/// <summary>
/// Must be called after changing one cell geometry.
/// </summary>
void UpdateProvinceGeometry(MapProvince prov, WorldMapStrategyKit.MapGenerator.Geom.Polygon poly)
{
// Copy new polygon definition
prov.region.polygon = poly;
// Update segments list
prov.region.segments.Clear();
List <Segment> segmentCache = new List <Segment>(cellNeighbourHit.Keys);
WorldMapStrategyKit.MapGenerator.Geom.Contour contour0 = poly.contours[0];
int pointCount = contour0.points.Count;
int segmentCacheCount = segmentCache.Count;
for (int k = 0; k < pointCount; k++)
{
Segment s = contour0.GetSegment(k);
bool found = false;
// Search this segment in the segment cache
for (int j = 0; j < segmentCacheCount; j++)
{
Segment o = segmentCache[j];
if ((Point.EqualsBoth(o.start, s.start) && Point.EqualsBoth(o.end, s.end)) || (Point.EqualsBoth(o.end, s.start) && Point.EqualsBoth(o.start, s.end)))
{
prov.region.segments.Add(o);
o.territoryIndex = prov.countryIndex;
found = true;
break;
}
}
if (!found)
{
prov.region.segments.Add(s);
}
}
// Refresh neighbours
ProvincesUpdateNeighbours();
// Refresh rect2D
ProvincesUpdateBounds(prov);
// Refresh territories
FindCountryFrontiers();
UpdateCountryBoundaries();
}
void ProvincesUpdateBounds(MapProvince cell)
{
if (cell.region.polygon.contours.Count == 0)
{
return;
}
Vector2[] points = cell.region.polygon.contours[0].GetVector2Points();
cell.region.points = points;
// Update bounding rect
float minx, miny, maxx, maxy;
minx = miny = float.MaxValue;
maxx = maxy = float.MinValue;
int pointCount = points.Length;
for (int p = 0; p < pointCount; p++)
{
Vector2 point = points[p];
if (point.x < minx)
{
minx = point.x;
}
if (point.x > maxx)
{
maxx = point.x;
}
if (point.y < miny)
{
miny = point.y;
}
if (point.y > maxy)
{
maxy = point.y;
}
}
float rectWidth = maxx - minx;
float rectHeight = maxy - miny;
cell.region.rect2D = new Rect(minx, miny, rectWidth, rectHeight);
cell.region.rect2DArea = rectWidth * rectHeight;
}
void ProvincesFindNeighbours()
{
if (cellNeighbourHit == null)
{
cellNeighbourHit = new Dictionary <Segment, MapRegion>(50000);
}
else
{
cellNeighbourHit.Clear();
}
int cellsCount = mapProvinces.Count;
for (int k = 0; k < cellsCount; k++)
{
MapProvince cell = mapProvinces[k];
MapRegion region = cell.region;
int numSegments = region.segments.Count;
for (int i = 0; i < numSegments; i++)
{
Segment seg = region.segments[i];
if (cellNeighbourHit.ContainsKey(seg))
{
MapRegion neighbour = cellNeighbourHit[seg];
if (neighbour != region)
{
if (!region.neighbours.Contains(neighbour))
{
region.neighbours.Add(neighbour);
neighbour.neighbours.Add(region);
}
}
}
else
{
cellNeighbourHit[seg] = region;
}
}
}
}
void CreateMapCities()
{
if (mapCountries == null)
{
return;
}
int countryCount = mapCountries.Count;
if (mapCities == null)
{
mapCities = new List <MapCity>();
}
else
{
mapCities.Clear();
}
int totalCityCount = 0;
for (int k = 0; k < countryCount; k++)
{
int cityCount = UnityEngine.Random.Range(numCitiesPerCountryMin, numCitiesPerCountryMax + 1);
MapCountry country = mapCountries[k];
if (!country.visible)
{
continue;
}
int provincesCount = country.provinces.Count;
country.hasCapital = false;
for (int j = 0; j < provincesCount; j++)
{
country.provinces[j].hasCapital = false;
}
Vector2 pos;
int countryCityCount = 0;
for (int q = 0; q < cityCount; q++)
{
if (countryCityCount >= cityCount)
{
break;
}
for (int j = 0; j < provincesCount; j++)
{
if (countryCityCount >= cityCount)
{
break;
}
MapProvince prov = country.provinces[j];
if (!prov.visible)
