void GenerateElevationMap()
{
for (int i = 0; i < elevationMap.GetLength(0); i++)
{
for (int j = 0; j < elevationMap.GetLength(1); j++)
{
elevationMap[i, j] = new ChunkElevation(
generatorMatrix[i, j].Next(mapGenerationData.maxElevation),
new IntegerPair(generatorMatrix[i, j].Next(chunkTileWidth), generatorMatrix[i, j].Next(chunkTileWidth)));
}
}
}
public void Add(ChunkElevation elevation)
{
int index = 0;
for (int i = 0; i < lowestToHighest.Count; i++)
{
if (elevation.Mean < lowestToHighest[i].Mean)
{
index = i;
}
}
lowestToHighest.Insert(index, elevation);
}
public OrderedElevationList(ChunkElevation elevation)
{
lowestToHighest = new List <ChunkElevation>();
lowestToHighest.Add(elevation);
}
void GenerateRiverValleys(GameObject[,] chunkMap)
{
ClearBinaryMatrix();
for (int i = 0; i < elevationMap.GetLength(0); i++)
{
for (int j = 0; j < elevationMap.GetLength(1); j++)
{
RiverValley riverValley;
ChunkElevation centerElevation;
ChunkElevation northElevation;
ChunkElevation eastElevation;
ChunkElevation southElevation;
ChunkElevation westElevation;
OrderedElevationList adjacentRiverValleys = new OrderedElevationList();
centerElevation = elevationMap[i, j];
if (j < elevationMap.GetLength(1) - 1)
{
northElevation = elevationMap[i, j + 1];
if (northElevation.Mean < mapGenerationData.valleyElevationMaximum)
{
adjacentRiverValleys.Add(northElevation);
}
}
else
{
northElevation = new ChunkElevation();
}
if (i < elevationMap.GetLength(0) - 1)
{
eastElevation = elevationMap[i + 1, j];
if (eastElevation.Mean < mapGenerationData.valleyElevationMaximum)
{
adjacentRiverValleys.Add(eastElevation);
}
}
else
{
eastElevation = new ChunkElevation();
}
if (j > 0)
{
southElevation = elevationMap[i, j - 1];
if (southElevation.Mean < mapGenerationData.valleyElevationMaximum)
{
adjacentRiverValleys.Add(southElevation);
}
}
else
{
southElevation = new ChunkElevation();
}
if (i > 0)
{
westElevation = elevationMap[i - 1, j];
if (westElevation.Mean < mapGenerationData.valleyElevationMaximum)
{
adjacentRiverValleys.Add(westElevation);
}
}
else
{
westElevation = new ChunkElevation();
}
// if below elevation threshold and there's adjacent river valleys, assume center chunk has a river valley
if (centerElevation.Mean < mapGenerationData.valleyElevationMaximum && adjacentRiverValleys.Count != 0)
{
IntegerPair start;
IntegerPair end;
ChunkElevation lowest;
riverValley = new RiverValley(true);
//if center lowest
// main.end = center.slope
// main.start = toward lowest edge.slope
// branch.end = center.slope
// branch.start = toward branch edge.slope
//
//if center highest ie. multiple main starts
//
// main.end = toward lowest edge.slope
// main.start = toward centre.slope
// branch.start = toward center.slope
// branch.end = toward branch edge.slope
//
//if no adjacent river valleys
// nothing
//
//if one adjacent lower valley
// either center lowest or highest for main
// no branches
//
//multiple adjacent valleys
// main.end = toward lowest edge.slope
// main.start = toward second lowest edge.slope
// branch.end = center.slope
// branch.start = toward branch edge.slope
lowest = adjacentRiverValleys.PickLowest;
if (centerElevation.Mean <= lowest.Mean)
{
if (lowest == northElevation)
{
start = new IntegerPair(Mathf.RoundToInt((centerElevation.Slope.X + northElevation.Slope.X) / 2), chunkTileWidth - 1);
}
else if (lowest == eastElevation)
{
start = new IntegerPair(chunkTileWidth - 1, Mathf.RoundToInt((centerElevation.Slope.Y + northElevation.Slope.Y) / 2));
}
else if (lowest == southElevation)
{
start = new IntegerPair(Mathf.RoundToInt((centerElevation.Slope.X + northElevation.Slope.X) / 2), 0);
}
else if (lowest == westElevation)
{
