd.isShare());
-            if (!dd.isShare())
-                dropScene.addEntityToSingleClient(target, entity);
-            else
-                dropScene.addEntity(entity);
-        } else {
-            if (target != null) {
-                target.getInventory().addItem(new GameItem(itemData, num), ActionReason.SubfieldDrop, true);
-            } else {
-                // target is null if items will be added are shared. no one could pick it up because of the combination(give + shared)
-                // so it will be sent to all players' inventories directly.
-                dropScene.getPlayers().forEach(x -> x.getInventory().addItem(new GameItem(itemData, num), ActionReason.SubfieldDrop, true));
             }
+        } catch (Exception e) {
+            Grasscutter.getLogger().error("Unable to load monster drop data.Please place MonsterDrop.json in data folder.");
         }
     }
 
-    private void processDrop(DropData dd, EntityMonster em, Player gp) {
+    private int queryDropData(String dropTag, int level, Map<String, List<BaseDropData>> rewards) {
-        int target = Utils.randomRange(1, 10000);
+        if (!rewards.containsKey(dropTag)) return 0;
-        if (target >= dd.getMinWeight() && target < dd.getMaxWeight()) {
+        var rewardList = rewards.get(dropTag);
-            ItemData itemData = GameData.getItemDataMap().get(dd.getItemId());
+        BaseDropData dropData = null;
-            int num = Utils.randomRange(dd.getMinCount(), dd.getMaxCount());
+        int minLevel = 0;
+        for (var i : rewardList) {
+            if (level >= i.getMinLevel() && i.getMinLevel() > minLevel) {
+                minLevel = i.getMinLevel();
+                dropData = i;
+            }
+        }
+        if (dropData == null) return 0;
+        return dropData.getDropId();
+    }
 
-            if (itemData == null) {
+    public boolean handleMonsterDrop(EntityMonster monster) {
+        int dropId;
+        int level = monster.getLevel();
+        SceneMonster sceneMonster = monster.getMetaMonster();
+        if (sceneMonster != null) {
+            if (sceneMonster.drop_tag != null) {
+                dropId = queryDropData(sceneMonster.drop_tag, level, monsterDrop);
+            } else {
+                dropId = sceneMonster.drop_id;
+            }
+        } else {
+            dropId = monster.getMonsterData().getKillDropId();
+        }
+        if (!dropTable.containsKey(dropId)) return false;
+        var dropData = dropTable.get(dropId);
+        List<GameItem> items = new ArrayList<>();
+        processDrop(dropData, 1, items);
+        if (dropData.isFallToGround()) {
+            dropItems(items, ActionReason.MonsterDie, monster, monster.getScene().getPlayers().get(0), true);
+        } else {
+            for (Player p : monster.getScene().getPlayers()) {
+                p.getInventory().addItems(items, ActionReason.MonsterDie);
+            }
+        }
+        return true;
+    }
+
+    public boolean handleChestDrop(int chestDropId, int dropCount, GameEntity bornFrom) {
+        if (!dropTable.containsKey(chestDropId)) return false;
+        var dropData = dropTable.get(chestDropId);
+        List<GameItem> items = new ArrayList<>();
+        processDrop(dropData, dropCount, items);
+        if (dropData.isFallToGround()) {
+            dropItems(items, ActionReason.OpenChest, bornFrom, bornFrom.getWorld().getHost(), false);
+        } else {
+            bornFrom.getWorld().getHost().getInventory().addItems(items, ActionReason.OpenChest);
+        }
+        return true;
+    }
+
+    public boolean handleChestDrop(String dropTag, int level, GameEntity bornFrom) {
+        int dropId = queryDropData(dropTag, level, chestReward);
+        if (dropId == 0) return false;
+        return handleChestDrop(dropId, 1, bornFrom);
+    }
+
+    public boolean handleBossChestDrop(String dropTag, Player player) {
+        int dropId = queryDropData(dropTag, bossLevel[player.getWorldLevel()], chestReward);
+        if (!dropTable.containsKey(dropId)) return false;
+        var dropData = dropTable.get(dropId);
+        List<GameItem> items = new ArrayList<>();
+        processDrop(dropData, 1, items);
+        player.getInventory().addItems(items, ActionReason.OpenWorldBossChest);
+        player.sendPacket(new PacketGadgetAutoPickDropInfoNotify(items));
+        return true;
+    }
+
+    private void processDrop(DropTableData dropData, int count, List<GameItem> items) {
+        //TODO:Not clear on the meaning of some fields,like "dropLevel".Will ignore them.
+        //TODO:solve drop limits,like everydayLimit.
+        if (count > 1) {
+            for (int i = 0; i < count; i++) processDrop(dropData, 1, items);
             return;
         }
-            if (itemData.isEquip()) {
+        if (dropData.getRandomType() == 0) {
-                for (int i = 0; i < num; i++) {
+            int weightSum = 0;
-                    float range = (2.5f + (.05f * num));
+            for (var i : dropData.getDropVec()) {
-                    Position pos = em.getPosition().nearby2d(range).addY(3f);
+                int id = i.getId();
-                    addDropEntity(dd, em.getScene(), itemData, pos, num, gp);
+                if (id == 0) continue;
+                weightSum += i.getWeight();
             }
+            if (weightSum == 0) return;
+            int weight = rand.nextInt(weightSum);
+            int sum = 0;
+            for (var i : dropData.getDropVec()) {
+                int id = i.getId();
+                if (id == 0) continue;
+                sum += i.getWeight();
+                if (weight < sum) {
+                    //win the item
+                    int amount = calculateDropAmount(i) * count;
+                    if (amount <= 0) break;
+                    if (dropTable.containsKey(id)) {
+                        processDrop(dropTable.get(id), amount, items);
                     } else {
-                Position pos = em.getPosition().clone().addY(3f);
+                        boolean flag = true;
-                addDropEntity(dd, em.getScene(), itemData, pos, num, gp);
+                        for (var j : items) {
+                            if (j.getItemId() == id) {
+                                j.setCount(j.getCount() + amount);
+                                flag = false;
+                                break;
+                            }
+                        }
+                        if (flag) items.add(new GameItem(id, amount));
+                    }
+                    break;
+                }
+            }
+        } else if (dropData.getRandomType() == 1) {
+            for (var i : dropData.getDropVec()) {
+                int id = i.getId();
+                if (id == 0) continue;
+                if (rand.nextInt(10000) < i.getWeight()) {
+                    int amount = calculateDropAmount(i) * count;
+                    if (amount <= 0) continue;
+                    if (dropTable.containsKey(id)) {
+                        processDrop(dropTable.get(id), amount, items);
+                    } else {
+                        boolean flag = true;
+                        for (var j : items) {
+                            if (j.getItemId() == id) {
+                                j.setCount(j.getCount() + amount);
+                                flag = false;
+                                break;
+                            }
+                        }
+                        if (flag) items.add(new GameItem(id, amount));
+                    }
+                }
             }
         }
     }
 
