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); }