The document discusses using PGraphics objects as image layers or off-screen buffers for collision detection based on distance vs. color. It recommends tackling problems one object at a time by defining its data, methods, and constructor through pseudo-coding before writing real code. A demo refactors Pong and adds reset, pause, and countdown game methods. The next steps are to read about algorithms, debugging, and libraries and decide plans for Friday.

1. From last time…
•
Using the PGraphics object as image layers or
off-screen image buffers!
•
Collision detection based on distance vs.
color–using an off-screen image buffer!
•
Iteration 1 graded and returned via email

2. Algorithms I
CAP

3. Pseudo-coding
1. Tackle one object at a time!
2. Decide what it needs to know (its data), what it
needs to do (its methods), and how it needs to
be built initially (its constructor)!
3. Write pseudo-code first, then translate it into
real code in small chunks

4. Demo!
Refactoring Pong

5. Demo!
Add Game Methods
1. Reset!
2. Pause!
3. Count Down

6. For next time…
•
Read Shiffman, p. 178–198
(Algorithms II, Debugging, & Libraries)!
•
Decide what to do about Friday…