private void wavefront(Point start, Point goal, int val)
{
if (start.x < 0 || start.x > 7 || start.y < 0 || start.y > 3)
{
return;
}
int cell = getCell(start);
if (cell < 0 || (cell > 0 && cell < val))
{
return;
}
setCell(start, val);
//Console.Out.WriteLine("x: " + start.x + " y: " + start.y + " val: " + getCell(start));
if (start.Equals1(goal))
{
return;
}
wavefront(new Point(start.x - 1, start.y), goal, val + 1);
wavefront(new Point(start.x + 1, start.y), goal, val + 1);
wavefront(new Point(start.x, start.y - 1), goal, val + 1);
wavefront(new Point(start.x, start.y + 1), goal, val + 1);
wavefront(new Point(start.x - 1, start.y-1), goal, val + 1);
wavefront(new Point(start.x + 1, start.y-1), goal, val + 1);
wavefront(new Point(start.x-1, start.y - 1), goal, val + 1);
wavefront(new Point(start.x+1, start.y + 1), goal, val + 1);
}
private Stack<Point> getPath(Point start, Point goal)
{
Stack<Point> path = new Stack<Point>();
wavefront(start, goal, 1);
Point current = new Point(goal.x, goal.y);
while (!current.Equals1(start))
{
path.Push(current);
int val = getCell(current);
Point left = new Point(current.x - 1, current.y);
Point right = new Point(current.x + 1, current.y);
Point up = new Point(current.x, current.y + 1);
Point down = new Point(current.x, current.y - 1);
Point leftup = new Point(current.x-1, current.y + 1);
Point rightup = new Point(current.x+1, current.y + 1);
Point leftdown = new Point(current.x-1, current.y - 1);
Point rightdown = new Point(current.x+1, current.y - 1);
int leftVal = getCell(left);
int rightVal = getCell(right);
int upVal = getCell(up);
int downVal = getCell(down);
int leftUpVal = getCell(leftup);
int rightUpVal = getCell(rightup);
int leftDownVal = getCell(leftdown);
int rightDownVal = getCell(rightdown);
int[] adjVals = new int[] { leftVal, leftDownVal, downVal, leftUpVal, rightUpVal, rightVal, rightDownVal, upVal };
Point[] adjPoints = new Point[] { left, leftdown, down, leftup, rightup, right, rightdown, up };
for (int i = 0; i < 8; i++)
{
if (adjVals[i] >= 0 && adjVals[i] < val)
{
current = adjPoints[i];
break;
}
}
}
return path;
}
