/// <summary>
/// <see cref="Intention"/>が<see cref="Intentions.Move"/>または<see cref="Intentions.Remove"/>の時に次に行く座標を返します
/// マップの領域等は考慮しません
/// </summary>
/// <param name="current"></param>
/// <returns></returns>
public Point GetNextPoint(Point current)
{
if (Intention != Intentions.Stay)
{
current = current.Move(Direction);
}
return(current);
}
/// <summary>
/// 指定した点を中心として移動した方向がフィールド内であるかを判定します
/// </summary>
/// <param name="point"></param>
/// <returns></returns>
protected bool IsInField(Point point, Direction direction)
{
var p = point.Move(direction);
if (p.X < 0 || p.Y < 0 || p.X >= Field.Width || p.Y >= Field.Height)
{
return(false);
}
return(true);
}
/// <summary>
/// 現在位置を含まず<paramref name="wayPoints"/>を経由して移動するルートを計算します
/// </summary>
/// <param name="wayPoints">経由する位置</param>
public List <(Point, Direction)> Way(params Point[] wayPoints)
{
List <(Point, Direction)> move = new List <(Point, Direction)>();
Point last = this;
foreach (var p in wayPoints)
{
var delta = p - last;
int moveX = Math.Abs(delta.X), moveY = Math.Abs(delta.Y);
int count = Math.Max(moveX, moveY);
for (int i = 0; count > i; i++)
{
Direction direction = Direction.None;
if (moveX-- > 0)
{
if (delta.X > 0)
{
direction |= Direction.Right;
}
else if (delta.X < 0)
{
direction |= Direction.Left;
}
}
if (moveY-- > 0)
{
if (delta.Y > 0)
{
direction |= Direction.Down;
}
else if (delta.Y < 0)
{
direction |= Direction.Up;
}
}
last = last.Move(direction);
move.Add((last, direction));
}
}
return(move);
}
