Test-Driven Java Development, Second Edition - Second Edition

Requirement 8 – win condition (IV)

The last requirement is the last win condition. It is pretty similar to the last two; in this case, in a diagonal direction.

If a player inserts a disc and connects more than three discs of his color in a straight diagonal line, then that player wins.

This is a possible implementation for this last requirement. The code is very similar to the other win conditions because the same statement must be fulfilled:

... private void checkWinCondition(int col, int row) { ... // Diagonal checks int startOffset = Math.min(col, row); int column = col - startOffset, auxRow = row - startOffset; stringJoiner = new StringJoiner(""); do { stringJoiner.add(board[column++][auxRow++].toString()); } while (column < COLUMNS && ...