Workshop › Rhythm Lanes › Step 26 of 35

The multiplier

What we are doing

Every ten hits in a row raise the score multiplier by one, up to four. Late in a long streak every note matters four times as much, and one miss costs the multiplier too.

```js
const multiplier = () => Math.min(4, 1 + Math.floor(combo / 10))

    score += 300 * multiplier()

    score += 100 * multiplier()

  ctx.textAlign = 'right'
  ctx.fillText('Combo ' + combo + '  x' + multiplier(), canvas.width - 12, 24)
```

What it means

• Math.floor(combo / 10) is how many full tens the combo has (Math.floor rounds down); plus 1 it is the multiplier.
• Math.min(4, ...) takes the smaller number, so it never goes above 4.
• Points are multiplied by multiplier() at the moment of the hit, after the combo grew.
• textAlign = 'right' puts the text's right end at x, 12 pixels from the right edge.

Your turn

1. Under noteY, after an empty line, write multiplier.
2. In press, multiply the two scores by multiplier().
3. In draw, under the Score line, write the two combo lines.

Skills: Game states

← Hits in a row The song ends →

All steps

1. A stage for the notes
2. The first lane
3. Four lanes with a loop
4. The hit line
5. A function that draws
6. The song as text
7. From text to notes
8. The clock decides where
9. Draw the notes
10. A clock that ticks
11. The game loop
12. Lanes that light up
13. Keys for the lanes
14. Show the keys
15. Hit the closest note
16. Close enough in time
17. One press, one hit
18. A message on the screen
19. Say Hit
20. Let the message go
21. Perfect or good
22. Keep count
23. Missed notes
24. Score
25. Hits in a row
26. The multiplier
27. The song ends
28. Stop the clock
29. Accuracy
30. The grade
31. The results
32. Play again
33. Best score
34. Lanes you can tap
35. Build it yourself: a speed setting