public XRectangle ExpandToInclude(XPoint2 pnt)
{
int l = Left;
int r = Right;
int t = Top;
int b = Bottom;
if (pnt.X < l)
{
l = pnt.X;
}
if (pnt.X > r)
{
r = pnt.X;
}
if (pnt.Y < t)
{
t = pnt.Y;
}
if (pnt.Y > b)
{
b = pnt.Y;
}
X = l; Y = t;
Width = r - l + 1; Height = b - t + 1;
return(new XRectangle(l, t, r - l + 1, b - t + 1));
}
public void AddArea(XPoint2 pos, int size, float coherence)
{
EnsureMaps(1);
var map = Maps[0];
int fringe = (int)Math.Round(
(size * (1 - coherence))
);
XRectangle range = new XRectangle(pos.X, pos.Y, 0, 0).
Inflate(size + fringe).
RestrictToWithin(
new XRectangle(0, 0, sizeX, sizeY)
);
range = new XRectangle(0, 0, sizeX, sizeY);
List<TerrainType> types = new List<TerrainType>();
float noiseRnd = pos.X + pos.Y * 10;
for (int x = range.Left; x < range.Right; ++x) {
for (int y = range.Top; y < range.Bottom; ++y) {
int dist2 = (x - pos.X) * (x - pos.X) + (y - pos.Y) * (y - pos.Y);
float noise =
SimplexNoise.simplex_noise_2octaves(
(float)x / (size + 2), noiseRnd, (float)y / (size + 2)
) / 2 - 0.5f;
map[x, y] = (1 - (float)Math.Sqrt(dist2) / size) +
(noise - 0.5f) * (1 - coherence) * 2;
}
}
}
public XRectangle ExpandToInclude(XPoint2 pnt)
{
int l = Left;
int r = Right;
int t = Top;
int b = Bottom;
if (pnt.X < l) l = pnt.X; if (pnt.X > r) r = pnt.X;
if (pnt.Y < t) t = pnt.Y; if (pnt.Y > b) b = pnt.Y;
X = l; Y = t;
Width = r - l + 1; Height = b - t + 1;
return new XRectangle(l, t, r - l + 1, b - t + 1);
}
public bool Contains(XPoint2 pnt)
{
return(pnt.X >= Left && pnt.Y >= Top && pnt.X < Right && pnt.Y < Bottom);
}
public bool Contains(XPoint2 pnt)
{
return pnt.X >= Left && pnt.Y >= Top && pnt.X < Right && pnt.Y < Bottom;
}
public static int Dot(XPoint2 p1, XPoint2 p2)
{
return p1.X * p2.X + p1.Y * p2.Y;
}
public static int Cross(XPoint2 p1, XPoint2 v2)
{
return p1.X * v2.Y - p1.Y * v2.X;
}
public static int Cross(XPoint2 p1, XPoint2 v2)
{
return(p1.X * v2.Y - p1.Y * v2.X);
}
public static int Dot(XPoint2 p1, XPoint2 p2)
{
return(p1.X * p2.X + p1.Y * p2.Y);
}
public void AddArea(XPoint2 pos, int size, XReal coherence, Func<XPoint2, bool> validityCheck)
{
int origSize = size;
List<XPoint2> stack = new List<XPoint2>();
stack.Add(pos);
int at = 0;
for (int x = 0; x < Map.GetLength(0); ++x) {
for (int y = 0; y < Map.GetLength(1); ++y) {
Map[x, y].Weight = int.MaxValue;
Map[x, y].Extra = 0;
}
}
Debug.Assert(pos.X >= 0 && pos.Y >= 0 &&
pos.X < Map.GetLength(0) && pos.Y < Map.GetLength(1),
"Out of bounds");
Map[pos.X, pos.Y] = new Node() { Weight = 70 };
activeArea = new XRectangle(pos.X, pos.Y, 1, 1);
while (size > 0 && stack.Count > 0) {
float minV = float.MaxValue;
for (int i = 0; i < stack.Count; ++i) {
var p = stack[i];
var node = Map[p.X, p.Y];
float weight = Math.Abs(node.Weight) + node.Extra;
if (weight < minV) { minV = weight; at = i; }
}
var pnt = stack[at];
--size;
stack.RemoveAt(at--);
int val = Map[pnt.X, pnt.Y].Weight;
activeArea = activeArea.ExpandToInclude(pnt);
const float NoiseScale = 30;
for (int p = 0; p < propogOffs.Length; ++p) {
XPoint2 pnt2 = pnt + propogOffs[p];
if (pnt2.X >= 0 && pnt2.Y >= 0 && pnt2.X < Map.GetLength(0) && pnt2.Y < Map.GetLength(1)) {
if (!validityCheck(pnt2)) continue;
if (Map[pnt2.X, pnt2.Y].Weight <= val + propogCost[p]) continue;
int extraW = 0;
for (int p2 = 0; p2 < propogOffs.Length; ++p2) {
XPoint2 delta = propogOffs[p2];
float noise = (SimplexNoise.simplex_noise_3octaves(pnt2.X / NoiseScale,
(delta.X + delta.Y * 2) * 5,
pnt2.Y / NoiseScale) / 2 - 0.5f);
extraW = Math.Max(
extraW,
(int)(20 * 70 * (noise - 0.0f) * (1 - coherence) / 0.5f)
);//origSize / 46
}
if (!stack.Contains(pnt2)) {
if (Map[pnt2.X, pnt2.Y].IsPositive) size++;
stack.Add(pnt2);
}
Map[pnt2.X, pnt2.Y].Weight = val + propogCost[p] * Math.Sign(val);
if (extraW > Map[pnt2.X, pnt2.Y].Extra) Map[pnt2.X, pnt2.Y].Extra = extraW;
}
}
}
for (int s = 0; s < stack.Count; ++s) {
var pnt = stack[s];
Map[pnt.X, pnt.Y].Weight = int.MinValue;
}
}
public void SetTileArea(XPoint2 pnt, RMArea area)
{
Map[pnt.X, pnt.Y] = area;
}
public int GetDistanceSquaredToArea(XPoint2 pnt, RMArea area, int minDist)
{
Debug.Assert(area.Built,
"GetDistanceSquaredToArea() does not work for unbuilt areas");
int sizeX = Map.GetLength(0), sizeY = Map.GetLength(1);
XRectangle range = area.ActiveArea;
range.RestrictToWithin(new XRectangle(pnt.X, pnt.Y, 1, 1));
range.Inflate(minDist);
range.RestrictToWithin(new XRectangle(0, 0, sizeX, sizeY));
int minDist2 = int.MaxValue;
for (int x = range.Left; x < range.Right; ++x) {
for (int y = range.Top; y < range.Bottom; ++y) {
int dx = x - pnt.X, dy = y - pnt.Y;
int dist2 = dx * dx + dy * dy;
if (dist2 > minDist * minDist) continue;
var tile = Map[x, y];
if (tile != null)
while (tile != area && tile.Parent != null) tile = tile.Parent;
if (tile == area) {
if (dist2 < minDist2) minDist2 = dist2;
}
}
}
return minDist2;
}
