public ITiling <GameObject> BuildTiling(Portal[] prevPortals)
{
Tile[] layout = new Tile[width * height];
List <Tuple <Direction, int> > edgeConstraints = new List <Tuple <Direction, int> >();
#region maze generation
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
edgeConstraints.Clear();
if (i == 0)
{
Tuple <Direction, int> tp = new Tuple <Direction, int>(Direction.S, 0);
edgeConstraints.Add(tp);
}
if (j == 0)
{
Tuple <Direction, int> tp = new Tuple <Direction, int>(Direction.W, 0);
edgeConstraints.Add(tp);
}
if (i == height - 1)
{
Tuple <Direction, int> tp = new Tuple <Direction, int>(Direction.N, 0);
edgeConstraints.Add(tp);
}
if (j == width - 1)
{
Tuple <Direction, int> tp = new Tuple <Direction, int>(Direction.E, 0);
edgeConstraints.Add(tp);
}
if (i != 0)
{
Tile bottom = (Tile)layout[(i - 1) * width + j];
Tuple <Direction, int> tp = new Tuple <Direction, int>(Direction.S, bottom.GetEdgeColor(Direction.N));
edgeConstraints.Add(tp);
}
if (j != 0)
{
Tile left = (Tile)layout[i * width + j - 1];
Tuple <Direction, int> tp = new Tuple <Direction, int>(Direction.W, left.GetEdgeColor(Direction.E));
edgeConstraints.Add(tp);
}
TileSet truchetTileSet = (TileSet)tileSet;
IEnumerable <PriorityTile> matched = truchetTileSet.MatchingTiles(edgeConstraints) as IEnumerable <PriorityTile>;
int sum = matched.Sum(x => x.priority);
int idx = UnityEngine.Random.Range(0, sum);
Tile selectedTile = null;
foreach (PriorityTile priorityTile in matched)
{
idx -= priorityTile.priority;
if (idx <= 0)
{
selectedTile = priorityTile.tile;
break;
}
}
if (selectedTile != null)
{
layout[i * width + j] = selectedTile;
}
else
{
throw new Exception("No suitable tile found");
}
}
}
#endregion
#region Up Portals
int[] upIndex = new int[3];
int entry = -1;
if (prevPortals != null && prevPortals[0] != null)
{
int portalCount = prevPortals.Count(p => p != null);
for (int i = 0; i < portalCount; i++)
{
int portalY = UnityEngine.Random.Range(0, height);
int portalX = UnityEngine.Random.Range(0, width);
while (upIndex.Contains(portalY * width + portalX + 1) || !layout[portalY * width + portalX].hasEdgeColor(1))
{
portalY = UnityEngine.Random.Range(0, height);
portalX = UnityEngine.Random.Range(0, width);
}
upIndex[i] = portalY * width + portalX + 1;
}
}
else
{
int portalY = UnityEngine.Random.Range(0, height);
int portalX = UnityEngine.Random.Range(0, width);
while (!layout[portalY * width + portalX].hasEdgeColor(1))
{
portalY = UnityEngine.Random.Range(0, height);
portalX = UnityEngine.Random.Range(0, width);
}
entry = portalY * width + portalX + 1;
}
List <PriorityTile> tiling = new List <PriorityTile>();
for (int i = 0; i < width * height; i++)
{
if (upIndex.Contains(i + 1))
{
tiling.Add(new PriorityTile(layout[i], PortalType.Up));
}
else if (entry != -1 && entry - 1 == i)
{
tiling.Add(new PriorityTile(layout[i], PortalType.Enter));
}
else
{
tiling.Add(new PriorityTile(layout[i], PortalType.None));
}
}
#endregion
#region Eliminate disconnects
List <int> connectedTiles = new List <int>();
for (int i = 0; i < layout.Count(); i++)
{
if (!connectedTiles.Contains(i))
{
exploredTiles = new List <int>();
DetermineIfConnected(tiling, i, null, ref connectedTiles);
}
}
#endregion
#region Down portals
int[] downIndex = new int[3];
int newPortalCount;
if (tiling.Count(t => t.tile != FullTile) < 3)
{
newPortalCount = 1;
}
else
{
newPortalCount = UnityEngine.Random.Range(1, 3);
}
for (int i = 0; i < newPortalCount; i++)
{
List <int> indexes = tiling.Where(t => t.tile != FullTile).Select(x => tiling.IndexOf(x)).ToList();
int index = indexes[UnityEngine.Random.Range(0, indexes.Count)];
while (upIndex.Contains(index + 1) || downIndex.Contains(index + 1) || tiling[index].portalType == PortalType.Enter || !tiling[index].tile.hasEdgeColor(1))
{
index = indexes[UnityEngine.Random.Range(0, indexes.Count)];
}
downIndex[i] = index + 1;
}
for (int i = 0; i < 3; i++)
{
if (downIndex[i] != 0)
{
tiling[downIndex[i] - 1].portalType = PortalType.Down;
}
}
#endregion
Tiling truchetFinalTiling = new Tiling(tiling);
return(truchetFinalTiling);
}
public ITileSet <GameObject> Build()
{
TileSet tileSet = new TileSet(tiles);
return(tileSet);
}
public TilingBuilder(int width, int height, TileSet tileSet)
{
this.width = width;
this.height = height;
this.tileSet = tileSet;
}