public void KeyPress()
{
var key = Console.ReadKey(true);
switch (key.Key)
{
case ConsoleKey.LeftArrow:
board.Move(Board.Directions.Left);
break;
case ConsoleKey.RightArrow:
board.Move(Board.Directions.Right);
break;
case ConsoleKey.UpArrow:
board.Move(Board.Directions.Up);
break;
case ConsoleKey.DownArrow:
board.Move(Board.Directions.Down);
break;
case ConsoleKey.Escape:
IsRunning = false;
break;
}
}
public bool StartGame()
{
Direction lastMove = Direction.LEFT;
int n = 0;
bool found = false;
bool run = true;
while (run)
{
Direction d = board.GetDirection(true);
if (d == Direction.END)
{
System.Console.Out.Write("Found target");
return(true);
}
if (d == Direction.NONE)
{
if (board.X_row == 0) // I am a the top
{
switch (lastMove)
{
case Direction.LEFT:
// can move Right?
if (board.CanMoveRight(board.X_col, board.X_row, true) == 1)
{
board.Move(Direction.RIGHT);
}
else
{
throw new Exception("Invalid board");
}
break;
case Direction.RIGHT:
if (board.CanMoveLeft(board.X_col, board.X_row, true) == 1)
{
board.Move(Direction.LEFT);
}
else
{
throw new Exception("Invalid board");
}
break;
default:
if (board.CanMoveDown(board.X_col, board.X_row, false) == 1)
{
board.Move(Direction.DOWN);
}
else
{
throw new Exception("Invalid board");
}
break;
}
}
else if (board.X_row >= board.Rows - 1) // I am at the bottom
{
switch (lastMove)
{
case Direction.RIGHT:
n = board.X_col;
found = false;
for (int c = n; c > 0; c--)
{
if (board.CanMoveUp(board.X_col, board.X_row, false) == 1)
{
board.Move(Direction.UP);
found = true;
break;
}
if (board.CanMoveLeft(board.X_col, board.X_row, false) == 1)
{
board.Move(Direction.LEFT);
}
}
if (!found)
{
throw new Exception("invalid board");
}
break;
case Direction.LEFT:
found = false;
n = board.X_col;
for (int c = n; c < board.Cols; c++)
{
if (board.CanMoveUp(board.X_col, board.X_row, false) == 1)
{
board.Move(Direction.UP);
found = true;
break;
}
if (board.CanMoveRight(board.X_col, board.X_row, false) == 1)
{
board.Move(Direction.RIGHT);
}
}
if (!found)
{
throw new Exception("invalid board");
}
break;
}
}
else
{
/**
* get the last direction
*
* the idea is to move left and right finding a up/down
* position if none found abort else move to that new
* direction
*
*/
Square last = board.Last;
found = false;
for (int c = last.Col; c < board.Cols; c++)
{
if (board.CanMoveRight(board.X_col, board.X_row, false) == 1)
{
board.Move(Direction.RIGHT);
}
if (board.CanMoveUp(board.X_col, board.X_row, true) == 1)
{
board.Move(Direction.UP);
found = true;
break;
}
if (board.CanMoveDown(board.X_col, board.X_row, true) == 1)
{
board.Move(Direction.DOWN);
found = true;
break;
}
}
if (!found)
{
for (int c = last.Col; c >= 0; c--)
{
if (board.CanMoveLeft(board.X_col, board.X_row, false) == 1)
{
board.Move(Direction.LEFT);
}
if (board.CanMoveUp(board.X_col, board.X_row, true) == 1)
{
board.Move(Direction.UP);
found = true;
break;
}
if (board.CanMoveDown(board.X_col, board.X_row, true) == 1)
{
board.Move(Direction.DOWN);
found = true;
break;
}
}
}
if (!found)
{
throw new Exception("System error,unable to find a solution, last " + board.X_col + " " + board.X_row);
}
}
continue;
}
board.Move(d);
}
return(false);
}
