CIS110203 Intro to Computer Science Graphics Project

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CIS110-203Intro to Computer Science Graphics
Project

• TA Catherine Stocker
• University of Pennsylvania
• 5 December 2007

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Todays Agenda

• Jar Files
• Questions

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JAR Files

• Why JAR files?
• Like a zip file keeps all these files together
  and compresses them too!
• So mom and dad can run it
• They just have to install the jdk (like you did
  at the beginning of the semester).
• You send it. They download, double click and
  play Pong!

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JAR Files

• Put all .java and .class files into one directory
  (folder). Make sure everything is saved and
  compiled.
• Create a file manifest.txt in a text editor
• Windows notepad
• Mac terminal?vim or emacs or download
  Smultron
• Linux KWrite

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JAR Files

• Copy (change mainClassName to the name of
  whatever class has your main method)
• Manifest-Version 1.0
• Main-Class mainClassName
• dont forget to put a colon between
  Manifest-Version and 1.0 its missing in the
  write-up

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JAR Files

• Open a terminal/command prompt window and find
  the directory you have all the files in. Use two
  commands to get there
• To change to a new directory cd directoryName
• --gets you to directoryName if thats within
  your current directory.
• To see the contents of the directory youre
  currently in
• Windows dir
• Mac Linux ls lists whats in the
  directory youre in --Helpful for navigating
• SUGGESTION Move the folder to the Desktop for
  now, its easy to find there.

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JAR Files

• Execute the following command
• jar cvfm gameName.jar manifest.txt .java
  .class
• --gameName.jar is the jar file youre creating
• --manifest is the file that you just created,
  tells it where the main method is (if your
  manifest file has no extension then just type
  manifest (no .txt), if it has a txt extension use
  manifest.txt)
• --.java .class means you want to include all
  .java and .class files in the current directory
• Beware Where does your jar.exe file live? It
  was part of the jdk you downloaded at the
  beginning of the semester. If youre getting an
  error about a jar command not being found, you
  must find jar.exe and add it to your path or type
  its full pathname

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JAR Files

• Run your code java -jar gameName.jar
• Do this today in lab! Make sure you know how to
  do it. Its not worth turning your homework in
  late over.
• If youre going to turn in your work from a
  non-lab computer, do it tonight on that
  computer!!!

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To Do

• Window, draw circle, get mouse input
• All of this requires 4 extra lines added to
  code supplied in the first graphics lecture
• Timer
• From the last lecture
• JAR File
• Try today!
• Collision Detection and Response
• This is the tricky part, start now!!
• Game
• The fun part