public static HeightMapVertex[,] DecodeHeightMap(byte[] HeightData1, byte[] HeightData2)
{
HeightMapVertex[,] heightMap = new HeightMapVertex[0x21, 0x41]; //0x21 blank spaces between the 2 vertex sets, unused?
int offset = 0;
//Decode heightmap 1
for (int j = 0; j <= 0x20; j++)
{
for (int i = 0; i <= 0x10; i += 2)
{
heightMap[i * 2, j * 2] = DecodeVertex(HeightData1, ref offset,
(short)(i * 0x100), (short)(j * 0x100));
}
for (int i = 1; i <= 0x10; i += 2)
{
heightMap[i * 2, j * 2] = DecodeVertex(HeightData1, ref offset,
(short)(i * 0x100), (short)(j * 0x100));
}
}
List <HeightMapVertex> UnusedVertices = new List <HeightMapVertex>(); //should be 33
for (int i = 0; i <= 0x20; i++)
{
UnusedVertices.Add(DecodeVertex(HeightData1, ref offset, 0, 0));
}
//Decode heightmap 2
offset = 0;
for (int j = 0; j < 16; j++)
{
for (int i = 0; i < 8; i++)
{
for (int k = 0; k < 16; k++)
{
int x, y;
short defaultS, defaultT;
GetHeightMap2Info(i, j, k, out x, out y);
GetDefaultHD2Values(k, out defaultS, out defaultT);
HeightMapVertex vertex = DecodeVertex(HeightData2, ref offset,
(short)(x * 0x80), (short)(y * 0x80));
vertex.S = defaultS;
vertex.T = defaultT;
heightMap[x, y] = vertex;
}
}
}
return(heightMap);
}
public static HeightMapVertex[,] CreateBlankMap()
{
HeightMapVertex[,] vertices = new HeightMapVertex[0x21, 0x41];
for (int j = 0; j < 0x41; j++)
{
for (int i = 0; i < 0x21; i++)
{
vertices[i, j] = new HeightMapVertex((short)(i * 0x80), 0, (short)(j * 0x80));
}
}
return(vertices);
}
private static void EncodeVertex(HeightMapVertex vertex, List <byte> output,
short defaultX, short defaultZ)
{
CommandByte command = new CommandByte();
command.UseDefaultX = (defaultX == vertex.X);
command.UseDefaultZ = (defaultZ == vertex.Z);
List <byte> bytes = new List <byte>();
if (!command.UseDefaultX)
{
//Determine x flags
if (((ushort)(vertex.X << 8) >> 8) == vertex.X)
{
command.XFlags = CommandByte.ByteReadingType.Read1ByteNoShift;
bytes.Add((byte)(vertex.X & 0xff));
}
else if ((vertex.X & 0x3fc0) == vertex.X && ((ushort)(vertex.X << 2) >> 2) == vertex.X)
{
command.XFlags = CommandByte.ByteReadingType.Read1ByteShift2;
bytes.Add((byte)((vertex.X >> 6) & 0xff));
}
else if ((vertex.X & 0x1fe0) == vertex.X && ((ushort)(vertex.X << 3) >> 3) == vertex.X)
{
command.XFlags = CommandByte.ByteReadingType.Read1ByteShift1;
bytes.Add((byte)((vertex.X >> 5) & 0xff));
}
else
{
command.XFlags = CommandByte.ByteReadingType.Read2Bytes;
bytes.Add((byte)((vertex.X >> 8) & 0xff));
bytes.Add((byte)(vertex.X & 0xff));
}
}
//Determine y flags
if (((ushort)(vertex.Y << 8) >> 8) == vertex.Y)
{
command.YFlags = CommandByte.ByteReadingType.Read1ByteNoShift;
bytes.Add((byte)(vertex.Y & 0xff));
}
else if ((vertex.Y & 0x03fc) == vertex.Y && ((ushort)(vertex.Y << 6) >> 6) == vertex.Y)
{
command.YFlags = CommandByte.ByteReadingType.Read1ByteShift2;
bytes.Add((byte)((vertex.Y >> 2) & 0xff));
}
else if ((vertex.Y & 0x01fe) == vertex.Y && ((ushort)(vertex.Y << 7) >> 7) == vertex.Y)
{
command.YFlags = CommandByte.ByteReadingType.Read1ByteShift1;
bytes.Add((byte)((vertex.Y >> 1) & 0xff));
}
else
{
command.YFlags = CommandByte.ByteReadingType.Read2Bytes;
bytes.Add((byte)((vertex.Y >> 8) & 0xff));
bytes.Add((byte)(vertex.Y & 0xff));
}
if (!command.UseDefaultZ)
{
//Determine z flags
if (((ushort)(vertex.Z << 8) >> 8) == vertex.Z)
{
command.ZFlags = CommandByte.ByteReadingType.Read1ByteNoShift;
bytes.Add((byte)(vertex.Z & 0xff));
}
else if ((vertex.Z & 0x3fc0) == vertex.Z && ((ushort)(vertex.Z << 2) >> 2) == vertex.Z)
{
command.ZFlags = CommandByte.ByteReadingType.Read1ByteShift2;
bytes.Add((byte)((vertex.Z >> 6) & 0xff));
}
else if ((vertex.Z & 0x1fe0) == vertex.Z && ((ushort)(vertex.Z << 3) >> 3) == vertex.Z)
{
command.ZFlags = CommandByte.ByteReadingType.Read1ByteShift1;
bytes.Add((byte)((vertex.Z >> 5) & 0xff));
}
else
{
command.ZFlags = CommandByte.ByteReadingType.Read2Bytes;
bytes.Add((byte)((vertex.Z >> 8) & 0xff));
bytes.Add((byte)(vertex.Z & 0xff));
}
}
bytes.Insert(0, command.GetAsByte());
output.AddRange(bytes);
return;
}
