/// <summary>
/// Check if polygon reference is valid.
/// </summary>
/// <param name="reference">Polygon reference</param>
/// <returns>True if valid</returns>
public bool IsValidPolyRef(PolyId reference)
{
if (reference == PolyId.Null)
{
return(false);
}
int salt, polyIndex, tileIndex;
reference.Decode(polyBits, tileBits, saltBits, out polyIndex, out tileIndex, out salt);
if (tileIndex >= maxTiles)
{
return(false);
}
if (tiles[tileIndex].Salt != salt || tiles[tileIndex].Header == null)
{
return(false);
}
if (polyIndex >= tiles[tileIndex].Header.PolyCount)
{
return(false);
}
return(true);
}
/// <summary>
/// Only use this function if it is known that the provided polygon reference is valid.
/// </summary>
/// <param name="reference">Polygon reference</param>
/// <param name="tile">Resulting tile</param>
/// <param name="poly">Resulting poly</param>
public void TryGetTileAndPolyByRefUnsafe(PolyId reference, out MeshTile tile, out Poly poly)
{
int salt, polyIndex, tileIndex;
reference.Decode(polyBits, tileBits, saltBits, out polyIndex, out tileIndex, out salt);
tile = tiles[tileIndex];
poly = tiles[tileIndex].Polys[polyIndex];
}
/// <summary>
/// Retrieve the endpoints of the offmesh connection at the specified polygon
/// </summary>
/// <param name="prevRef">The previous polygon reference</param>
/// <param name="polyRef">The current polygon reference</param>
/// <param name="startPos">The starting position</param>
/// <param name="endPos">The ending position</param>
/// <returns>True if endpoints found, false if not</returns>
public bool GetOffMeshConnectionPolyEndPoints(PolyId prevRef, PolyId polyRef, ref Vector3 startPos, ref Vector3 endPos)
{
int salt = 0, indexTile = 0, indexPoly = 0;
if (polyRef == PolyId.Null)
{
return(false);
}
//get current polygon
polyRef.Decode(polyBits, tileBits, saltBits, out indexPoly, out indexTile, out salt);
if (indexTile >= maxTiles)
{
return(false);
}
if (tiles[indexTile].Salt != salt || tiles[indexTile].Header == null)
{
return(false);
}
MeshTile tile = tiles[indexTile];
if (indexPoly >= tile.Header.PolyCount)
{
return(false);
}
Poly poly = tile.Polys[indexPoly];
if (poly.PolyType != PolygonType.OffMeshConnection)
{
return(false);
}
int idx0 = 0, idx1 = 1;
//find the link that points to the first vertex
for (int i = poly.FirstLink; i != Link.Null; i = tile.Links[i].Next)
{
if (tile.Links[i].Edge == 0)
{
if (tile.Links[i].Reference != prevRef)
{
idx0 = 1;
idx1 = 0;
}
break;
}
}
startPos = tile.Verts[poly.Verts[idx0]];
endPos = tile.Verts[poly.Verts[idx1]];
return(true);
}
/// <summary>
/// Retrieve the tile and poly based off of a polygon reference
/// </summary>
/// <param name="reference">Polygon reference</param>
/// <param name="tile">Resulting tile</param>
/// <param name="poly">Resulting poly</param>
/// <returns>True if tile and poly successfully retrieved</returns>
public bool TryGetTileAndPolyByRef(PolyId reference, out MeshTile tile, out Poly poly)
{
tile = null;
poly = null;
if (reference == PolyId.Null)
{
return(false);
}
//Get tile and poly indices
int salt, polyIndex, tileIndex;
reference.Decode(polyBits, tileBits, saltBits, out polyIndex, out tileIndex, out salt);
//Make sure indices are valid
if (tileIndex >= maxTiles)
{
return(false);
}
if (tiles[tileIndex].Salt != salt || tiles[tileIndex].Header == null)
{
return(false);
}
if (polyIndex >= tiles[tileIndex].Header.PolyCount)
{
return(false);
}
//Retrieve tile and poly
tile = tiles[tileIndex];
poly = tiles[tileIndex].Polys[polyIndex];
