Starting to Program From Scratch

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Starting to Program From Scratch
CS110 Intro to Computer Science
Core Issue Programming Concepts
Today we look at scratch, a new programming
language that lets you create your own
interactive stories, animations, games, music,
and art.
Supporting Issues Programming Logic Control and
Conditionals Game Design
Prepared by Fred Annexstein University of
Cincinnati Some rights reserved 007
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Beginning Programming
Download Scratch from http//scratch.mit.edu You
may want to use the .zip archive saved to dir
\temp rather than the installer.
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Varieties of Computer Languages
Interpreted lt!DOCTYPE html PUBLIC "-//W3C//DTD
XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitio
nal.dtd"gt lthtmlgt ltheadgt lttitlegtHello,
World!lt/titlegt lt/headgt ltbodygt Hello, World!
lt/bodygt lt/htmlgt
Compiled int main(int argc, char argv)
printf("Hello world!") exit(0) 10000011
00000001 00010001 00000000 00111101 11111100
01110100 00111101 00000000 01000000 00000000
00000000 00000000 00000000 00000000 00000000
10010000 00000000 00000000 00000000 01010000
00000000 00000111 00110000 00001011 00000001
00001011 00000011 00001010 00000000 00000000 00
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Getting Started in Scratch Interpreted Environment
8 Categories of Programming Objects Use Help
Screens to Find what you need http//llk.media.mit
.edu/projects/scratch/help/ Find Conditionals
and Boolean Expressions Find Loops
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Game Programming Knock the Kitty in Hole

• Basic Design
• Start the game with 0 score and define its
  duration (10 seconds)
• Pick random location at top to drop the Kitty
• Use a touching mouse? sensing event to grab kitty
  (broadcast event), and if mouse released continue
  to kitty drop.
• Use a touching hole? sensing event to test if
  kitty is in hole and add to score. Then go back
  to step 2 to drop another kitty.

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Game Programming Knock the Kitty in Can
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• Project to turn in
• Modify the Game above to include another sprite
  into the action.
• Turn in your project by saving the scratch
  program and uploading to Bb.
• Final Homework project Due Thursday Nov 29.
• Create your own game or story animation in
  Scratch.