private Body BuildHexagon(BodyRenderer renderer, Color[] colors, Hexagon hex, float radius, float spacing)
{
var pos = hex.GetPosition(spacing);
pos += new Vector2(radius) * Rand.Sign();
var color = colors.RandomItem();
return BuildHexagon(renderer, color, pos, radius, spacing);
}
private IEnumerable<Body> SpiralRingDistribution(BodyRenderer renderer, Color[] colors, Vector2 origin, float size, float spacing, int spiralRadius, float chance)
{
var hexagons = new List<Body>();
var center = new Hexagon(0, 0);
var color = colors.RandomItem();
var pos = origin + center.GetPosition(spacing);
//hexagons.Add(BuildHexagon(render, color, pos, size, spacing));
var ring = center.GetSpiralRing(spiralRadius);
foreach (var hexagon in ring)
{
pos = origin + hexagon.GetPosition(spacing);
var rand = Rand.Float();
if (rand < chance)
{
if (rand > chance / 2)
continue;
var newSize = size / 3;
var newSpacing = spacing / 3;
if (newSpacing > .5f)
{
hexagons.AddRange(SpiralRingDistribution(renderer, colors, pos, newSize, newSpacing, 1, chance));
}
continue;
}
color = colors.RandomItem();
hexagons.Add(BuildHexagon(renderer, color, pos, size, spacing));
}
return hexagons;
}
private Node TreeDistribution(Rectangle area, Color[] colors, BodyRenderer renderer)
{
var hexagons = new Node();
var radius = 2;
var spacing = 4;
var mapWidth = area.Width / spacing - 3;
var mapHeight = area.Height / spacing - 1;
var map = new HexagonMap<bool>(mapWidth, mapHeight);
var first = new Hexagon(Rand.Floor(mapWidth), Rand.Floor(mapHeight));
map[first] = true;
hexagons.Add(BuildHexagon(renderer, colors, first, radius, spacing));
var current = first;
var n = 5 + Rand.Floor(10);
for (int i = 0; i < n; i++)
{
var freeNeighbors = current.GetNeighborsWhere(hexagon => map.IsInBound(hexagon) && !map[hexagon]).ToArray();
if (!freeNeighbors.Any())
break;
current = freeNeighbors.RandomItem();
map[current] = true;
hexagons.Add(BuildHexagon(renderer, colors, current, radius, spacing));
}
return hexagons;
}
public static Hexagon GetNeighbor(Hexagon node, int direction)
{
var d = Directions[direction];
return new Hexagon(node.Q + d.Q, node.R + d.R);
}