return(true);
}
/// <summary>
/// Retrieve the endpoints of the offmesh connection at the specified polygon
/// </summary>
/// <param name="prevRef">The previous polygon reference</param>
/// <param name="polyRef">The current polygon reference</param>
/// <param name="startPos">The starting position</param>
/// <param name="endPos">The ending position</param>
/// <returns>True if endpoints found, false if not</returns>
public bool GetOffMeshConnectionPolyEndPoints(PolyId prevRef, PolyId polyRef, ref Vector3 startPos, ref Vector3 endPos)
{
int salt = 0, indexTile = 0, indexPoly = 0;
if (polyRef == PolyId.Null)
return false;
//get current polygon
polyRef.Decode(polyBits, tileBits, saltBits, out indexPoly, out indexTile, out salt);
if (indexTile >= maxTiles)
return false;
if (tiles[indexTile].Salt != salt || tiles[indexTile].Header == null)
return false;
MeshTile tile = tiles[indexTile];
if (indexPoly >= tile.Header.PolyCount)
return false;
Poly poly = tile.Polys[indexPoly];
if (poly.PolyType != PolygonType.OffMeshConnection)
return false;
int idx0 = 0, idx1 = 1;
//find the link that points to the first vertex
for (int i = poly.FirstLink; i != Link.Null; i = tile.Links[i].Next)
{
if (tile.Links[i].Edge == 0)
{
if (tile.Links[i].Reference != prevRef)
{
idx0 = 1;
idx1 = 0;
}
break;
}
}
startPos = tile.Verts[poly.Verts[idx0]];
endPos = tile.Verts[poly.Verts[idx1]];
return true;
}
/// <summary>
/// Only use this function if it is known that the provided polygon reference is valid.
/// </summary>
/// <param name="reference">Polygon reference</param>
/// <param name="tile">Resulting tile</param>
/// <param name="poly">Resulting poly</param>
public void TryGetTileAndPolyByRefUnsafe(PolyId reference, out MeshTile tile, out Poly poly)
{
int salt, polyIndex, tileIndex;
reference.Decode(polyBits, tileBits, saltBits, out polyIndex, out tileIndex, out salt);
tile = tiles[tileIndex];
poly = tiles[tileIndex].Polys[polyIndex];
}
/// <summary>
/// Retrieve the tile and poly based off of a polygon reference
/// </summary>
/// <param name="reference">Polygon reference</param>
/// <param name="tile">Resulting tile</param>
/// <param name="poly">Resulting poly</param>
/// <returns>True if tile and poly successfully retrieved</returns>
public bool TryGetTileAndPolyByRef(PolyId reference, out MeshTile tile, out Poly poly)
{
tile = null;
poly = null;
if (reference == PolyId.Null)
return false;
//Get tile and poly indices
int salt, polyIndex, tileIndex;
reference.Decode(polyBits, tileBits, saltBits, out polyIndex, out tileIndex, out salt);
//Make sure indices are valid
if (tileIndex >= maxTiles)
return false;
if (tiles[tileIndex].Salt != salt || tiles[tileIndex].Header == null)
return false;
if (polyIndex >= tiles[tileIndex].Header.PolyCount)
return false;
//Retrieve tile and poly
tile = tiles[tileIndex];
poly = tiles[tileIndex].Polys[polyIndex];
return true;
}
/// <summary>
/// Check if polygon reference is valid.
/// </summary>
/// <param name="reference">Polygon reference</param>
/// <returns>True if valid</returns>
public bool IsValidPolyRef(PolyId reference)
{
if (reference == PolyId.Null)
return false;
int salt, polyIndex, tileIndex;
reference.Decode(polyBits, tileBits, saltBits, out polyIndex, out tileIndex, out salt);
if (tileIndex >= maxTiles)
return false;
if (tiles[tileIndex].Salt != salt || tiles[tileIndex].Header == null)
return false;
if (polyIndex >= tiles[tileIndex].Header.PolyCount)
return false;
return true;
}
