# Use Global Variable to Interact with Sprites

**Programming result**

When you rotate HaloCode around the y-axis, the sun on stage will rotate as well.

**Introduction to HaloCode's Axes**

The axes of HaloCode are as follows:

![](https://2169521322-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpakronics-education%2F-Lpg0r0jyU3XQdgAmqp8%2F-LpgAGxhEgyiKrMmad7z%2F0.png?generation=1569477960038870\&alt=media)

**Create a new variable**

1\. Click Variables category, and then click "Make a Variable". Name the variable "y".

![](https://2169521322-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpakronics-education%2F-Lpg0r0jyU3XQdgAmqp8%2F-LpgAGxirJ31YTyx-fQ6%2F1.gif?generation=1569477960022403\&alt=media)

2\. Add a Variables block set (y) to () and a Sensing block rotation angle around (). Choose "Y" axis.

![](https://2169521322-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpakronics-education%2F-Lpg0r0jyU3XQdgAmqp8%2F-LpgAGxj2zM9rLn7-kw2%2F2.gif?generation=1569477960053580\&alt=media)

**Add event and control**

3\. Add an Events block when button is pressed and a Control block forever.

![](https://2169521322-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpakronics-education%2F-Lpg0r0jyU3XQdgAmqp8%2F-LpgAGxkOeRiZf3bnAqF%2F3.gif?generation=1569477960028966\&alt=media)

**Add a sprite**

4\. Under "Sprites", click "+". Choose "Sun1".

![](https://2169521322-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpakronics-education%2F-Lpg0r0jyU3XQdgAmqp8%2F-LpgAGxl1RDwHAK5acAo%2F4.gif?generation=1569477960070455\&alt=media)

5\. Delete default sprite "Panda".

![](https://2169521322-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpakronics-education%2F-Lpg0r0jyU3XQdgAmqp8%2F-LpgAGxmm3nK7R3pUCXW%2F5.gif?generation=1569477960079238\&alt=media)

**Program the sun**

6\. Add a Motion block turn ↷ () degrees and a Variables block y.

![](https://2169521322-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpakronics-education%2F-Lpg0r0jyU3XQdgAmqp8%2F-LpgAGxnmhG8DS6R2Ncj%2F6.gif?generation=1569477960089907\&alt=media)

7\. Add an Events block when green flag clicked and a Control block forever.

![](https://2169521322-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpakronics-education%2F-Lpg0r0jyU3XQdgAmqp8%2F-LpgAGxouJZP9ZnBhznW%2F7.gif?generation=1569477960073116\&alt=media)

8\. Rotate HaloCode and see what happens.


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