-    public void callDrop(EntityMonster em) {
+    private int calculateDropAmount(DropItemData i) {
-        int id = em.getMonsterData().getId();
+        int amount;
-        if (getDropData().containsKey(id)) {
+        if (i.getCountRange().contains(";")) {
-            for (DropData dd : getDropData().get(id)) {
+            String[] ranges = i.getCountRange().split(";");
-                if (dd.isShare())
+            amount = rand.nextInt(Integer.parseInt(ranges[0]), Integer.parseInt(ranges[1]) + 1);
-                    processDrop(dd, em, null);
+        } else if (i.getCountRange().contains(".")) {
-                else {
+            double expectAmount = Double.parseDouble(i.getCountRange());
-                    for (Player gp : em.getScene().getPlayers()) {
+            amount = (int) expectAmount;
-                        processDrop(dd, em, gp);
+            if (rand.nextDouble() < expectAmount - amount) amount++;
+        } else {
+            amount = Integer.parseInt(i.getCountRange());
+        }
+        return amount;
+    }
+
+    /**
+     * @param share Whether other players in the scene could see the drop items.
+     */
+    private void dropItem(GameItem item, ActionReason reason, Player player, GameEntity bornFrom, boolean share) {
+        DropMaterialData drop = GameData.getDropMaterialDataMap().get(item.getItemId());
+        if ((drop != null && drop.isAutoPick()) || (item.getItemData().getItemType() == ItemType.ITEM_VIRTUAL && item.getItemData().getGadgetId() == 0)) {
+            giveItem(item, reason, player, share);
+        } else {
+            //TODO:solve share problem
+            player.getScene().addDropEntity(item, bornFrom, player, share);
         }
     }
+
+    private void dropItems(List<GameItem> items, ActionReason reason, GameEntity bornFrom, Player player, boolean share) {
+        for (var i : items) {
+            dropItem(i,reason,player,bornFrom,share);
         }
     }
+
+    private void giveItem(GameItem item, ActionReason reason, Player player, boolean share) {
+        if (share) {
+            for (var p : player.getScene().getPlayers()) {
+                p.getInventory().addItem(item, reason);
+                p.sendPacket(new PacketDropHintNotify(item.getItemId(), player.getPosition().toProto()));
             }
+        } else {
+            player.getInventory().addItem(item, reason);
+            player.sendPacket(new PacketDropHintNotify(item.getItemId(), player.getPosition().toProto()));
+        }
+    }
+
+    private void giveItems(List<GameItem> items, ActionReason reason, Player player, boolean share) {
+        //don't know whether we need PacketDropHintNotify.
+        if (share) {
+            for (var p : player.getScene().getPlayers()) {
+                p.getInventory().addItems(items, reason);
+                p.sendPacket(new PacketDropHintNotify(items, player.getPosition().toProto()));
+            }
+        } else {
+            player.getInventory().addItems(items, reason);
+            player.sendPacket(new PacketDropHintNotify(items, player.getPosition().toProto()));
+        }
+    }
+
 }

