From 5fb3da5a77c7644ceb2fc68eb1ebac2728c33485 Mon Sep 17 00:00:00 2001
From: Ron Hale-Evans <rwhe@ludism.org>
Date: Thu, 14 Jul 2016 12:47:33 -0700
Subject: [PATCH] New Game topic

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 docs/reference/game/if-on-edge-bounce.md | 34 ++++++++++++++++++++++++
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 create mode 100644 docs/reference/game/if-on-edge-bounce.md

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+# 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)