pxt-calliope/docs/reference/game/if-on-edge-bounce.md

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2016-07-14 21:47:33 +02:00
# If On Edge, Bounce
Make a [sprite](/reference/game/create-sprite) on the edge of the
[LED screen](/device/screen) bounce away.
```sig
let item = game.createSprite(0, 2);
item.ifOnEdgeBounce();
```
### Parameters
* a **sprite** that might be on the edge of the LED screen.
### Example
This program makes a sprite on the right edge of the screen with a
direction of 90 degrees, and bounces it so it has a direction of -90
degrees -- exactly the opposite direction.
```blocks
let ball = game.createSprite(4, 2);
basic.showNumber(ball.get(LedSpriteProperty.Direction));
input.onButtonPressed(Button.B, () => {
ball.ifOnEdgeBounce();
basic.showNumber(ball.get(LedSpriteProperty.Direction));
});
```
### See also
[create sprite](/reference/game/create-sprite),
[touching](/reference/game/touching),
[touching edge](/reference/game/touching-edge)