public Status Init(NavMeshBuilder data, int flags)
{
if (data.Header.Magic != Helper.NavMeshMagic)
{
throw new ArgumentException("Wrong Magic Number");
}
if (data.Header.Version != Helper.NavMeshVersion)
{
throw new ArgumentException("Wrong Version Number");
}
NavMeshParams param = new NavMeshParams();
Array.Copy(data.Header.BMin, param.Orig, 3);
param.TileWidth = data.Header.BMax[0] - data.Header.BMin[0];
param.TileHeight = data.Header.BMax[2] - data.Header.BMin[2];
param.MaxTiles = 1;
param.MaxPolys = data.Header.PolyCount;
Status status = Init(param);
if ((status & Status.Failure) == Status.Failure)
{
return(status);
}
long temp = 0;
return(AddTile(data, flags, 0, ref temp));
}
public Status RemoveTile(long refId, out NavMeshBuilder data)
{
data = null;
if (refId == 0)
{
return(Status.Failure | Status.InvalidParam);
}
long tileIndex = DecodePolyIdTile(refId);
long tileSalt = DecodePolyIdSalt(refId);
if (tileIndex >= _maxTiles)
{
return(Status.Failure | Status.InvalidParam);
}
MeshTile tile = _tiles[tileIndex];
if (tile.Salt != tileSalt)
{
return(Status.Failure | Status.InvalidParam);
}
int h = ComputeTileHash(tile.Header.X, tile.Header.Y, _tileLutMask);
MeshTile prev = null;
MeshTile cur = _posLookup[h];
while (cur != null)
{
if (cur == tile)
{
if (prev != null)
{
prev.Next = cur.Next;
}
else
{
_posLookup[h] = cur.Next;
}
break;
}
prev = cur;
cur = cur.Next;
}
int MaxNeis = 32;
MeshTile[] neis = new MeshTile[MaxNeis];
int nneis;
nneis = GetTilesAt(tile.Header.X, tile.Header.Y, ref neis, MaxNeis);
for (int j = 0; j < nneis; j++)
{
if (neis[j] == tile)
{
continue;
}
MeshTile temp = neis[j];
UnconnectExtLinks(ref temp, ref tile);
}
for (int i = 0; i < 8; i++)
{
nneis = GetNeighborTilesAt(tile.Header.X, tile.Header.Y, i, ref neis, MaxNeis);
for (int j = 0; j < nneis; j++)
{
MeshTile temp = neis[j];
UnconnectExtLinks(ref temp, ref tile);
}
}
// reset tile
if ((tile.Flags & TileFreeData) != 0)
{
tile.Data = null;
}
else
{
data = tile.Data;
}
tile.Header = null;
tile.Flags = 0;
tile.LinksFreeList = 0;
tile.Polys = null;
tile.Verts = null;
tile.Links = null;
tile.DetailMeshes = null;
tile.DetailVerts = null;
tile.DetailTris = null;
tile.BVTree = null;
tile.OffMeshCons = null;
tile.Salt = (tile.Salt + 1) & ((1 << (int)_saltBits) - 1);
if (tile.Salt == 0)
{
tile.Salt++;
}
tile.Next = _nextFree;
_nextFree = tile;
return(Status.Success);
}
public Status AddTile(NavMeshBuilder data, int flags, long lastRef, ref long result)
{
MeshHeader header = data.Header;
if (header.Magic != Helper.NavMeshMagic)
{
return(Status.Failure | Status.WrongMagic);
}
if (header.Version != Helper.NavMeshVersion)
{
return(Status.Failure | Status.WrongVersion);
}
if (GetTileAt(header.X, header.Y, header.Layer) != null)
{
return(Status.Failure);
}
MeshTile tile = null;
if (lastRef == 0)
{
if (_nextFree != null)
{
tile = _nextFree;
_nextFree = tile.Next;
tile.Next = null;
}
}
else
{
int tileIndex = (int)DecodePolyIdTile(lastRef);
if (tileIndex >= _maxTiles)
{
return(Status.Failure | Status.OutOfMemory);
}
MeshTile target = _tiles[tileIndex];
MeshTile prev = null;
tile = _nextFree;
while (tile != null && tile != target)
{
prev = tile;
tile = tile.Next;
}
if (tile != target)
{
return(Status.Failure | Status.OutOfMemory);
}
if (prev != null)
{
_nextFree = tile.Next;
}
else
{
prev.Next = tile.Next;
}
tile.Salt = DecodePolyIdSalt(lastRef);
}
if (tile == null)
{
return(Status.Failure | Status.OutOfMemory);
}
// insert tile into the position
int h = ComputeTileHash(header.X, header.Y, _tileLutMask);
tile.Next = _posLookup[h];
_posLookup[h] = tile;
tile.Verts = data.NavVerts;
tile.Polys = data.NavPolys;
tile.Links = data.NavLinks;
tile.DetailMeshes = data.NavDMeshes;
tile.DetailVerts = data.NavDVerts;
tile.DetailTris = data.NavDTris;
tile.BVTree = data.NavBvTree;
tile.OffMeshCons = data.OffMeshCons;
tile.LinksFreeList = 0;
tile.Links[header.MaxLinkCount - 1].Next = NullLink;
for (int i = 0; i < header.MaxLinkCount - 1; i++)
{
tile.Links[i].Next = i + 1;
}
tile.Data = data;
tile.Header = header;
tile.Flags = flags;
ConnectIntLinks(tile);
BaseOffMeshLinks(tile);
int MaxNeis = 32;
MeshTile[] neis = new MeshTile[MaxNeis];
int nneis;
nneis = GetTilesAt(header.X, header.Y, ref neis, MaxNeis);
for (int j = 0; j < nneis; j++)
{
MeshTile temp = neis[j];
if (neis[j] != tile)
{
ConnectExtLinks(ref tile, ref temp, -1);
ConnectExtLinks(ref temp, ref tile, -1);
}
ConnectExtOffMeshLinks(ref tile, ref temp, -1);
ConnectExtOffMeshLinks(ref temp, ref tile, -1);
}
for (int i = 0; i < 8; i++)
{
nneis = GetNeighborTilesAt(header.X, header.Y, i, ref neis, MaxNeis);
for (int j = 0; j < nneis; j++)
{
MeshTile temp = neis[j];
ConnectExtLinks(ref tile, ref temp, i);
ConnectExtLinks(ref temp, ref tile, Helper.OppositeTile(i));
ConnectExtOffMeshLinks(ref tile, ref temp, i);
ConnectExtOffMeshLinks(ref temp, ref tile, Helper.OppositeTile(i));
}
}
result = GetTileRef(tile);
return(Status.Success);
}