import 'dart:math' as math;

enum CardinalDirection {
  east(0.0),
  south(math.pi / 2),
  west(math.pi),
  north(3 * math.pi / 2)
  ;

  final double radians;
  const CardinalDirection(this.radians);

  /// Helper to decode Wolf3D enemy directional blocks
  static CardinalDirection fromEnemyIndex(int index) {
    switch (index % 4) {
      case 0:
        return CardinalDirection.east;
      case 1:
        return CardinalDirection.north;
      case 2:
        return CardinalDirection.west;
      case 3:
        return CardinalDirection.south;
      default:
        return CardinalDirection.east;
    }
  }
}