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PlayerListItemPacket

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This commit is contained in:
DmitriyMX
2021-05-09 15:17:44 +03:00
parent c6669af651
commit 0d72a8a29c
3 changed files with 193 additions and 3 deletions
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1
protocol/src/main/java/mc/protocol/State.java
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@@ -59,6 +59,7 @@ public enum State {
ChunkDataPacket.class, 0x20,
JoinGamePacket.class, 0x23,
PlayerAbilitiesPacket.class,0x2C,
PlayerListItemPacket.class,0x2E,
SPlayerPositionAndLookPacket.class, 0x2F,
SpawnPositionPacket.class, 0x46
)

171
protocol/src/main/java/mc/protocol/packets/server/PlayerListItemPacket.java Normal file
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@@ -0,0 +1,171 @@
package mc.protocol.packets.server;
import lombok.*;
import mc.protocol.io.NetByteBuf;
import mc.protocol.packets.ServerSidePacket;
import mc.protocol.utils.GameMode;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.UUID;
import java.util.function.BiConsumer;
/**
* Player List Item packet.
*
* <p>Обновление списка игроков, по кнопке TAB.</p>
*
* <p>Структура пакета</p>
* <pre>
* | FIELD | TYPE | NOTES |
* |-------------------|-------------|-------------------------------------------------|
* | Action | VarInt | Определяет поля для секции "Player" |
* | Number of players | VarInt | Количество элементов в секции "Players" |
* | Players | Array | Перечисление полей для каждого игрока (player). |
* | | | Поля определяются по "Action" |
* </pre>
*
* <p>Варианты "Action"</p>
* <pre>
* | ACTION | PLAYER FIELD | TYPE | NOTES |
* | VALUE | DESCRIPTION | | | |
* |-------|---------------------|----------------------|-------------|----------------------------------------------------|
* | 0 | add player | UUID | UUID | |
* | | | Name | String (16) | |
* | | | Number Of Properties | VarInt | Количество элементов "Properties" |
* | | | Properties | - | см. поля ниже |
* | | | Gamemode | VarInt | |
* | | | Ping | VarInt | в милисекундах |
* | | | Has Display Name | Boolean | |
* | | | Display Name | Text | Опционально. Только если "Has Display Name" = true |
* | 1 | update gamemode | UUID | UUID | |
* | | | Gamemode | VarInt | |
* | 2 | update latency | UUID | UUID | |
* | | | Ping | VarInt | (см. выше) |
* | 3 | update display name | UUID | UUID | |
* | | | Has Display Name | Boolean | |
* | | | Display Name | Text | (см. выше) |
* | 4 | remove player | UUID | UUID | |
* </pre>
*
* <p>Поля секции "Properties"</p>
* <pre>
* | FIELD | TYPE | NOTES |
* |-----------|------------- |---------------------------------------------|
* | Name | String (32767) | |
* | Value | String (32767) | |
* | Is Signed | Boolean | |
* | Signature | String (32767) | Опционально. Только если "Is Signed" = true |
* </pre>
*
* @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Player_List_Item">Player List Item</a>
*/
@Data
public class PlayerListItemPacket implements ServerSidePacket {
private final List<PlayerItem> playerItems = new ArrayList<>();
private Action action;
@Override
public void writeSelf(NetByteBuf netByteBuf) {
netByteBuf.writeVarInt(this.action.getCode());
netByteBuf.writeVarInt(playerItems.size());
BiConsumer<NetByteBuf, PlayerItem> consumer = null;
switch (this.action) {
//@formatter:off
case ADD_PLAYER: consumer = this::addPlayer; break;
case UPDATE_GAMEMODE: consumer = this::updateGamemode; break;
case UPDATE_LATENCY: consumer = this::updateLatency; break;
case UPDATE_DISPLAY_NAME: consumer = this::updateDisplayName; break;
case REMOVE_PLAYER: consumer = this::removePlayer; break;
//@formatter:on
}
Objects.requireNonNull(consumer);
for (PlayerItem playerItem : playerItems) {
consumer.accept(netByteBuf, playerItem);
}
}
private void addPlayer(NetByteBuf netByteBuf, PlayerItem playerItem) {
netByteBuf.writeUUID(playerItem.getUuid());
netByteBuf.writeString(playerItem.getName());
netByteBuf.writeVarInt(playerItem.getProperties().size());
for (PlayerProperties property : playerItem.getProperties()) {
netByteBuf.writeString(property.getName());
netByteBuf.writeString(property.getValue());
netByteBuf.writeBoolean(property.getIsSigned());
if (property.getIsSigned()) {
netByteBuf.writeString(property.getSignature());
}
}
netByteBuf.writeVarInt(playerItem.getGamemode().getId());
netByteBuf.writeVarInt(playerItem.getPing());
netByteBuf.writeBoolean(playerItem.getHasDisplayName());
if (playerItem.getHasDisplayName()) {
netByteBuf.writeString(playerItem.getDisplayName());
}
}
private void updateGamemode(NetByteBuf netByteBuf, PlayerItem playerItem) {
netByteBuf.writeUUID(playerItem.getUuid());
netByteBuf.writeVarInt(playerItem.getGamemode().getId());
}
private void updateLatency(NetByteBuf netByteBuf, PlayerItem playerItem) {
netByteBuf.writeUUID(playerItem.getUuid());
netByteBuf.writeVarInt(playerItem.getPing());
}
private void updateDisplayName(NetByteBuf netByteBuf, PlayerItem playerItem) {
netByteBuf.writeUUID(playerItem.getUuid());
netByteBuf.writeBoolean(playerItem.getHasDisplayName());
if (playerItem.getHasDisplayName()) {
netByteBuf.writeString(playerItem.getDisplayName());
}
}
private void removePlayer(NetByteBuf netByteBuf, PlayerItem playerItem) {
netByteBuf.writeUUID(playerItem.getUuid());
}
@RequiredArgsConstructor
public enum Action {
ADD_PLAYER(0),
UPDATE_GAMEMODE(1),
UPDATE_LATENCY(2),
UPDATE_DISPLAY_NAME(3),
REMOVE_PLAYER(4);
@Getter
private final int code;
}
@Builder(builderClassName = "Builder")
@Value
public static class PlayerItem {
List<PlayerProperties> properties = new ArrayList<>();
UUID uuid;
String name;
GameMode gamemode;
Integer ping;
Boolean hasDisplayName;
String displayName;
}
@Builder(builderClassName = "Builder")
@Value
public static class PlayerProperties {
String name;
String value;
Boolean isSigned;
String signature;
}
}

