Merge branch 'development' into unstable

# Conflicts:
#	src/generated/main/java/emu/grasscutter/net/proto/ResinChangeNotifyOuterClass.java
#	src/main/java/emu/grasscutter/game/managers/ResinManager.java
#	src/main/java/emu/grasscutter/game/player/Player.java
#	src/main/java/emu/grasscutter/game/props/ItemUseAction/ItemUseAddItem.java
#	src/main/java/emu/grasscutter/server/packet/send/PacketResinChangeNotify.java

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,7 +1,7 @@
 ## Description
 
 Please carefully read the [Contributing note](https://github.com/Grasscutters/Grasscutter/blob/stable/CONTRIBUTING.md) and [Code of conduct](https://github.com/Grasscutters/Grasscutter/blob/development/CODE_OF_CONDUCT.md) before making any pull requests.
-And, **Do not make a pull request to merge into stable unless it is a hotfix. Use the development branch instead.**
+
 ## Issues fixed by this PR
 
 <!--- Put the links of issues that may be fixed by this PR here (if any). -->
@@ -19,4 +19,4 @@ And, **Do not make a pull request to merge into stable unless it is a hotfix. Us
 - [ ] My code follows the style guidelines of this project
 - [ ] My pull request is unique and no other pull requests have been opened for these changes
 - [ ] I have read the [Contributing note](https://github.com/Grasscutters/Grasscutter/blob/stable/CONTRIBUTING.md) and [Code of conduct](https://github.com/Grasscutters/Grasscutter/blob/development/CODE_OF_CONDUCT.md)
-- [ ] I am responsible for any copyright issues with my code if it occurs in the future.
+- [ ] I am responsible for any copyright issues with my code if it occurs in the future.

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

@@ -0,0 +1,475 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: BuyResinReq.proto
+
+package emu.grasscutter.net.proto;
+
+public final class BuyResinReqOuterClass {
+  private BuyResinReqOuterClass() {}
+  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 BuyResinReqOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:BuyResinReq)
+      com.google.protobuf.MessageOrBuilder {
+  }
+  /**
+   * <pre>
+   * Name: NIBFJEFHMIM
+   * CmdId: 630
+   * </pre>
+   *
+   * Protobuf type {@code BuyResinReq}
+   */
+  public static final class BuyResinReq extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:BuyResinReq)
+      BuyResinReqOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use BuyResinReq.newBuilder() to construct.
+    private BuyResinReq(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private BuyResinReq() {
+    }
+
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(
+        UnusedPrivateParameter unused) {
+      return new BuyResinReq();
+    }
+
+    @java.lang.Override
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+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private BuyResinReq(
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+        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 =
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+        makeExtensionsImmutable();
+      }
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+    }
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+
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+      return true;
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+
+    @java.lang.Override
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+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq 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.BuyResinReqOuterClass.BuyResinReq parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq 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.BuyResinReqOuterClass.BuyResinReq parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq 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.BuyResinReqOuterClass.BuyResinReq parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq 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.BuyResinReqOuterClass.BuyResinReq parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq 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.BuyResinReqOuterClass.BuyResinReq 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>
+     * Name: NIBFJEFHMIM
+     * CmdId: 630
+     * </pre>
+     *
+     * Protobuf type {@code BuyResinReq}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:BuyResinReq)
+        emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReqOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return emu.grasscutter.net.proto.BuyResinReqOuterClass.internal_static_BuyResinReq_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return emu.grasscutter.net.proto.BuyResinReqOuterClass.internal_static_BuyResinReq_fieldAccessorTable
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+                emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq.class, emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq.Builder.class);
+      }
+
+      // Construct using emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
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+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
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+      @java.lang.Override
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+      public com.google.protobuf.Descriptors.Descriptor
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+        return emu.grasscutter.net.proto.BuyResinReqOuterClass.internal_static_BuyResinReq_descriptor;
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq getDefaultInstanceForType() {
+        return emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq build() {
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+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq buildPartial() {
+        emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq result = new emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq(this);
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return super.clone();
+      }
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+      public Builder setField(
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+          java.lang.Object value) {
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+      @java.lang.Override
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+          com.google.protobuf.Descriptors.FieldDescriptor field) {
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+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
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+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
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+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
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+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
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+          return mergeFrom((emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq other) {
+        if (other == emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq.getDefaultInstance()) return this;
+        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.BuyResinReqOuterClass.BuyResinReq parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
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+      @java.lang.Override
+      public final Builder setUnknownFields(
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+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:BuyResinReq)
+    }
+
+    // @@protoc_insertion_point(class_scope:BuyResinReq)
+    private static final emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq DEFAULT_INSTANCE;
+    static {
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+    }
+
+    public static emu.grasscutter.net.proto.BuyResinReqOuterClass.BuyResinReq getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<BuyResinReq>
+        PARSER = new com.google.protobuf.AbstractParser<BuyResinReq>() {
+      @java.lang.Override
+      public BuyResinReq parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new BuyResinReq(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<BuyResinReq> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<BuyResinReq> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
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+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_BuyResinReq_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_BuyResinReq_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
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+  static {
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+}

