PlayerListItemPacket
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@@ -59,6 +59,7 @@ public enum State {
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ChunkDataPacket.class, 0x20,
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JoinGamePacket.class, 0x23,
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PlayerAbilitiesPacket.class,0x2C,
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PlayerListItemPacket.class,0x2E,
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SPlayerPositionAndLookPacket.class, 0x2F,
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SpawnPositionPacket.class, 0x46
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)
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@@ -0,0 +1,171 @@
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package mc.protocol.packets.server;
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import lombok.*;
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import mc.protocol.io.NetByteBuf;
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import mc.protocol.packets.ServerSidePacket;
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import mc.protocol.utils.GameMode;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Objects;
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import java.util.UUID;
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import java.util.function.BiConsumer;
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/**
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* Player List Item packet.
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*
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* <p>Обновление списка игроков, по кнопке TAB.</p>
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*
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* <p>Структура пакета</p>
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* <pre>
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* | FIELD | TYPE | NOTES |
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* |-------------------|-------------|-------------------------------------------------|
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* | Action | VarInt | Определяет поля для секции "Player" |
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* | Number of players | VarInt | Количество элементов в секции "Players" |
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* | Players | Array | Перечисление полей для каждого игрока (player). |
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* | | | Поля определяются по "Action" |
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* </pre>
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*
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* <p>Варианты "Action"</p>
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* <pre>
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* | ACTION | PLAYER FIELD | TYPE | NOTES |
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* | VALUE | DESCRIPTION | | | |
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* |-------|---------------------|----------------------|-------------|----------------------------------------------------|
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* | 0 | add player | UUID | UUID | |
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* | | | Name | String (16) | |
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* | | | Number Of Properties | VarInt | Количество элементов "Properties" |
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* | | | Properties | - | см. поля ниже |
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* | | | Gamemode | VarInt | |
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* | | | Ping | VarInt | в милисекундах |
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* | | | Has Display Name | Boolean | |
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* | | | Display Name | Text | Опционально. Только если "Has Display Name" = true |
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* | 1 | update gamemode | UUID | UUID | |
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* | | | Gamemode | VarInt | |
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* | 2 | update latency | UUID | UUID | |
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* | | | Ping | VarInt | (см. выше) |
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* | 3 | update display name | UUID | UUID | |
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* | | | Has Display Name | Boolean | |
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* | | | Display Name | Text | (см. выше) |
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* | 4 | remove player | UUID | UUID | |
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* </pre>
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*
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* <p>Поля секции "Properties"</p>
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* <pre>
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* | FIELD | TYPE | NOTES |
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* |-----------|------------- |---------------------------------------------|
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* | Name | String (32767) | |
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* | Value | String (32767) | |
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* | Is Signed | Boolean | |
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* | Signature | String (32767) | Опционально. Только если "Is Signed" = true |
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* </pre>
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*
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* @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Player_List_Item">Player List Item</a>
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*/
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@Data
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public class PlayerListItemPacket implements ServerSidePacket {
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private final List<PlayerItem> playerItems = new ArrayList<>();
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private Action action;
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@Override
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public void writeSelf(NetByteBuf netByteBuf) {
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netByteBuf.writeVarInt(this.action.getCode());
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netByteBuf.writeVarInt(playerItems.size());
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BiConsumer<NetByteBuf, PlayerItem> consumer = null;
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switch (this.action) {
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//@formatter:off
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case ADD_PLAYER: consumer = this::addPlayer; break;
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case UPDATE_GAMEMODE: consumer = this::updateGamemode; break;
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case UPDATE_LATENCY: consumer = this::updateLatency; break;
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case UPDATE_DISPLAY_NAME: consumer = this::updateDisplayName; break;
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case REMOVE_PLAYER: consumer = this::removePlayer; break;
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//@formatter:on
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}
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Objects.requireNonNull(consumer);
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for (PlayerItem playerItem : playerItems) {
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consumer.accept(netByteBuf, playerItem);
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}
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}
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private void addPlayer(NetByteBuf netByteBuf, PlayerItem playerItem) {
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netByteBuf.writeUUID(playerItem.getUuid());
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netByteBuf.writeString(playerItem.getName());
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netByteBuf.writeVarInt(playerItem.getProperties().size());
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for (PlayerProperties property : playerItem.getProperties()) {
