Workshop › Battleship › Step 16 of 35

Sinking ships

What we are doing

A ship sinks when every one of its squares has been hit. Each ship counts its hits; fire says 'sunk' when a hit sinks it, and the message tells you.

```js
let enemyFleet // ships: { cells: [[r, c], ...], hits }

      return { cells, hits: 0 }

const sunk = (ship) => ship.hits === ship.cells.length

  ship.hits += 1
  return sunk(ship) ? 'sunk' : 'hit'

  message = result === 'miss' ? 'Miss' : result === 'hit' ? 'Hit!' : 'You sank a ship!'
```

What it means

Every ship starts with hits: 0; each hit adds 1.
sunk(ship) is true when the hits equal the ship's length.
fire now returns 'miss', 'hit' or 'sunk', and the message has three cases.

Your turn

Add , hits to the let enemyFleet comment and , hits: 0 to the ship placeFleet returns.
Under shipAt, write sunk.
In fire, change the end as shown.
In playerShoots, change the message line.

Skills: Game states

← See your own fleet Darker hits on a sunk ship →

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