Workshop › Conway's Game of Life › Step 10 of 32

Draw again and again

What we are doing

draw runs only once, so a new generation would never reach the screen. A loop redraws the picture about 60 times a second with requestAnimationFrame.

```js
function loop() {
  draw()
  requestAnimationFrame(loop)
}

reset()
requestAnimationFrame(loop)
```

What it means

• loop draws once and books the next run with requestAnimationFrame(loop), so it never stops.
• The last line starts the loop. It replaces the single draw() call.

Your turn

At the bottom, write loop above reset() and replace draw() with requestAnimationFrame(loop).

Skills: The game loop

← Four rules Next generation with N →

All steps

1. The board
2. Measure the grid
3. One living cell
4. A function that draws
5. The world in memory
6. Draw every living cell
7. A random soup
8. Count the neighbours
9. Four rules
10. Draw again and again
11. Next generation with N
12. Count the generations
13. Show the generation
14. A world without edges
15. Count the living
16. A generation every few frames
17. Let it live
18. Running or not
19. One place for the buttons
20. Space to play, N to step
21. Clear and shuffle
22. Where is the pointer?
23. Which cell?
24. Click a cell
25. Paint or erase?
26. Drag to paint
27. Patterns from text
28. The glider gun
29. Fire the gun
30. Buttons on the screen
31. Tap the buttons
32. Build it yourself: a world at rest