Popka

Popka is a lightweight and beginner-friendly 2D game engine for the D programming language. It focuses on providing a simple foundation for building 2D games.

import popka;

bool gameLoop() {
    drawDebugText("Hello world!");
    return false;
}

void gameStart() {
    lockResolution(320, 180);
    updateWindow!gameLoop();
}

mixin callGameStart!(gameStart, 640, 360);

Warning

This is alpha software. Use it only if you are very cool.

Supported Platforms

• Windows
• Linux
• MacOS
• Web

Games Made With Popka

• A Short Metamorphosis

Dependencies

• Joka
• raylib

Installation

This guide shows how to install Popka and its dependencies using DUB. While DUB simplifies the process, Popka itself doesn't require DUB.

Create a new folder and run inside the following commands:

dub init -n
dub run popka:setup

The final line modifies the default app.d and dub.json files, downloads raylib, and creates the necessary folders for Popka to function properly. The following folders will be created:

• assets: This folder is used to store game assets.
• web: This folder is used for exporting to the web.

Once the installation is complete, run the following command:

dub run

If everything is set up correctly, a window will appear showing the message "Hello world!". To avoid downloading raylib, pass offline to the script.

Documentation

For an initial understanding, the examples folder can be a good starting point. For a more detailed overview, check the TOUR.md file.

Attributes and BetterC Support

This project offers support for some attributes (@safe, @nogc, nothrow) and aims for good compatibility with BetterC. If you encounter errors with BetterC, try using the -i flag.

Web Support

To export a game to the web, the game must be compatible with BetterC. The web folder contains a helper script to assist with the web export process.

dub run popka:web

raylib Bindings

Popka provides bindings for raylib that are compatible with BetterC and the web.

import popka.ray;

int main() {
    const int screenWidth = 800;
    const int screenHeight = 450;
    InitWindow(screenWidth, screenHeight, "raylib [core] example - basic window");
    SetTargetFPS(60);
    while (!WindowShouldClose()) {
        BeginDrawing();
        ClearBackground(RAYWHITE);
        DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
        EndDrawing();
    }
    CloseWindow();
    return 0;
}

Note

I add things to Popka when I need them.

License

The project is released under the terms of the MIT License. Please refer to the LICENSE file.