func (item *Item) ReadNbt(tag nbt.ITag) (err os.Error) {
if err = item.PointObject.ReadNbt(tag); err != nil {
return
}
itemInfo, ok := tag.Lookup("Item").(*nbt.Compound)
if !ok {
return os.NewError("bad item data")
}
// Grab the basic item data
id, idOk := itemInfo.Lookup("id").(*nbt.Short)
count, countOk := itemInfo.Lookup("Count").(*nbt.Byte)
data, dataOk := itemInfo.Lookup("Damage").(*nbt.Short)
if !idOk || !countOk || !dataOk {
return os.NewError("bad item data")
}
item.Slot = Slot{
ItemTypeId: ItemTypeId(id.Value),
Count: ItemCount(count.Value),
Data: ItemData(data.Value),
}
return nil
}
func ReadFloat(tag nbt.ITag, path string) (v float32, err error) {
vTag, ok := tag.Lookup(path).(*nbt.Float)
if !ok {
err = fmt.Errorf("ReadFloat %q: was not a Float", path)
return
}
return vTag.Value, nil
}
func ReadByte(tag nbt.ITag, path string) (v int8, err error) {
vTag, ok := tag.Lookup(path).(*nbt.Byte)
if !ok {
err = fmt.Errorf("ReadByte %q: was not a Byte", path)
return
}
return vTag.Value, nil
}
func ReadInt(tag nbt.ITag, path string) (v int32, err error) {
vTag, ok := tag.Lookup(path).(*nbt.Int)
if !ok {
err = fmt.Errorf("ReadInt %q: was not a Int", path)
return
}
return vTag.Value, nil
}
func ReadShort(tag nbt.ITag, path string) (v int16, err error) {
vTag, ok := tag.Lookup(path).(*nbt.Short)
if !ok {
err = fmt.Errorf("ReadShort %q: was not a Short", path)
return
}
return vTag.Value, nil
}
func ReadBlockXyzCompound(tag nbt.ITag) (loc BlockXyz, err error) {
x, xOk := tag.Lookup("x").(*nbt.Int)
y, yOk := tag.Lookup("y").(*nbt.Int)
z, zOk := tag.Lookup("z").(*nbt.Int)
if !xOk || !yOk || !zOk {
err = fmt.Errorf("ReadBlockXyzCompound: x, y or z was not present or not an Int in %#v", tag)
return
}
return BlockXyz{BlockCoord(x.Value), BlockYCoord(y.Value), BlockCoord(z.Value)}, nil
}
// Given the NamedTag for a level.dat, returns an appropriate
// IChunkStoreForeground.
func ChunkStoreForLevel(worldPath string, levelData nbt.ITag, dimension DimensionId) (store IChunkStoreForeground, err os.Error) {
versionTag, ok := levelData.Lookup("Data/version").(*nbt.Int)
if !ok {
store = newChunkStoreAlpha(worldPath, dimension)
} else {
switch version := versionTag.Value; version {
case 19132:
store = newChunkStoreBeta(worldPath, dimension)
default:
err = UnknownLevelVersion(version)
}
}
return
}
func ReadFloat2(tag nbt.ITag, path string) (x, y float32, err error) {
list, ok := tag.Lookup(path).(*nbt.List)
if !ok || len(list.Value) != 2 {
err = fmt.Errorf("ReadFloat2 %q: not a list of 2", path)
return
}
xv, xok := list.Value[0].(*nbt.Float)
yv, yok := list.Value[1].(*nbt.Float)
if ok = xok && yok; ok {
x, y = xv.Value, yv.Value
} else {
err = fmt.Errorf("ReadFloat2 %q: X or Y was not a Float", path)
}
return
}
// Given the NamedTag for a level.dat, returns an appropriate
// IChunkStoreForeground.
func ChunkStoreForLevel(worldPath string, levelData nbt.ITag, dimension DimensionId) (store IChunkStoreForeground, err error) {
versionTag, ok := levelData.Lookup("Data/version").(*nbt.Int)
if !ok {
log.Fatalln("Invalid world format! (Is it pre-anvil?)")
