public bool CanBeUnlocked(List <Chip> chips)
{
if (chips == null || !chips.Any())
{
return(false);
}
if (!chips.Any(x => x.LeftColor == _beginningMarkerColor))
{
return(false);
}
if (!chips.Any(x => x.RightColor == _endMarkerColor))
{
return(false);
}
if (_chipChainBuilder == null)
{
return(false);
}
List <ChipChain> chains = _chipChainBuilder.GetChains(_beginningMarkerColor, chips);
FoundUnlockSequence = chains.LastOrDefault(x => x.Last().RightColor == _endMarkerColor);
return(FoundUnlockSequence != null);
}
public List<ChipChain> BuildChains(Chip headChip, List<Chip> remainingChips)
{
List<ChipChain> chains = new List<ChipChain>();
ChipChain possibleChain = new ChipChain() { headChip };
if (!remainingChips.Any())
{
chains.Add(possibleChain);
}
else
{
List<Chip> nextChips = remainingChips.Where(c => c.LeftColor == possibleChain.Last().RightColor).ToList();
foreach (Chip nextChip in nextChips)
{
List<Chip> proxyRemainingChips = new List<Chip>(remainingChips);
ChipChain proxyPossibleChain = new ChipChain(possibleChain);
proxyRemainingChips.Remove(nextChip);
proxyPossibleChain.Add(nextChip);
if (!proxyRemainingChips.Any())
{
chains.Add(proxyPossibleChain);
}
else
{
BuildChain(chains, proxyRemainingChips, proxyPossibleChain);
}
}
}
return chains;
}
public bool CanBeUnlocked(List<Chip> chips)
{
if (chips == null || !chips.Any())
return false;
if (!chips.Any(x => x.LeftColor == _beginningMarkerColor))
return false;
if (!chips.Any(x => x.RightColor == _endMarkerColor))
return false;
if (_chipChainBuilder == null)
return false;
List<ChipChain> chains = _chipChainBuilder.GetChains(_beginningMarkerColor, chips);
FoundUnlockSequence = chains.LastOrDefault(x => x.Last().RightColor == _endMarkerColor);
return FoundUnlockSequence != null;
}
private void BuildChain(List<ChipChain> chains, List<Chip> remainingChips, ChipChain possibleChain)
{
List<Chip> nextChips = remainingChips.Where(c => c.LeftColor == possibleChain.Last().RightColor).ToList();
foreach (Chip nextChip in nextChips)
{
List<Chip> proxyRemainingChips = new List<Chip>(remainingChips);
ChipChain proxyPossibleChain = new ChipChain(possibleChain);
proxyRemainingChips.Remove(nextChip);
proxyPossibleChain.Add(nextChip);
if (!proxyRemainingChips.Any())
{
chains.Add(proxyPossibleChain);
}
else
{
BuildChain(chains, proxyRemainingChips, proxyPossibleChain);
}
}
}