start = new IntegerPair(0, Mathf.RoundToInt((centerElevation.Slope.Y + northElevation.Slope.Y) / 2));
}
else
{
Debug.Log("No adjacent elevation matching lowest found, blank IntegerPair returned.");
start = new IntegerPair();
}
end = centerElevation.Slope;
}
else
{
if (lowest == northElevation)
{
end = new IntegerPair(Mathf.RoundToInt((centerElevation.Slope.X + northElevation.Slope.X) / 2), chunkTileWidth - 1);
}
else if (lowest == eastElevation)
{
end = new IntegerPair(chunkTileWidth - 1, Mathf.RoundToInt((centerElevation.Slope.Y + northElevation.Slope.Y) / 2));
}
else if (lowest == southElevation)
{
end = new IntegerPair(Mathf.RoundToInt((centerElevation.Slope.X + northElevation.Slope.X) / 2), 0);
}
else if (lowest == westElevation)
{
end = new IntegerPair(0, Mathf.RoundToInt((centerElevation.Slope.Y + northElevation.Slope.Y) / 2));
}
else
{
Debug.Log("No adjacent elevation matching lowest found, blank IntegerPair returned.");
end = new IntegerPair();
}
start = centerElevation.Slope;
}
riverValley.AddMain(start, end);
while (adjacentRiverValleys.Count > 0)
{
lowest = adjacentRiverValleys.PickLowest;
if (centerElevation.Mean <= lowest.Mean)
{
if (lowest == northElevation)
{
start = new IntegerPair(
Mathf.RoundToInt((centerElevation.Slope.X + northElevation.Slope.X) / 2),
chunkTileWidth - 1);
}
else if (lowest == eastElevation)
{
start = new IntegerPair(
chunkTileWidth - 1,
Mathf.RoundToInt((centerElevation.Slope.Y + northElevation.Slope.Y) / 2));
}
else if (lowest == southElevation)
{
start = new IntegerPair(
Mathf.RoundToInt((centerElevation.Slope.X + northElevation.Slope.X) / 2),
0);
}
else if (lowest == westElevation)
{
start = new IntegerPair(
0,
Mathf.RoundToInt((centerElevation.Slope.Y + northElevation.Slope.Y) / 2));
}
else
{
Debug.Log("No adjacent elevation matching lowest found, blank IntegerPair returned.");
start = new IntegerPair();
}
end = centerElevation.Slope;
}
else
{
if (lowest == northElevation)
{
end = new IntegerPair(Mathf.RoundToInt((centerElevation.Slope.X + northElevation.Slope.X) / 2), Mathf.RoundToInt((centerElevation.Slope.Y + chunkTileWidth - 1) / 2));
}
else if (lowest == eastElevation)
{
end = new IntegerPair(Mathf.RoundToInt((centerElevation.Slope.X + chunkTileWidth - 1) / 2), Mathf.RoundToInt((centerElevation.Slope.Y + northElevation.Slope.Y) / 2));
}
else if (lowest == southElevation)
{
end = new IntegerPair(Mathf.RoundToInt((centerElevation.Slope.X + northElevation.Slope.X) / 2), Mathf.RoundToInt((centerElevation.Slope.Y) / 2));
}
else if (lowest == westElevation)
{
end = new IntegerPair(Mathf.RoundToInt((centerElevation.Slope.X) / 2), Mathf.RoundToInt((centerElevation.Slope.Y + northElevation.Slope.Y) / 2));
}
else
{
Debug.Log("No adjacent elevation matching lowest found, blank IntegerPair returned.");
end = new IntegerPair();
}
start = centerElevation.Slope;
}
riverValley.AddSource(start, end);
}
}
else
{
riverValley = new RiverValley(false);
}
if (riverValley.Exists)
{
if (riverValley.Main.Exists)
{
//Draw Main Branch
DrawRiver(
new IntegerPair(chunkTileWidth * i + riverValley.Main.Start.X, chunkTileWidth * j + riverValley.Main.Start.Y),
new IntegerPair(chunkTileWidth * i + riverValley.Main.End.X, chunkTileWidth * j + riverValley.Main.End.Y),
generatorMatrix[i, j]);
}
for (int source = 0; source < riverValley.SourceCount; source++)
{
DrawRiver(
new IntegerPair(chunkTileWidth * i + riverValley.Source(source).Start.X, chunkTileWidth * j + riverValley.Source(source).Start.Y),
new IntegerPair(chunkTileWidth * i + riverValley.Source(source).End.X, chunkTileWidth * j + riverValley.Source(source).End.Y),
generatorMatrix[i, j]);
}
}
}
}
//SmoothShapeEdges();
ApplyBinaryMatrixToMap(chunkMap, mapGenerationData.waterTilePrefab);
}