OOD / Game• Patterns: Singleton

Snake & Ladder

Medium

Problem Summary

Design a modular Snake and Ladder board game supporting multiple players and custom board dimensions.

Functional Scope

Board contains Snakes and Ladders at randomized positions.
Process turns iteratively using a dice (1-6 rolls).
Winning condition: Player lands exactly on slot 100.

Entity-Relationship (ER) Schema

Game [1] <---> [1] Board
Game [1] <---> [*] Player
Board [1] <---> [100] BoardCell
BoardCell [1] <---> [0..1] Jump (Snake/Ladder)

Design Approach

Use a Queue to manage player turn sequences. Model snakes and ladders as jumping destinations on BoardCell nodes to keep board rendering and trajectory computation decoupled.

Core Classes & Models

Board (Grid of BoardCells)BoardCell (Contains optional Snake or Ladder pointer)Player (Tracks current index position)Dice (Generates random values in [1, 6])Game (Engine loop routing turns)

Code Blueprint

public class BoardCell {
    private int destination;
    public int getDestination() { return destination; }
}