src/main/java/emu/grasscutter/game/drop/DropSystemLegacy.java

@@ -0,0 +1,106 @@
+package emu.grasscutter.game.drop;
+
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.data.DataLoader;
+import emu.grasscutter.data.GameData;
+import emu.grasscutter.data.excels.ItemData;
+import emu.grasscutter.game.entity.EntityItem;
+import emu.grasscutter.game.entity.EntityMonster;
+import emu.grasscutter.game.inventory.GameItem;
+import emu.grasscutter.game.inventory.ItemType;
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.props.ActionReason;
+import emu.grasscutter.game.world.Scene;
+import emu.grasscutter.server.game.BaseGameSystem;
+import emu.grasscutter.server.game.GameServer;
+import emu.grasscutter.utils.Position;
+import emu.grasscutter.utils.Utils;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+
+import java.util.List;
+
+public class DropSystemLegacy extends BaseGameSystem {
+    private final Int2ObjectMap<List<DropData>> dropData;
+
+    public DropSystemLegacy(GameServer server) {
+        super(server);
+        this.dropData = new Int2ObjectOpenHashMap<>();
+        this.load();
+    }
+
+    public Int2ObjectMap<List<DropData>> getDropData() {
+        return dropData;
+    }
+
+    public synchronized void load() {
+        getDropData().clear();
+        try {
+            List<DropInfo> banners = DataLoader.loadList("Drop.json", DropInfo.class);
+            if (banners.size() > 0) {
+                for (DropInfo di : banners) {
+                    getDropData().put(di.getMonsterId(), di.getDropDataList());
+                }
+                Grasscutter.getLogger().debug("Drop data successfully loaded.");
+            } else {
+                Grasscutter.getLogger().error("Unable to load drop data. Drop data size is 0.");
+            }
+        } catch (Exception e) {
+            Grasscutter.getLogger().error("Unable to load drop data.", e);
+        }
+    }
+    private void addDropEntity(DropData dd, Scene dropScene, ItemData itemData, Position pos, int num, Player target) {
+        if (!dd.isGive() && (itemData.getItemType() != ItemType.ITEM_VIRTUAL || itemData.getGadgetId() != 0)) {
+            EntityItem entity = new EntityItem(dropScene, target, itemData, pos, num, dd.isShare());
+            if (!dd.isShare())
+                dropScene.addEntityToSingleClient(target, entity);
+            else
+                dropScene.addEntity(entity);
+        } else {
+            if (target != null) {
+                target.getInventory().addItem(new GameItem(itemData, num), ActionReason.SubfieldDrop, true);
+            } else {
+                // target is null if items will be added are shared. no one could pick it up because of the combination(give + shared)
+                // so it will be sent to all players' inventories directly.
+                dropScene.getPlayers().forEach(x -> x.getInventory().addItem(new GameItem(itemData, num), ActionReason.SubfieldDrop, true));
+            }
+        }
+    }
+
+    private void processDrop(DropData dd, EntityMonster em, Player gp) {
+        int target = Utils.randomRange(1, 10000);
+        if (target >= dd.getMinWeight() && target < dd.getMaxWeight()) {
+            ItemData itemData = GameData.getItemDataMap().get(dd.getItemId());
+            int num = Utils.randomRange(dd.getMinCount(), dd.getMaxCount());
+
+            if (itemData == null) {
+                return;
+            }
+            if (itemData.isEquip()) {
+                for (int i = 0; i < num; i++) {
+                    float range = (2.5f + (.05f * num));
+                    Position pos = em.getPosition().nearby2d(range).addY(3f);
+                    addDropEntity(dd, em.getScene(), itemData, pos, num, gp);
+                }
+            } else {
+                Position pos = em.getPosition().clone().addY(3f);
+                addDropEntity(dd, em.getScene(), itemData, pos, num, gp);
+            }
+        }
+    }
+
+    public void callDrop(EntityMonster em) {
+        int id = em.getMonsterData().getId();
+        if (getDropData().containsKey(id)) {
+            for (DropData dd : getDropData().get(id)) {
+                if (dd.isShare())
+                    processDrop(dd, em, null);
+                else {
+                    for (Player gp : em.getScene().getPlayers()) {
+                        processDrop(dd, em, gp);
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/emu/grasscutter/game/dungeons/DungeonManager.java

