private string GenerateObstructionReport(Coordinates blockingObstacleCoords, char moveInstruction)
{
return string.Format("Cannot move {0}. Obstacle encountered at {1},{2}.",
CalculateDirectionOfMove(moveInstruction, Heading).ToHeadingDescription(), blockingObstacleCoords.X,
blockingObstacleCoords.Y);
}
public Rover(int xStartCoord, int yStartCoord, params Obstacle[] obstacles)
{
Coordinates = new Coordinates(xStartCoord, yStartCoord);
Heading = 'N';
Obstacles = obstacles;
}
private Coordinates CalculateNewPosition(char instruction)
{
int x = X;
int y = Y;
bool isForwards = instruction == 'F';
switch (Heading)
{
case 'N':
y = Y + (isForwards ? 1 : -1);
break;
case 'S':
y = Y + (isForwards ? -1 : 1);
break;
case 'E':
x = X + (isForwards ? 1 : -1);
break;
case 'W':
x = X + (isForwards ? -1 : 1);
break;
}
var newCoords = new Coordinates(x, y);
return newCoords.Wrap();
}
