internal static void Create(List<Move> moves, Field node, Move move, Direction direction)
{
Field near = node[direction];
if (near == null) return;
Field far = near[direction];
if (far == null) return;
if (node.CanUse() && near.CanFree() && far.CanFree())
{
Append(moves, move, move.Create(node, near, far));
}
}
internal bool CanUndoMove(Field near, Field far)
{
return CanFree() && near.CanUse() && far.CanUse();
}