private bool CanSelectGridItem(GridItemView gridItem)
{
if (gridItem == null || gridItem.IsEmpty)
{
return(false); // invalid
}
if (_selectedGridItems.Count == 0)
{
return(true); // first selection
}
var itemConfig = GameConfig.GetGridItem(gridItem.ID);
if (itemConfig.MatchType == GridItemMatchType.None)
{
return(false);
}
var previousItemConfig = _selectedGridItems[_selectedGridItems.Count - 1].GridItemConfig;
if (itemConfig.MatchType == GridItemMatchType.Category || previousItemConfig.MatchType == GridItemMatchType.Category)
{
if (itemConfig.Category != previousItemConfig.Category)
{
return(false);
}
}
else if (itemConfig.MatchType == GridItemMatchType.Exact)
{
if (itemConfig.ID != previousItemConfig.ID)
{
return(false);
}
}
if (_selectedGridItems.Contains(gridItem))
{
return(false); // already selected
}
var matchRules = GameConfig.GetMatchRules(_levelConfig.matchRules);
if (matchRules.MaxSelection > matchRules.MinSelection && _selectedGridItems.Count > matchRules.MaxSelection)
{
return(false);
}
if (GridIndex.IsNeighbor(gridItem.Index, _selectedGridItems[_selectedGridItems.Count - 1].Index))
{
return(true); // must neighbor the last selected item
}
return(false);
}
private bool CanDeselectGridItems(GridItemView gridItem)
{
if (gridItem == null)
{
return(false); // invalid
}
if (_selectedGridItems.Count < 2)
{
return(false); // not enough items selected
}
if (!_selectedGridItems.Contains(gridItem))
{
return(false); // not selected
}
if (gridItem == _selectedGridItems[_selectedGridItems.Count - 2])
{
return(true); // take one step back
}
if (!GridIndex.IsNeighbor(gridItem.Index, _selectedGridItems[_selectedGridItems.Count - 1].Index))
{
return(true); // must NOT neighbor the last selected item to trace back further (else it's annoying)
}
return(false);
}
private bool IsValidMatch(List <GridIndex> indices, out List <Tuple <int, GridNodeState> > matchedItems)
{
var matchRules = GameConfig.GetMatchRules(Config.matchRules);
matchedItems = null;
if (indices == null)
{
return(false);
}
if (indices.Count < matchRules.MinSelection)
{
return(false);
}
if (matchRules.MaxSelection > matchRules.MinSelection && indices.Count > matchRules.MaxSelection)
{
return(false);
}
int pointsMultiplier = 1;
var matchedNodes = new List <GridNodeState>(indices.Count);
for (int i = 0; i < indices.Count; i++)
{
var matchedNode = TryGetGridNodeState(indices[i]);
if (matchedNode == null || !matchedNode.IsFilled())
{
return(false); // must select valid items
}
matchedNodes.Add(matchedNode);
pointsMultiplier *= matchedNode.GridNodeConfig.MatchPointsMatchMultiplier;
}
matchedItems = new List <Tuple <int, GridNodeState> >(indices.Count)
{
new Tuple <int, GridNodeState> (
(matchRules.MatchPointsBase + matchedNodes[0].GridItemConfig.MatchPoints) * matchedNodes[0].GridNodeConfig.MatchPointsItemMultiplier * pointsMultiplier,
matchedNodes[0]
)
};
var previousItem = matchedNodes[0];
for (int i = 1; i < matchedNodes.Count; i++)
{
var item = TryGetGridNodeState(indices[i]);
var itemConfig = GameConfig.GetGridItem(item.ItemId);
if (itemConfig.MatchType == GridItemMatchType.None)
{
return(false);
}
if (itemConfig.MatchType == GridItemMatchType.Category || previousItem.GridItemConfig.MatchType == GridItemMatchType.Category)
{
if (itemConfig.Category != previousItem.GridItemConfig.Category)
{
return(false);
}
}
else if (itemConfig.MatchType == GridItemMatchType.Exact)
{
if (item.ItemId != previousItem.GridItemConfig.ID)
{
return(false);
}
}
if (!GridIndex.IsNeighbor(item.Index, previousItem.Index))
{
return(false); // must select neighbors
}
matchedItems.Add(new Tuple <int, GridNodeState> (
(matchRules.MatchPointsBase + matchedNodes[i].GridItemConfig.MatchPoints + (matchRules.MatchPointsIncrement * i)) * matchedNodes[i].GridNodeConfig.MatchPointsItemMultiplier * pointsMultiplier,
matchedNodes[i]
));
previousItem = item;
}
if (matchRules.WordCheck)
{
var word = new StringBuilder();
foreach (var item in matchedItems)
{
word.Append((char)GameConfig.GetGridItem(item.Item2.ItemId).MatchIndex);
}
if (!WordMap.Words.FindWord(word.ToString().ToLower(), out var wordTypes))
{
return(false);
}
}
return(true);
}