private void installNewPiece() {
next_piece_canvas.clear();
cur_piece = next_piece;
cur_piece.setPosition(3, -4);
if (cur_piece.canPaste()) {
next_piece = randomPiece();
next_piece.setPosition(0, 0);
next_piece.paste(next_piece_grid);
next_piece_canvas.repaint();
} else gameOver();
}
private void removeFullRows() {
int n_full = countFullRows();
score_label.addValue((int) (10 * Math.pow(2, n_full) - 10));
if (n_full == 0) return;
sounds.playDestroyRows(n_full);
if (num_rows_deleted / DELETED_ROWS_PER_LEVEL
!= (num_rows_deleted + n_full) / DELETED_ROWS_PER_LEVEL) {
timer.faster();
level_label.addValue(n_full / DELETED_ROWS_PER_LEVEL + 1);
level_label.repaint();
}
rows_deleted_label.addValue(n_full);
num_rows_deleted += n_full;
for (int i = ROWS - 1; i >= 0; i--) while (rowIsFull(i)) removeRow(i);
game_grid.repaint();
}