public static Delaunay2D <T> Triangulate(List <Vertex <T> > vertices)
{
var delaunay = new Delaunay2D <T>
{
Vertices = new List <Vertex <T> >(vertices)
};
delaunay.Triangulate();
return(delaunay);
}
public static SimpleGameMap GenerateMirroredMap(EMapSize size, int numTeams = -1)
{
var rnd = StrategyGame.Random;
var iSize = (int)size;
// Lock Large/Small maps to 2/4 teams for less variation
if (size == EMapSize.Small)
{
numTeams = 2;
}
if (size == EMapSize.Large)
{
numTeams = 4;
}
if (numTeams == -1 && size == EMapSize.Normal)
{
numTeams = rnd.Next(1, 3) * 2;
}
var map = new SimpleGameMap($"{size} Random{numTeams}");
// 0:hor/1:vert/2:hor&vert
var mirrorType = numTeams == 2 ? rnd.Next(3) : 2;
var mirrorIncrement = mirrorType == 2 ? 4 : 2;
// Determine num sectors based on size & num teams
// small: (min = num teams*2, max = num teams*4)
// normal: (min = num teams*3, max = num teams*5)
// large: (min = num teams*4, max = num teams*6)
var minNumSectors = numTeams * (iSize + 2);
var maxNumSectors = numTeams * (iSize + 4);
var xDim = 7;
var yDim = 7;
var nextSectorId = 0;
// Add sectors in all positions
for (var x = 0; x < xDim; x++)
{
for (var y = 0; y < yDim; y++)
{
var s = new SimpleMapSector(nextSectorId++, new Point(x, y));
map.Sectors.Add(s);
}
}
var maxChances = map.Sectors.Count * 3;
var l = 0;
// Loop with a decreasing chance to remove sectors (mirrored)
var removeChance = 0.97;
while ((l++ < maxChances || map.Sectors.Count - mirrorIncrement > maxNumSectors) && map.Sectors.Count - mirrorIncrement > minNumSectors)
{
var s = StrategyGame.RandomItem(map.Sectors);
if (rnd.NextDouble() < removeChance)
{
removeChance -= 0.03;
map.Sectors.Remove(s);
// Horiz mirrored or both
if (mirrorType == 0 || mirrorType == 2)
{
var mX = MirrorDimension(xDim, s.MapPosition.X);
var mY = s.MapPosition.Y;
var s2 = map.Sectors.FirstOrDefault(_ => _.MapPosition.X == mX && _.MapPosition.Y == mY);
if (s2 != null)
{
map.Sectors.Remove(s2);
}
}
// Vert mirrored or both
if (mirrorType == 1 || mirrorType == 2)
{
var mX = s.MapPosition.X;
var mY = MirrorDimension(yDim, s.MapPosition.Y);
var s2 = map.Sectors.FirstOrDefault(_ => _.MapPosition.X == mX && _.MapPosition.Y == mY);
if (s2 != null)
{
map.Sectors.Remove(s2);
}
}
// Mirrored for both dimensions
if (mirrorType == 2)
{
var mX = MirrorDimension(xDim, s.MapPosition.X);
var mY = MirrorDimension(yDim, s.MapPosition.Y);
var s2 = map.Sectors.FirstOrDefault(_ => _.MapPosition.X == mX && _.MapPosition.Y == mY);
if (s2 != null)
{
map.Sectors.Remove(s2);
}
}
}
}
// Fix SectorIDs after removing, they actually need to be indexes...
l = 0;
foreach (var s in map.Sectors)
{
s.Id = l++;
}
// Triangulate, loop with a small chance to remove an edges if that sector has > 2 connections
var vertices = new List <Vertex <SimpleMapSector> >();
foreach (var s in map.Sectors)
{
var p = s.MapPosition;
vertices.Add(new Vertex <SimpleMapSector>(new Vector2(p.X, p.Y), s));
}
var delaunay = Delaunay2D <SimpleMapSector> .Triangulate(vertices);
var mapEdges = new List <Edge <SimpleMapSector> >();
foreach (var edge in delaunay.Edges)
{
if (!map.WormholeExists(edge.U.Item.Id, edge.V.Item.Id))
{
map.WormholeIds.Add(new WormholeId(edge.U.Item.Id, edge.V.Item.Id));
}
}
// Find Starting Positions (mirrored)
var teamsAdded = 0;
{
var startPosMinX = 0;
var startPosMinY = 0;
var startPosMaxX = mirrorType == 1 ? xDim : xDim / 2 - 1;
var startPosMaxY = mirrorType == 0 ? yDim : yDim / 2 - 1;
var startSectors = map.Sectors
.Where(_ => _.MapPosition.X >= startPosMinX && _.MapPosition.X <= startPosMaxX &&
_.MapPosition.Y >= startPosMinY && _.MapPosition.Y <= startPosMaxY)
.ToList();
var s = StrategyGame.RandomItem(startSectors);
// Safety check
if (s == null)
{
return(GenerateMirroredMap(size));
}
s.StartingSectorTeam = ++teamsAdded;
// Mirrored for both dimensions
if (mirrorType == 2)
{
var mX = MirrorDimension(xDim, s.MapPosition.X);
var mY = MirrorDimension(yDim, s.MapPosition.Y);
var s2 = map.Sectors.FirstOrDefault(_ => _.MapPosition.X == mX && _.MapPosition.Y == mY);
if (s2 != null)
{
s2.StartingSectorTeam = ++teamsAdded;
}
}
// Horiz mirrored or both
if (mirrorType == 0 || (mirrorType == 2 && numTeams > 2))
{
var mX = MirrorDimension(xDim, s.MapPosition.X);
var mY = s.MapPosition.Y;
var s2 = map.Sectors.FirstOrDefault(_ => _.MapPosition.X == mX && _.MapPosition.Y == mY);
if (s2 != null)
{
s2.StartingSectorTeam = ++teamsAdded;
}
}
// Vert mirrored or both
if (mirrorType == 1 || (mirrorType == 2 && numTeams > 2))
{
var mX = s.MapPosition.X;
var mY = MirrorDimension(yDim, s.MapPosition.Y);
var s2 = map.Sectors.FirstOrDefault(_ => _.MapPosition.X == mX && _.MapPosition.Y == mY);
if (s2 != null)
{
s2.StartingSectorTeam = ++teamsAdded;
}
}
}
// Final Checks
if (teamsAdded < numTeams || !map.IsValid())
{
return(GenerateMirroredMap(size));
}
return(map);
}
