For this project, you will design a simple game program, involving $($a$)$ the business objects that stores one or more characters in a list, $($b$)$ the database tier that can read and write the character data from$/$to the txt file, $($c$)$ the presentation tier to interact with users as partially shown below.

Please follow the three$-$tier architecture to design this program. Refer to Week $15$ for details.

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$$Requirement:

Submission requirement:

Group$-$based submission

Submit your codes on Canvas. You need to upload your three XX$.$py files. Please name your files with your two initials followed by game$\_$Objects, game$\_$DataBase, and game$\_$UI $($for example, XX$\_$game$\_$Objects.py$).$

Define functions as needed. Please add useful comments $($block comments or inline comments$)$ to improve code readability.$$

Your grade will be calculated based on the following $($total $100$ points$)$:

Running without error: $30$ pts

Your source codes MUST run successfully without error. There is no partial credit available here, either your codes work or they don$$t$.$

Execution: $40$ pts

Your program will be tested based on the test cases, as shown in presentation tier below. You can earn partial credit here if your program doesn$$t work for every single case or scenario.$$

Style: $30$ pts

Each program will also be graded on its style. This includes things like using functions and classes $(10$pts$),$ using meaningful variable names $(7\mathrm{.}5$ pts$),$ useful comments $(7\mathrm{.}5$ pts$),$ and proper indentation and spacing $(5$ pts$).$ All of these things make your code easy to read and maintain. Partial credit will be available here. As a minimum, your code should have a comment at the beginning with your group info and a high level but still descriptive overview of what the program does.

bUSINESS TIER

Implement the business objects $($Business tier$).$

$*$Note that for CharacterList class, feel free to modify or customize some methods $($e$.$g$.,$ getCharacter$()$ or getCharacterName$()$ methods$)$

DATABASE TIER

Implement the database tier $($Database$$tier$).$

Presentation tier

Implement the user interface and test it $($Presentation tier$).$

Write the code that implements the user interface $($XX$\_$game$\_$UI$.$py$).$ When you$$re done, it should look something like those shown in the test cases.

Make sure to upload $($if any$)$ and save your characters at the beginning and the end of the program respectively.

Test cases: Project$2\_$OOD$\_$Test$\_$Cases.pdf

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