public static void CubeToOffset(ref HexCubeCoordinate c, HexCellOrientation orientation, out OffsetCoordinate o)
{
switch (orientation)
{
case HexCellOrientation.PointyOdd:
CubeToPointyOdd(ref c, out o);
break;
case HexCellOrientation.PointyEven:
CubeToPointyEven(ref c, out o);
break;
case HexCellOrientation.FlatOdd:
CubeToFlatOdd(ref c, out o);
break;
case HexCellOrientation.FlatEven:
CubeToFlatEven(ref c, out o);
break;
default:
CubeToPointyOdd(ref c, out o);
break;
}
}
public void CellsInRange(ref HexCell center, int range, List <HexCell> neighbours)
{
//Return tiles rnage steps from center, http://www.redblobgames.com/grids/hexagons/#range
for (int dx = -range; dx <= range; dx++)
{
for (int dy = Mathf.Max(-range, -dx - range); dy <= Mathf.Min(range, -dx + range); dy++)
{
var o = new HexCubeCoordinate(dx, dy, -dx - dy) + center.coordinates;
if (grid.TryGetValue(o.ToString(), out var cell))
{
neighbours.Add(cell);
}
}
}
}
private static void FlatOddToCube(ref OffsetCoordinate o, out HexCubeCoordinate c)
{
c.x = o.col;
c.z = o.row - (o.col - (o.col & 1)) / 2;
c.y = -c.x - c.z;
}
private static void PointyEvenToCube(ref OffsetCoordinate o, out HexCubeCoordinate c)
{
c.x = o.col - (o.row + (o.row & 1)) / 2;
c.z = o.row;
c.y = -c.x - c.z;
}
public static void OffsetToCube(ref OffsetCoordinate o, HexCellOrientation orientation, out HexCubeCoordinate c)
{
switch (orientation)
{
case HexCellOrientation.PointyOdd:
PointyOddToCube(ref o, out c);
break;
case HexCellOrientation.PointyEven:
PointyEvenToCube(ref o, out c);
break;
case HexCellOrientation.FlatOdd:
FlatOddToCube(ref o, out c);
break;
case HexCellOrientation.FlatEven:
FlatEvenToCube(ref o, out c);
break;
default:
PointyOddToCube(ref o, out c);
break;
}
}
public void GetCubeCoordinates(HexCellOrientation orientation, out HexCubeCoordinate c)
{
OffsetToCube(ref this, orientation, out c);
}
private static void CubeToFlatEven(ref HexCubeCoordinate c, out OffsetCoordinate o)
{
o.row = c.x;
o.col = c.z + (c.x + (c.x & 1)) / 2;
}
private static void CubeToPointyEven(ref HexCubeCoordinate c, out OffsetCoordinate o)
{
o.row = c.z;
o.col = c.x + (c.z + (c.z & 1)) / 2;
}
public void Neighbours(ref HexCubeCoordinate coordinate, List <HexCell> neighbours)
{
CellAt(ref coordinate, out var cell);
Neighbours(ref cell, neighbours);
}
public void CellAt(int x, int z, out HexCell cell)
{
var c = new HexCubeCoordinate(x, z);
CellAt(ref c, out cell);
}
public void CellAt(ref HexCubeCoordinate coordinate, out HexCell cell)
{
grid.TryGetValue(coordinate.ToString(), out cell);
}
public int Distance(HexCubeCoordinate a, HexCubeCoordinate b)
{
return(Mathf.Abs(a.x - b.x) + Mathf.Abs(a.y - b.y) + Mathf.Abs(a.z - b.z));
}
public void CellsInRange(ref HexCubeCoordinate coordinate, int range, List <HexCell> neighbours)
{
CellAt(ref coordinate, out var cell);
CellsInRange(ref cell, range, neighbours);
}
