comp3021 Corona Spring2021

Implementing Java Polymorphism, Inheritance, exception raising and handling. We aim to develop a system as a game to fight Coronavirus, COVID 19'.

Class Diagram of the main packages

The system contains primarly three packages: containment, roles and exception. The util package has utility classes.

Roles and containment techniques and Game engine

Exceptions raised and handled

##Game input The game takes as input the file players.txt. The txt file specifies two players' info. The player's info, the city, and the roles as follows: line 3: Player's name, budget, tourism income, initial points line 4: city ID, city name, population, active cases, recovered cases line 5,6,7 specify the roles: HealthMinister, ChiefExecutive, and Epidemiologist. Each line specifies the rating (1..5) of each role as leadership, medicine, and experience in that role.

Line 9,10,11,12 specify the input information for the second player.

How does the game end?

There are 3 winning and losing conditions that end the game:

1. The player loses the game in the following conditions:

• When the city/country under a player’s control has infected cases = population. The game engine raises MedicalException.
• The player runs out of budget.
• The game engine raises NoMoreBudgetException.

2. The player wins the game

When the city/country under a player’s control has 0 active cases and 0 new infected cases. If the two players have 0 active cases and 0 new infected, the game engine computes the points of each player and decides the winner based on the one with greater points.

Once the system witnesses losing or winning conditions, it announces the winner according to active cases and/or new infected cases and/or players points.

Disasters

we can have 3 disasters that would affect the three levels: Protection_level, Vaccination_level, medical_level. We need to generate a random variable (calls disaster type) which decides what is the nature of this disaster. We also need another random variable that determines the propability of disaster occurance.

Utimately, we have three disaster types that happen with a propability < 0.4:

• Disaster1: Fake face masks that halves the protection
• Disaster2: Weather/physical changes that halves the vaccination efficiency
• Disaster3: Medication facility is out of service