/// <summary>
/// Implementation of IMovementAlgorithm interface.
/// Provides a direction of movement for the given enemy.
/// </summary>
/// <param name="enemy">The enemy that should be moved.</param>
/// <returns>The suggested direction of movement for the given enemy.</returns>
public Direction ProvideDirection(Enemy enemy)
{
int start = _width * (int)enemy.X + (int)enemy.Y;
int end = _width * (int)_player.X + (int)_player.Y;
int solution;
int m = _graph.AStar(start, end, out solution);
if (m - start == -1)
{
return(Direction.Left);
}
if (m - start == 1)
{
return(Direction.Right);
}
if (m - start < 0)
{
return(Direction.Up);
}
if (m - start > 0)
{
return(Direction.Down);
}
return(Direction.None);
}
private void AStarAlghorithTest(int s, int e, int solution)
{
int sol;
_graph1.AStar(s, e, out sol);
Assert.Equal(solution, sol);
}