{
continue;
}
Rect rect = prov.region.rect2D;
if (rect.width > 0.00001f && rect.height > 0.00001f)
{
do
{
pos.x = rect.xMin + UnityEngine.Random.value * rect.width;
pos.y = rect.yMin + UnityEngine.Random.value * rect.height;
} while (!prov.region.Contains(pos.x, pos.y));
CITY_CLASS cityClass;
if (!country.hasCapital)
{
country.hasCapital = true;
cityClass = CITY_CLASS.COUNTRY_CAPITAL;
}
else if (!prov.hasCapital)
{
prov.hasCapital = true;
cityClass = CITY_CLASS.REGION_CAPITAL;
}
else
{
cityClass = CITY_CLASS.CITY;
}
MapCity c = new MapCity("City" + totalCityCount++, j, k, 0, pos, cityClass);
mapCities.Add(c);
countryCityCount++;
}
}
}
}
}
/// <summary>
/// Generate and replace provinces, city and country data
/// </summary>
public void GenerateMap()
{
try {
UnityEngine.Random.InitState(seed);
GenerateHeightMap();
CreateMapProvinces();
AssignHeightMapToProvinces(true);
CreateMapCountries();
CreateMapCities();
UnityEngine.Random.InitState(seedNames);
// Replace countries
int mapCountriesCount = mapCountries.Count;
List <Country> newCountries = new List <Country>(mapCountriesCount);
for (int k = 0; k < mapCountriesCount; k++)
{
MapCountry c = mapCountries[k];
Vector2[] points = c.region.points;
if (points == null || points.Length < 3)
{
continue;
}
string name = GetUniqueRandomName(0, 4, usedNames);
Country newCountry = new Country(name, "World", k);
Region region = new Region(newCountry, newCountry.regions.Count);
newCountry.regions.Add(region);
region.UpdatePointsAndRect(points);
map.RefreshCountryGeometry(newCountry);
newCountries.Add(newCountry);
}
map.countries = newCountries.ToArray();
countryChanges = true;
// Replace provinces
usedNames.Clear();
int mapProvincesCount = mapProvinces.Count;
List <Province> newProvinces = new List <Province>(mapProvincesCount);
Province[] provinces = _map.provinces;
if (provinces == null)
{
provinces = new Province[0];
}
for (int k = 0; k < mapProvincesCount; k++)
{
MapProvince c = mapProvinces[k];
if (!c.visible)
{
continue;
}
Vector2[] points = c.region.points;
if (points == null || points.Length < 3)
{
continue;
}
int countryIndex = map.GetCountryIndex(c.center);
if (countryIndex < 0)
{
continue;
}
string name = GetUniqueRandomName(0, 4, usedNames);
Province newProvince = new Province(name, countryIndex, k);
newProvince.regions = new List <Region>();
Region region = new Region(newProvince, newProvince.regions.Count);
newProvince.attrib["mapColor"] = c.color;
newProvince.regions.Add(region);
region.UpdatePointsAndRect(points);
map.RefreshProvinceGeometry(newProvince);
newProvinces.Add(newProvince);
Country country = map.countries[countryIndex];
List <Province> countryProvinces = country.provinces != null ? new List <Province>(country.provinces) : new List <Province>();
countryProvinces.Add(newProvince);
country.provinces = countryProvinces.ToArray();
}
map.provinces = newProvinces.ToArray();
provinceChanges = true;
// Replace cities
usedNames.Clear();
int mapCitiesCount = mapCities.Count;
List <City> newCities = new List <City>(mapCitiesCount);
string provinceName = "";
for (int k = 0; k < mapCitiesCount; k++)
{
MapCity c = mapCities[k];
City newCity;
Province prov = map.GetProvince(c.unity2DLocation);
if (prov == null)
{
continue;
}
provinceName = prov != null ? prov.name : "";
string name = GetUniqueRandomName(0, 4, usedNames);
newCity = new City(name, provinceName, prov.countryIndex, c.population, c.unity2DLocation, c.cityClass, k);
newCities.Add(newCity);
}
map.cities = newCities.ToArray();
cityChanges = true;
