static void DrawGrid(SquareGrid grid, AStarSearch astar)
{
// Print out the cameFrom array
for (var y = 0; y < 10; y++)
{
for (var x = 0; x < 10; x++)
{
Location id = new Location(x, y);
Location ptr = id;
if (!astar.cameFrom.TryGetValue(id, out ptr))
{
ptr = id;
}
if (grid.walls.Contains(id))
{
Console.Write("##");
}
else if (ptr.x == x + 1)
{
Console.Write("\u2192 ");
}
else if (ptr.x == x - 1)
{
Console.Write("\u2190 ");
}
else if (ptr.y == y + 1)
{
Console.Write("\u2193 ");
}
else if (ptr.y == y - 1)
{
Console.Write("\u2191 ");
}
else
{
Console.Write("* ");
}
}
Console.WriteLine();
}
}
static void Main()
{
// Make "diagram 4" from main article
var grid = new SquareGrid(10, 10);
for (var x = 1; x < 4; x++)
{
for (var y = 7; y < 9; y++)
{
grid.walls.Add(new Location(x, y));
}
}
grid.forests = new HashSet <Location>
{
new Location(3, 4), new Location(3, 5),
new Location(4, 1), new Location(4, 2),
new Location(4, 3), new Location(4, 4),
new Location(4, 5), new Location(4, 6),
new Location(4, 7), new Location(4, 8),
new Location(5, 1), new Location(5, 2),
new Location(5, 3), new Location(5, 4),
new Location(5, 5), new Location(5, 6),
new Location(5, 7), new Location(5, 8),
new Location(6, 2), new Location(6, 3),
new Location(6, 4), new Location(6, 5),
new Location(6, 6), new Location(6, 7),
new Location(7, 3), new Location(7, 4),
new Location(7, 5)
};
// Run A*
var astar = new AStarSearch(grid, new Location(1, 4),
new Location(8, 5));
DrawGrid(grid, astar);
}