@@ -82,9 +82,9 @@ public class DungeonManager {
         return LogicType.calculate(passConfigData.getLogicType(), finishedConditions);
     }
 
-    public int getLevelForMonster(int id) {
+    public int getLevelForMonster(int id, int monsterLevel) {
         //TODO should use levelConfigMap? and how?
-        return dungeonData.getShowLevel();
+        return Math.max(dungeonData.getShowLevel(), monsterLevel);
     }
 
     public boolean activateRespawnPoint(int pointId) {

src/main/java/emu/grasscutter/game/entity/EntityItem.java

@@ -22,6 +22,7 @@ import emu.grasscutter.net.proto.SceneEntityAiInfoOuterClass.SceneEntityAiInfo;
 import emu.grasscutter.net.proto.SceneEntityInfoOuterClass.SceneEntityInfo;
 import emu.grasscutter.net.proto.SceneGadgetInfoOuterClass.SceneGadgetInfo;
 import emu.grasscutter.net.proto.VectorOuterClass.Vector;
+import emu.grasscutter.server.packet.send.PacketDropHintNotify;
 import emu.grasscutter.server.packet.send.PacketGadgetInteractRsp;
 import emu.grasscutter.utils.Position;
 import emu.grasscutter.utils.ProtoHelper;
@@ -66,6 +67,7 @@ public class EntityItem extends EntityBaseGadget {
     @Override
     public void onInteract(Player player, GadgetInteractReq interactReq) {
         // check drop owner to avoid someone picked up item in others' world
+        //TODO:improve it
         if (!this.isShare()) {
             int dropOwner = (int) (this.getGuid() >> 32);
             if (dropOwner != player.getUid()) {
@@ -79,6 +81,7 @@ public class EntityItem extends EntityBaseGadget {
         // Add to inventory
         boolean success = player.getInventory().addItem(item, ActionReason.SubfieldDrop);
         if (success) {
+            player.sendPacket(new PacketDropHintNotify(item.getItemId(),getPosition().toProto()));
             if (!this.isShare()) { // not shared drop
                 player.sendPacket(new PacketGadgetInteractRsp(this, InteractType.INTERACT_TYPE_PICK_ITEM));
             } else {

src/main/java/emu/grasscutter/game/entity/EntityMonster.java

@@ -24,6 +24,7 @@ import emu.grasscutter.net.proto.SceneEntityInfoOuterClass.SceneEntityInfo;
 import emu.grasscutter.net.proto.SceneMonsterInfoOuterClass.SceneMonsterInfo;
 import emu.grasscutter.net.proto.SceneWeaponInfoOuterClass.SceneWeaponInfo;
 import emu.grasscutter.scripts.constants.EventType;
+import emu.grasscutter.scripts.data.SceneMonster;
 import emu.grasscutter.scripts.data.ScriptArgs;
 import emu.grasscutter.server.event.entity.EntityDamageEvent;
 import emu.grasscutter.utils.Position;
@@ -50,7 +51,7 @@ public class EntityMonster extends GameEntity {
     @Getter private int weaponEntityId;
     @Getter @Setter private int poseId;
     @Getter @Setter private int aiId = -1;
-
+    @Getter @Setter private SceneMonster metaMonster;
     public EntityMonster(Scene scene, MonsterData monsterData, Position pos, int level) {
         super(scene);
         this.id = getWorld().getNextEntityId(EntityIdType.MONSTER);

src/main/java/emu/grasscutter/game/entity/gadget/GadgetChest.java

@@ -1,10 +1,11 @@
 package emu.grasscutter.game.entity.gadget;
 
 import emu.grasscutter.Grasscutter;
+import emu.grasscutter.game.drop.DropSystem;
 import emu.grasscutter.game.entity.EntityGadget;
 import emu.grasscutter.game.entity.gadget.chest.BossChestInteractHandler;
 import emu.grasscutter.game.player.Player;
-import emu.grasscutter.game.props.LifeState;
+import emu.grasscutter.game.props.WatcherTriggerType;
 import emu.grasscutter.net.proto.BossChestInfoOuterClass.BossChestInfo;
 import emu.grasscutter.net.proto.GadgetInteractReqOuterClass.GadgetInteractReq;
 import emu.grasscutter.net.proto.InterOpTypeOuterClass.InterOpType;
@@ -13,8 +14,9 @@ import emu.grasscutter.net.proto.InteractTypeOuterClass.InteractType;
 import emu.grasscutter.net.proto.ResinCostTypeOuterClass;
 import emu.grasscutter.net.proto.SceneGadgetInfoOuterClass.SceneGadgetInfo;
 import emu.grasscutter.scripts.constants.ScriptGadgetState;
+import emu.grasscutter.scripts.data.SceneGadget;
 import emu.grasscutter.server.packet.send.PacketGadgetInteractRsp;
-import emu.grasscutter.server.packet.send.PacketLifeStateChangeNotify;
+import emu.grasscutter.server.packet.send.PacketWorldChestOpenNotify;
 
 public class GadgetChest extends GadgetContent {
 
@@ -22,7 +24,54 @@ public class GadgetChest extends GadgetContent {
         super(gadget);
     }
 