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

@@ -0,0 +1,616 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: BuyResinRsp.proto
+
+package emu.grasscutter.net.proto;
+
+public final class BuyResinRspOuterClass {
+  private BuyResinRspOuterClass() {}
+  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 BuyResinRspOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:BuyResinRsp)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>int32 retcode = 9;</code>
+     * @return The retcode.
+     */
+    int getRetcode();
+
+    /**
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+     * @return The curValue.
+     */
+    int getCurValue();
+  }
+  /**
+   * <pre>
+   * Name: PFLBPGOHFKJ
+   * CmdId: 687
+   * </pre>
+   *
+   * Protobuf type {@code BuyResinRsp}
+   */
+  public static final class BuyResinRsp extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:BuyResinRsp)
+      BuyResinRspOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use BuyResinRsp.newBuilder() to construct.
+    private BuyResinRsp(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private BuyResinRsp() {
+    }
+
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(
+        UnusedPrivateParameter unused) {
+      return new BuyResinRsp();
+    }
+
+    @java.lang.Override
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+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private BuyResinRsp(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
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+
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+    @java.lang.Override
+    public final boolean isInitialized() {
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+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
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+    public void writeTo(com.google.protobuf.CodedOutputStream output)
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+      }
+      if (retcode_ != 0) {
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+      }
+      unknownFields.writeTo(output);
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+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
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+          .computeInt32Size(9, retcode_);
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+      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.BuyResinRspOuterClass.BuyResinRsp)) {
+        return super.equals(obj);
+      }
+      emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp other = (emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp) obj;
+
+      if (getRetcode()
+          != other.getRetcode()) return false;
+      if (getCurValue()
+          != other.getCurValue()) 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) + RETCODE_FIELD_NUMBER;
+      hash = (53 * hash) + getRetcode();
+      hash = (37 * hash) + CUR_VALUE_FIELD_NUMBER;
+      hash = (53 * hash) + getCurValue();
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp 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.BuyResinRspOuterClass.BuyResinRsp parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp 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.BuyResinRspOuterClass.BuyResinRsp parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp 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.BuyResinRspOuterClass.BuyResinRsp parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp 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.BuyResinRspOuterClass.BuyResinRsp parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp 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.BuyResinRspOuterClass.BuyResinRsp 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>
+     * Name: PFLBPGOHFKJ
+     * CmdId: 687
+     * </pre>
+     *
+     * Protobuf type {@code BuyResinRsp}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:BuyResinRsp)
+        emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRspOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return emu.grasscutter.net.proto.BuyResinRspOuterClass.internal_static_BuyResinRsp_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return emu.grasscutter.net.proto.BuyResinRspOuterClass.internal_static_BuyResinRsp_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp.class, emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp.Builder.class);
+      }
+
+      // Construct using emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp.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();
+        retcode_ = 0;
+
+        curValue_ = 0;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return emu.grasscutter.net.proto.BuyResinRspOuterClass.internal_static_BuyResinRsp_descriptor;
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp getDefaultInstanceForType() {
+        return emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp build() {
+        emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp buildPartial() {
+        emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp result = new emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp(this);
+        result.retcode_ = retcode_;
+        result.curValue_ = curValue_;
+        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.BuyResinRspOuterClass.BuyResinRsp) {
+          return mergeFrom((emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp other) {
+        if (other == emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp.getDefaultInstance()) return this;
+        if (other.getRetcode() != 0) {
+          setRetcode(other.getRetcode());
+        }
+        if (other.getCurValue() != 0) {
+          setCurValue(other.getCurValue());
+        }
+        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.BuyResinRspOuterClass.BuyResinRsp parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private int retcode_ ;
+      /**
+       * <code>int32 retcode = 9;</code>
+       * @return The retcode.
+       */
+      @java.lang.Override
+      public int getRetcode() {
+        return retcode_;
+      }
+      /**
+       * <code>int32 retcode = 9;</code>
+       * @param value The retcode to set.
+       * @return This builder for chaining.
+       */
+      public Builder setRetcode(int value) {
+        
+        retcode_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int32 retcode = 9;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearRetcode() {
+        
+        retcode_ = 0;
+        onChanged();
+        return this;
+      }
+
+      private int curValue_ ;
+      /**
+       * <code>uint32 cur_value = 3;</code>
+       * @return The curValue.
+       */
+      @java.lang.Override
+      public int getCurValue() {
+        return curValue_;
+      }
+      /**
+       * <code>uint32 cur_value = 3;</code>
+       * @param value The curValue to set.
+       * @return This builder for chaining.
+       */
+      public Builder setCurValue(int value) {
+        
+        curValue_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>uint32 cur_value = 3;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearCurValue() {
+        
+        curValue_ = 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:BuyResinRsp)
+    }
+
+    // @@protoc_insertion_point(class_scope:BuyResinRsp)
+    private static final emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp();
+    }
+
+    public static emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<BuyResinRsp>
+        PARSER = new com.google.protobuf.AbstractParser<BuyResinRsp>() {
+      @java.lang.Override
+      public BuyResinRsp parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new BuyResinRsp(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<BuyResinRsp> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<BuyResinRsp> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public emu.grasscutter.net.proto.BuyResinRspOuterClass.BuyResinRsp getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_BuyResinRsp_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_BuyResinRsp_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\021BuyResinRsp.proto\"1\n\013BuyResinRsp\022\017\n\007re" +
+      "tcode\030\t \001(\005\022\021\n\tcur_value\030\003 \001(\rB\033\n\031emu.gr" +
+      "asscutter.net.protob\006proto3"
+    };
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        });
+    internal_static_BuyResinRsp_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_BuyResinRsp_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_BuyResinRsp_descriptor,
+        new java.lang.String[] { "Retcode", "CurValue", });
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

