public void Init(TileCacheParams tcparams, TileCacheMeshProcess tmproc)
{
m_params = tcparams;
m_tmproc = tmproc;
// Alloc space for obstacles.
m_obstacles = new TileCacheObstacle[tcparams.MaxObstacles];
m_nextFreeObstacle = -1;
for (int i = tcparams.MaxObstacles - 1; i >= 0; i--)
{
m_obstacles[i] = new TileCacheObstacle
{
Salt = 1,
Next = m_nextFreeObstacle
};
m_nextFreeObstacle = i;
}
// Init tiles
var m_tileLutSize = Helper.NextPowerOfTwo(tcparams.MaxTiles / 4);
if (m_tileLutSize == 0)
{
m_tileLutSize = 1;
}
m_tileLutMask = m_tileLutSize - 1;
m_tiles = new CompressedTile[tcparams.MaxTiles];
m_posLookup = new CompressedTile[m_tileLutSize];
for (int i = tcparams.MaxTiles - 1; i >= 0; i--)
{
m_tiles[i] = new CompressedTile
{
Salt = 1,
Next = m_nextFreeTile
};
m_nextFreeTile = m_tiles[i];
}
// Init ID generator values.
m_tileBits = (int)Math.Log(Helper.NextPowerOfTwo(tcparams.MaxTiles), 2);
// Only allow 31 salt bits, since the salt mask is calculated using 32bit uint and it will overflow.
m_saltBits = Math.Min(31, 32 - m_tileBits);
if (m_saltBits < 10)
{
throw new EngineException("NavMesh DT_INVALID_PARAM");
}
}
/// <summary>
/// Creates a navigation mesh from a navigation mesh file
/// </summary>
/// <param name="file">Navigation mesh file</param>
/// <returns>Returns the navigation mesh</returns>
public static NavMesh FromNavmeshFile(NavMeshFile file)
{
NavMesh navmesh = new NavMesh();
navmesh.Init(file.NavMeshParams);
for (int i = 0; i < file.NavMeshData.Count; i++)
{
var tile = file.NavMeshData[i];
if (tile == null || tile.Header.Magic != Detour.DT_NAVMESH_MAGIC)
{
continue;
}
navmesh.AddTile(tile, TileFlagTypes.DT_TILE_FREE_DATA, 0, out int res);
}
if (file.HasTileCache)
{
var tmproc = new TileCacheMeshProcess(null);
navmesh.TileCache = new TileCache();
navmesh.TileCache.Init(file.TileCacheParams, tmproc);
for (int i = 0; i < file.TileCacheData.Count; i++)
{
var tile = file.TileCacheData[i];
if (tile.Header.Magic != DetourTileCache.DT_TILECACHE_MAGIC)
{
continue;
}
navmesh.TileCache.AddTile(tile, CompressedTileFlagTypes.DT_COMPRESSEDTILE_FREE_DATA);
}
}
return(navmesh);
}
