Workshop › Missile Command-style Defense › Step 24 of 35

Limited ammo

What we are doing

With unlimited interceptors you could fill the sky with explosions. With limited ammo, every shot is a choice.

```js
let ammo

  ammo = 14

  if (ammo === 0 || ty > BASE.y - 10) return
  ammo -= 1
```

What it means

• ammo starts at 14.
• fire does nothing with no ammo left (|| means "or"); otherwise each shot uses one.

Your turn

1. Above let score write let ammo.
2. In reset, under launchIn = 30, write ammo = 14.
3. In fire, change the first line and write ammo -= 1 under it.

Skills: Game states

← Show the score Waves →

All steps

1. Six cities to protect
2. Your missile base
3. Draw again and again
4. Cities that can fall
5. Rubble
6. Move towards a point
7. Launch an enemy missile
8. One missile a second
9. Missiles on their way
10. Smoke trails
11. Impact
12. Fire an interceptor
13. Click the sky
14. Interceptors fly
15. An explosion that grows and shrinks
16. Explode on arrival
17. Draw the explosions
18. Impacts explode too
19. Caught in the blast
20. Chain reactions
21. Only your explosions count
22. Points for every missile
23. Show the score
24. Limited ammo
25. Waves
26. Each wave is harder
27. The end of a wave
28. The end
29. Play again
30. Wave, ammo and messages
31. Launch from anywhere
32. Some missiles will split
33. Split into three
34. A high score
35. Build it yourself: a crosshair