add license and fix some bugs

pkg/protocol/packet/game/server/custom_payload.go

@@ -1,11 +1,16 @@
 package server
 
-import "git.konjactw.dev/falloutBot/go-mc/data/packetid"
+import (
+	"bytes"
+	"io"
+
+	"git.konjactw.dev/falloutBot/go-mc/data/packetid"
+	pk "git.konjactw.dev/falloutBot/go-mc/net/packet"
+)
 
-//codec:gen
 type CustomPayload struct {
-	Channel string `mc:"Identifier"`
-	Data    []byte `mc:"ByteArray"`
+	Channel string
+	Data    []byte
 }
 
 func (*CustomPayload) PacketID() packetid.ServerboundPacketID {
@@ -17,3 +22,28 @@ func init() {
 		return &CustomPayload{}
 	})
 }
+
+func (p CustomPayload) WriteTo(w io.Writer) (n int64, err error) {
+	n, err = pk.Identifier(p.Channel).WriteTo(w)
+	if err != nil {
+		return n, err
+	}
+
+	nn, err := bytes.NewBuffer(p.Data).WriteTo(w)
+	return n + nn, err
+}
+
+func (p *CustomPayload) ReadFrom(r io.Reader) (n int64, err error) {
+	n, err = (*pk.Identifier)(&p.Channel).ReadFrom(r)
+	if err != nil {
+		return
+	}
+
+	data := make([]byte, 32767)
+	nn, err := io.ReadFull(r, data)
+	if err != nil && (err != io.ErrUnexpectedEOF && err != io.EOF) {
+		return n + int64(nn), err
+	}
+	p.Data = data
+	return n + int64(nn), nil
+}