Piece ghost;

if (highlighted != null && (ghost = highlighted.tryClickGhost()) != null) {
    if (currentPlayer == 0)
        currentPlayer = ghost.getArmy();
    highlighted.move(ghost);
    if (ghost.getVictim() != null)
        pieces.remove(ghost.getVictim());
    for (Piece piece : pieces)
        piece.computeGhosts(this);
    for (Piece newGhost : highlighted.getGhosts())
        if (newGhost.getVictim() != null) {
            extraRound = true;
            return;
        }
    highlighted = null;
    currentPlayer = currentPlayer == 1 ? 2 : 1;
    return;
}

for (Piece piece : pieces) {
    if (piece.isClickable() && (currentPlayer == 0 || currentPlayer == piece.getArmy())) {
        highlighted = piece == highlighted ? null : piece;
        if (highlighted == null && extraRound) {
            extraRound = false;
            currentPlayer = currentPlayer == 1 ? 2 : 1;
        }
        break;
    }
}