Programming Alice Alice is named in honor of Lewis Carroll’s Alice in Wonderland

What is Programming? Writing complete instructions describing steps a computer should follow to carry out some task A program is written in a specific language such as C, Java, or Alice A computer system is used to execute a program

Alice Alice is an object-oriented programming language specifically designed to teach computer programming concepts Developed by Carnegie-Mellon Available as part of a freeware IDE

Getting Alice If necessary, download the Alice system On a Windows system, you will have to extract the Alice folder and create a shortcut to the Alice.exe file

Alice Environment Alice Virtual World A 3-D environment containing objects that are controlled via Alice programming instructions Virtual World Creation A Template forms the backdrop for each world Objects are added to the world Code is written to control the world

A New World Object Tree World Window Details Area Events Area Editor Area

Object Gallery A collection of pre-made classes for use in your virtual world Objects are built from the class template

Objects Instantiated from 3-D Models (class) Each has… height, width, and depth orientation (up, down, left, right, front, back) center (rotation point) position (relative to center of world) Height Width Depth Front Up Right Center

World Each world also has a center and orientation Green = Up Blue = Front Red = Right Object positions are relative to center of world distance

Point of View Position How far from world center to object along each axis (red/right, green/above, blue/forward) Orientation How much object is turned from the world's orientation

Properties Objects have properties The collection of property values represents the state of the object Animation occurs when we change an object's properties over time Proprties of the object named shakira

Scene Building Choose template Alice provides 6 basic templates Add objects from the gallery Local or Web Gallery Search or Browse Position and size objects to create the initial scene

Positioning Objects Select Object Bounding box and orientation axes are visible Object name is highlighted in the Object Tree Choose mouse interaction

Move Freely Drag to change red and green positions (object move in fixed horizontal plane) Shift+Drag to move object vertically Ctrl+Drag to turn left or right Shift+Ctrl+Drag to tumble about object's center

Move Specifically Specialized moves are also possible using the alternate buttons Move Freely Move Up/Down Turn Left/Right Turn Forward/Back Tumble Resize Copy

Resize and Copy When Resize is selected, the mouse will make the object larger or smaller As the object moves further from the camera, it will automatically appear smaller Unselect after copying!

Delete and Undo Right-click on the object in the Object Tree and choose Delete You can also right-click the object directly The Undo and Redo buttons are convenient when you mistakenly reposition an object You can reposition the World This is usually accidental

Quad View Used to see the world from four perspectives Normal 3-D view Top, Side, and Front views In addition to the usual controls, a re-position and zoom tool are included for the top, side, and front view windows

Quad View

Done Adding Objects Click the Done button to return to the Programming view of the world You can still reposition objects in this view The mouse acts as if in the Move Freely setting

Camera You can position the camera using the camera's driving tools below the World Window Turn camera to the left or right Turn forward (tip lens down) Drive Forward or Backward Turn backward (tip lens up) Raise or lower camera Slide camera left or right

Saving Worlds The Save World action is located in the File menu Pick a location (Z drive?) Place your projects in a dedicated folder Choose a name for your world Make it descriptive