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|
package fastupdate
import (
"github.com/osm/quake/common/buffer"
"github.com/osm/quake/common/context"
"github.com/osm/quake/protocol"
)
type Command struct {
Bits byte
MoreBits byte
Entity8 byte
Entity16 uint16
Model byte
Frame byte
ColorMap byte
Skin byte
Effects byte
Origin [3]float32
Angle [3]float32
}
func (cmd *Command) Bytes() []byte {
buf := buffer.New()
buf.PutByte(cmd.Bits)
bits16 := uint16(cmd.Bits)
bits16 &= 127
if bits16&protocol.NQUMoreBits != 0 {
buf.PutByte(cmd.MoreBits)
bits16 |= uint16(cmd.MoreBits) << 8
}
if bits16&protocol.NQULongEntity != 0 {
buf.PutUint16(cmd.Entity16)
} else {
buf.PutByte(cmd.Entity8)
}
if bits16&protocol.NQUModel != 0 {
buf.PutByte(cmd.Model)
}
if bits16&protocol.NQUFrame != 0 {
buf.PutByte(cmd.Frame)
}
if bits16&protocol.NQUColorMap != 0 {
buf.PutByte(cmd.ColorMap)
}
if bits16&protocol.NQUSkin != 0 {
buf.PutByte(cmd.Skin)
}
if bits16&protocol.NQUEffects != 0 {
buf.PutByte(cmd.Effects)
}
if bits16&protocol.NQUOrigin1 != 0 {
buf.PutCoord16(cmd.Origin[0])
}
if bits16&protocol.NQUAngle1 != 0 {
buf.PutAngle8(cmd.Angle[0])
}
if bits16&protocol.NQUOrigin2 != 0 {
buf.PutCoord16(cmd.Origin[1])
}
if bits16&protocol.NQUAngle2 != 0 {
buf.PutAngle8(cmd.Angle[1])
}
if bits16&protocol.NQUOrigin3 != 0 {
buf.PutCoord16(cmd.Origin[2])
}
if bits16&protocol.NQUAngle3 != 0 {
buf.PutAngle8(cmd.Angle[2])
}
return buf.Bytes()
}
func Parse(ctx *context.Context, buf *buffer.Buffer, bits byte) (*Command, error) {
var err error
var cmd Command
cmd.Bits = bits
bits16 := uint16(bits)
bits16 &= 127
if bits16&protocol.NQUMoreBits != 0 {
if cmd.MoreBits, err = buf.ReadByte(); err != nil {
return nil, err
}
bits16 |= uint16(cmd.MoreBits) << 8
}
if bits16&protocol.NQULongEntity != 0 {
if cmd.Entity16, err = buf.GetUint16(); err != nil {
return nil, err
}
} else {
if cmd.Entity8, err = buf.ReadByte(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUModel != 0 {
if cmd.Model, err = buf.ReadByte(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUFrame != 0 {
if cmd.Frame, err = buf.ReadByte(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUColorMap != 0 {
if cmd.ColorMap, err = buf.ReadByte(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUSkin != 0 {
if cmd.Skin, err = buf.ReadByte(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUEffects != 0 {
if cmd.Effects, err = buf.ReadByte(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUOrigin1 != 0 {
if cmd.Origin[0], err = buf.GetCoord16(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUAngle1 != 0 {
if cmd.Angle[0], err = buf.GetAngle8(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUOrigin2 != 0 {
if cmd.Origin[1], err = buf.GetCoord16(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUAngle2 != 0 {
if cmd.Angle[1], err = buf.GetAngle8(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUOrigin3 != 0 {
if cmd.Origin[2], err = buf.GetCoord16(); err != nil {
return nil, err
}
}
if bits16&protocol.NQUAngle3 != 0 {
if cmd.Angle[2], err = buf.GetAngle8(); err != nil {
return nil, err
}
}
return &cmd, nil
}
|
