Lab 8: Popping Balloons
Intro
You’ll work in this lab with your assigned partner. Help each other get up and running with IntelliJ and Java (Lab 4: Same Story, More Syntax). The two of you will work as a team to solve problems. At any time, one of you will be the Head and the other will be the Hands. The Head does the thinking and the Hands does the typing. Hands type only what the Head tells them to, but you’re free to discuss any issues that pop up. We’ll have you switch off during the lab to make sure each of you get practice problem solving, dealing with syntax, and getting finger exercises on the keyboard.
1 Lab Skeleton
You must start this lab with this project skeleton. Unzip the file into your IdeaProjects directory and open it with IntelliJ to get started.
We’ll be using the JavaLib image and world library again in this lab; it’s all set up in the project skeleton. See the documentation for details about available classes/methods.
2 Popping Balloons
Our goal in this lab is to modify the program we wrote in the last lab.
Don’t worry if you haven’t finished last Wednesday’s lab, we provided a baseline skeleton program.
This time,
instead of a blank screen, 99 red balloons will start on the screen (change BallWorld() constructor),
instead of the balls flying off the screen, you must modify the world so that they bounce off the walls (change Ball.next(), remove Ball.outside()),
instead of mouse clicks adding balls, mouse clicks should remove all the balls that fall within the click (add public ListOfBall removeClicked(Posn mouse), change BallWorld.onMouseClicked(...) & ListOfBall.next()).
For those starting with your code from last week, focus your effort on the sections mentioned above. For everyone else, the lab skeleton gives you an outline of the tasks you need to complete to get this program up and running. Go get started!