+    /**
+     * @return Whether we should remove the gadget.
+     */
     public boolean onInteract(Player player, GadgetInteractReq req) {
+        //If bigWorldScript enabled,use new drop system.
+        if (Grasscutter.getConfig().server.game.enableScriptInBigWorld) {
+            SceneGadget chest = getGadget().getMetaGadget();
+            DropSystem dropSystem = player.getServer().getDropSystem();
+            if (chest.boss_chest != null && chest.drop_tag != null) {
+                //Boss chest drop
+                //TODO:check for blossom chests
+                if (req.getOpType() == InterOpType.INTER_OP_TYPE_START) {
+                    //Two steps
+                    player.sendPacket(new PacketGadgetInteractRsp(getGadget(), InteractType.INTERACT_TYPE_OPEN_CHEST, InterOpType.INTER_OP_TYPE_START));
+                    return false;
+                }
+                //TODO:check for take_num.(some boss rewards can only be claimed once a week.). Handle boss respawn.
+                //TODO:should return Retcode.RET_RESIN_NOT_ENOUGH ?
+                if (player.getResinManager().useResin(chest.boss_chest.resin) && dropSystem.handleBossChestDrop(chest.drop_tag, player)) {
+                    //Is it correct?
+                    player.getBattlePassManager().triggerMission(WatcherTriggerType.TRIGGER_WORLD_BOSS_REWARD,chest.boss_chest.monster_config_id,1);
+                    getGadget().updateState(ScriptGadgetState.ChestOpened);
+                    player.sendPacket(new PacketGadgetInteractRsp(this.getGadget(), InteractTypeOuterClass.InteractType.INTERACT_TYPE_OPEN_CHEST, InterOpType.INTER_OP_TYPE_FINISH));
+                    return true;
+                }
+                //if failed,fallback to legacy drop system.
+            } else {
+                //Normal chest drop
+                //only the owner of the world can open chests.
+                if (player != player.getWorld().getHost()) return false;
+                boolean status = false;
+                if (chest.drop_tag != null) {
+                    status = dropSystem.handleChestDrop(chest.drop_tag, chest.level, getGadget());
+                } else if (chest.chest_drop_id != 0) {
+                    status = dropSystem.handleChestDrop(chest.chest_drop_id, chest.drop_count, getGadget());
+                }
+                if (status) {
+                    getGadget().updateState(ScriptGadgetState.ChestOpened);
+                    player.sendPacket(new PacketGadgetInteractRsp(getGadget(), InteractType.INTERACT_TYPE_OPEN_CHEST, InterOpType.INTER_OP_TYPE_FINISH));
+                    player.sendPacket(new PacketWorldChestOpenNotify(getGadget().getGroupId(), player.getSceneId(), chest.config_id));
+                    return true;
+                }
+                //if failed,fallback to legacy drop system.
+            }
+            Grasscutter.getLogger().warn("Can not solve chest drop: chest_drop_id = {} , drop_tag = {}.Fallback to legacy drop system.", chest.chest_drop_id, chest.drop_tag);
+        }
+
+        //Legacy chest drop system
         var chestInteractHandlerMap = getGadget().getScene().getWorld().getServer().getWorldDataSystem().getChestInteractHandlerMap();
         var handler = chestInteractHandlerMap.get(getGadget().getGadgetData().getJsonName());
         if (handler == null) {
@@ -46,7 +95,7 @@ public class GadgetChest extends GadgetContent {
             }
 
             getGadget().updateState(ScriptGadgetState.ChestOpened);
-            player.sendPacket(new PacketGadgetInteractRsp(this.getGadget(), InteractTypeOuterClass.InteractType.INTERACT_TYPE_OPEN_CHEST));
+            player.sendPacket(new PacketGadgetInteractRsp(this.getGadget(), InteractTypeOuterClass.InteractType.INTERACT_TYPE_OPEN_CHEST, InterOpType.INTER_OP_TYPE_FINISH));
 
             return true;
         }

src/main/java/emu/grasscutter/game/inventory/Inventory.java

@@ -143,7 +143,7 @@ public class Inventory extends BasePlayerManager implements Iterable<GameItem> {
             if (item.getItemId() == 0) continue;
             GameItem result = null;
             try {
-                // putItem might throws exception
+                // putItem might throw exception
                 // ignore that exception and continue
                 result = putItem(item);
             } catch (Exception e) {
@@ -158,7 +158,7 @@ public class Inventory extends BasePlayerManager implements Iterable<GameItem> {
             return;
         }
         if (reason != null) {
-            getPlayer().sendPacket(new PacketItemAddHintNotify(changedItems, reason));
+            getPlayer().sendPacket(new PacketItemAddHintNotify(items, reason));
         }
         getPlayer().sendPacket(new PacketStoreItemChangeNotify(changedItems));
     }

