Workshop › OutRun-style Racer › Step 11 of 44

Striped grass

What we are doing

When the grass has stripes too, speed is much easier to feel. Behind every segment we paint a band of grass across the whole width: light green on light segments, dark green on dark ones.

```js
const light = Math.floor(index / 3) % 2 === 0
ctx.fillStyle = light ? '#16a34a' : '#15803d'
ctx.fillRect(0, far.y, W, near.y - far.y + 1)
```

What it means

• The band goes from the left edge to the right (0 to W), from the segment's far edge (far.y) down to its near edge (near.y). The + 1 leaves no gap between bands.
• It is painted before the kerb and the road, so they come on top of it.

Your turn

In the second loop, right under the light line, write the two grass lines.

Skills: Drawing on a canvas

← Kerbs and a center line Moving is one number →

All steps

1. Sky and ground
2. Draw again and again
3. Perspective
4. One piece of road
5. A road made of segments
6. Where we are on the track
7. The road ahead
8. Stripes
9. Paint from far to near
10. Kerbs and a center line
11. Striped grass
12. Moving is one number
13. Which keys are down?
14. The gas pedal
15. Brake, coast and a top speed
16. Your car
17. Speedometer
18. A pedal for phones
19. Move the camera sideways
20. Steering
21. No turning on the spot
22. The grass is slow
23. Steering by touch
24. A track with curves
25. Bend the road
26. No jumps in the curve
27. Which segment am I on?
28. Curves pull you outwards
29. Other cars
30. Distance on a loop
31. Cars that shrink with distance
32. Traffic moves
33. Rear-end crash
34. Counting laps
35. Show the lap
36. A lap timer
37. Show the time
38. Best lap
39. Show the best lap
40. Racing or finished
41. The finish line
42. Finished!
43. Race again
44. Build it yourself: beat the clock