src/main/java/emu/grasscutter/game/managers/ResinManager.java

@@ -1,154 +1,179 @@
-package emu.grasscutter.game.managers;
+package emu.grasscutter.game.managers;
-
+
-import static emu.grasscutter.config.Configuration.GAME_OPTIONS;
+import emu.grasscutter.game.inventory.GameItem;
-
+import emu.grasscutter.game.player.BasePlayerManager;
-import emu.grasscutter.game.player.BasePlayerManager;
+import emu.grasscutter.game.player.Player;
-import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.props.ActionReason;
-import emu.grasscutter.game.props.PlayerProperty;
+import emu.grasscutter.game.props.PlayerProperty;
-import emu.grasscutter.game.props.WatcherTriggerType;
+import emu.grasscutter.game.props.WatcherTriggerType;
-import emu.grasscutter.server.packet.send.PacketResinChangeNotify;
+import emu.grasscutter.net.proto.RetcodeOuterClass;
-import emu.grasscutter.utils.Utils;
+import emu.grasscutter.server.packet.send.PacketItemAddHintNotify;
-
+import emu.grasscutter.server.packet.send.PacketResinChangeNotify;
-public class ResinManager extends BasePlayerManager {
+import emu.grasscutter.utils.Utils;
-
+
-    public ResinManager(Player player) {
+import static emu.grasscutter.config.Configuration.GAME_OPTIONS;
-        super(player);
+
-    }
+public class ResinManager extends BasePlayerManager {
-
+    public static final int MAX_RESIN_BUYING_COUNT = 6;
-    /********************
+    public static final int AMOUNT_TO_ADD = 60;
-     * Change resin.
+    public static final int[] HCOIN_NUM_TO_BUY_RESIN = new int[]{50, 100, 100, 150, 200, 200};
-     ********************/
+
-    public synchronized boolean useResin(int amount) {
+    public ResinManager(Player player) {
-        // Check if resin enabled.
+        super(player);
-        if (!GAME_OPTIONS.resinOptions.resinUsage) {
+    }
-            return true;
+
-        }
+    /********************
-
+     * Change resin.
-        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
+     ********************/
-
+    public synchronized boolean useResin(int amount) {
-        // Check if the player has sufficient resin.
+        // Check if resin enabled.
-        if (currentResin < amount) {
+        if (!GAME_OPTIONS.resinOptions.resinUsage) {
-            return false;
+            return true;
-        }
+        }
-
+
-        // Deduct the resin from the player.
+        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
-        int newResin = currentResin - amount;
+
-        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
+        // Check if the player has sufficient resin.
-
+        if (currentResin < amount) {
-        // Check if this has taken the player under the recharge cap,
+            return false;
-        // starting the recharging process.
+        }
-        if (this.player.getNextResinRefresh() == 0 && newResin < GAME_OPTIONS.resinOptions.cap) {
+
-            int currentTime = Utils.getCurrentSeconds();
+        // Deduct the resin from the player.
-            this.player.setNextResinRefresh(currentTime + GAME_OPTIONS.resinOptions.rechargeTime);
+        int newResin = currentResin - amount;
-        }
+        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
-
+
-        // Send packets.
+        // Check if this has taken the player under the recharge cap,
-        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+        // starting the recharging process.
-
+        if (this.player.getNextResinRefresh() == 0 && newResin < GAME_OPTIONS.resinOptions.cap) {
-        // Battle Pass trigger
+            int currentTime = Utils.getCurrentSeconds();
-        this.player
+            this.player.setNextResinRefresh(currentTime + GAME_OPTIONS.resinOptions.rechargeTime);
-                .getBattlePassManager()
+        }
-                .triggerMission(
+
-                        WatcherTriggerType.TRIGGER_COST_MATERIAL, 106, amount); // Resin item id = 106
+        // Send packets.
-
+        this.player.sendPacket(new PacketResinChangeNotify(this.player));
-        return true;
+
-    }
+        // Battle Pass trigger
-
+        this.player
-    public synchronized boolean useCondensedResin(int amount) {
+                .getBattlePassManager()
-        // Don't deduct if resin disabled.
