public int CalculateTreesHit(string filePath, Slope slope)
{
List <char[]> map = FileUtility.ParseFileToList(filePath, line => line.ToCharArray());
int treesHit = 0;
// Our current pointers
int currentRow = 0;
int currentCol = 0;
int mapWidth = map.First().Length;
// Loop through the map and determine if we hit a tree
do
{
char location = map[currentRow][currentCol];
if (location == '#')
{
treesHit++;
}
// Move right, including wrap around
currentCol += slope.Right;
if (currentCol >= mapWidth)
{
currentCol = currentCol % mapWidth;
}
// Move down
currentRow += slope.Down;
} while (currentRow < map.Count);
return(treesHit);
}
public string PartA()
{
string filePath = @"Three\DayThreeInput.txt";
Slope slope = new Slope(1, 3);
int treesHit = CalculateTreesHit(filePath, slope);
return(treesHit.ToString());
}