DPR Kingdom

Overview

DPR Kingdom is a turn-based command-line simulation organized around a small economy. The game models a Mayor, Farmers, and Cattlemen, with plants, animals, products, shops, storage, and buildings representing the resources and places those roles interact with. The Mayor can collect taxes from the farmer and cattleman groups, add players, and construct buildings.

Game loop and object model

The entry point reads configuration, loads or initializes the game state, advances turns, and accepts player commands until an exit or win condition is reached. Game state is kept by a Game object, while domain classes separate shared player behavior from role-specific operations. For example, Mayor derives from Player and supplies its own buying, selling, and score-calculation methods.

Read configuration -> Load or initialize state -> Advance turn
                              ^                         |
                              |                         v
                         Check outcome <- Process player commands

The simulation also uses C++ features such as inheritance, virtual methods, operator overloading, and domain-specific exceptions. Organizing the rules into related classes made it easier to reason about how player actions affect resources and the wider game state.

What I learned

This was an exercise in turning a set of game rules into a maintainable object model rather than placing all behavior in the command loop. It strengthened my understanding of class responsibilities, polymorphism, and the coordination required by a stateful turn-based program.

Class diagram for DPR Kingdom.

Cover image source: Kingdom background photos by Vecteezy