src/main/java/emu/grasscutter/game/world/Scene.java

@@ -13,12 +13,14 @@ import emu.grasscutter.game.dungeons.challenge.WorldChallenge;
 import emu.grasscutter.game.dungeons.enums.DungeonPassConditionType;
 import emu.grasscutter.game.entity.*;
 import emu.grasscutter.game.entity.gadget.GadgetWorktop;
+import emu.grasscutter.game.inventory.GameItem;
 import emu.grasscutter.game.managers.blossom.BlossomManager;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.game.player.TeamInfo;
 import emu.grasscutter.game.props.*;
 import emu.grasscutter.game.quest.QuestGroupSuite;
 import emu.grasscutter.game.world.data.TeleportProperties;
+import emu.grasscutter.game.world.SpawnDataEntry.GridBlockId;
 import emu.grasscutter.net.packet.BasePacket;
 import emu.grasscutter.net.proto.AttackResultOuterClass.AttackResult;
 import emu.grasscutter.net.proto.EnterTypeOuterClass;
@@ -63,6 +65,8 @@ public class Scene {
     private Set<SpawnDataEntry.GridBlockId> loadedGridBlocks;
     @Getter @Setter private boolean dontDestroyWhenEmpty;
     @Getter private final SceneScriptManager scriptManager;
+
+    @Getter @Setter private int autoCloseTime;
     @Getter @Setter private WorldChallenge challenge;
     @Getter private List<DungeonSettleListener> dungeonSettleListeners;
     @Getter @Setter private int prevScene; // Id of the previous scene
@@ -366,7 +370,10 @@ public class Scene {
 
         // Reward drop
         if (target instanceof EntityMonster && this.getSceneType() != SceneType.SCENE_DUNGEON) {
-            getWorld().getServer().getDropSystem().callDrop((EntityMonster) target);
+            if (!getWorld().getServer().getDropSystem().handleMonsterDrop((EntityMonster) target)) {
+                Grasscutter.getLogger().warn("Can not solve monster drop: drop_id = {} , drop_tag = {}.Fallback to legacy drop system.", ((EntityMonster) target).getMetaMonster().drop_id, ((EntityMonster) target).getMetaMonster().drop_tag);
+                getWorld().getServer().getDropSystemLegacy().callDrop((EntityMonster) target);
+            }
         }
 
         // Remove entity from world
@@ -510,8 +517,7 @@ public class Scene {
     public synchronized void checkSpawns() {
         Set<SpawnDataEntry.GridBlockId> loadedGridBlocks = new HashSet<>();
         for (Player player : this.getPlayers()) {
-            for (SpawnDataEntry.GridBlockId block : SpawnDataEntry.GridBlockId.getAdjacentGridBlockIds(player.getSceneId(), player.getPosition()))
+            Collections.addAll(loadedGridBlocks, GridBlockId.getAdjacentGridBlockIds(player.getSceneId(), player.getPosition()));
-                loadedGridBlocks.add(block);
         }
         if (this.loadedGridBlocks.containsAll(loadedGridBlocks)) {  // Don't recalculate static spawns if nothing has changed
             return;
@@ -821,16 +827,34 @@ public class Scene {
         if (itemData.isEquip()) {
             float range = (1.5f + (.05f * amount));
             for (int i = 0; i < amount; i++) {
-                Position pos = bornForm.getPosition().nearby2d(range).addZ(.9f);  // Why Z?
+                Position pos = bornForm.getPosition().nearby2d(range).addY(1.5f);
                 EntityItem entity = new EntityItem(this, null, itemData, pos, 1);
                 addEntity(entity);
             }
         } else {
-            EntityItem entity = new EntityItem(this, null, itemData, bornForm.getPosition().clone().addZ(.9f), amount);  // Why Z?
+            EntityItem entity = new EntityItem(this, null, itemData, bornForm.getPosition().clone().addY(1.5f), amount);
             addEntity(entity);
         }
     }
 