// Generate textures
GenerateWorldTexture();
// Apply some complementary style
if (changeStyle && heightGradientPreset != HeightMapGradientPreset.Custom)
{
map.frontiersColor = Color.black;
map.frontiersColorOuter = Color.black;
map.provincesColor = new Color(0.5f, 0.5f, 0.5f, 0.35f);
if (heightGradientPreset == HeightMapGradientPreset.BlackAndWhite || heightGradientPreset == HeightMapGradientPreset.Grayscale)
{
map.countryLabelsColor = Color.black;
map.countryLabelsShadowColor = new Color(0.9f, 0.9f, 0.9f, 0.75f);
}
else
{
map.countryLabelsColor = Color.white;
map.countryLabelsShadowColor = new Color(0.1f, 0.1f, 0.1f, 0.75f);
}
}
if (_map.earthStyle.isScenicPlus())
{
_map.earthStyle = EARTH_STYLE.Natural;
}
// Save map data
SaveGeneratedMapData();
map.showFrontiers = true;
map.showCountryNames = true;
map.waterLevel = seaLevel;
map.Redraw(true);
} catch (Exception ex) {
if (!Application.isPlaying)
{
Debug.LogError("Error generating map: " + ex.ToString());
#if UNITY_EDITOR
EditorUtility.DisplayDialog("Error Generating Map", "An error occured while generating map. Try choosing another 'Seed' value, reducing 'Border Curvature' amount or number of provinces.", "Ok");
#endif
}
}
}
void VoronoiTesselation()
{
bool usesUserDefinedSites = false;
if (voronoiSites != null && voronoiSites.Count > 0)
{
numProvinces = voronoiSites.Count;
usesUserDefinedSites = true;
}
if (centers == null || centers.Length != numProvinces)
{
centers = new Point[numProvinces];
}
for (int k = 0; k < centers.Length; k++)
{
if (usesUserDefinedSites)
{
Vector2 p = voronoiSites[k];
centers[k] = new Point(p.x, p.y);
}
else
{
centers[k] = new Point(UnityEngine.Random.Range(-0.49f, 0.49f), UnityEngine.Random.Range(-0.49f, 0.49f));
}
}
if (voronoi == null)
{
voronoi = new VoronoiFortune();
}
for (int k = 0; k < goodGridRelaxation; k++)
{
voronoi.AssignData(centers);
voronoi.DoVoronoi();
if (k < goodGridRelaxation - 1)
{
for (int j = 0; j < numProvinces; j++)
{
Point centroid = voronoi.cells[j].centroid;
centers[j] = (centers[j] + centroid) / 2;
}
}
}
// Make cell regions: we assume cells have only 1 region but that can change in the future
for (int k = 0; k < voronoi.cells.Length; k++)
{
VoronoiCell voronoiCell = voronoi.cells[k];
Vector2 center = voronoiCell.center.vector3;
MapProvince cell = new MapProvince(center);
MapRegion cr = new MapRegion(cell);
if (edgeNoise > 0)
{
cr.polygon = voronoiCell.GetPolygon(voronoiCell.center, edgeMaxLength, edgeNoise);
}
else
{
cr.polygon = voronoiCell.GetPolygon();
}
if (cr.polygon != null)
{
// Add segments
int segmentsCount = voronoiCell.segments.Count;
for (int i = 0; i < segmentsCount; i++)
{
Segment s = voronoiCell.segments[i];
if (!s.deleted)
{
if (edgeNoise > 0)
{
cr.segments.AddRange(s.subdivisions);
}
else
{
cr.segments.Add(s);
}
}
}
cell.region = cr;
mapProvinces.Add(cell);
}
}
}
void CreateMapCountries()
{
numCountries = Mathf.Clamp(numCountries, 1, Mathf.Min(numProvinces, MAX_TERRITORIES));
if (mapCountries == null)
{
mapCountries = new List <MapCountry>(numCountries);
}
else
{
mapCountries.Clear();
}
for (int k = 0; k < mapProvinces.Count; k++)
{
mapProvinces[k].countryIndex = -1;
}
int cellsCount = mapProvinces.Count;
for (int c = 0; c < numCountries; c++)
{
MapCountry territory = new MapCountry(c.ToString());
int territoryIndex = mapCountries.Count;
int p = UnityEngine.Random.Range(0, cellsCount);
int z = 0;
while ((mapProvinces[p].countryIndex != -1 || !mapProvinces[p].visible || mapProvinces[p].ignoreTerritories) && z++ <= mapProvinces.Count)
