public static LayerDataPacket CreateLayerDataPacket(TerrainPatch[] patches, TerrainPatch.LayerType type)
{
LayerDataPacket layer = new LayerDataPacket {
LayerID = { Type = (byte)type }
};
TerrainPatch.GroupHeader header = new TerrainPatch.GroupHeader
{
Stride = STRIDE,
PatchSize = 16,
Type = type
};
// Should be enough to fit even the most poorly packed data
byte[] data = new byte[patches.Length * 16 * 16 * 2];
BitPack bitpack = new BitPack(data, 0);
bitpack.PackBits(header.Stride, 16);
bitpack.PackBits(header.PatchSize, 8);
bitpack.PackBits((int)header.Type, 8);
foreach (TerrainPatch t in patches)
{
CreatePatch(bitpack, t.Data, t.X, t.Y);
}
bitpack.PackBits(END_OF_PATCHES, 8);
layer.LayerData.Data = new byte[bitpack.BytePos + 1];
Buffer.BlockCopy(bitpack.Data, 0, layer.LayerData.Data, 0, bitpack.BytePos + 1);
return(layer);
}
private void LayerDataHandler(object sender, PacketReceivedEventArgs e)
{
LayerDataPacket layer = (LayerDataPacket)e.Packet;
BitPack bitpack = new BitPack(layer.LayerData.Data, 0);
TerrainPatch.GroupHeader header = new TerrainPatch.GroupHeader();
TerrainPatch.LayerType type = (TerrainPatch.LayerType)layer.LayerID.Type;
// Stride
header.Stride = bitpack.UnpackBits(16);
// Patch size
header.PatchSize = bitpack.UnpackBits(8);
// Layer type
header.Type = (TerrainPatch.LayerType)bitpack.UnpackBits(8);
switch (type)
{
case TerrainPatch.LayerType.Land:
if (m_LandPatchReceivedEvent != null || Client.Settings.STORE_LAND_PATCHES)
{
DecompressLand(e.Simulator, bitpack, header);
}
break;
case TerrainPatch.LayerType.Water:
Logger.Log("Got a Water LayerData packet, implement me!", Helpers.LogLevel.Error, Client);
break;
case TerrainPatch.LayerType.Wind:
DecompressWind(e.Simulator, bitpack, header);
break;
case TerrainPatch.LayerType.Cloud:
DecompressCloud(e.Simulator, bitpack, header);
break;
default:
Logger.Log("Unrecognized LayerData type " + type.ToString(), Helpers.LogLevel.Warning, Client);
break;
}
}