Workshop › Tetris-style Blocks › Step 30 of 32

Drop it

What we are doing

Space drops the piece to the bottom at once and locks it. Dropping on purpose is rewarded: 1 point per row with the Down arrow, 2 per row with Space.

```js
function hardDrop() {
  while (tryMove(0, 1)) score += 2
  lock()
}

  if (event.key === 'ArrowDown') {
    if (tryMove(0, 1)) score += 1
  }
  if (event.key === ' ') hardDrop()
```

What it means

• while (condition) ... repeats as long as the condition is true. Here the condition itself moves the piece: each successful tryMove(0, 1) adds 2 points, and the first refusal ends the loop. Then lock().
• The Down arrow scores 1 only if the piece really moved.

Your turn

1. Write hardDrop under softDrop.
2. In the key listener, replace the ArrowDown line with the block and add the Space line under it.

Skills: Keyboard and mouse input, Loops

← The next piece The ghost piece →

All steps

1. The well
2. The board as rows of numbers
3. Draw one cell
4. Draw the whole board
5. The number is the color
6. A piece is a small grid
7. A list of shapes
8. All seven pieces
9. Does it fit inside the well?
10. Blocks are in the way
11. Try, then move
12. Move with the arrows
13. Turn a matrix
14. Turn with Up
15. Wall kicks
16. Falling by itself
17. A random piece at the top
18. Land and lock
19. One function starts a game
20. When the pile reaches the top
21. Game Over on screen
22. Play again
23. Clear full rows
24. Points for lines
25. The side panel
26. Levels
27. Faster every level
28. A fair bag of pieces
29. The next piece
30. Drop it
31. The ghost piece
32. Build it yourself: hold a piece