public bool SaveMaze(string name, ImageFormat format)
{
if (MazeDestination != null || String.IsNullOrEmpty(name))
{
try {
MazeDestination.Save(name, format);
return(true);
} catch (Exception e) {
Console.WriteLine("Maze cannot be saved: " + e.StackTrace);
}
}
return(false);
}
public bool Solve(int x, int y)
{
if (!IsValid(x, y))
{
return(false);
}
while (IsValid(x, y) && mSource.GetPixel(x, y).ToArgb() != Color.Blue.ToArgb())
{
if (MoveAlongWall(ref x, ref y) && IsValid(x, y))
{
MazeDestination.SetPixel(x, y, Color.Green);
}
else if (MoveToNearestWall(ref x, ref y) && IsValid(x, y))
{
MazeDestination.SetPixel(x, y, Color.Green);
}
else
{
break;
}
}
return(true);
}
private void CheckMovingThroughTube(ref int x, ref int y, bool isLeft, bool isRight, bool isUp, bool isDown)
{
MazeDestination.SetPixel(x, y, Color.Green);
if (isLeft || isRight)
{
// check if we are moving through tube
while (IsInHorizontalTube(x, y))
{
if (isLeft && !IsValidWall(x - 1, y))
{
x--;
}
else if (isRight && !IsValidWall(x + 1, y))
{
x++;
}
// if wall is eminent turn around and move back
else if (isLeft && IsValidWall(x - 1, y))
{
isLeft = false;
isRight = true;
x++;
}
else if (isRight && IsValidWall(x + 1, y))
{
isLeft = true;
isRight = false;
x--;
}
}
}
if (isUp || isDown)
{
// check if we are moving through tube
while (IsInVerticalTube(x, y))
{
if (isUp && !IsValidWall(x, y - 1))
{
y--;
}
else if (isDown && !IsValidWall(x, y + 1))
{
y++;
}
// if wall is eminent turn around and move back
else if (isUp && IsValidWall(x, y - 1))
{
isUp = false;
isDown = true;
y++;
}
else if (isDown && IsValidWall(x, y + 1))
{
isUp = true;
isDown = false;
y--;
}
}
}
// now out of the tube, make sure we position element along wall and it isn't another tube to go through
if (isUp && !IsValidWall(x - 1, y) && !IsInHorizontalTube(x - 1, y))
{
x--;
}
if (isDown && !IsValidWall(x + 1, y) && !IsInHorizontalTube(x + 1, y))
{
x++;
}
if (isLeft && !IsValidWall(x, y + 1) && !IsInVerticalTube(x, y + 1))
{
y++;
}
if (isRight && !IsValidWall(x, y - 1) && !IsInVerticalTube(x, y - 1))
{
y--;
}
}