Workshop › Pinball › Step 32 of 42

Three balls

What we are doing

A game has three balls. Each drained ball uses one; when none are left the state becomes 'over' and the physics stops.

```js
let state // 'ready' (in the lane), 'playing' or 'over'
let balls

  balls = 3

  if (state !== 'playing') return

  if (ball.y > canvas.height + R) {
    balls -= 1
    if (balls > 0) newBall()
    else {
      state = 'over'
    }
  }
```

What it means

reset gives three balls.
A drained ball takes one away; if any are left a new ball comes, otherwise the game is 'over'.
if (state !== 'playing') return after the ready block stops the physics when the game is over; without it the lost ball would keep falling and take away a ball every frame.

Your turn

Update the comment of let state; under let score write let balls.
In reset, under score = 0, write balls = 3.
In update, under the ready block's }, write if (state !== 'playing') return.
Replace the last line of update (the drained ball) with the new block.

Skills: Game states

← The flipper throws Balls left and game over →

All steps