+                .triggerMission(
-        if (!GAME_OPTIONS.resinOptions.resinUsage) return true;
+                        WatcherTriggerType.TRIGGER_COST_MATERIAL, 106, amount); // Resin item id = 106
-        return this.player.getInventory().payItem(220007, amount);
+
-    }
+        return true;
-
+    }
-    public synchronized void addResin(int amount) {
+
-        // Check if resin enabled.
+    public synchronized boolean useCondensedResin(int amount) {
-        if (!GAME_OPTIONS.resinOptions.resinUsage) {
+        // Don't deduct if resin disabled.
-            return;
+        if (!GAME_OPTIONS.resinOptions.resinUsage) return true;
-        }
+        return this.player.getInventory().payItem(220007, amount);
-
+    }
-        // Add resin.
+
-        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
+    public synchronized void addResin(int amount) {
-        int newResin = currentResin + amount;
+        // Check if resin enabled.
-        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
+        if (!GAME_OPTIONS.resinOptions.resinUsage) {
-
+            return;
-        // Stop recharging if player is now at or over the cap.
+        }
-        if (newResin >= GAME_OPTIONS.resinOptions.cap) {
+
-            this.player.setNextResinRefresh(0);
+        // Add resin.
-        }
+        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
-
+        int newResin = currentResin + amount;
-        // Send packets.
+        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
-        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+
-    }
+        // Stop recharging if player is now at or over the cap.
-
+        if (newResin >= GAME_OPTIONS.resinOptions.cap) {
-    /********************
+            this.player.setNextResinRefresh(0);
-     * Recharge resin.
+        }
-     ********************/
+
-    public synchronized void rechargeResin() {
+        // Send packets.
-        // Check if resin enabled.
+        this.player.sendPacket(new PacketResinChangeNotify(this.player));
-        if (!GAME_OPTIONS.resinOptions.resinUsage) {
+    }
-            return;
+
-        }
+    /********************
-
+     * Recharge resin.
-        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
+     ********************/
-        int currentTime = Utils.getCurrentSeconds();
+    public synchronized void rechargeResin() {
-
+        // Check if resin enabled.
-        // Make sure we are currently in "recharging mode".
+        if (!GAME_OPTIONS.resinOptions.resinUsage) {
-        // This is denoted by Player.nextResinRefresh being greater than 0.
+            return;
-        if (this.player.getNextResinRefresh() <= 0) {
+        }
-            return;
+
-        }
+        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
-
+        int currentTime = Utils.getCurrentSeconds();
-        // Determine if we actually need to recharge yet.
+
-        if (currentTime < this.player.getNextResinRefresh()) {
+        // Make sure we are currently in "recharging mode".
-            return;
+        // This is denoted by Player.nextResinRefresh being greater than 0.
-        }
+        if (this.player.getNextResinRefresh() <= 0) {
-
+            return;
-        // Calculate how much resin we need to refill and update player.
+        }
-        // Note that this can be more than one in case the player
+
-        // logged off with uncapped resin and is now logging in again.
+        // Determine if we actually need to recharge yet.
-        int recharge =
+        if (currentTime < this.player.getNextResinRefresh()) {
-                1
+            return;
-                        + ((currentTime - this.player.getNextResinRefresh())
+        }
-                                / GAME_OPTIONS.resinOptions.rechargeTime);
+
-        int newResin = Math.min(GAME_OPTIONS.resinOptions.cap, currentResin + recharge);
+        // Calculate how much resin we need to refill and update player.
-        int resinChange = newResin - currentResin;
+        // Note that this can be more than one in case the player
-
+        // logged off with uncapped resin and is now logging in again.
-        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
+        int recharge =
