Dwarrowdelf.EnvironmentExtensions.AdjustMoveDir C# (CSharp) Method

        public static Direction AdjustMoveDir(this IEnvironmentObject env, IntVector3 location, Direction dir)
        {
            Debug.Assert(dir.IsValid());
            Debug.Assert(dir != Direction.None);
            Debug.Assert(dir.IsPlanarUpDown());

            if (EnvironmentExtensions.CanMoveFromTo(env, location, dir))
                return dir;

            if (dir == Direction.Up || dir == Direction.Down)
                return Direction.None;

            if (EnvironmentExtensions.CanMoveFromTo(env, location, dir | Direction.Up))
                return dir | Direction.Up;

            if (EnvironmentExtensions.CanMoveFromTo(env, location, dir | Direction.Down))
                return dir | Direction.Down;

            return Direction.None;
        }