Description
Purpose: To build a simple game in Mode 3 to further your
understanding of: inputs to the GBA, collision detection and
reaction, C basics, and drawing in Mode 3.
Instructions:
For this homework, you will recreate the game “Pong” in Mode 3. Review the Requirements
section on the succeeding page for an explicit list of what we expect as the base
requirements. The basic idea is as follows:
There are two different paddles on opposite sides of the screen that can be
controlled through user input. A ball moves around the screen and bounces
off of the paddles. If a player misses the ball, the opposing player gets a point.
The game ends when a player reaches 3 points, and that player wins!
To get an idea of what the gameplay should look like, watch this video:
https://www.youtube.com/watch?v=fiShX2pTz9A&ab_channel=andys-arcad
e. Of course your game is not expected to look exactly like the original pong
(it can if you’d like), but the basic gameplay should still be recreated.
CS 2261 Spring 2021
Moreover, you are encouraged to be creative! Go outside of the requirements to add some
flair to your game. You will receive a maximum of 95 out of 100 points for meeting all
of the base requirements. By adding your own flair, you may be awarded the 5
additional points needed to receive a 100.
Requirements:
Your game must have the following:
● Two paddles that can collide with the ball and move meaningfully through
intuitive user input controls (e.g. up/down & A/B)
○ If the ball collides with a paddle OR the top or bottom of the screen, it must
“bounce off” and change direction. Note: If you decide to change the
orientation of the paddles to be at the top and bottom of the screen, then
the ball should bounce off of the left and right sides of the screen
● If the ball is missed by a paddle and hits the edge of the screen, the opposing
player gets a point
● An end state
○ The game should end once any of the two players reaches 3 points
○ You do not have to have anything happen once you reach the end state, as
long as it can be understood that you have reached an end to the game
● A readme.txt file
○ An instruction manual (of sorts) that tells a player how to play your game
○ Include which buttons are used for controlling the paddles
● Only a minimal amount of flicker
Your code must have the following:
● Multiple .c files
● At least one .h file
● Good organization (see tips below)
● Meaningful comments
Flair (optional):
● Add “flair” to your game in order to receive up to an additional 5 points
○ Some ideas:
■ Add a tally to the screen to indicate how many points each player
currently has
■ Draw the ball as something other than a rectangle/square
CS 2261 Spring 2021
■ Change the end state so that it indicates which player won
Tips:
● Start early. Never underestimate how long it takes to make a game.
● For collision code, draw pictures. Graph paper is your friend!
● When splitting code between multiple files, put code that will be useful in
multiple games in myLib.c, and code specific to this game in main.c or other files.
Those other files should be specific to a concept (collision, etc.).
● Organize your code into functions specific to what that code does. Your main
method should not be very long. Use helper functions!
● Having update() and draw() functions that you call in main() is helpful.
● Make sure the order in which you call your functions takes into account waiting
for vBlank at the correct times. This will help you to minimize flicker.
● Build upon the myLib.c and myLib.h files we’ve provided in labs.
Submission Instructions:
Compress your entire project folder, including all source files, the Makefile, and
everything produced during compilation (including the .gba file) into a single .zip file.
Submit this .zip on Canvas. Name your submission HW02_FirstnameLastname, for
example: “HW02_TimmyTurner.zip”.