+    public void addDropEntity(GameItem item, GameEntity bornForm, Player player, boolean share) {
+        //TODO:optimize EntityItem.java. Maybe we should make other players can't see the ItemEntity.
+        ItemData itemData = GameData.getItemDataMap().get(item.getItemId());
+        if (itemData == null) return;
+        if (itemData.isEquip()) {
+            float range = (1.5f + (.05f * item.getCount()));
+            for (int j = 0; j < item.getCount(); j++) {
+                Position pos = bornForm.getPosition().nearby2d(range).addY(1.5f);
+                EntityItem entity = new EntityItem(this, player, itemData, pos, item.getCount(), share);
+                addEntity(entity);
+            }
+        } else {
+            EntityItem entity = new EntityItem(this, player, itemData, bornForm.getPosition().clone().addY(1.5f), item.getCount(), share);
+            addEntity(entity);
+        }
+
+    }
+
     public void loadNpcForPlayerEnter(Player player) {
         this.npcBornEntrySet.addAll(loadNpcForPlayer(player));
     }

src/main/java/emu/grasscutter/game/world/WorldDataSystem.java

@@ -51,7 +51,7 @@ public class WorldDataSystem extends BaseGameSystem {
     public Map<String, ChestInteractHandler> getChestInteractHandlerMap() {
         return chestInteractHandlerMap;
     }
-
+    @Deprecated
     public RewardPreviewData getRewardByBossId(int monsterId) {
         var investigationMonsterData = GameData.getInvestigationMonsterDataMap().values().parallelStream()
                 .filter(imd -> imd.getMonsterIdList() != null && !imd.getMonsterIdList().isEmpty())
@@ -80,7 +80,7 @@ public class WorldDataSystem extends BaseGameSystem {
         WorldLevelData worldLevelData = GameData.getWorldLevelDataMap().get(world.getWorldLevel());
 
         if (worldLevelData != null) {
-            level = worldLevelData.getMonsterLevel();
+            level = Math.max(level, worldLevelData.getMonsterLevel());
         }
         return level;
     }

src/main/java/emu/grasscutter/net/packet/PacketOpcodes.java

@@ -1800,7 +1800,7 @@ public class PacketOpcodes {
     public static final int Unk3000_FIPHHGCJIMO = 23678;
     public static final int Unk3000_FPDBJJJLKEP = 6103;
     public static final int Unk3000_GCBMILHPIKA = 4659;
-    public static final int Unk3000_GDMEIKLAMIB = 3295;
+    public static final int WorldChestOpenNotify = 3295;
     public static final int Unk3000_GMLAHHCDKOI = 841;
     public static final int Unk3000_GNLFOLGMEPN = 21208;
     public static final int Unk3000_HBIPKOBMGGD = 5995;

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

@@ -546,12 +546,12 @@ public class SceneScriptManager {
         int level = monster.level;
 
         if (getScene().getDungeonManager() != null) {
-            level = getScene().getDungeonManager().getLevelForMonster(monster.config_id);
+            level = getScene().getDungeonManager().getLevelForMonster(monster.config_id, level);
-        } else if (getScene().getWorld().getWorldLevel() > 0) {
+        } else {
             WorldLevelData worldLevelData = GameData.getWorldLevelDataMap().get(getScene().getWorld().getWorldLevel());
 
             if (worldLevelData != null) {
-                level = worldLevelData.getMonsterLevel();
+                level = Math.max(level, worldLevelData.getMonsterLevel());
             }
         }
 
@@ -562,6 +562,7 @@ public class SceneScriptManager {
         entity.setBlockId(blockId);
         entity.setConfigId(monster.config_id);
         entity.setPoseId(monster.pose_id);
+        entity.setMetaMonster(monster);
 
         this.getScriptMonsterSpawnService()
                 .onMonsterCreatedListener.forEach(action -> action.onNotify(entity));

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

@@ -6,12 +6,27 @@ import lombok.ToString;
 @ToString
 @Setter
 public class SceneGadget extends SceneObject{
+    public int config_id;
     public int gadget_id;
+    public int level;
+    public int chest_drop_id;
+    public int drop_count;
+    public String drop_tag;
+    boolean showcutscene;
+    boolean persistence;
     public int state;
+
     public int point_type;
+    public int owner;
     public SceneBossChest boss_chest;
     public int interact_id;
+    /**
+     * Note: this field indicates whether the gadget should disappear permanently.
+     * For example, if isOneOff=true, like most chests, it will disappear permanently after interacted.
+     * If isOneOff=false, like investigation points, it will disappear temporarily, and appear again in next big world resource refresh routine.
+     */
     public boolean isOneoff;
+    public int area_id;
     public int draft_id;
     public int route_id;
     public boolean start_route = true;

