public boolean moveDown() {
for (Cell cell : tetromino.getCells(this)) {
if (isOccupied(cell.getCol(), cell.getRow() + 1)) return false;
}
tetromino.fall();
return true;
}
/** Déplace le tetromino vers la droite */
public boolean moveRight() {
for (Cell cell : tetromino.getCells(this))
if (isOccupied(cell.getCol() + 1, cell.getRow())) return false;
tetromino.moveRight();
return true;
}