Workshop › Flappy-style Bird › Step 3 of 30

Draw the bird

What we are doing

The bird is a gold circle. We keep what we know about it (where it is, how big it is) in one object, bird, and draw the circle from that object.

```js
let bird = { x: 100, y: 300, r: 14 }

ctx.fillStyle = 'gold'
ctx.beginPath()
ctx.arc(bird.x, bird.y, bird.r, 0, Math.PI * 2)
ctx.fill()
```

What it means

• { x: 100, y: 300, r: 14 } is an object: named values in one package. r is the radius.
• let makes a variable whose value can change later: the bird will move.
• Canvas has no "fill a circle" command. beginPath starts a new shape, arc describes a full circle around (bird.x, bird.y), fill paints it.
• Angles are in radians: a full turn is Math.PI * 2, not 360.

Your turn

1. Under const ctx = ..., leave an empty line and write the bird line.
2. At the very end, leave an empty line and write the four circle lines. Press Run.

Skills: Drawing on a canvas, Game states

← Paint the sky A function that draws →

All steps

1. Get the canvas and the pen
2. Paint the sky
3. Draw the bird
4. A function that draws
5. A function that moves
6. The game loop
7. Gravity
8. A flap
9. Space, Up arrow or a tap
10. Wait for the first flap
11. The ground and the sky
12. Tell the player
13. A pipe as data
14. Draw the pipes
15. The world moves, not the bird
16. A new pipe at a random height
17. A pipe every 90 frames
18. Remove the pipes you passed
19. Is the bird level with a pipe?
20. Through the opening
21. Score each pipe once
22. Show the score
23. A function for a fresh start
24. Try again
25. One place where the game ends
26. Remember the best score
27. Show the best score
28. The same speed on every screen
29. No catching up after a pause
30. Build it yourself: a medal