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

@@ -6,8 +6,11 @@ import lombok.ToString;
 @ToString
 @Setter
 public class SceneMonster extends SceneObject{
+	public int config_id;
     public int monster_id;
 	public int pose_id;
+    public int level;
 	public int drop_id;
 	public boolean disableWander;
+    public String drop_tag;
 }

src/main/java/emu/grasscutter/server/game/GameServer.java

@@ -9,6 +9,7 @@ import emu.grasscutter.game.chat.ChatSystem;
 import emu.grasscutter.game.chat.ChatSystemHandler;
 import emu.grasscutter.game.combine.CombineManger;
 import emu.grasscutter.game.drop.DropSystem;
+import emu.grasscutter.game.drop.DropSystemLegacy;
 import emu.grasscutter.game.dungeons.DungeonSystem;
 import emu.grasscutter.game.dungeons.challenge.DungeonChallenge;
 import emu.grasscutter.game.expedition.ExpeditionSystem;
@@ -28,10 +29,10 @@ import emu.grasscutter.game.world.World;
 import emu.grasscutter.game.world.WorldDataSystem;
 import emu.grasscutter.net.packet.PacketHandler;
 import emu.grasscutter.net.proto.SocialDetailOuterClass.SocialDetail;
-import emu.grasscutter.server.event.types.ServerEvent;
 import emu.grasscutter.server.event.game.ServerTickEvent;
 import emu.grasscutter.server.event.internal.ServerStartEvent;
 import emu.grasscutter.server.event.internal.ServerStopEvent;
+import emu.grasscutter.server.event.types.ServerEvent;
 import emu.grasscutter.server.scheduler.ServerTaskScheduler;
 import emu.grasscutter.task.TaskMap;
 import kcp.highway.ChannelConfig;
@@ -44,7 +45,7 @@ import java.time.OffsetDateTime;
 import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 
-import static emu.grasscutter.config.Configuration.*;
+import static emu.grasscutter.config.Configuration.GAME_INFO;
 import static emu.grasscutter.utils.Language.translate;
 
 @Getter
@@ -63,6 +64,7 @@ public final class GameServer extends KcpServer {
     private final DungeonSystem dungeonSystem;
     private final ExpeditionSystem expeditionSystem;
     private final DropSystem dropSystem;
+    private final DropSystemLegacy dropSystemLegacy;
     private final WorldDataSystem worldDataSystem;
     private final BattlePassSystem battlePassSystem;
     private final CombineManger combineSystem;
@@ -115,6 +117,7 @@ public final class GameServer extends KcpServer {
         this.multiplayerSystem = new MultiplayerSystem(this);
         this.dungeonSystem = new DungeonSystem(this);
         this.dropSystem = new DropSystem(this);
+        this.dropSystemLegacy = new DropSystemLegacy(this);
         this.expeditionSystem = new ExpeditionSystem(this);
         this.combineSystem = new CombineManger(this);
         this.towerSystem = new TowerSystem(this);

src/main/java/emu/grasscutter/server/packet/send/PacketDropHintNotify.java

@@ -0,0 +1,25 @@
+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.game.inventory.GameItem;
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.DropHintNotifyOuterClass.DropHintNotify;
+import emu.grasscutter.net.proto.VectorOuterClass.Vector;
+
+public class PacketDropHintNotify extends BasePacket {
+    public PacketDropHintNotify(int itemId, Vector position) {
+        super(PacketOpcodes.DropHintNotify);
+        var proto = DropHintNotify.newBuilder()
+            .addItemIdList(itemId)
+            .setPosition(position);
+        setData(proto.build());
+    }
+
+    public PacketDropHintNotify(Iterable<GameItem> items, Vector position) {
+        super(PacketOpcodes.DropHintNotify);
+        var proto = DropHintNotify.newBuilder();
+        items.forEach(i -> proto.addItemIdList(i.getItemId()));
+        proto.setPosition(position);
+        setData(proto.build());
+    }
+}

src/main/java/emu/grasscutter/server/packet/send/PacketWorldChestOpenNotify.java

@@ -0,0 +1,17 @@
+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.WorldChestOpenNotifyOuterClass.WorldChestOpenNotify;
+
+public class PacketWorldChestOpenNotify extends BasePacket {
+    public PacketWorldChestOpenNotify(int groupId,int sceneId,int configId){
+        super(PacketOpcodes.WorldChestOpenNotify);
+        WorldChestOpenNotify proto= WorldChestOpenNotify.newBuilder()
+            .setGroupId(groupId)
+            .setSceneId(sceneId)
+            .setConfigId(configId)
+            .build();
+        setData(proto);
+    }
+}

src/main/java/emu/grasscutter/utils/FileUtils.java

@@ -8,7 +8,10 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.net.URISyntaxException;
 import java.nio.charset.StandardCharsets;
-import java.nio.file.*;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -129,7 +132,9 @@ public final class FileUtils {
     }
 
     public static Path getExcelPath(String filename) {
-        return getTsjJsonTsv(RESOURCES_PATH.resolve("ExcelBinOutput"), filename);
+        Path p = getTsjJsonTsv(RESOURCES_PATH.resolve("Server"), filename);
+        if (Files.exists(p)) return p;
+        else return getTsjJsonTsv(RESOURCES_PATH.resolve("ExcelBinOutput"), filename);
     }
 
     // Gets path of a resource.