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Packet86Layer.go
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Packet86Layer.go
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package peer
import (
"errors"
"fmt"
"github.com/Gskartwii/roblox-dissector/datamodel"
)
// Packet86LayerSubpacket represents touch replication for a single touch
type Packet86LayerSubpacket struct {
Instance1 *datamodel.Instance
Instance2 *datamodel.Instance
// Touch started? If false, ended.
IsTouch bool
}
// Packet86Layer represents ID_TOUCHES - client <-> server
type Packet86Layer struct {
SubPackets []*Packet86LayerSubpacket
}
func (thisStream *extendedReader) DecodePacket86Layer(reader PacketReader, layers *PacketLayers) (RakNetPacket, error) {
layer := &Packet86Layer{}
context := reader.Context()
for {
subpacket := &Packet86LayerSubpacket{}
reference, err := thisStream.ReadObject(reader)
if err != nil {
return layer, err
}
if reference.IsNull {
break
}
subpacket.Instance1, _ = context.InstancesByReference.TryGetInstance(reference)
reference, err = thisStream.ReadObject(reader)
if err != nil {
return layer, err
}
if reference.IsNull {
return layer, errors.New("NULL second touch reference")
}
subpacket.Instance2, _ = context.InstancesByReference.TryGetInstance(reference)
subpacket.IsTouch, err = thisStream.readBoolByte()
if err != nil {
return layer, err
}
layer.SubPackets = append(layer.SubPackets, subpacket)
}
return layer, nil
}
// Serialize implements RakNetPacket.Serialize
func (layer *Packet86Layer) Serialize(writer PacketWriter, stream *extendedWriter) error {
var err error
for i := 0; i < len(layer.SubPackets); i++ {
subpacket := layer.SubPackets[i]
if subpacket.Instance1 == nil || subpacket.Instance2 == nil {
println("WARNING: 0x86 skipping serialize because instances don't exist yet!")
continue
}
err = stream.WriteObject(subpacket.Instance1, writer)
if err != nil {
return err
}
err = stream.WriteObject(subpacket.Instance2, writer)
if err != nil {
return err
}
err = stream.writeBoolByte(subpacket.IsTouch)
if err != nil {
return err
}
}
return stream.WriteByte(0x00) // reference to NULL instance; terminator
}
func (layer *Packet86Layer) String() string {
return fmt.Sprintf("ID_TOUCH: %d items", len(layer.SubPackets))
}
// TypeString implements RakNetPacket.TypeString()
func (Packet86Layer) TypeString() string {
return "ID_TOUCH"
}
// Type implements RakNetPacket.Type()
func (Packet86Layer) Type() byte {
return 0x86
}