Workshop › Breakout › Step 15 of 39

Draw the bricks

What we are doing

We build the row at the start and draw every brick that is still alive, with another kind of loop: for ... of.

```js
  for (const brick of bricks) {
    if (!brick.alive) continue
    ctx.fillStyle = '#ef4444'
    ctx.fillRect(brick.x, brick.y, BRICK_W, BRICK_H)
  }

buildBricks()
```

What it means

• for (const brick of bricks) runs the body once per brick, calling the current one brick.
• ! means "not"; continue skips to the next brick. So dead bricks are not drawn.
• The bricks are drawn right after the background, so the paddle and ball are drawn on top.
• buildBricks() at the bottom builds the row once, before the loop starts.

Your turn

1. In draw, under the background's fillRect line, leave an empty line and write the for loop.
2. Write buildBricks() just above resetBall() at the bottom.

Skills: Loops, Drawing on a canvas

← A row of bricks A whole wall: a loop inside a loop →

All steps

1. The field and the paddle
2. Draw again and again
3. Keep a number inside limits
4. Follow the mouse
5. A canvas shown at another size
6. A ball with a velocity
7. Draw a round ball
8. Move the ball
9. Bounce off the side walls
10. Bounce off the ceiling
11. The open floor
12. Bounce off the paddle
13. Aim with the paddle
14. A row of bricks
15. Draw the bricks
16. A whole wall: a loop inside a loop
17. A color for every row
18. Circle meets box
19. Break a brick
20. Hitting the side of a brick
21. Wait on the paddle
22. Ride along with the paddle
23. Launch the ball
24. Click or press Space
25. Remember which keys are held
26. Steer with the arrow keys
27. Three lives
28. Lives and a hint on screen
29. Game over
30. Keep score
31. Show the score
32. Win the game
33. One function for a new game
34. Play again
35. A burst of particles
36. Break into sparks
37. Move, fall and disappear
38. Fade out
39. Build it yourself: tough bricks