public static KnyttSave FromBinary(KnyttWorld world, byte[] data, bool slim = false)
{
var save = new KnyttSave(world);
int bposition = 0;
if (!slim)
{
var y = data[bposition++];
var k = data[bposition++];
if (y != 'Y' || k != 'K')
{
throw new SystemException("Magic number YK not present");
}
}
using (SHA1Managed sha1 = new SHA1Managed())
{
var hash = sha1.ComputeHash(Encoding.UTF8.GetBytes(save.getWorldDirectory()));
for (int i = 0; i < (slim ? SLIM_HASH_BYTES : HASH_BYTES); i++)
{
if (!(hash[i] == data[bposition++]))
{
throw new SystemException("World name hash doesn't match.");
}
}
}
save.setArea(new KnyttPoint((int)new VarInt(data, ref bposition).Value + 1000,
(int)new VarInt(data, ref bposition).Value + 1000));
int bitpack = (int)new VarInt(data, ref bposition).Value;
save.setAreaPosition(new KnyttPoint(bitpack & 0x1F, (bitpack & (0xF << 5)) >> 5));
JuniValues values = new JuniValues();
BinaryTools.readBoolArray(bitpack, values.Powers, 9);
BinaryTools.readBoolArray(bitpack, values.Flags, 21);
values.writeToSave(save);
return(save);
}
public byte[] ToBinary(bool slim = false)
{
List <byte> result = new List <byte>();
if (!slim)
{
result.Add((byte)'Y');
result.Add((byte)'K');
}
using (SHA1Managed sha1 = new SHA1Managed())
{
var hash = sha1.ComputeHash(Encoding.UTF8.GetBytes(getWorldDirectory()));
for (int i = 0; i < (slim ? SLIM_HASH_BYTES : HASH_BYTES); i++)
{
result.Add(hash[i]);
}
}
var area = getArea();
result.AddRange(new VarInt(area.x - 1000).Bytes);
result.AddRange(new VarInt(area.y - 1000).Bytes);
int bitpack = 0;
var pos = getAreaPosition();
bitpack |= pos.x & 0x1F;
bitpack |= (pos.y & 0xF) << 5;
JuniValues values = new JuniValues(this);
bitpack = BinaryTools.writeBoolArray(values.Powers, bitpack, 9);
bitpack = BinaryTools.writeBoolArray(values.Flags, bitpack, 21);
result.AddRange(new VarInt(bitpack).Bytes);
return(result.ToArray());
}
