/// <summary>
/// Avoid creating matches in initial grid
/// </summary>
/// <param name="possiblTokens"></param>
/// <param name="selected"></param>
/// <param name="x">x Position of Selected</param>
/// <param name="y">y Position of Selected</param>
static TokenClass ReturnNonmatchingToken(TokenClass.TokenTypes[] possiblTokens, TokenClass.TokenTypes selected, int x, int y)
{
//we want to avoid matches when the drid is first created.
//This function will check in both direction for 2 squares for mataching
//Initial grid scans left to right bottom to top, we only need to look back
bool matchFound = false;
//-x
if (!matchFound && x >= 2)
{
if (Grid[x - 2, y].type == selected && Grid[x - 1, y].type == selected)
{
matchFound = true;
}
}
//-y
if (!matchFound && y >= 2)
{
if (Grid[x, y - 2].type == selected && Grid[x, y - 1].type == selected)
{
matchFound = true;
}
}
if (matchFound)
{
//remove the current selection from the possiblities and select a new one
TokenClass.TokenTypes[] newPossibleList = new TokenClass.TokenTypes[possiblTokens.Length - 1];
int addedCount = 0;
for (int i = 0; i < possiblTokens.Length; i++)
{
if (possiblTokens[i] != selected)
{
newPossibleList[addedCount] = possiblTokens[i];
addedCount++;
}
}
TokenClass.TokenTypes newSelected = newPossibleList[Random.Range(0, newPossibleList.Length)];
return(ReturnNonmatchingToken(newPossibleList, newSelected, x, y));
}
else
{
return(new TokenClass(null, selected, new GridPos(x, y)));
}
}
public static void CreateNewGrid(TokenClass.TokenTypes[] possibleTokens)
{
//iterate over the whole grid and assign a random token from a select list.
for (int y = 0; y < GRID_SIZE; y++)
{
for (int x = 0; x < GRID_SIZE; x++)
{
int rnd = Random.Range(0, possibleTokens.Length);
TokenClass.TokenTypes SelectedToken = possibleTokens[rnd];
Grid[x, y] = ReturnNonmatchingToken(possibleTokens, SelectedToken, x, y);
}
}
}
