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|
package tempentity
import (
"github.com/osm/quake/common/buffer"
"github.com/osm/quake/common/context"
"github.com/osm/quake/protocol"
)
type Command struct {
IsNQ bool
CoordSize uint8
Type byte
Coord [3]float32
EndCoord [3]float32
Entity uint16
Count byte
ColorStart byte
ColorLength byte
}
func (cmd *Command) Bytes() []byte {
buf := buffer.New()
writeCoord := buf.PutCoord16
if cmd.CoordSize == 4 {
writeCoord = buf.PutCoord32
}
buf.PutByte(protocol.SVCTempEntity)
buf.PutByte(cmd.Type)
switch cmd.Type {
case protocol.TELightning1:
fallthrough
case protocol.TELightning2:
fallthrough
case protocol.TELightning3:
buf.PutUint16(cmd.Entity)
for i := 0; i < 3; i++ {
writeCoord(cmd.Coord[i])
}
for i := 0; i < 3; i++ {
writeCoord(cmd.EndCoord[i])
}
case protocol.TEGunshot:
fallthrough
case protocol.TEBlood:
if !cmd.IsNQ {
buf.PutByte(cmd.Count)
}
for i := 0; i < 3; i++ {
writeCoord(cmd.Coord[i])
}
if cmd.IsNQ && cmd.Type != protocol.TEGunshot {
buf.PutByte(cmd.ColorStart)
buf.PutByte(cmd.ColorLength)
}
case protocol.TELightningBlood:
if cmd.IsNQ {
buf.PutUint16(cmd.Entity)
}
for i := 0; i < 3; i++ {
writeCoord(cmd.Coord[i])
}
if cmd.IsNQ {
for i := 0; i < 3; i++ {
writeCoord(cmd.EndCoord[i])
}
}
default:
for i := 0; i < 3; i++ {
writeCoord(cmd.Coord[i])
}
}
return buf.Bytes()
}
func Parse(ctx *context.Context, buf *buffer.Buffer) (*Command, error) {
var err error
var cmd Command
cmd.IsNQ = ctx.GetIsNQ()
cmd.CoordSize = ctx.GetCoordSize()
readCoord := buf.GetCoord16
if cmd.CoordSize == 4 {
readCoord = buf.GetCoord32
}
if cmd.Type, err = buf.ReadByte(); err != nil {
return nil, err
}
switch cmd.Type {
case protocol.TELightning1:
fallthrough
case protocol.TELightning2:
fallthrough
case protocol.TELightning3:
if cmd.Entity, err = buf.GetUint16(); err != nil {
return nil, err
}
for i := 0; i < 3; i++ {
if cmd.Coord[i], err = readCoord(); err != nil {
return nil, err
}
}
for i := 0; i < 3; i++ {
if cmd.EndCoord[i], err = readCoord(); err != nil {
return nil, err
}
}
case protocol.TEGunshot:
fallthrough
case protocol.TEBlood:
if !cmd.IsNQ {
if cmd.Count, err = buf.ReadByte(); err != nil {
return nil, err
}
}
for i := 0; i < 3; i++ {
if cmd.Coord[i], err = readCoord(); err != nil {
return nil, err
}
}
if cmd.IsNQ && cmd.Type != protocol.TEGunshot {
if cmd.ColorStart, err = buf.ReadByte(); err != nil {
return nil, err
}
if cmd.ColorLength, err = buf.ReadByte(); err != nil {
return nil, err
}
}
case protocol.TELightningBlood:
if cmd.IsNQ {
if cmd.Entity, err = buf.GetUint16(); err != nil {
return nil, err
}
}
for i := 0; i < 3; i++ {
if cmd.Coord[i], err = readCoord(); err != nil {
return nil, err
}
}
if cmd.IsNQ {
for i := 0; i < 3; i++ {
if cmd.EndCoord[i], err = readCoord(); err != nil {
return nil, err
}
}
}
default:
for i := 0; i < 3; i++ {
if cmd.Coord[i], err = readCoord(); err != nil {
return nil, err
}
}
}
return &cmd, nil
}
|
