/// <summary>
/// The equivalent of dropping one of the dots into the frame
/// </summary>
/// <param name="index">1-7, the horizontal left to right coordinate of the hole to "drop" it into.</param>
public void DropDot(int index)
{
if (index <= Columns && index >= 1)
{
Connect4Colour[] column = ConnectFourGrid[index - 1];
int columnCount = column.Count(x => x != null);
if (columnCount < Rows)
{
column[Utillity.Clamp(columnCount, 0, Rows)] = CurrPlayerColour;
//check if there are matches whenever a dot drops
LookForFourInARow(index - 1, columnCount);
if (!GameWon)
{
//swap colour
if (CurrPlayerColour == Connect4Colour.Red)
{
CurrPlayerColour = Connect4Colour.Yellow;
}
else
{
CurrPlayerColour = Connect4Colour.Red;
}
}
}
}
}
private bool IsFourInARowForDir(int gridX, int gridY, int xChange, int yChange)
{
int matchCount = 0;
int xUpperBound = Utillity.Clamp(gridX + (3 * xChange), 0, Columns - 1);
int yUpperBound = Utillity.Clamp(gridY + (3 * yChange), 0, Rows - 1);
//yes it's hacky
//no i don't care, it works
bool xRan = false;
bool yRan = false;
bool skipOne = false;
for (int x = Utillity.Clamp(gridX - (3 * xChange), 0, Columns - 1); x <= xUpperBound && !xRan; x += xChange)
{
for (int y = Utillity.Clamp(gridY - (3 * yChange), 0, Rows - 1); y <= yUpperBound && !yRan; y += yChange)
{
if (ConnectFourGrid[x][y] == CurrPlayerColour)
{
matchCount++;
if (matchCount >= 4)
{
return(true);
}
}
else
{
matchCount = 0;
}
if (yChange == 0)
{
yRan = true;
skipOne = true;
}
}
if (xChange == 0)
{
xRan = true;
}
if (skipOne)
{
continue;
}
if (yChange == 0)
{
if (ConnectFourGrid[x][gridY] == CurrPlayerColour)
{
matchCount++;
if (matchCount >= 4)
{
return(true);
}
}
else
{
matchCount = 0;
}
}
}
return(false);
}