private static StartRiverMidMap?GenerateSineSection(MapPoint _startPoint, bool _endAtEdge = true)
{
float curveAmplitude = UnityEngine.Random.Range(1F, 4F); //
float curveFrequency = 7F;
int randomCurveEnd = Mathf.FloorToInt(GenerationManager.instance.Width * UnityEngine.Random.Range(0.4F, 0.8F));
float randomSineStartPoint = UnityEngine.Random.Range(-180, 180);
int progress = 1;
int thick = 2;
map.AddTile(WaterTile, _startPoint);
MapPoint currentPoint = _startPoint;
int xDirection = 0;
int yDirection = 0;
if (_startPoint.x == 0)
{
xDirection = 1;
}
else if (_startPoint.x == GenerationManager.instance.Width)
{
xDirection = -1;
}
if (_startPoint.y == 0)
{
yDirection = 1;
}
else if (_startPoint.y == GenerationManager.instance.Height)
{
yDirection = -1;
}
//ApplyThicknessToRiver(currentPoint, thick, xDirection, yDirection);
CreateNoiseBlob.CreateBlobAtPosition(map, currentPoint, thick, WaterTile);
float locationTrack = Mathf.Abs((currentPoint.x * xDirection) + (currentPoint.y * yDirection));
while (progress < GenerationManager.instance.Width)
{
float pointInDegrees = (locationTrack + randomSineStartPoint); //y = sin(x)
float xWithFreq = pointInDegrees / curveFrequency;
float holdSinX = Mathf.Sin(xWithFreq);
int sineHeight = Mathf.RoundToInt(holdSinX * curveAmplitude / 2); //SineHeight is Y in y = sin(x)
//int sineHeight = Mathf.RoundToInt(holdSinX * curveStrech * (curveStrech / curveFrequency)); //SineHeight is Y in y = sin(x)
//int sineHeight = Mathf.RoundToInt(holdSinX * curveStrech - curveFrequency); //- curve frequency makes the river diagonal
currentPoint.x = currentPoint.x + xDirection + (sineHeight * yDirection);
currentPoint.y = currentPoint.y + yDirection + (sineHeight * xDirection);
map.AddTile(WaterTile, currentPoint);
//ApplyThicknessToRiver(currentPoint, thick, xDirection, yDirection);
CreateNoiseBlob.CreateBlobAtPosition(map, currentPoint, thick, WaterTile);
locationTrack = Mathf.Abs((currentPoint.x * xDirection) + (currentPoint.y * yDirection));
progress++;
if (!_endAtEdge)
{
if (progress >= randomCurveEnd)
{
progress = int.MaxValue;
}
}
}
if (_endAtEdge)
{
return(null);
}
else
{
StartRiverMidMap srmm = new StartRiverMidMap();
srmm.startPoint = currentPoint;
srmm.thickness = thick;
srmm.xDirection = xDirection;
srmm.yDirection = yDirection;
return(srmm);
}
}
public static void GenerateStraightSection(MapPoint _startPoint, bool _endAtEdge = true, int _xDirection = 0, int _yDirection = 0)
{
int thick = 3;
int seed = UnityEngine.Random.Range(1000, 10000);
int randomCurveEnd = Mathf.FloorToInt(GenerationManager.instance.Width * UnityEngine.Random.Range(0.4F, 0.8F));
int progress = 1;
map.AddTile(WaterTile, _startPoint);
MapPoint currentPoint = _startPoint;
int xDirection = _xDirection;
int yDirection = _yDirection;
if (xDirection == 0 && yDirection == 0)
{
if (_startPoint.x == 0)
{
xDirection = 1;
}
else if (_startPoint.x == GenerationManager.instance.Width)
{
xDirection = -1;
}
if (_startPoint.y == 0)
{
yDirection = 1;
}
else if (_startPoint.y == GenerationManager.instance.Height)
{
yDirection = -1;
}
}
ApplyThicknessToRiver(currentPoint, thick, xDirection, yDirection);
bool generating = true;
while (generating)
{
float xCoord = currentPoint.x / ((float)GenerationManager.instance.Width * 4) * seed;
float yCoord = currentPoint.y / ((float)GenerationManager.instance.Height * 4) * seed;
float perlin = Mathf.PerlinNoise(xCoord, yCoord);
float floatChange = (perlin * 3F) - 1F; // range is now between -1 and 1
int change = Mathf.FloorToInt(floatChange); //-1, 0 or 1
currentPoint.x = currentPoint.x + xDirection + (change * yDirection);
currentPoint.y = currentPoint.y + yDirection + (change * xDirection);
map.AddTile(WaterTile, currentPoint);
//ApplyThicknessToRiver(currentPoint, thick, xDirection, yDirection);
CreateNoiseBlob.CreateBlobAtPosition(map, currentPoint, thick, WaterTile);
progress++;
if (!_endAtEdge)
{
if (progress >= randomCurveEnd)
{
generating = false;
}
}
else if (currentPoint.x < 0 || currentPoint.y < 0 || currentPoint.x > GenerationManager.instance.Width - 1 || currentPoint.y > GenerationManager.instance.Height - 1)
{
generating = false;
}
}
}