private static int GetNewDirection(PositionInMatrix position, int currrentDir)
{
while (!CanGoInThisDirection(position, currrentDir))
{
currrentDir = (currrentDir == 7) ? 0 : currrentDir + 1;
}
return currrentDir;
}
private static bool CanGoInThisDirection(PositionInMatrix position, int currentDir)
{
int nextRow = position.CurrenRow + directionsRow[currentDir];
int nextCol = position.CurrentCol + directionsCol[currentDir];
var result =
IsInsideMatrix(nextRow, nextCol) &&
matrix[nextRow, nextCol] == 0;
return result;
}
private static bool IsNextToEmptyCell(PositionInMatrix position)
{
int row;
int col;
for (int i = 0; i < directionsRow.Length; i++)
{
row = position.CurrenRow + directionsRow[i];
col = position.CurrentCol + directionsCol[i];
if (IsInsideMatrix(row, col) && matrix[row, col] == 0)
{
return true;
}
}
return false;
}
private static bool TryGetEmptyCell(PositionInMatrix position)
{
for (int row = 0; row < matrix.GetLength(0); row++)
{
for (int col = 0; col < matrix.GetLength(1); col++)
{
if (matrix[row, col] == 0)
{
position.CurrenRow = row;
position.CurrentCol = col;
return true;
}
}
}
position.CurrenRow = 0;
position.CurrentCol = 0;
return false;
}