Introduction to Programming
G50PRO
University of Nottingham
Unit 3 : Introduction To Scratch 2
Paul Tennent
http://paultennent.wordpress.com/G50PRO.html
[email protected]
Room C41
Agenda





Common programming elements
Pseudo Code
Scratch Example
Scratch Demo
Course work
Common programming
elements:
 Variables
 Conditional
 Loops
 Events
statements
PseudoCode





PseudoCode is a compact and informal
high-level description of a computer program
Uses the structural conventions of a
programming language
Intended for human reading rather than
machine reading
Compact and easier to understand fo
humans
Language-independent
Example

Cat Sprite()

Loop Forever

If (user hits right)


If (user hits left)


Point Up
If (user hits down)


Point Left
If (user hits up)


Point right
Point Down
Move slowly
Try PseudoCode

Write PseudoCode to:



Move a car using up arrow to increase speed and
down arrow to brake. Right and left arrows for
directions.
If a wall is hit the car explodes and the car losses
1 life out of 3
Game is over if the car explodes 3 times
Who is responsible for what?

Structure your programs

Think – which sprites should be responsible
for what actions?

Think – Where should your variables be
defined
Example – Shooting Game
Bullet
Add to user’s score?
Alien
-Disappear
-Destruction effect
COLLISION!
Coursework




2 player car race online game
The game should offer a choice of multiple
tracks.
When a player reaches the finish line the
winner should be announced plus the time
taken and a score.
Read the specifications on course web page
Coursework




Check Similar projects online first
It is ok to reuse bits of code/ideas from other
projects. Yet DO NOT copy a project and
modify it.
Make sure to include in the Report references
to other projects you used in your work on
Use Project notes to include simple user
Instructions
Quick Review

Create the software




Design
Implement
Test
Write the documentation



Leave plenty of time to write the report
Proof read for obvious mistakes
Think about the structure of your writing
Software Demonstration

Wednesday 18th February

Make sure The game is usable online (clear
instructions)

How does it look, feel?