Add high-level protocol (de)serialization

1 files changed, 201 insertions, 0 deletions

diff --git a/ao.go b/ao.go
new file mode 100644
index 0000000..40b9983
--- /dev/null
+++ b/ao.go
@@ -0,0 +1,201 @@
+package mt
+
+import (
+	"fmt"
+	"image/color"
+	"io"
+)
+
+type AOID uint16
+
+type aoType uint8
+
+const genericCAO aoType = 101
+
+type AOInitData struct {
+	// Version.
+	//mt:const uint8(1)
+
+	// For players.
+	Name     string
+	IsPlayer bool
+
+	ID AOID
+
+	Pos
+	Rot [3]float32
+
+	HP uint16
+
+	// See (de)serialize.fmt.
+	Msgs []AOMsg
+}
+
+type AOProps struct {
+	// Version.
+	//mt:const uint8(4)
+
+	MaxHP            uint16 // Player only.
+	CollideWithNodes bool
+	Weight           float32 // deprecated
+	ColBox, SelBox   Box
+	Pointable        bool
+	Visual           string
+	VisualSize       [3]float32
+	Textures         []Texture
+	SpritesheetSize  [2]int16 // in sprites.
+	SpritePos        [2]int16 // in sprite sheet.
+	Visible          bool
+	MakeFootstepSnds bool
+	RotateSpeed      float32 // in radians per second.
+	Mesh             string
+	Colors           []color.NRGBA
+	CollideWithAOs   bool
+	StepHeight       float32
+	FaceRotateDir    bool
+	FaceRotateDirOff float32 // in degrees.
+	BackfaceCull     bool
+	Nametag          string
+	NametagColor     color.NRGBA
+	FaceRotateSpeed  float32 // in degrees per second.
+	Infotext         string
+	Itemstring       string
+	Glow             int8
+	MaxBreath        uint16  // Player only.
+	EyeHeight        float32 // Player only.
+	ZoomFOV          float32 // in degrees. Player only.
+	UseTextureAlpha  bool
+	DmgTextureMod    Texture // suffix
+	Shaded           bool
+	ShowOnMinimap    bool
+	NametagBG        color.NRGBA
+}
+
+type AOPos struct {
+	Pos
+	Vel, Acc Vec
+	Rot      [3]float32
+
+	Interpolate    bool
+	End            bool
+	UpdateInterval float32
+}
+
+type AOSprite struct {
+	Frame0          [2]int16
+	Frames          uint16
+	FrameDuration   float32
+	ViewAngleFrames bool
+}
+
+type AOAnim struct {
+	Frames [2]int32
+	Speed  float32
+	Blend  float32
+	NoLoop bool
+}
+
+type AOBonePos struct {
+	Pos Vec
+	Rot [3]float32
+}
+
+type AOAttach struct {
+	ParentID     AOID
+	Bone         string
+	Pos          Vec
+	Rot          [3]float32
+	ForceVisible bool
+}
+
+type AOPhysOverride struct {
+	Walk, Jump, Gravity float32
+
+	// Player only.
+	NoSneak, NoSneakGlitch, OldSneak bool
+}
+
+type AOCmdProps struct {
+	Props AOProps
+}
+
+type AOCmdPos struct {
+	Pos AOPos
+}
+
+type AOCmdTextureMod struct {
+	Mod Texture // suffix
+}
+
+type AOCmdSprite struct {
+	Sprite AOSprite
+}
+
+type AOCmdHP struct {
+	HP uint16
+}
+
+type AOCmdArmorGroups struct {
+	Armor []Group
+}
+
+type AOCmdAnim struct {
+	Anim AOAnim
+}
+
+type AOCmdBonePos struct {
+	Bone string
+	Pos  AOBonePos
+}
+
+type AOCmdAttach struct {
+	Attach AOAttach
+}
+
+type AOCmdPhysOverride struct {
+	Phys AOPhysOverride
+}
+
+type AOCmdSpawnInfant struct {
+	ID AOID
+
+	// Type.
+	//mt:const genericCAO
+}
+
+type AOCmdAnimSpeed struct {
+	Speed float32
+}
+
+//go:generate ./cmdno.sh aocmds AOCmd ao uint8 AOMsg newAOMsg
+
+type AOMsg interface {
+	aoCmdNo() uint8
+}
+
+func writeAOMsg(w io.Writer, msg AOMsg) error {
+	if _, err := w.Write([]byte{msg.aoCmdNo()}); err != nil {
+		return err
+	}
+	return serialize(w, msg)
+}
+
+func readAOMsg(r io.Reader) (AOMsg, error) {
+	buf := make([]byte, 1)
+	if _, err := io.ReadFull(r, buf); err != nil {
+		return nil, err
+	}
+	newCmd, ok := newAOMsg[buf[0]]
+	if !ok {
+		return nil, fmt.Errorf("unsupported ao msg: %d", buf[0])
+	}
+	msg := newCmd()
+	return msg, deserialize(r, msg)
+}
+
+type IDAOMsg struct {
+	ID AOID
+	//mt:lenhdr 16
+	Msg AOMsg
+	//mt:end
+}