internal bool InitializeBuild(BuildContext context, bool fromTarget)
{
Navmesh navmesh = null;
if (fromTarget)
{
if (!CanLoadFromTarget(context, true))
{
return(false);
}
navmesh = BuildTarget.GetNavmesh();
SetConfigFromTargetIntern(navmesh);
}
mIsDirty = true;
// Note: If loading from the target, the tile size was already validated.
// So it won't trigger this adjustment.
if (mConfig.TileSize != 0 &&
mConfig.TileSize < MinAllowedTileSize)
{
string msg = string.Format("Tile size too small. Reverting tile size from"
+ " {0} to 0 (non-tiled). Minimum tile size is {1}"
, mConfig.TileSize, MinAllowedTileSize);
context.LogWarning(msg, this);
mConfig.TileSize = 0;
}
if (mConfig.TileSize == 0)
{
mBuildData.Resize(1, 1);
}
else
{
// Need to check to see if the the build is truly tiled.
int w;
int d = 0;
if (navmesh == null)
{
NMGen.DeriveSizeOfTileGrid(mBoundsMin.ToVector3(), mBoundsMax.ToVector3()
, mConfig.XZCellSize, mConfig.TileSize
, out w, out d);
}
else
{
// Existing navmesh will always be tiled.
w = 2;
}
if (w > 1 || d > 1)
{
mTileSet = TileSetDefinition.Create(mBoundsMin.ToVector3(), mBoundsMax.ToVector3()
, mConfig.GetConfig()
, mInputGeom);
if (mTileSet == null)
{
context.LogError("Create tile build definition: Unexpected error."
+ " Invalid input data or configuration."
, this);
return(false);
}
mBuildData.Resize(mTileSet.Width, mTileSet.Depth);
}
else
{
// Not really tiled.
mBuildData.Resize(1, 1);
}
}
if (navmesh != null)
{
// Need to load the tiles from existing navmesh.
NavmeshTileExtract[] tiles;
NavmeshParams meshConfig;
NavStatus status = Navmesh.ExtractTileData(navmesh.GetSerializedMesh()
, out tiles
, out meshConfig);
if ((status & NavStatus.Failure) != 0)
{
context.LogError("Could not extract the tile data from the target's"
+ " navigation mesh. (Can't initialize from build target.)"
, this);
return(false);
}
foreach (NavmeshTileExtract tile in tiles)
{
int polyCount = tile.header.polyCount;
if (polyCount == 0)
{
continue;
}
int tx = tile.header.tileX;
int tz = tile.header.tileZ;
if (tx >= mBuildData.Width || tz >= mBuildData.Depth)
{
// Shouldn't happen. Probably indicates in internal error
// of some type.
string msg = string.Format("The existing navigation mesh"
+ " contains a tile outside the expected range. Ignoring"
+ " the tile. (Tile: [{0},{1}])"
, tx, tz);
context.LogWarning(msg, this);
continue;
}
mBuildData.SetAsBaked(tx, tz, tile.data, polyCount);
}
}
// Note: Dirty state was set earlier in the code.
return(true);
}