2.1.28, initiation update to PXT v5.28.24 (#54)

docs/reference/game/is-touching.md

@@ -0,0 +1,39 @@
+# Touching
+
+Find whether the sprite is touching another sprite you say.
+
+Sprites are touching if they share the same LED.
+
+```sig
+game.createSprite(0, 2).isTouching(null);
+```
+
+## Parameters
+
+* another **sprite** that might be touching the one you are checking.
+
+## Returns
+
+* `true` if the two sprites are touching.
+
+## Example
+
+This program creates two sprites called ``matter`` and ``antimatter``,
+and then checks whether they are touching.  If they are, there is an
+explosion.
+
+```blocks
+let matter = game.createSprite(2, 2);
+let antimatter = game.createSprite(2, 2);
+if (matter.isTouching(antimatter)) {
+    basic.pause(500);
+    basic.clearScreen();
+    basic.showString("BOOM!");
+}
+```
+
+## See also
+
+[create sprite](/reference/game/create-sprite),
+[is touching edge](/reference/game/is-touching-edge),
+[if on edge, bounce](/reference/game/if-on-edge-bounce)