Dalek’s Game

Table of Contents

• Description
• Technologies
• Implemented design patterns
• Technologies and design patterns usage examples
  • BehaviorSubject (RXJava)
  • Visitor
  • Command
  • IoC (Spring)
• How to run
• How to play
  • Game mode
  • Doctor movement
  • Power-ups

Description

Dalek’s Game is a Java project for Object-Oriented Technologies classes. The goal of the game is to survive and eliminate Daleks (who are the enemies) from the board. Each time the main character (Doctor) moves, every Dalek follows him. When a Dalek bumps into another Dalek or junk, it becomes junk. When there is no Dalek left on the map, Doctor wins.

Technologies

• Java 17
• RXJava
• JavaFX
• Spring
• SQLite
• JUnit

Implemented design patterns

• Visitor
• Command

Technologies and design patterns usage examples

BehaviorSubject (RXJava)

In our project we use BehaviorSubjects to automate some of the game processes.

In Engine class subscribe to the method onTeleportDeath.

this.subjectService.getDeadTeleportSubject().subscribe(this::onTeleportDeath);

Every time power-up is picked up, we call our Subject’s onNext and onTeleportDeath method is automatically called.

@Override
public void onPowerUpPickUp(){
   deadTeleportSubject.onNext(this);
}

private void onTeleportDeath(Teleport teleport){
   onPowerUpDeath(teleport);
   this.board.getDoctor().addTeleport(teleport);
}

Visitor

Visitor pattern is used to solve entities collision problem.

Command

PowerUp interface and PowerUpHistory implements Command pattern, which allows us to track the history of used power-ups.

IoC (Spring)

@Autowired
public GameInitializer(AppController appController,
                      Engine engine,
                      DoctorMoveController doctorMoveController) {
   this.appController = appController;
   this.engine = engine;
   this.doctorMoveController = doctorMoveController;
}

How to run

Clone the repository from github.

$ git clone https://github.com/ajablonsk1/daleks-game.git

Open project with IDE and run GameApplication class.

How to play

Game mode

At the beginning of the game you can choose game mode:

• Quick game
• Campaign

Doctor movement

Doctor can move in every direction by one step. You can control him by yourself using keyboards controls:

• Basic move directions (W,A,S,D)
• Diagonal movement (Q,E,Z,C) Alternatively Numpad can be used for player control.

Power-ups

When you collect a power-up, you can use it any time, by clicking:

• T - to use Teleport
• R - to use Time Reverse