1. Building a Game in Scratch
Module 4 Lesson 1
Get out your notes!!

2. To learn about the process of project design.
Learning Objectives
To learn about the process of project design.
To be introduced to conditional statements in Scratch.

3. Outline for the day You will make a game today
First we will look at Game Design.
Once the game is designed we will implement the game in Scratch

4. Design a Game: “Run Away”
When you start a programming project it is a good idea to brainstorm away from the computer.
We will start with a simple game.
It has 2 characters and a background.
Answer the following to help generate ideas about your game.
Complete the following before you get working in Scratch.

5. Design a Game Description of your Good Guy character
Description of your Bad Guy character
Description of the Background you would like to use for your game.

6. Design a Game: Controls
Key Used
Movement
Up Arrow
Move Up
Down Arrow
Move Down
Left Arrow
Move Left
Right Arrow
Move Right
Space Bar

7. Design a Game: Game Play
Game Feature
Working?
Bad Guy moves randomly so the Good Guy can’t guess where he is going
The Good Guy starts with 5 lives (Later Lessons)
If the Good Guy is touching the Bad Guy then the Good Guy loses a life. (Later)
If the Good Guys lives become equal to zero the game stops and a Game Over background appears (Later)
When the Game restarts the background is reset and the lives are initialized back to 5. (Later)

8. Design a Game: Improvements
Enter improvements for your game.

10. Building the Game Open Scratch and remove the Cat
Add your two characters. (Good Guy/ Bad Guy)
Add your background
Program the Good Guy’s movements
Select him
Add scripts for right arrow (Change x by 10), left arrow (Change x by -10), up arrow (Change y by 10), down arrow (Change y by -10).

11. Sample Good Guy Code

12. Program the Bad-Guy Sample description of motion
He will be moving forever (Forever loop)
Change x by (Pick random -20 to 20)
Wait 0.2 sec
Change y by (Pick random -20 to 20)
Wait 0.1 sec
Turn (pick random -90 to 90)
If on edge, bounce
Test it. Does the bad guy move around randomly?
Modify as needed to get the motion you would like.

13. Refine these values to improve the Bad Guy’s movements.
Sample Bad Guy Code
Refine these values to improve the Bad Guy’s movements.

14. Ouch!!! Getting the Good Guy to react to bumping into the bad guy.
This will need to be checked forever. (Loop)
Say Ouch
Change the character (fisheye, you can pick another effect)
Test

15. Possible Good Guy Code

16. Extensions
Enhance the Good Guy functionality by including a costume change when moving in different directions
Add special movement keys for the Good Guy. A jump, …
Alter the speed and motion of the Bad Guy to make it more realistic.
Turn in the current version of your game
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