-
+                1
-        // Calculate next recharge time.
+                        + ((currentTime - this.player.getNextResinRefresh())
-        // Set to zero to disable recharge (because on/over cap.)
+                                / GAME_OPTIONS.resinOptions.rechargeTime);
-        if (newResin >= GAME_OPTIONS.resinOptions.cap) {
+        int newResin = Math.min(GAME_OPTIONS.resinOptions.cap, currentResin + recharge);
-            this.player.setNextResinRefresh(0);
+        int resinChange = newResin - currentResin;
-        } else {
+
-            int nextRecharge =
+        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
-                    this.player.getNextResinRefresh() + resinChange * GAME_OPTIONS.resinOptions.rechargeTime;
+
-            this.player.setNextResinRefresh(nextRecharge);
+        // Calculate next recharge time.
-        }
+        // Set to zero to disable recharge (because on/over cap.)
-
+        if (newResin >= GAME_OPTIONS.resinOptions.cap) {
-        // Send packets.
+            this.player.setNextResinRefresh(0);
-        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+        } else {
-    }
+            int nextRecharge =
-
+                    this.player.getNextResinRefresh() + resinChange * GAME_OPTIONS.resinOptions.rechargeTime;
-    /********************
+            this.player.setNextResinRefresh(nextRecharge);
-     * Player login.
+        }
-     ********************/
+
-    public synchronized void onPlayerLogin() {
+        // Send packets.
-        // If resin usage is disabled, set resin to cap.
+        this.player.sendPacket(new PacketResinChangeNotify(this.player));
-        if (!GAME_OPTIONS.resinOptions.resinUsage) {
+    }
-            this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, GAME_OPTIONS.resinOptions.cap);
+
-            this.player.setNextResinRefresh(0);
+    /********************
-        }
+     * Player login.
-
+     ********************/
-        // In case server administrators change the resin cap while players are capped,
+    public synchronized void onPlayerLogin() {
-        // we need to restart recharging here.
+        // If resin usage is disabled, set resin to cap.
-        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
+        if (!GAME_OPTIONS.resinOptions.resinUsage) {
-        int currentTime = Utils.getCurrentSeconds();
+            this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, GAME_OPTIONS.resinOptions.cap);
-
+            this.player.setNextResinRefresh(0);
-        if (currentResin < GAME_OPTIONS.resinOptions.cap && this.player.getNextResinRefresh() == 0) {
+        }
-            this.player.setNextResinRefresh(currentTime + GAME_OPTIONS.resinOptions.rechargeTime);
+
-        }
+        // In case server administrators change the resin cap while players are capped,
-
+        // we need to restart recharging here.
-        // Send initial notifications on logon.
+        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
-        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+        int currentTime = Utils.getCurrentSeconds();
-    }
+
-}
+        if (currentResin < GAME_OPTIONS.resinOptions.cap && this.player.getNextResinRefresh() == 0) {
+            this.player.setNextResinRefresh(currentTime + GAME_OPTIONS.resinOptions.rechargeTime);
+        }
+
+        // Send initial notifications on logon.
+        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+    }
+
+    public int buy() {
+        if (this.player.getResinBuyCount() >= MAX_RESIN_BUYING_COUNT) {
+            return RetcodeOuterClass.Retcode.RET_RESIN_BOUGHT_COUNT_EXCEEDED_VALUE;
+        }
+
+        var res = this.player.getInventory().payItem(201, HCOIN_NUM_TO_BUY_RESIN[this.player.getResinBuyCount()]);
+        if (!res) {
+            return RetcodeOuterClass.Retcode.RET_HCOIN_NOT_ENOUGH_VALUE;
+        }
+
+        this.player.setResinBuyCount(this.player.getResinBuyCount() + 1);
+        this.player.setProperty(PlayerProperty.PROP_PLAYER_WAIT_SUB_HCOIN, 0);
+        this.addResin(AMOUNT_TO_ADD);
+        this.player.sendPacket(new PacketItemAddHintNotify(new GameItem(106, AMOUNT_TO_ADD), ActionReason.BuyResin));
+
+        return 0;
+    }
+}

