Carleton College CS 107, Explorations in Computer Science

Assignment:

Work through Laboratory 8, and turn in Exercises 1, 2, and 3 (see below for Exercise 3). Make sure that you run Palgo as a standalone Java application, instead of an applet. This will give you the ability to save your code. To do this, you can use the CD-ROM, or I have stored the Palgo program on the network.

To access Palgo from the network:

Double click on "My Computer".
Double click on the "Collab" drive, then double click on the following folders in sequence: Courses \ cs \ cs107-0-f03 \ Course Materials \ APPLICATIONS \ PALGO .
Double click on the program called "run_application.bat".

Alternatively, to access Palgo from the CD:

Navigate to the folder APPLICATIONS \ PALGO, and double click on the program called "run_application.bat".

Exercise 3

Let's do some animation. Create a Palgo program from scratch that creates a red square that slides horizontally across the screen. To do this:

draw a red square in the center of the left hand side
wait a short while (e.g. wait 500)
"erase" the red square by drawing a white square directly on top of the red square
draw a new red square one position to the right of the old one
...and repeat as many times as necessary.

For this exercise, don't turn in a screenshot. Instread, you should turn in your assignment electronically so that we can test it out. To do so, save your program in Palgo by clicking on the Save button. Then using My Computer, copy your program to the folder Collab\Courses\cs\cs107-0-f03\Student Work\yourname\hand-in .

If you're having fun, keep going. Create a cartoon of your own design. Turn in your Palgo code and we'll show the best ones to the class.