Workshop › Frogger-style Crossing › Step 8 of 22

Traffic moves

What we are doing

Every frame each lane slides by its speed. Because items wraps around the period, cars leaving one side come back on the other, forever.

```js
function update() {
  for (const lane of LANES) lane.offset += lane.speed
}

  update()
```

What it means

Adding the speed to offset every frame moves every car of the lane together.

Your turn

Above rowColor, write update.
In loop, call update() before draw().

Skills: The game loop

← Cars Hit by a car →

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