public Vector3 GetNewDirection(HashSet <Vector3> directionsToExclude)
{
Vector3 up = transform.up;
Vector3 down = -transform.up;
Vector3 right = transform.right;
Vector3 left = -transform.right;
List <Vector3> directions = new List <Vector3> ();
directions.Add(up);
directions.Add(down);
directions.Add(right);
directions.Add(left);
foreach (Vector3 dir in directionsToExclude)
{
directions.Remove(dir);
}
if (directions.Count == 0)
{
directionsToExclude = new HashSet <Vector3> ();
directionsToExclude.Add(-snake.currentMoveDirection);
return(GetNewDirection(directionsToExclude));
}
int random = Random.Range(0, directions.Count);
Vector3 direction = directions [random];
if (useImprovedIA)
{
bool canGoInDirection = false;
while (!canGoInDirection)
{
if (Poly.CheckIfCanGoInDirection(lastReachedGroundPiece, direction, snake))
{
canGoInDirection = true;
}
else
{
directions.Remove(direction);
random = Random.Range(0, directions.Count);
direction = directions [random];
}
}
}
return(direction);
}