public bool TryMoveTurtle(Turtle turtle, int maxPositionX, int maxPositionY)
{
var currentPositionX = turtle.CurrentPositionX;
var currentPositionY = turtle.CurrentPositionY;
switch (turtle.CurrentDirection)
{
case DirectionType.N:
currentPositionY--;
break;
case DirectionType.E:
currentPositionX++;
break;
case DirectionType.S:
currentPositionY++;
break;
case DirectionType.W:
currentPositionX--;
break;
default:
throw new NotImplementedException();
}
if (currentPositionX > maxPositionX ||
currentPositionX < 0 ||
currentPositionY > maxPositionY ||
currentPositionY < 0)
{
// Turtle keeps hitting a wall untill it changes direction,
// otherwise we can introduce a new exception for this case
return(false);
}
else
{
_turtleFactory.UpdatePosition(turtle, currentPositionX, currentPositionY);
return(true);
}
}