src/main/java/emu/grasscutter/game/player/Player.java

@@ -319,9 +319,12 @@ public class Player {
     private int nextResinRefresh;
     @Getter
     @Setter
+    private int resinBuyCount;
+    @Getter
+    @Setter
     private int lastDailyReset;
     @Getter
-    private final transient MpSettingType mpSetting = MpSettingType.MP_SETTING_TYPE_ENTER_AFTER_APPLY;  // TODO
+    private transient MpSettingType mpSetting = MpSettingType.MP_SETTING_TYPE_ENTER_AFTER_APPLY;  // TODO
 
     @Deprecated
     @SuppressWarnings({"rawtypes", "unchecked"}) // Morphia only!
@@ -1269,6 +1272,9 @@ public class Player {
             this.getBattlePassManager().resetWeeklyMissions();
         }
 
+        // Reset resin-buying count.
+        this.setResinBuyCount(0);
+
         // Done. Update last reset time.
         this.setLastDailyReset(currentTime);
     }

src/main/java/emu/grasscutter/game/props/ItemUseAction/ItemUseAddItem.java

@@ -1,25 +1,25 @@
-package emu.grasscutter.game.props.ItemUseAction;
+package emu.grasscutter.game.props.ItemUseAction;
-
+
-import emu.grasscutter.game.props.ItemUseOp;
+import emu.grasscutter.game.props.ActionReason;
-
+import emu.grasscutter.game.props.ItemUseOp;
-public class ItemUseAddItem extends ItemUseInt {
+
-    private int count = 0;
+public class ItemUseAddItem extends ItemUseInt {
-
+    private int count = 0;
-    public ItemUseAddItem(String[] useParam) {
+
-        super(useParam);
+    @Override
-        try {
+    public ItemUseOp getItemUseOp() {
-            this.count = Integer.parseInt(useParam[1]);
+        return ItemUseOp.ITEM_USE_ADD_ITEM;
-        } catch (NumberFormatException | ArrayIndexOutOfBoundsException ignored) {
+    }
-        }
+
-    }
+    public ItemUseAddItem(String[] useParam) {
-
+        super(useParam);
-    @Override
+        try {
-    public ItemUseOp getItemUseOp() {
+            this.count = Integer.parseInt(useParam[1]);
-        return ItemUseOp.ITEM_USE_ADD_ITEM;
+        } catch (NumberFormatException | ArrayIndexOutOfBoundsException ignored) {}
-    }
+    }
-
+
-    @Override
+    @Override
-    public boolean useItem(UseItemParams params) {
+    public boolean useItem(UseItemParams params) {
-        return params.player.getInventory().addItem(this.i, this.count * params.count);
+        return params.player.getInventory().addItem(this.i, this.count * params.count, ActionReason.PlayerUseItem);
-    }
+    }
-}
+}

src/main/java/emu/grasscutter/server/packet/recv/HandlerBuyResinReq.java

@@ -0,0 +1,16 @@
+package emu.grasscutter.server.packet.recv;
+
+import emu.grasscutter.net.packet.Opcodes;
+import emu.grasscutter.net.packet.PacketHandler;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.server.game.GameSession;
+import emu.grasscutter.server.packet.send.PacketBuyResinRsp;
+
+@Opcodes(PacketOpcodes.BuyResinReq)
+public class HandlerBuyResinReq extends PacketHandler {
+    @Override
+    public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
+        var player = session.getPlayer();
+        session.send(new PacketBuyResinRsp(player, player.getResinManager().buy()));
+    }
+}

