Quack Attack!
the saga begins
A game by Ryan Sullivan
Overview
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Why make a game
Storyline
Design
Problems
Screenshots
Why Make a Game?
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Something I’ve always wanted to do
More fun than previous projects
Graphics programming
Uses concepts learned in CS courses
Storyline
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Background
– You are a duck
– Your parents lived in a small country
pond
– They were killed by a cougar just before
you were hatched
– You don’t know what happened to them
Storyline
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Game entrance
– You enter game as a newly hatched
duckling
– You know nothing about your parents
death
– You are alone in the pond
Storyline
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Pass various levels (only two in “The
saga begins…”) to gain clues about
what happened to your parents
In “Revenge of the Duck” (not part of
this project) you actually confront the
evil cougar
Design
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Data Structures/Algorithms
– Tree
– Disjoint Sets
– Collision Detection
– Game mode
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SimpEngine
– Simple Graphics Engine
– It’s pretty much most of my class design
Tree Data Structure
Disjoint Sets
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Used to generate a maze
Every maze cell is it’s own set
Disjoint Sets randomly selects cells
and checks if they’re in the same set
If not, it combines both sets
Keeps going till all cells are in one set
Bounding Box Collision Detection
Game Mode
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Big If Statement
There’s several modes, including…
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Main Menu
Load Level 1
Level 1 instructions
Playing Level One
Easy to add new modes
This allows me to turn off key/moue input
based on game mode
This controls what is drawn
Game Mode Input
Game Mode Input - Playing
Game Mode Draw
SimpEngine Layout
Tree picture (again)
Problems
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SimpEngine a blessing and a curse
– Almost no documentation
– No “how to do this”
– I’d spend lots of time trying to do
something, then realize there’s a much
easier way
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Phantom Errors
Time – ROTC
Senioritis
Summary
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Why make a game
Storyline
Design
Problems
Screenshots