Reversi

An extended version of the classic Reversi (Othello) board game, implemented in Java with a graphical user interface (GUI), special disc types and AI opponents.
Originally developed as part of an Object-Oriented Programming university project.

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Quick Start

📥 Download the JAR file

Simply download and run the JAR to start playing!

java -jar Reversi.jar

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Overview

Reversi is a strategy board game played on an 8×8 grid.
The goal is to finish the game with the majority of discs in your color.

This version introduces:

• Special disc types with unique behaviors.
• AI players with different strategies.
• Undo and Reset functionality.

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Game Rules

Objective

Finish the game with the highest number of discs in your color.

Starting Position

• The game starts with 4 discs in the center of the board:
  • Player 1 (Blue) – positions (3,3) and (4,4)
  • Player 2 (Red) – positions (3,4) and (4,3)

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Disc Types

1. ⬤ Simple Disc

   • Standard Reversi disc.
   • Flips according to standard rules.

2. ⭕ Unflippable Disc

   • Cannot be flipped after being placed.
   • Any opponent discs in the same line are flipped, but this disc remains.

3. 💣 Bomb Disc

   • When flipped, all adjacent discs (including diagonals) are flipped.
   • May trigger chain reactions with other bomb discs.
   • Cannot flip an Unflippable Disc.

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Game Flow

• Players take turns placing a disc of their color on an empty square.
• The move must flip at least one opponent disc.
• Discs are flipped if they lie in a straight line (horizontal, vertical, diagonal) between the new disc and another disc of the current player's color.
• The game ends when no legal moves are available for either player.
• The player with the most discs wins.

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Undo & Reset

• Undo:
  • Available only in a 2-human-player game (no AI).
  • Can undo multiple moves back to the initial position.
• Reset:
  • Restarts the game while keeping the win counters.

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AI Players

• RandomAI – Chooses a random legal move.
• GreedyAI – Chooses the move that flips the most opponent discs.
  Tie-breaking: rightmost position, then bottommost.

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GUI

The game uses a provided ReversiGUI framework:

• Displays the board and discs.
• Allows placing discs by clicking on squares.
• Shows messages for moves, flips, undos, and the winner.

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Project Structure

src/
  AIPlayer.java
  BombDisc.java
  Disc.java
  GameLogic.java
  GreedyAI.java
  HumanPlayer.java
  Main.java
  Move.java
  PlayableLogic.java
  Player.java
  Position.java
  RandomAI.java
  ReversiGUI.java
  SimpleDisc.java
  UnflippableDisc.java