src/main/java/emu/grasscutter/server/packet/recv/HandlerSceneAudioNotify.java

@@ -0,0 +1,31 @@
+
+package emu.grasscutter.server.packet.recv;
+
+import javax.lang.model.type.TypeMirror;
+
+import emu.grasscutter.net.packet.Opcodes;
+import emu.grasscutter.net.packet.PacketHandler;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.SceneAudioNotifyOuterClass.SceneAudioNotify;
+import emu.grasscutter.server.game.GameSession;
+import emu.grasscutter.server.packet.send.PacketSceneAudioNotify;
+import java.util.List;
+
+@Opcodes(PacketOpcodes.SceneAudioNotify)
+public class HandlerSceneAudioNotify extends PacketHandler {
+
+    @Override
+    public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
+        SceneAudioNotify notify = SceneAudioNotify.parseFrom(payload);
+
+        int sourceUid = notify.getSourceUid();
+        List<Float> param2 = notify.getParam2List();
+        List<String> param3 = notify.getParam3List();
+        int type = notify.getType();
+        List<Integer> param1 = notify.getParam1List();
+
+        session.getPlayer().getScene().broadcastPacket(new PacketSceneAudioNotify(sourceUid, param2, param3, type, param1));
+    }
+
+}
+

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

@@ -0,0 +1,18 @@
+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.props.PlayerProperty;
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.BuyResinRspOuterClass;
+
+public class PacketBuyResinRsp extends BasePacket {
+    public PacketBuyResinRsp(Player player, int ret) {
+        super(PacketOpcodes.BuyResinRsp);
+
+        this.setData(BuyResinRspOuterClass.BuyResinRsp.newBuilder()
+            .setCurValue(player.getProperty(PlayerProperty.PROP_PLAYER_RESIN))
+            .setRetcode(ret)
+            .build());
+    }
+}

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

@@ -1,24 +1,22 @@
-package emu.grasscutter.server.packet.send;
+package emu.grasscutter.server.packet.send;
-
+
-import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.player.Player;
-import emu.grasscutter.game.props.PlayerProperty;
+import emu.grasscutter.game.props.PlayerProperty;
-import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.BasePacket;
-import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.packet.PacketOpcodes;
-import emu.grasscutter.net.proto.ResinChangeNotifyOuterClass.ResinChangeNotify;
+import emu.grasscutter.net.proto.ResinChangeNotifyOuterClass.ResinChangeNotify;
-
+
-public class PacketResinChangeNotify extends BasePacket {
+public class PacketResinChangeNotify extends BasePacket {
-
+
-    public PacketResinChangeNotify(Player player) {
+	public PacketResinChangeNotify(Player player) {
-        super(PacketOpcodes.ResinChangeNotify);
+        super(PacketOpcodes.ResinChangeNotify);
-
+
-        ResinChangeNotify proto =
+        ResinChangeNotify proto = ResinChangeNotify.newBuilder()
-                ResinChangeNotify.newBuilder()
+            .setCurValue(player.getProperty(PlayerProperty.PROP_PLAYER_RESIN))
-                        .setCurValue(player.getProperty(PlayerProperty.PROP_PLAYER_RESIN))
+            .setNextAddTimestamp(player.getNextResinRefresh())
-                        .setNextAddTimestamp(player.getNextResinRefresh())
+            .setCurBuyCount(player.getResinBuyCount())
-                        .build();
+            .build();
-
+
-        // ToDo: Add ability to buy resin with primogems, has to be included here.
+        this.setData(proto);
-
+    }
-        this.setData(proto);
+}
-    }
-}

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

@@ -0,0 +1,23 @@
+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.SceneAudioNotifyOuterClass;
+import java.util.List;
+
+public class PacketSceneAudioNotify extends BasePacket {
+
+    public PacketSceneAudioNotify(int sourceUid, List<Float> param2, List<String> param3, int type, List<Integer> param1) {
+        super(PacketOpcodes.SceneAudioNotify);
+
+        SceneAudioNotifyOuterClass.SceneAudioNotify proto = SceneAudioNotifyOuterClass.SceneAudioNotify.newBuilder()
+                .setSourceUid(sourceUid)
+                .addAllParam2(param2)
+                .addAllParam3(param3)
+                .setType(type)
+                .addAllParam1(param1)
+                .build();
+        
+        this.setData(proto);
+    }
+}