} else {
switch version := versionTag.Value; version {
case 19132:
log.Fatalln("Chunky Monkey only supports the Anvil world format!")
case 19133:
store, err = newChunkStoreAnvil(worldPath, dimension)
default:
err = UnknownLevelVersion(version)
}
}
return
}
func (obj *PointObject) ReadNbt(tag nbt.ITag) (err os.Error) {
// Position within the chunk
if obj.position, err = nbtutil.ReadAbsXyz(tag, "Pos"); err != nil {
return
}
obj.LastSentPosition = *obj.position.ToAbsIntXyz()
// Motion
if obj.velocity, err = nbtutil.ReadAbsVelocity(tag, "Motion"); err != nil {
return
}
obj.LastSentVelocity = *obj.velocity.ToVelocity()
if onGround, ok := tag.Lookup("OnGround").(*nbt.Byte); ok {
obj.onGround = onGround.Value != 0
}
return nil
}
func ReadDouble3(tag nbt.ITag, path string) (x, y, z float64, err error) {
list, ok := tag.Lookup(path).(*nbt.List)
if !ok || len(list.Value) != 3 {
err = fmt.Errorf("ReadDouble3 %q: not a list of 3", path)
return
}
xv, xok := list.Value[0].(*nbt.Double)
yv, yok := list.Value[1].(*nbt.Double)
zv, zok := list.Value[2].(*nbt.Double)
if ok = xok && yok && zok; ok {
x, y, z = xv.Value, yv.Value, zv.Value
} else {
err = fmt.Errorf("ReadDouble3 %q: X, Y or Z was not a Double", path)
}
return
}
func absXyzFromNbt(tag nbt.ITag, path string) (pos AbsXyz, err error) {
posList, posOk := tag.Lookup(path).(*nbt.List)
if !posOk {
err = BadType(path)
return
}
x, xOk := posList.Value[0].(*nbt.Double)
y, yOk := posList.Value[1].(*nbt.Double)
z, zOk := posList.Value[2].(*nbt.Double)
if !xOk || !yOk || !zOk {
err = BadType(path)
return
}
pos = AbsXyz{
AbsCoord(x.Value),
AbsCoord(y.Value),
AbsCoord(z.Value),
}
return
}
func (mob *Mob) ReadNbt(tag nbt.ITag) (err os.Error) {
if err = mob.PointObject.ReadNbt(tag); err != nil {
return
}
if mob.look, err = nbtutil.ReadLookDegrees(tag, "Rotation"); err != nil {
return
}
// TODO
_ = tag.Lookup("FallDistance").(*nbt.Float).Value
_ = tag.Lookup("Air").(*nbt.Short).Value
_ = tag.Lookup("Fire").(*nbt.Short).Value
return nil
}
func (s *Slot) ReadNbt(tag nbt.ITag) (err os.Error) {
var ok bool
var idTag, damageTag *nbt.Short
var countTag *nbt.Byte
if idTag, ok = tag.Lookup("id").(*nbt.Short); !ok {
return os.NewError("id tag not Short")
}
if countTag, ok = tag.Lookup("Count").(*nbt.Byte); !ok {
return os.NewError("Count tag not Byte")
}
if damageTag, ok = tag.Lookup("Damage").(*nbt.Short); !ok {
return os.NewError("Damage tag not Short")
}
s.ItemTypeId = ItemTypeId(idTag.Value)
s.Count = ItemCount(countTag.Value)
s.Data = ItemData(damageTag.Value)
return
}
// ReadNbt reads the player data from their persistently stored NBT data. It
// must only be called before Player.Start().
func (player *Player) ReadNbt(playerData nbt.ITag) (err os.Error) {
if player.position, err = nbtutil.ReadAbsXyz(playerData, "Pos"); err != nil {
return
}
if player.look, err = nbtutil.ReadLookDegrees(playerData, "Rotation"); err != nil {
return
}
health, err := nbtutil.ReadShort(playerData, "Health")
if err != nil {
return
}
player.health = Health(health)
if err = player.inventory.ReadNbt(playerData.Lookup("Inventory")); err != nil {
return
}
if player.onGround, err = nbtutil.ReadByte(playerData, "OnGround"); err != nil {
return
}
if player.dimension, err = nbtutil.ReadInt(playerData, "Dimension"); err != nil {
return
}
if player.sleeping, err = nbtutil.ReadByte(playerData, "Sleeping"); err != nil {
return
}
if player.fallDistance, err = nbtutil.ReadFloat(playerData, "FallDistance"); err != nil {
return
}
if player.sleepTimer, err = nbtutil.ReadShort(playerData, "SleepTimer"); err != nil {
return
}
if player.attackTime, err = nbtutil.ReadShort(playerData, "AttackTime"); err != nil {
return
}
if player.deathTime, err = nbtutil.ReadShort(playerData, "DeathTime"); err != nil {
return
}
if player.motion, err = nbtutil.ReadAbsVelocity(playerData, "Motion"); err != nil {
return
}
if player.hurtTime, err = nbtutil.ReadShort(playerData, "HurtTime"); err != nil {
return
}
if player.air, err = nbtutil.ReadShort(playerData, "Air"); err != nil {
return
}
if player.fire, err = nbtutil.ReadShort(playerData, "Fire"); err != nil {
return
}
return
}