/// <summary>
/// Starting with the existing map generate a random island.
/// <param name="seed">The seed to use to generate the island. Set to null if no specific seed needed.</param>
/// </summary>
void GenerateMap(int?seed)
{
List <Hex> mapFringe = new List <Hex>();
List <Hex> waterFringe = new List <Hex>();
Dictionary <Vector3Int, Hex> mapDict = new Dictionary <Vector3Int, Hex>();
System.Random random;
if (seed != null)
{
random = new System.Random((int)seed);
}
else
{
random = new System.Random();
}
// Generate map fringe
foreach (Hex mapHex in hexes)
{
if (mapHex.neighbors.Count != 6)
{
if (!mapHex.aspectList.Contains(Hex.Aspect.Ocean))
{
mapFringe.Add(mapHex);
}
else
{
waterFringe.Add(mapHex);
}
}
mapDict[mapHex.position] = mapHex;
}
// Generate the land mass
List <GameObject> prefabList = Resources.LoadAll <GameObject>("Prefabs/Hexes/Land").ToList();
for (int i = 0; i < generatedMapSize; ++i)
{
int hexIndex = random.Next(mapFringe.Count);
Hex hex = mapFringe[hexIndex];
Hex newHex = CreateHex(prefabList[random.Next(prefabList.Count)], hex.OpenNeighbors()[random.Next(6 - hex.neighbors.Count)]);
mapDict[newHex.position] = newHex;
foreach (Vector3Int direction in neighborDirections[newHex.z])
{
Hex neighborHex;
if (mapDict.TryGetValue(newHex.Plus(direction), out neighborHex))
{
newHex.AddNeighborBidirectional(neighborHex);
if (neighborHex.neighbors.Count == 6)
{
mapFringe.Remove(neighborHex);
}
}
}
if (newHex.neighbors.Count < 6)
{
mapFringe.Add(newHex);
}
}
// Generate shallow water around land mass
prefabList = Resources.LoadAll <GameObject>("Prefabs/Hexes/Water/Shallow").ToList();
while (mapFringe.Count != 0)
{
Hex fringeHex = mapFringe[mapFringe.Count - 1];
foreach (Vector3Int location in fringeHex.OpenNeighbors())
{
Hex newHex = CreateHex(prefabList[random.Next(prefabList.Count)], location);
mapDict[newHex.position] = newHex;
foreach (Vector3Int direction in neighborDirections[newHex.z])
{
Hex neighborHex;
if (mapDict.TryGetValue(newHex.Plus(direction), out neighborHex))
{
newHex.AddNeighborBidirectional(neighborHex);
if (neighborHex.neighbors.Count == 6)
{
mapFringe.Remove(neighborHex);
}
}
}
if (newHex.neighbors.Count < 6)
{
waterFringe.Add(newHex);
}
}
}
// Generate deep water around land mass
prefabList = Resources.LoadAll <GameObject>("Prefabs/Hexes/Water/Deep").ToList();
while (waterFringe.Count != 0)
{
Hex fringeHex = waterFringe[waterFringe.Count - 1];
foreach (Vector3Int location in fringeHex.OpenNeighbors())
{
Hex newHex = CreateHex(prefabList[random.Next(prefabList.Count)], location);
mapDict[newHex.position] = newHex;
foreach (Vector3Int direction in neighborDirections[newHex.z])
{
Hex neighborHex;
if (mapDict.TryGetValue(newHex.Plus(direction), out neighborHex))
{
newHex.AddNeighborBidirectional(neighborHex);
if (neighborHex.neighbors.Count == 6)
{
waterFringe.Remove(neighborHex);
}
}
}
}
waterFringe.Remove(fringeHex);
}
}
