internal void LookDiagonally(Word word, int charIndex)
{
//ColumnCount 20, RowCount 10, charIndex 15, rowIndex 0, charactersAbove 0, charactersBelow 9
int
rowIndex = charIndex / ColumnCount,
charactersAbove = rowIndex,
charactersBelow = RowCount - rowIndex - 1,
charactersToLeft = charIndex % ColumnCount,
charactersToRight = ColumnCount - charactersToLeft - 1;
if (charactersAbove >= word.LengthMinusOne)
{
if (charactersToRight >= word.LengthMinusOne && LookUpAndRight(word, charIndex))
if(FoundWords.Add(new BTLRFoundWord(word.Text, charIndex, this)))
return;
if (charactersToLeft >= word.LengthMinusOne && LookUpAndLeft(word, charIndex))
if(FoundWords.Add(new BTRLFoundWord(word.Text, charIndex, this)))
return;
}
if (charactersBelow >= word.LengthMinusOne)
{
if (charactersToRight >= word.LengthMinusOne && LookDownAndRight(word, charIndex))
if(FoundWords.Add(new TBLRFoundWord(word.Text, charIndex, this)))
return;
if (charactersToLeft >= word.LengthMinusOne && LookDownAndLeft(word, charIndex))
if(FoundWords.Add(new TBRLFoundWord(word.Text, charIndex, this)))
return;
}
}
internal bool LookDown(Word word, int charIndex)
{
char[] possibleWord = new char[word.Length];
int startingRowIndex = charIndex / ColumnCount;
for (int i = 0; i < word.Length; i++)
possibleWord[i] = Characters[charIndex + ColumnCount * i];
return ArrayEquals(possibleWord, word.Text.ToCharArray());
}
internal void FindWord(Word word, int currentIndex)
{
LookHorizontally(word, currentIndex);
LookVertically(word, currentIndex);
LookDiagonally(word, currentIndex);
}
internal void LookVertically(Word word, int charIndex)
{
//ColumnCount 20, RowCount 10, charIndex 15, rowIndex 0, charactersAbove 0, charactersBelow 9
int
rowIndex = charIndex / ColumnCount,
charactersAbove = rowIndex,
charactersBelow = RowCount - rowIndex - 1;
if (charactersAbove >= word.LengthMinusOne && LookUp(word, charIndex))
if (FoundWords.Add(new BTFoundWord(word.Text, charIndex, this)))
return;
if (charactersBelow >= word.LengthMinusOne && LookDown(word, charIndex))
if(FoundWords.Add(new TBFoundWord(word.Text, charIndex, this)))
return;
}
internal bool LookToRight(Word word, int charIndex)
{
char[] possibleWord = new char[word.Length];
for (int i = 0; i < possibleWord.Length; i++)
possibleWord[i] = Characters[charIndex + i];
return ArrayEquals(possibleWord, word.Text.ToCharArray());
}
internal void LookHorizontally(Word word, int charIndex)
{
// ColumnCount 10, charIndex 5, char to left 5, char to right 4
int
charactersToLeft = charIndex % ColumnCount,
charactersToRight = ColumnCount - charactersToLeft - 1;
if (charactersToRight >= word.LengthMinusOne && LookToRight(word, charIndex))
if(FoundWords.Add(new LRFoundWord(word.Text, charIndex, this)))
return;
if (charactersToLeft >= word.LengthMinusOne && LookToLeft(word, charIndex))
if(FoundWords.Add(new RLFoundWord(word.Text, charIndex, this)))
return;
}