24
server/src/main/java/mc/server/PacketHandler.java
View File

@@ -68,16 +68,20 @@ public class PacketHandler {
}
public void onLoginStart(ConnectionContext context, LoginStartPacket loginStartPacket) {
var playerUuid = UUID.randomUUID();
var playerName = loginStartPacket.getName();
var playerGamemode = GameMode.SURVIVAL;
var loginSuccessPacket = new LoginSuccessPacket();
loginSuccessPacket.setUuid(UUID.randomUUID());
loginSuccessPacket.setName(loginStartPacket.getName());
loginSuccessPacket.setUuid(playerUuid);
loginSuccessPacket.setName(playerName);
context.sendNow(loginSuccessPacket);
context.setState(State.PLAY);
var joinGamePacket = new JoinGamePacket();
joinGamePacket.setEntityId(random.nextInt());
joinGamePacket.setGameMode(GameMode.SURVIVAL);
joinGamePacket.setGameMode(playerGamemode);
joinGamePacket.setDimension(0/*Overworld*/);
joinGamePacket.setDifficulty(Difficulty.PEACEFUL);
joinGamePacket.setLevelType(LevelType.FLAT);
@@ -122,6 +126,20 @@ public class PacketHandler {
context.send(pingPacket);
context.flushSending();
// -- Эксперименты -- //
var playerListItemPacket = new PlayerListItemPacket();
playerListItemPacket.setAction(PlayerListItemPacket.Action.ADD_PLAYER);
playerListItemPacket.getPlayerItems().add(PlayerListItemPacket.PlayerItem.builder()
.uuid(playerUuid)
.name(playerName)
.gamemode(playerGamemode)
.ping(100)
.hasDisplayName(false)
.build());
context.sendNow(playerListItemPacket);
}
private static String faviconToBase64(Path iconPath) {