CIS 3100 Introduction to Programming Using Virtual Reality

The undo and redo buttons near the top left corner of

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appears, but this does not work with Alice objects. The Undo and Redo buttons near the top left corner of the interface are also useful for editing an Alice world. You can undo the last change you made by clicking on the Undo button. The effects of the Undo button can be reversed by using the Redo button. Alice can remember the last several dozen changes that you made. The Ctrl-Z and Ctrl-Y shortcut keys can also be used for Undo and Redo, although there are no shortcut keys for cut, copy and paste. Alice Menus The Alice Interface has a menu bar at the top of the screen with four menus: File, Edit, Tools, and Help. The menus are used far less in Alice than in many other computer programs. For now, you will look at only a few of the items on these menus. All of the features on the Alice menus are listed in Appendix B. File Menu The Alice file menu has commands opening, closing and saving Alice worlds, as well as options to export an Alice world as a movie file or as an HTML Web page. You will use these options in later tutorials throughout this book.
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Alice – Chapter 1 DRAFT June 10, 2013 pg. 16 of 38 Edit Menu Currently the only option on the Alice Edit menu is Preferences , which is used to change settings for the Alice software. Appendix B of this book lists and describes these settings. The most important thing to know for now is that the Alice edit menu is not used to edit Alice methods in the same way that the edit menu can be used to edit things like documents in Microsoft Word. Instead, Alice emphasizes the use of a “drop and drag” interface, which uses the editing icons and buttons described above. Tools Menu The Alice Tools menu contains three options – World Statistics , Text Output , and Error Console . The Text Output option allows you to see system messages generated as you play Alice worlds, and the Error Console can be used to look at detailed Alice error messages. Both of these are rather sophisticated, and are not very useful for novice programmers. The World Statistics allows you to see statistics such as the number of objects in a world, the time the world has been open, and many other useful items. Only some of the information here will until you learn more about Alice and computer graphics. Help Menu The Help menu does not contain an option to look up the features of Alice as you might expect. By not providing a way to look up features, the developers of Alice were hoping to encourage people to learn about Alice by experimenting with it. The Help menu does have three options: Tutorials, Example Worlds, and About Alice. Example Worlds and Tutorials will both take you back to the Welcome to Alice! dialog box . The About Alice option will give you general information about the development of Alice and has a link to the Alice Web site , where you can find out more about Alice.
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Alice – Chapter 1 DRAFT June 10, 2013 pg. 17 of 38 NOTE: From time to time you may encounter errors while using the Alice software. The Alice error message box contains a button to submit a bug report to the Alice development team in the Human Computer Interaction Lab at Carnegie Mellon University. Reporting errors will help to
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