protected override void DrawWalls(WeaveRectGrid grid)
{
for (int i = 0; i != grid.height; ++i)
{
int north = tex.height - (i * cellSize);
int south = north - cellSize;
for (int j = 0; j < grid.width; ++j)
{
int west = j * cellSize;
int east = west + cellSize;
int x1 = west;
int x2 = x1 + inset;
int x4 = east;
int x3 = x4 - inset;
int y1 = north;
int y2 = y1 - inset;
int y4 = south;
int y3 = y4 + inset;
int vertex = grid.PositionToVertex(i, j);
List <KeyValuePair <int, Line[]> > links = new List <KeyValuePair <int, Line[]> >(4);
links.Add(
new KeyValuePair <int, Line[]>(
grid.NorthOf(vertex),
new Line[3] {
new Line(x2, y1, x2, y2), new Line(x3, y1, x3, y2), new Line(x2, y2, x3, y2)
}
)
);
links.Add(
new KeyValuePair <int, Line[]>(
grid.SouthOf(vertex),
new Line[3] {
new Line(x2, y3, x2, y4), new Line(x3, y3, x3, y4), new Line(x2, y3, x3, y3)
}
)
);
links.Add(
new KeyValuePair <int, Line[]>(
grid.WestOf(vertex),
new Line[3] {
new Line(x1, y3, x2, y3), new Line(x1, y2, x2, y2), new Line(x2, y2, x2, y3)
}
)
);
links.Add(
new KeyValuePair <int, Line[]>(
grid.EastOf(vertex),
new Line[3] {
new Line(x3, y3, x4, y3), new Line(x3, y2, x4, y2), new Line(x3, y2, x3, y3)
}
)
);
foreach (var dir_lines in links)
{
int neighbor = dir_lines.Key;
int linkedVertex = -1;
Line[] lines = dir_lines.Value;
if (grid.Graph.AreLinked(vertex, neighbor))
{
linkedVertex = neighbor;
}
else if (neighbor != -1)
{
List <int> vLinks = grid.Graph.LinksOf(vertex);
System.Predicate <int> isTunnelLink = linkd =>
linkd != neighbor &&
grid.IsTunnel(linkd) &&
grid.Graph[neighbor] == grid.Graph[linkd];
int tunnelIndex = vLinks.FindIndex(isTunnelLink);
if (tunnelIndex != -1)
{
linkedVertex = vLinks[tunnelIndex];
}
}
if (linkedVertex != -1)
{
tex.Line(lines[0].a, lines[0].b, wallColor);
tex.Line(lines[1].a, lines[1].b, wallColor);
}
else
{
tex.Line(lines[2].a, lines[2].b, wallColor);
}
}
}
}
PositionGraph graph = grid.Graph;
for (int tunnelVertex = grid.width * grid.height; tunnelVertex != grid.Graph.Size; ++tunnelVertex)
{
Position position = grid.Graph[tunnelVertex];
int north = tex.height - (position.row * cellSize);
int south = north - cellSize;
int west = position.col * cellSize;
int east = west + cellSize;
int x1 = west;
int x2 = x1 + inset;
int x4 = east;
int x3 = x4 - inset;
int y1 = north;
int y2 = y1 - inset;
int y4 = south;
int y3 = y4 + inset;
bool isVerticalPassage = graph.AreLinked(tunnelVertex, grid.NorthOf(tunnelVertex)) ||
graph.AreLinked(tunnelVertex, grid.SouthOf(tunnelVertex));
if (isVerticalPassage)
{
// north
tex.Line(new Vector2Int(x2, y3), new Vector2Int(x2, y4), wallColor);
tex.Line(new Vector2Int(x3, y3), new Vector2Int(x3, y4), wallColor);
// south
tex.Line(new Vector2Int(x2, y1), new Vector2Int(x2, y2), wallColor);
tex.Line(new Vector2Int(x3, y1), new Vector2Int(x3, y2), wallColor);
}
else // horizontal passage
{
// w
tex.Line(new Vector2Int(x1, y3), new Vector2Int(x2, y3), wallColor);
tex.Line(new Vector2Int(x1, y2), new Vector2Int(x2, y2), wallColor);
// e
tex.Line(new Vector2Int(x3, y3), new Vector2Int(x4, y3), wallColor);
tex.Line(new Vector2Int(x3, y2), new Vector2Int(x4, y2), wallColor);
}
}
}
