public static IList <CrackboxGridItem> CreateGrid()
{
return(new List <CrackboxGridItem>
{
CrackboxGridItem.Create(0, 4, 12, 3, 1, new List <int> {
1, 4, 5
}),
CrackboxGridItem.Create(1, 5, 13, 0, 2, new List <int> {
0, 2, 4, 5, 6
}),
CrackboxGridItem.Create(2, 6, 14, 1, 3, new List <int> {
1, 3, 5, 6, 7
}),
CrackboxGridItem.Create(3, 7, 15, 2, 0, new List <int> {
2, 6, 7
}),
CrackboxGridItem.Create(4, 8, 0, 7, 5, new List <int> {
0, 1, 5, 8, 9
}),
CrackboxGridItem.Create(5, 9, 1, 4, 6, new List <int> {
0, 1, 2, 4, 6, 8, 9, 10
}),
CrackboxGridItem.Create(6, 10, 2, 5, 7, new List <int> {
1, 2, 3, 5, 7, 9, 10, 11
}),
CrackboxGridItem.Create(7, 11, 3, 6, 4, new List <int> {
2, 3, 6, 10, 11
}),
CrackboxGridItem.Create(8, 12, 4, 11, 9, new List <int> {
4, 5, 9, 12, 13
}),
CrackboxGridItem.Create(9, 13, 5, 8, 10, new List <int> {
4, 5, 6, 8, 10, 12, 13, 14
}),
CrackboxGridItem.Create(10, 14, 6, 9, 11, new List <int> {
5, 6, 7, 9, 11, 13, 14, 15
}),
CrackboxGridItem.Create(11, 15, 7, 10, 8, new List <int> {
6, 7, 10, 14, 15
}),
CrackboxGridItem.Create(12, 0, 8, 15, 13, new List <int> {
8, 9, 13
}),
CrackboxGridItem.Create(13, 1, 9, 12, 14, new List <int> {
8, 9, 10, 12, 14
}),
CrackboxGridItem.Create(14, 2, 10, 13, 15, new List <int> {
9, 10, 11, 13, 15
}),
CrackboxGridItem.Create(15, 3, 11, 14, 12, new List <int> {
10, 11, 14
})
});
}
public CrackboxGridItem(CrackboxGridItem item)
{
Index = item.Index;
UpNeighbour = item.UpNeighbour;
DownNeighbour = item.DownNeighbour;
LeftNeighbour = item.LeftNeighbour;
RightNeighbour = item.RightNeighbour;
IsBlack = item.IsBlack;
Value = item.Value;
IsLocked = item.IsLocked;
Neighbours = item.Neighbours;
}
private int PlaceItem(CrackboxGridItem[] items, int index)
{
CrackboxGridItem next = null;
var neighbours = Shuffle(items[index].Neighbours).ToArray();
foreach (var neighbour in neighbours)
{
if (items[neighbour].Value == 0)
{
next = items[neighbour];
}
else
{
// That place was already taken.
continue;
}
var candidates = Shuffle(UtilityMethods.FindCandidates(items[index].Value, this.remaining.ToArray())).ToArray();
foreach (var candidate in candidates)
{
if (next.Value != 0)
{
throw new InvalidOperationException(string.Format("Trying to place value in index {0} that already has value.", next.Index));
}
var nextNeighbours = Shuffle(next.Neighbours);
if (CanPlace(candidate, nextNeighbours, items))
{
this.remaining.Remove(candidate);
next.Value = candidate;
index = next.Index;
return(index);
}
}
}
return(-1);
}