Java Packet类代码示例

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Redirect(method = "playerLoggedOut",
        at = @At(value = "INVOKE", target = "Lnet/minecraft/server/management/ServerConfigurationManager;"
                + "sendPacketToAllPlayers(Lnet/minecraft/network/Packet;)V"))
public void firePlayerListData(ServerConfigurationManager manager, net.minecraft.network.Packet packetIn, EntityPlayerMP playerIn) {
    PlayerListData playerListData = ((Player) playerIn).getPlayerListData(PlayerListAction.REMOVE_PLAYER);
    for (EntityPlayerMP playerMP : manager.playerEntityList) {
        PlayerListHook playerListHook = new PlayerListHook(playerListData.copy(), (Player) playerMP);
        if (!playerListHook.call().isCanceled()) {
            S38PacketPlayerListItem packet = new S38PacketPlayerListItem();
            packet.action = S38PacketPlayerListItem.Action.valueOf(PlayerListAction.REMOVE_PLAYER.name());
            WorldSettings.GameType gameType =
                    WorldSettings.GameType.getByID(playerListHook.getData().getMode().getId());
            IChatComponent iChatComponent = playerListHook.getData().displayNameSet() ?
                    (IChatComponent) playerListHook.getData().getDisplayName() : null;
            packet.players.add(packet.new AddPlayerData(playerListHook.getData()
                    .getProfile(), playerListHook.getData().getPing(), gameType, iChatComponent));
            playerMP.playerNetServerHandler.sendPacket(packet);
        }
    }
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet createPacket(int id, Object... args) throws InvalidPacketConstructionException {
    if (args == null || args.length < 1) {
        throw new IllegalArgumentException("Arguments cannot be null or empty!");
    }
    switch (id) {
        case 0:
            throw new InvalidPacketConstructionException(id, "KeepAlive", "Keep Alive packets should only be handled by the server!");
        case 1:
            throw new InvalidPacketConstructionException(id, "JoinGame", "Join Game packets should only be handled by the server!");
        case 2:
            this.check(2, "Chat", 1, args, this.test(ChatComponent.class));
            return this.chat((ChatComponent) args[0]);
        case 3:
            this.check(3, "UpdateTime", 2, args, this.test(Long.class), this.test(Long.class));
            return this.updateTime((Long) args[0], (Long) args[1]);
        case 4:
            this.check(4, "EntityEquipment", 3, args, this.test(Integer.class), this.test(Integer.class), this.test(Item.class));
            return this.entityEquipment((Integer) args[0], (Integer) args[1], (Item) args[2]);
        case 5:
            this.check(5, "SpawnPosition", 3, args, this.test(Integer.class), this.test(Integer.class), this.test(Integer.class));
            return this.spawnPosition((Integer) args[0], (Integer) args[1], (Integer) args[2]);
    }
    return null;
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public boolean sendCustomPayloadToPlayer(String channel, byte[] bytes, Player player) {
    try {
        if (bytes == null) {
            throw new CustomPayloadChannelException("Invalid Custom Payload: Byte Array is null.");
        }
        if (channel == null || channel.trim().equals("") || isReservedChannel(channel)) {
            throw new CustomPayloadChannelException(String.format("Invalid Custom Payload: Invalid channel name of '%s'", channel));
        }
        if (channel.length() > 20) {
            throw new CustomPayloadChannelException(String.format("Invalid Custom Payload: Channel Name too long '%s'", channel));
        }
        if (player == null) {
            throw new CustomPayloadChannelException("Invalid Custom Payload: Player is null.");
        }

        if (this.clients.containsKey(channel)) {
            for (final NetServerHandler handler : this.clients.get(channel)) {
                if (handler.getUser().equals(player)) {
                    final PacketBuffer packetbuffer = new PacketBuffer(Unpooled.buffer());
                    packetbuffer.writeByteArray(bytes);
                    handler.sendPacket((Packet) new S3FPacketCustomPayload(channel, packetbuffer));
                    return true;
                }
            }
        }
    } catch (final CustomPayloadChannelException ex) {
        Canary.log.error(ex.getMessage(), ex);
    }

    return false;
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public void handleChat(Packet chatPacket) {
    if (!(chatPacket instanceof S02PacketChat)) {
        return;
    }

    this.sendPacket(chatPacket);
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public void handleChat(Packet chatPacket) {
    if (!(((NeptunePacket) chatPacket).getHandle() instanceof S02PacketChat)) {
        return;
    }

    sendPacket(chatPacket);
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public void handleRespawn(Packet respawnPacket) {
    if (!(((NeptunePacket) respawnPacket).getHandle() instanceof S07PacketRespawn)) {
        return;
    }

    sendPacket(respawnPacket);
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public boolean sendCustomPayloadToAllPlayers(String channel, byte[] bytes) {
    boolean toRet = false;

    try {
        if (bytes == null) {
            throw new CustomPayloadChannelException("Invalid Custom Payload: Byte Array is null.");
        }
        if (channel == null || channel.trim().equals("") || isReservedChannel(channel)) {
            throw new CustomPayloadChannelException(String.format("Invalid Custom Payload: Invalid channel name of '%s'", channel));
        }
        if (channel.length() > 20) {
            throw new CustomPayloadChannelException(String.format("Invalid Custom Payload: Channel Name too long '%s'", channel));
        }

        if (this.clients.containsKey(channel)) {
            for (final NetServerHandler handler : this.clients.get(channel)) {
                final PacketBuffer packetbuffer = new PacketBuffer(Unpooled.buffer());
                packetbuffer.writeByteArray(bytes);
                handler.sendPacket((Packet) new S3FPacketCustomPayload(channel, packetbuffer));
                toRet = true;
            }
        }
    } catch (final CustomPayloadChannelException ex) {
        Canary.log.error(ex.getMessage(), ex);
    }

    return toRet;
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet chat(ChatComponent chatComponent) {
    return null;
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet updateTime(long worldAge, long time) {
    return new NeptunePacket(new S03PacketTimeUpdate(worldAge, time, false));
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet entityEquipment(int entityID, int slot, Item item) {
    return null;
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet spawnPosition(int x, int y, int z) {
    return null;
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet updateHealth(float health, int foodLevel, float saturation) {
    return new NeptunePacket(new S06PacketUpdateHealth(health, foodLevel, saturation));
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet playerPositionLook(double x, double y, double z, float yaw, float pitch, boolean onGround) {
    return null;
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet heldItemChange(int slot) {
    return null;
}
 

import net.canarymod.api.packet.Packet; //导入依赖的package包/类
@Override
public Packet updateWindowProperty(int windowId, int bar, int value) {
    return null;
}