/// <summary>
/// Return data about the tile at the specified position.
/// </summary>
public bool TryGetTile(HexCoords tileCoords, out HexTileData data)
{
data = FindTileForCoords(tileCoords);
return(data != null);
}
/// <summary>
/// Returns the chunk for the tile at the specified coordinates, or
/// null if none exists.
/// </summary>
public HexChunk FindChunkForCoordinates(HexCoords coordinates)
{
return(Chunks.Where(c => c.Tiles.Where(tile => tile.Coordinates == coordinates).Any())
.FirstOrDefault());
}
/// <summary>
/// Returns whether or not the specified tile exists.
/// </summary>
public bool ContainsTile(HexCoords tileCoords)
{
return(FindTileForCoords(tileCoords) != null);
}
/// <summary>
/// Returns the tile at the specified coordinates, or null
/// if none exists.
/// </summary>
private HexTileData FindTileForCoords(HexCoords coords)
{
return(Tiles
.Where(t => t.Position.Coordinates == coords)
.FirstOrDefault());
}
/// <summary>
/// Generate the top for the hex tile, assiging its vertices, triangles and UVs to the supplied lists.
/// </summary>
private static void GenerateTop(HexCoords position, List <Vector3> vertices, List <int> triangles, List <Vector2> uv, float diameter)
{
var uvBasePos = HexCoordsToUV(position);
vertices.AddRange(HexMetrics.GetHexVertices(diameter));
// Each third tile needs a UV seam through the middle of it for textures to loop properly.
var offsetCoords = position.ToOffset();
if (offsetCoords.x % 2 == 0 && offsetCoords.y % 3 == 0)
{
vertices.Insert(4, vertices[0]);
vertices.Insert(5, vertices[3]);
triangles.AddRange(new int[]
{
// Start with the preset triangles for the hex top.
0, 1, 2,
0, 2, 3,
4, 5, 7,
7, 5, 6
});
for (var i = 0; i < vertices.Count; i++)
{
float uvY;
if (i == 0 || i == 3)
{
uvY = 0.0f;
}
else if (i == 5 || i == 4)
{
uvY = -0.5f;
}
else
{
var relativeVertexPosInUVSpace = vertices[i].z / diameter * hexWidthUV;
uvY = -Utils.Mod(((uvBasePos.y + relativeVertexPosInUVSpace) / HexMetrics.hexHeightToWidth / 2), 0.5f);
}
uv.Add(new Vector2(
-(uvBasePos.x + vertices[i].x / diameter * hexWidthUV),
uvY));
}
}
else
{
triangles.AddRange(new int[]
{
// Start with the preset triangles for the hex top.
0, 1, 2,
0, 2, 3,
0, 3, 5,
5, 3, 4
});
for (var i = 0; i < vertices.Count; i++)
{
var relativeVertexPosInUVSpace = vertices[i].z / diameter * hexWidthUV;
float uvY;
// Sometimes due to rounding the UV coordinate can end up on the wrong side of the texture
// for tiles at the edges of the texture. This will ensure that they appear on the correct
// side.
if ((offsetCoords.x % 2 != 0 && (offsetCoords.y + 1) % 3 == 0) && (i == 1 || i == 2))
{
uvY = -0.5f;
}
else if (offsetCoords.x % 2 != 0 && offsetCoords.y % 3 == 0 && (i == 4 || i == 5))
{
uvY = 0f;
}
else
{
uvY = -Utils.Mod(((uvBasePos.y + relativeVertexPosInUVSpace) / HexMetrics.hexHeightToWidth / 2), 0.5f);
}
uv.Add(new Vector2(
-(uvBasePos.x + vertices[i].x / diameter * hexWidthUV),
uvY));
}
}
}
public HexPosition(HexCoords coordinates, float elevation)
{
Coordinates = coordinates;
Elevation = elevation;
}
public HexPosition()
{
Coordinates = new HexCoords(0, 0);
Elevation = 0f;
}
/// <summary>
/// Remove a tile from this chunk.
/// </summary>
internal void RemoveTile(HexCoords coords)
{
tiles.RemoveAll(tile => tile.Coordinates.Equals(coords));
Dirty = true;
}