diff --git a/api/src/main/java/com/viaversion/viaversion/api/protocol/version/ProtocolVersion.java b/api/src/main/java/com/viaversion/viaversion/api/protocol/version/ProtocolVersion.java
index 87004507f..bc8c63960 100644
--- a/api/src/main/java/com/viaversion/viaversion/api/protocol/version/ProtocolVersion.java
+++ b/api/src/main/java/com/viaversion/viaversion/api/protocol/version/ProtocolVersion.java
@@ -77,6 +77,7 @@ public class ProtocolVersion {
public static final ProtocolVersion v1_16_3 = register(753, "1.16.3");
public static final ProtocolVersion v1_16_4 = register(754, "1.16.4/5", new VersionRange("1.16", 4, 5));
public static final ProtocolVersion v1_17 = register(755, "1.17");
+ public static final ProtocolVersion v1_17_1 = register(756, 36, "1.17.1");
public static final ProtocolVersion unknown = register(-1, "UNKNOWN");
public static ProtocolVersion register(int version, String name) {
diff --git a/common/src/main/java/com/viaversion/viaversion/protocol/ProtocolManagerImpl.java b/common/src/main/java/com/viaversion/viaversion/protocol/ProtocolManagerImpl.java
index 96d820ced..a138b700c 100644
--- a/common/src/main/java/com/viaversion/viaversion/protocol/ProtocolManagerImpl.java
+++ b/common/src/main/java/com/viaversion/viaversion/protocol/ProtocolManagerImpl.java
@@ -57,6 +57,7 @@ import com.viaversion.viaversion.protocols.protocol1_16_2to1_16_1.Protocol1_16_2
import com.viaversion.viaversion.protocols.protocol1_16_3to1_16_2.Protocol1_16_3To1_16_2;
import com.viaversion.viaversion.protocols.protocol1_16_4to1_16_3.Protocol1_16_4To1_16_3;
import com.viaversion.viaversion.protocols.protocol1_16to1_15_2.Protocol1_16To1_15_2;
+import com.viaversion.viaversion.protocols.protocol1_17_1to1_17.Protocol1_17_1To1_17;
import com.viaversion.viaversion.protocols.protocol1_17to1_16_4.Protocol1_17To1_16_4;
import com.viaversion.viaversion.protocols.protocol1_9_1_2to1_9_3_4.Protocol1_9_1_2To1_9_3_4;
import com.viaversion.viaversion.protocols.protocol1_9_1to1_9.Protocol1_9_1To1_9;
@@ -160,6 +161,7 @@ public class ProtocolManagerImpl implements ProtocolManager {
registerProtocol(new Protocol1_16_4To1_16_3(), ProtocolVersion.v1_16_4, ProtocolVersion.v1_16_3);
registerProtocol(new Protocol1_17To1_16_4(), ProtocolVersion.v1_17, ProtocolVersion.v1_16_4);
+ registerProtocol(new Protocol1_17_1To1_17(), ProtocolVersion.v1_17_1, ProtocolVersion.v1_17);
}
@Override
diff --git a/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java b/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java
new file mode 100644
index 000000000..f3d029361
--- /dev/null
+++ b/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java
@@ -0,0 +1,112 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+package com.viaversion.viaversion.protocols.protocol1_17_1to1_17;
+
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.ListTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
+import com.viaversion.viaversion.api.minecraft.item.DataItem;
+import com.viaversion.viaversion.api.minecraft.item.Item;
+import com.viaversion.viaversion.api.protocol.AbstractProtocol;
+import com.viaversion.viaversion.api.protocol.remapper.PacketRemapper;
+import com.viaversion.viaversion.api.type.Type;
+import com.viaversion.viaversion.api.type.types.StringType;
+import com.viaversion.viaversion.protocols.protocol1_17to1_16_4.ClientboundPackets1_17;
+import com.viaversion.viaversion.protocols.protocol1_17to1_16_4.ServerboundPackets1_17;
+
+public class Protocol1_17_1To1_17 extends AbstractProtocol {
+
+ private static final StringType PAGE_STRING_TYPE = new StringType(8192);
+ private static final StringType TITLE_STRING_TYPE = new StringType(128);
+
+ public Protocol1_17_1To1_17() {
+ super(ClientboundPackets1_17.class, ClientboundPackets1_17.class, ServerboundPackets1_17.class, ServerboundPackets1_17.class);
+ }
+
+ @Override
+ protected void registerPackets() {
+ registerClientbound(ClientboundPackets1_17.SET_SLOT, new PacketRemapper() {
+ @Override
+ public void registerMap() {
+ map(Type.BYTE); // Container id
+ create(Type.VAR_INT, 0); // Add arbitrary state id
+ }
+ });
+ registerClientbound(ClientboundPackets1_17.WINDOW_ITEMS, new PacketRemapper() {
+ @Override
+ public void registerMap() {
+ map(Type.UNSIGNED_BYTE); // Container id
+ create(Type.VAR_INT, 0); // Add arbitrary state id
+ handler(wrapper -> {
+ // Length encoded as var int now
+ wrapper.write(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT, wrapper.read(Type.FLAT_VAR_INT_ITEM_ARRAY));
+
+ // Carried item - should work like this
+ wrapper.write(Type.FLAT_VAR_INT_ITEM, null);
+ });
+ }
+ });
+
+ registerServerbound(ServerboundPackets1_17.CLICK_WINDOW, new PacketRemapper() {
+ @Override
+ public void registerMap() {
+ map(Type.UNSIGNED_BYTE); // Container id
+ read(Type.VAR_INT); // Remove state id
+ }
+ });
+
+ registerServerbound(ServerboundPackets1_17.EDIT_BOOK, new PacketRemapper() {
+ @Override
+ public void registerMap() {
+ handler(wrapper -> {
+ CompoundTag tag = new CompoundTag();
+ Item item = new DataItem(825, (byte) 1, (short) 0, tag); // Magic value for writable books
+
+ // Write the item, edit the tag down the line
+ wrapper.write(Type.FLAT_VAR_INT_ITEM, item);
+
+ int slot = wrapper.read(Type.VAR_INT);
+
+ // Save pages to tag
+ int pages = wrapper.read(Type.VAR_INT);
+ ListTag pagesTag = new ListTag(StringTag.class);
+ for (int i = 0; i < pages; i++) {
+ String page = wrapper.read(PAGE_STRING_TYPE);
+ pagesTag.add(new StringTag(page));
+ }
+
+ tag.put("pages", pagesTag);
+
+ if (wrapper.read(Type.BOOLEAN)) {
+ // Save the title to tag
+ String title = wrapper.read(TITLE_STRING_TYPE);
+ tag.put("title", new StringTag(title));
+
+ // Write signing
+ wrapper.write(Type.BOOLEAN, true);
+ } else {
+ wrapper.write(Type.BOOLEAN, false);
+ }
+
+ // Write the slot
+ wrapper.write(Type.VAR_INT, slot);
+ });
+ }
+ });
+ }
+}
diff --git a/gradle.properties b/gradle.properties
index 80e721bc3..70d031711 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
# Project properties - we put these here so they can be modified without causing a recompile of the build scripts
-projectVersion=4.0.1-SNAPSHOT
+projectVersion=4.0.1-1.17.1-pre1-SNAPSHOT
# Gradle properties
org.gradle.daemon=true