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Packet83_0D.go
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Packet83_0D.go
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package peer
import (
"fmt"
)
// StreamInfo represents a streaming region id
type StreamInfo struct {
X int32
Y int32
Z int32
}
func (thisStream *extendedReader) readStreamInfo() (StreamInfo, error) {
info := StreamInfo{}
is32Bit, err := thisStream.readBoolByte()
if err != nil {
return info, err
}
if is32Bit {
x, err := thisStream.readUint32BE()
if err != nil {
return info, err
}
y, err := thisStream.readUint32BE()
if err != nil {
return info, err
}
z, err := thisStream.readUint32BE()
if err != nil {
return info, err
}
info.X = int32(x)
info.Y = int32(y)
info.Z = int32(z)
} else {
x, err := thisStream.ReadByte()
if err != nil {
return info, err
}
y, err := thisStream.ReadByte()
if err != nil {
return info, err
}
z, err := thisStream.ReadByte()
if err != nil {
return info, err
}
info.X = int32(int8(x))
info.Y = int32(int8(y))
info.Z = int32(int8(z))
}
return info, nil
}
func isIn8BitRange(val int32) bool {
return -127 < val && val < 127
}
// Serialize writes the StreamInfo into a network stream
func (info StreamInfo) Serialize(stream *extendedWriter) error {
is32Bit := !(isIn8BitRange(info.X) && isIn8BitRange(info.Y) && isIn8BitRange(info.Z))
err := stream.writeBoolByte(is32Bit)
if err != nil {
return err
}
if is32Bit {
err = stream.writeUint32BE(uint32(info.X))
if err != nil {
return err
}
err = stream.writeUint32BE(uint32(info.Y))
if err != nil {
return err
}
err = stream.writeUint32BE(uint32(info.Z))
if err != nil {
return err
}
} else {
err = stream.WriteByte(byte(info.X))
if err != nil {
return err
}
err = stream.WriteByte(byte(info.Y))
if err != nil {
return err
}
err = stream.WriteByte(byte(info.Z))
if err != nil {
return err
}
}
return nil
}
func (info StreamInfo) String() string {
return fmt.Sprintf("%d, %d, %d", info.X, info.Y, info.Z)
}
// Packet83_0D represents ID_REPLIC_STREAM_DATA
type Packet83_0D struct {
Bool1 bool
Bool2 bool
Region StreamInfo
Instances []*ReplicationInstance
}
func (thisStream *extendedReader) DecodePacket83_0D(reader PacketReader, layers *PacketLayers) (Packet83Subpacket, error) {
inner := &Packet83_0D{}
var err error
inner.Bool1, err = thisStream.readBoolByte()
if err != nil {
return inner, err
}
inner.Bool2, err = thisStream.readBoolByte()
if err != nil {
return inner, err
}
if !inner.Bool1 && !inner.Bool2 {
inner.Region, err = thisStream.readStreamInfo()
if err != nil {
return inner, err
}
}
joinData, err := thisStream.DecodePacket83_0B(reader, layers)
if err != nil {
return inner, err
}
inner.Instances = joinData.(*Packet83_0B).Instances
return inner, nil
}
// Serialize implements Packet83Subpacket.Serialize()
func (layer *Packet83_0D) Serialize(writer PacketWriter, stream *extendedWriter) error {
err := stream.writeBoolByte(layer.Bool1)
if err != nil {
return err
}
err = stream.writeBoolByte(layer.Bool2)
if err != nil {
return err
}
if !layer.Bool1 && !layer.Bool2 {
err = layer.Region.Serialize(stream)
if err != nil {
return err
}
}
return (&Packet83_0B{Instances: layer.Instances}).Serialize(writer, stream)
}
// Type implements Packet83Subpacket.Type()
func (Packet83_0D) Type() uint8 {
return 0x0D
}
// TypeString implements Packet83Subpacket.TypeString()
func (Packet83_0D) TypeString() string {
return "ID_REPLIC_STREAM_DATA"
}
func (layer *Packet83_0D) String() string {
return fmt.Sprintf("ID_REPLIC_STREAM_DATA: %s, %d instances", layer.Region, len(layer.Instances))
}