1. CS110: Intro to Computer Science Starting to Program From Scratch Core Issue Programming Concepts scratch is a new programming language that lets you create your own interactive stories, animations, games, music, and art. Supporting Issues Programming Logic Prepared by Fred Annexstein University of Cincinnati Some rights reserved 007

2. Beginning Programming • Download Scratch! from scratch.mit.edu

3. Varieties of Computer Languages Interpreted <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd"> <html> <head> <title>Hello, World!</title> </head> <body> Hello, World! </body> </html> 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

4. The Scratch Interpreted Environment 8 Categories of Programming Objects

5. Scratch Programming Elements Looks: Control: Sound:

7. Boolean Expressions and Boolean connectives Sensing: Numbers:

8. Conditionals: If then else statements:

9. Basic Repetition: Loops

10. Using Program Variables

11. Programming the Movement of a Sprite

12. Programming the Movement Multiple Sprites: Threads

13. Programming Events

14. Game Programming: “Knock the Kitty in Hole” Basic Design: Start the game with 0 score and pick random location at top to drop the Kitty Use a touching mouse? sensing event to grab kitty and knock into hole. Use a touching hole? sensing event to add to score and drop another kitty.

15. Game Programming: “Knock the Kitty in Can”

16. 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.