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netByteBuf.writeString(property.getName());
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netByteBuf.writeString(property.getValue());
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netByteBuf.writeBoolean(property.getIsSigned());
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if (property.getIsSigned()) {
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netByteBuf.writeString(property.getSignature());
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}
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}
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netByteBuf.writeVarInt(playerItem.getGamemode().getId());
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netByteBuf.writeVarInt(playerItem.getPing());
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netByteBuf.writeBoolean(playerItem.getHasDisplayName());
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if (playerItem.getHasDisplayName()) {
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netByteBuf.writeString(playerItem.getDisplayName());
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}
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}
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private void updateGamemode(NetByteBuf netByteBuf, PlayerItem playerItem) {
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netByteBuf.writeUUID(playerItem.getUuid());
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netByteBuf.writeVarInt(playerItem.getGamemode().getId());
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}
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private void updateLatency(NetByteBuf netByteBuf, PlayerItem playerItem) {
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netByteBuf.writeUUID(playerItem.getUuid());
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netByteBuf.writeVarInt(playerItem.getPing());
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}
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private void updateDisplayName(NetByteBuf netByteBuf, PlayerItem playerItem) {
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netByteBuf.writeUUID(playerItem.getUuid());
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netByteBuf.writeBoolean(playerItem.getHasDisplayName());
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if (playerItem.getHasDisplayName()) {
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netByteBuf.writeString(playerItem.getDisplayName());
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}
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}
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private void removePlayer(NetByteBuf netByteBuf, PlayerItem playerItem) {
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netByteBuf.writeUUID(playerItem.getUuid());
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}
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@RequiredArgsConstructor
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public enum Action {
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ADD_PLAYER(0),
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UPDATE_GAMEMODE(1),
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UPDATE_LATENCY(2),
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UPDATE_DISPLAY_NAME(3),
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REMOVE_PLAYER(4);
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@Getter
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private final int code;
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}
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@Builder(builderClassName = "Builder")
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@Value
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public static class PlayerItem {
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List<PlayerProperties> properties = new ArrayList<>();
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UUID uuid;
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String name;
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GameMode gamemode;
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Integer ping;
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Boolean hasDisplayName;
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String displayName;
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}
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@Builder(builderClassName = "Builder")
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@Value
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public static class PlayerProperties {
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String name;
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String value;
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Boolean isSigned;
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String signature;
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}
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}
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@@ -68,16 +68,20 @@ public class PacketHandler {
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}
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public void onLoginStart(ConnectionContext context, LoginStartPacket loginStartPacket) {
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var playerUuid = UUID.randomUUID();
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var playerName = loginStartPacket.getName();
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var playerGamemode = GameMode.SURVIVAL;
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var loginSuccessPacket = new LoginSuccessPacket();
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loginSuccessPacket.setUuid(UUID.randomUUID());
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loginSuccessPacket.setName(loginStartPacket.getName());
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loginSuccessPacket.setUuid(playerUuid);
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loginSuccessPacket.setName(playerName);
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context.sendNow(loginSuccessPacket);
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context.setState(State.PLAY);
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var joinGamePacket = new JoinGamePacket();
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joinGamePacket.setEntityId(random.nextInt());
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joinGamePacket.setGameMode(GameMode.SURVIVAL);
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joinGamePacket.setGameMode(playerGamemode);
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joinGamePacket.setDimension(0/*Overworld*/);
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joinGamePacket.setDifficulty(Difficulty.PEACEFUL);
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joinGamePacket.setLevelType(LevelType.FLAT);
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@@ -122,6 +126,20 @@ public class PacketHandler {
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context.send(pingPacket);
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context.flushSending();
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// -- Эксперименты -- //
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var playerListItemPacket = new PlayerListItemPacket();
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playerListItemPacket.setAction(PlayerListItemPacket.Action.ADD_PLAYER);
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playerListItemPacket.getPlayerItems().add(PlayerListItemPacket.PlayerItem.builder()
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.uuid(playerUuid)
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.name(playerName)
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.gamemode(playerGamemode)
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.ping(100)
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.hasDisplayName(false)
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.build());
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context.sendNow(playerListItemPacket);
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}
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private static String faviconToBase64(Path iconPath) {
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