public void createLine(Point a, Point b, int radius, ref Area area)
{
Queue<Point> points = new Queue<Point>();
HashSet<Point> expandPoints = new HashSet<Point>();
//PagedArray2D<bool> tiles = new PagedArray2D<bool>(false);
Point[] expandDirections = new Point[]
{
new Point(1, 0),
new Point(-1, 0),
new Point(0, 1),
new Point(0, -1)
};
bool steep = (Math.Abs(b.Y - a.Y) > Math.Abs(b.X - a.X));
if (steep)
{
a = new Point(a.Y, a.X);
b = new Point(b.Y, b.X);
}
if (a.X > b.X)
{
Point temp = a;
a = b;
b = temp;
}
Point delta = new Point(b.X - a.X, Math.Abs(b.Y - a.Y));
float error = delta.X / 2f;
int yStep = (a.Y < b.Y) ? 1 : -1;
int y = a.Y;
for (int x = a.X; x < b.X; ++x)
{
Point point;
if (steep)
point = new Point(y, x);
else
point = new Point(x, y);
points.Enqueue(point);
expandPoints.Add(point);
error -= delta.Y;
if (error < 0)
{
y += yStep;
error += delta.X;
}
}
for (int i = 0; i < radius; ++i)
{
int size = points.Count;
for (int j = 0; j < size; ++j)
{
Point point = points.Dequeue();
area[point.X, point.Y] = true;
expandPoints.Remove(point);
foreach(Point p in expandDirections)
{
Point newPoint = point + p;
if (p.X < 0 || p.Y < 0 || p.X >= tileMap.Size.x || p.Y >= tileMap.Size.y)
continue;
if (expandPoints.Contains(newPoint))
continue;
points.Enqueue(newPoint);
expandPoints.Add(newPoint);
}
}
}
}
public void replaceArea(Area area, UInt16 TileIDA, UInt16 TileIDB)
{
foreach (Point p in area)
{
if (tileMap.getTileID(p.X, p.Y) == TileIDA)
tileMap.setTile(p.X, p.Y, TileIDB);
}
}
public void fillArea(Area area, UInt16 tileID)
{
foreach (Point p in area)
tileMap.setTile(p.X, p.Y, tileID);
}
public Area generateArea(int2 pos, float minRadius, float maxRadius)
{
Area area = new Area();
Rectangle rect = new Rectangle(pos.x - (int)maxRadius, pos.y - (int)maxRadius, (int)(2 * maxRadius), (int)(2 * maxRadius));
Land land = new Land();
float noiseRadius = maxRadius - minRadius;
Graphics.Tools.Noise.Primitive.BevinsGradient noise = new Graphics.Tools.Noise.Primitive.BevinsGradient(random.Next(), NoiseQuality.Best);
for (int y = rect.Y; y < rect.Y + rect.Height; ++y)
{
for (int x = rect.X; x < rect.X + rect.Width; ++x)
{
if (x < 0 || y < 0 || x >= tileMap.Size.x || y >= tileMap.Size.y)
continue;
float dis = new Vector2(x - pos.x, y - pos.y).Length() / maxRadius;
float nvalue = Math.Abs(noise.GetValue((float)x / 64f, (float)y / 64f, 0f));
if (dis + noiseRadius / maxRadius * (nvalue) < 1f)
{
area[x, y] = true;
}
}
}
return area;
}
public Area createPath(Point p1, Point p2, int radius, float curliness)
{
List<Point> points = new List<Point>();
points.Add(p1);
points.Add(p2);
{
int i = 0;
while (i + 1 < points.Count)//for (int i = 0; i < points.Count-1; ++i)
{
for (int j = 0; j < 100; ++j )
{
Point a = points[i];
Point b = points[i + 1];
float distance = (a - b).ToVector2().Length();
if (distance <= 8f)
break;
Point c = (a + b) / new Point(2, 2);
c.X += random.Next(-(int)(0.5f * distance * curliness), (int)(0.5f * distance * curliness));
c.Y += random.Next(-(int)(0.5f * distance * curliness), (int)(0.5f * distance * curliness));
c.X = Math.Min(Math.Max(c.X, 0), tileMap.Size.x - 1);
c.Y = Math.Min(Math.Max(c.Y, 0), tileMap.Size.y - 1);
points.Insert(i + 1, c);
}
++i;
}
}
Area area = new Area();
for (int i = 0; i < points.Count - 1; ++i)
{
Point a = points[i];
Point b = points[i + 1];
createLine(a, b, radius, ref area);
}
return area;
}
