1 files changed, 100 insertions, 0 deletions
diff --git a/demo/mvd/usercommand.go b/demo/mvd/usercommand.go
new file mode 100644
index 0000000..fc06b18
--- /dev/null
+++ b/demo/mvd/usercommand.go
@@ -0,0 +1,100 @@
+package mvd
+
+import (
+	"github.com/osm/quake/common/buffer"
+	"github.com/osm/quake/common/context"
+)
+
+type UserCommand struct {
+	size uint32
+
+	Data        []byte
+	PlayerIndex byte
+	DropIndex   byte
+	Msec        byte
+	Angle       [3]float32
+	Forward     uint16
+	Side        uint16
+	Up          uint16
+	Buttons     byte
+	Impulse     byte
+}
+
+func (cmd *UserCommand) Bytes() []byte {
+	if cmd.size != 23 {
+		return cmd.Data
+	}
+
+	buf := buffer.New()
+
+	buf.PutByte(cmd.PlayerIndex)
+	buf.PutByte(cmd.DropIndex)
+	buf.PutByte(cmd.Msec)
+
+	for _, a := range cmd.Angle {
+		buf.PutFloat32(a)
+	}
+
+	buf.PutUint16(cmd.Forward)
+	buf.PutUint16(cmd.Side)
+	buf.PutUint16(cmd.Up)
+	buf.PutByte(cmd.Buttons)
+	buf.PutByte(cmd.Impulse)
+
+	return buf.Bytes()
+}
+
+func parseUserCommand(ctx *context.Context, buf *buffer.Buffer, size uint32) (*UserCommand, error) {
+	var err error
+	var cmd UserCommand
+
+	cmd.size = size
+	if cmd.size != 23 {
+		if cmd.Data, err = buf.GetBytes(int(cmd.size)); err != nil {
+			return nil, err
+		}
+
+		goto end
+	}
+
+	if cmd.PlayerIndex, err = buf.ReadByte(); err != nil {
+		return nil, err
+	}
+
+	if cmd.DropIndex, err = buf.ReadByte(); err != nil {
+		return nil, err
+	}
+
+	if cmd.Msec, err = buf.ReadByte(); err != nil {
+		return nil, err
+	}
+
+	for i := 0; i < 3; i++ {
+		if cmd.Angle[i], err = buf.GetFloat32(); err != nil {
+			return nil, err
+		}
+	}
+
+	if cmd.Forward, err = buf.GetUint16(); err != nil {
+		return nil, err
+	}
+
+	if cmd.Side, err = buf.GetUint16(); err != nil {
+		return nil, err
+	}
+
+	if cmd.Up, err = buf.GetUint16(); err != nil {
+		return nil, err
+	}
+
+	if cmd.Buttons, err = buf.ReadByte(); err != nil {
+		return nil, err
+	}
+
+	if cmd.Impulse, err = buf.ReadByte(); err != nil {
+		return nil, err
+	}
+
+end:
+	return &cmd, nil
+}