{
p++;
if (p >= mapProvinces.Count)
{
p = 0;
}
}
if (z > mapProvinces.Count)
{
break; // no more territories can be found - this should not happen
}
MapProvince prov = mapProvinces[p];
prov.countryIndex = territoryIndex;
territory.capitalCenter = prov.center;
territory.provinces.Add(prov);
mapCountries.Add(territory);
}
// Continue conquering cells
int[] territoryCellIndex = new int[mapCountries.Count];
// Iterate one cell per country (this is not efficient but ensures balanced distribution)
bool remainingCells = true;
int territoriesCount = mapCountries.Count;
while (remainingCells)
{
while (remainingCells)
{
remainingCells = false;
for (int k = 0; k < territoriesCount; k++)
{
MapCountry territory = mapCountries[k];
int territoryCellsCount = territory.provinces.Count;
for (int p = territoryCellIndex[k]; p < territoryCellsCount; p++)
{
MapRegion cellRegion = territory.provinces[p].region;
int neighboursCount = cellRegion.neighbours.Count;
for (int n = 0; n < neighboursCount; n++)
{
MapRegion otherRegion = cellRegion.neighbours[n];
MapProvince otherProv = (MapProvince)otherRegion.entity;
if (otherProv.countryIndex == -1 && otherProv.visible && !otherProv.ignoreTerritories)
{
otherProv.countryIndex = k;
territory.provinces.Add(otherProv);
remainingCells = true;
p = territory.provinces.Count;
break;
}
}
if (p < territoryCellsCount) // no free neighbours left for this cell
{
territoryCellIndex[k]++;
}
}
}
}
// Check if there's any other cell without territory
for (int k = 0; k < cellsCount; k++)
{
MapProvince cell = mapProvinces[k];
if (cell.countryIndex == -1 && cell.visible && !cell.ignoreTerritories)
{
int territoryIndex = UnityEngine.Random.Range(0, territoriesCount);
cell.countryIndex = territoryIndex;
mapCountries[territoryIndex].provinces.Add(cell);
remainingCells = true;
break;
}
}
}
FindCountryFrontiers();
UpdateCountryBoundaries();
}
void FindCountryFrontiers()
{
if (mapCountries == null || mapCountries.Count == 0)
{
return;
}
if (territoryFrontiers == null)
{
territoryFrontiers = new List <Segment>(cellNeighbourHit.Count);
}
else
{
territoryFrontiers.Clear();
}
if (territoryNeighbourHit == null)
{
territoryNeighbourHit = new Dictionary <Segment, MapRegion>(50000);
}
else
{
territoryNeighbourHit.Clear();
}
int terrCount = mapCountries.Count;
Connector[] connectors = new Connector[terrCount];
for (int k = 0; k < terrCount; k++)
{
connectors[k] = new Connector();
MapCountry territory = mapCountries[k];
territory.provinces.Clear();
if (territory.region == null)
{
MapRegion territoryRegion = new MapRegion(territory);
territory.region = territoryRegion;
}
mapCountries[k].region.neighbours.Clear();
}
int cellCount = mapProvinces.Count;
for (int k = 0; k < cellCount; k++)
{
MapProvince cell = mapProvinces[k];
if (cell.countryIndex >= terrCount)
{
continue;
}
bool validCell = cell.visible && cell.countryIndex >= 0;
if (validCell)
{
mapCountries[cell.countryIndex].provinces.Add(cell);
}
MapRegion region = cell.region;
int numSegments = region.segments.Count;
for (int i = 0; i < numSegments; i++)
{
Segment seg = region.segments[i];
if (seg.border)
{
if (validCell)
{
territoryFrontiers.Add(seg);
int territory1 = cell.countryIndex;
connectors[territory1].Add(seg);
seg.territoryIndex = territory1;
}
continue;
}
if (territoryNeighbourHit.ContainsKey(seg))
{
MapRegion neighbour = territoryNeighbourHit[seg];
MapProvince neighbourCell = (MapProvince)neighbour.entity;
int territory1 = cell.countryIndex;
int territory2 = neighbourCell.countryIndex;
