public List <HexCoordinate> GetRingAroundHex(int ringNumber)
{
var ring = new List <HexCoordinate>();
HexCoordinate tempCoordinate = this;
// We start off by going north to the correct ring, and then adding it to our list
for (int i = 0; i < ringNumber; i++)
{
tempCoordinate = tempCoordinate.North();
}
ring.Add(tempCoordinate);
// After that, we proceed to go clockwise around the ring until we come back to the start
for (int i = 0; i < ringNumber; i++)
{
tempCoordinate = tempCoordinate.SouthEast();
// If the ring is an odd number, you need to re-align the coordinates back to where whey should be
if (IntExtensions.IsOdd(i))
{
tempCoordinate = tempCoordinate.North();
}
ring.Add(tempCoordinate);
}
// The rightmost segment is easy because we can go straight down the required number of times
for (int i = 0; i < ringNumber; i++)
{
tempCoordinate = tempCoordinate.South();
ring.Add(tempCoordinate);
}
// We utilize Current Ring - 1 because we only want this to run on rings that are greater than 1
for (int i = 0; i < ringNumber - 1; i++)
{
if (ringNumber.IsEven())
{
if (i.IsEven())
{
tempCoordinate = tempCoordinate.SouthWest();
}
else
{
tempCoordinate = tempCoordinate.West();
}
}
else
{
if (i.IsEven())
{
tempCoordinate = tempCoordinate.West();
}
else
{
tempCoordinate = tempCoordinate.SouthWest();
}
}
ring.Add(tempCoordinate);
}
// Coming into this statement, we are now at the bottom 3 coordinates.
// Since our grid is laid out vertically, we can assume that these three hexes will be directly west of each other
// So we only have to go west twice to make our way to the next segment
for (int i = 0; i < 2; i++)
{
tempCoordinate = tempCoordinate.West();
ring.Add(tempCoordinate);
}
// We utilize Current Ring - 1 because we only want this to run on rings that are greater than 1
for (int i = 0; i < ringNumber - 1; i++)
{
if (i.IsEven())
{
tempCoordinate = tempCoordinate.NorthWest();
}
else
{
tempCoordinate = tempCoordinate.West();
}
ring.Add(tempCoordinate);
}
// The left most segment is easy because we can just go straight up
for (int i = 0; i < ringNumber; i++)
{
tempCoordinate = tempCoordinate.North();
ring.Add(tempCoordinate);
}
// We utilize Current Ring - 1 because we only want this to run on rings that are greater than 1
for (int i = 0; i < ringNumber - 1; i++)
{
if (ringNumber.IsEven())
{
if (i.IsEven())
{
tempCoordinate = tempCoordinate.East();
}
else
{
tempCoordinate = tempCoordinate.NorthEast();
}
}
else
{
if (i.IsEven())
{
tempCoordinate = tempCoordinate.NorthEast();
}
else
{
tempCoordinate = tempCoordinate.East();
}
}
ring.Add(tempCoordinate);
}
return(ring);
}
