private List<Vector2> readWaypoints(byte[] buffer, int coordCount, Map map)
{
var reader = new BinaryReader(new MemoryStream(buffer));
var mapSize = map.getSize();
int vectorCount = coordCount / 2;
var vMoves = new List<Vector2>();
var lastCoord = new Vector2(0.0f, 0.0f);
reader.BaseStream.Position = (coordCount + 5) / 8 + coordCount % 2;
for (int i = 0; i < vectorCount; i++)
{
if (GetBitmaskValue(buffer, 2 * i - 2))
lastCoord.X += reader.ReadByte();
else
lastCoord.X = reader.ReadInt16();
if (GetBitmaskValue(buffer, 2 * i - 1))
lastCoord.Y += reader.ReadByte();
else
lastCoord.Y = reader.ReadInt16();
vMoves.Add(new Vector2(2.0f * lastCoord.X + mapSize.X, 2.0f * lastCoord.Y + mapSize.Y));
}
return vMoves;
}
//see PKT_S2C_CharStats mask
//TODO movement
public MovementAns(GameObject actor, Map map) : base(PacketCmdS2C.PKT_S2C_MoveAns)
{
var waypoints = actor.getWaypoints();
buffer.Write((short)1); //count
buffer.Write((byte)(2 * waypoints.Count));
buffer.Write((int)actor.getNetId());
int startPos = (int)buffer.BaseStream.Position;
int coordCount = 2 * waypoints.Count();
var maskSize = (coordCount + 5) / 8; //mask size
//buffer.reserve(pos + maskSize + coordCount * sizeof(short)); //reserve max total size
for (uint i = 0; i < maskSize; i++)
{
buffer.Write((byte)0);
}
var lastCoord = new Vector2();
for (int i = 0; i < waypoints.Count; i++)
{
var mapSize = map.getSize();
var curVector = new Vector2((waypoints[i].X - mapSize.X) / 2, (waypoints[i].Y - mapSize.Y) / 2);
var relative = new Vector2(curVector.X - lastCoord.X, curVector.Y - lastCoord.Y);
var isAbsolute = new Tuple<bool, bool>(
i == 0 || relative.X < sbyte.MinValue || relative.X > sbyte.MaxValue,
i == 0 || relative.Y < sbyte.MinValue || relative.Y > sbyte.MaxValue);
Change(SetBitmaskValue(GetBytes(), startPos, (2 * i - 2), !isAbsolute.Item1));
if (isAbsolute.Item1)
buffer.Write((short)curVector.X);
else
buffer.Write((byte)relative.X);
Change(SetBitmaskValue(GetBytes(), startPos, (2 * i - 1), !isAbsolute.Item2));
if (isAbsolute.Item2)
buffer.Write((short)curVector.Y);
else
buffer.Write((byte)relative.Y);
lastCoord = curVector;
}
}