if (territory2 != territory1)
{
territoryFrontiers.Add(seg);
if (validCell)
{
connectors[territory1].Add(seg);
seg.territoryIndex = (territory2 >= 0) ? -1 : territory1; // if segment belongs to a visible cell and valid territory2, mark this segment as disputed. Otherwise make it part of territory1
if (seg.territoryIndex < 0)
{
// add territory neigbhours
MapRegion territory1Region = mapCountries[territory1].region;
MapRegion territory2Region = mapCountries[territory2].region;
if (!territory1Region.neighbours.Contains(territory2Region))
{
territory1Region.neighbours.Add(territory2Region);
}
if (!territory2Region.neighbours.Contains(territory1Region))
{
territory2Region.neighbours.Add(territory1Region);
}
}
}
if (territory2 >= 0)
{
connectors[territory2].Add(seg);
}
}
}
else
{
territoryNeighbourHit.Add(seg, region);
seg.territoryIndex = cell.countryIndex;
}
}
}
for (int k = 0; k < terrCount; k++)
{
mapCountries[k].region = new MapRegion(mapCountries[k]);
if (mapCountries[k].provinces.Count > 0)
{
mapCountries[k].region.polygon = connectors[k].ToPolygonFromLargestLineStrip();
}
else
{
mapCountries[k].region.polygon = null;
}
}
}
void AssignHeightMapToProvinces(bool colorGroundCells)
{
if (heightMapTexture == null)
{
return;
}
if (currentHeightmapWidth == 0)
{
return;
}
if (heightGradient == null)
{
heightGradientPreset = HeightMapGradientPreset.Colored;
}
GradientColorKey[] colorKeys;
switch (heightGradientPreset)
{
case HeightMapGradientPreset.Colored:
heightGradient = new Gradient();
colorKeys = new GradientColorKey[4];
colorKeys [0] = new GradientColorKey(Color.gray, 0f);
colorKeys [1] = new GradientColorKey(new Color(0.133f, 0.545f, 0.133f), seaLevel);
colorKeys [2] = new GradientColorKey(new Color(0.898f, 0.898f, 0.298f), (seaLevel + 1f) * 0.5f);
colorKeys [3] = new GradientColorKey(Color.white, 1f);
heightGradient.colorKeys = colorKeys;
break;
case HeightMapGradientPreset.ColoredLight:
heightGradient = new Gradient();
colorKeys = new GradientColorKey[4];
colorKeys [0] = new GradientColorKey(Color.gray, 0f);
colorKeys [1] = new GradientColorKey(new Color(0.333f, 0.745f, 0.333f), seaLevel);
colorKeys [2] = new GradientColorKey(new Color(0.998f, 0.998f, 0.498f), (seaLevel + 1f) * 0.5f);
colorKeys [3] = new GradientColorKey(Color.white, 1f);
heightGradient.colorKeys = colorKeys;
break;
case HeightMapGradientPreset.Grayscale:
heightGradient = new Gradient();
colorKeys = new GradientColorKey[3];
colorKeys [0] = new GradientColorKey(Color.black, 0f);
colorKeys [1] = new GradientColorKey(Color.gray, seaLevel);
colorKeys [2] = new GradientColorKey(Color.white, 1f);
heightGradient.colorKeys = colorKeys;
break;
case HeightMapGradientPreset.BlackAndWhite:
heightGradient = new Gradient();
colorKeys = new GradientColorKey[3];
colorKeys [0] = new GradientColorKey(Color.black, 0f);
colorKeys [1] = new GradientColorKey(Color.white, seaLevel);
colorKeys [2] = new GradientColorKey(Color.white, 1f);
heightGradient.colorKeys = colorKeys;
break;
}
int provCount = mapProvinces.Count;
for (int k = 0; k < provCount; k++)
{
MapProvince prov = mapProvinces [k];
int x = (int)Mathf.Clamp((prov.center.x + 0.5f) * currentHeightmapWidth, 0, currentHeightmapWidth - 1);
int y = (int)Mathf.Clamp((prov.center.y + 0.5f) * currentHeightmapHeight, 0, currentHeightmapHeight - 1);
int j = y * currentHeightmapWidth + x;
float h = heights [j];
if (h < seaLevel)
{
prov.visible = false;
}
else
{
prov.visible = true;
prov.color = colorGroundCells ? heightGradient.Evaluate(h) : Color.white;
}
}
}