FastDoom achieves its speed primarily through optimizing data access patterns. The original Doom wastes cycles retrieving small pieces of data scattered throughout memory. FastDoom restructures data, grouping related elements together (like vertices for a single wall) for contiguous access. This significantly reduces cache misses, allowing the CPU to fetch the necessary information much faster. Further optimizations include precalculating commonly used values, eliminating redundant calculations, and streamlining inner loops, ultimately leading to a dramatic performance boost even on modern hardware.
OpenJKDF2 is a cross-platform, open-source reimplementation of the Jedi Knight II: Jedi Outcast and Jedi Academy game engine written in C. It aims to be a clean and modern engine while maintaining compatibility with the original games' content, supporting both single-player and multiplayer modes. The project prioritizes features like improved rendering, physics, and networking, allowing for modifications and enhancements beyond what was possible with the original engine. It's designed to be portable and has been tested on Windows, macOS, and Linux.
Hacker News users discuss OpenJKDF2's potential benefits, including cross-platform compatibility and potential performance improvements over the original Jedi Knight II: Jedi Outcast game engine. Some express excitement about potential modding opportunities and the project's clean codebase, making it easier to understand and contribute to. Others question the practical benefits, wondering if the performance gains are substantial enough to warrant a full reimplementation. The use of CMake is praised, while concerns are raised about the licensing implications of incorporating assets from the original game. One commenter points out potential issues with online multiplayer due to timing differences, which are hard to replicate perfectly.
Ren'Py is a free and open-source engine designed for creating visual novels, a genre of interactive storytelling that blends text, images, and sound. It simplifies development with a Python-based scripting language, allowing creators to easily manage dialogue, branching narratives, and character interactions. Ren'Py supports a wide range of features including animated sprites, movie playback, and various transition effects, making it accessible to both novice and experienced developers. It’s cross-platform, meaning games created with Ren'Py can be deployed on Windows, macOS, Linux, Android, iOS, and web browsers, reaching a broad audience. The engine prioritizes ease of use and provides comprehensive documentation and a supportive community, enabling creators to focus on crafting compelling stories.
Hacker News users discuss Ren'Py's ease of use, especially for non-programmers, enabling them to create visual novels with minimal coding. Several commenters praise its accessibility and the large community supporting it. Some note its limitations, especially regarding more complex game mechanics beyond the visual novel genre, though acknowledge its suitability for its intended purpose. The scripting language is described as simple yet powerful enough for narrative-focused games. A few users mention its popularity for adult visual novels, though also highlight its use in more mainstream and non-adult projects. The engine's cross-platform compatibility and active development are also seen as positive aspects.
"The Deck" is an open-source, cross-platform card game engine built using Flutter. It provides a framework for developers to create and deploy their own digital card games across various platforms, including desktop, mobile, and web. The engine offers features such as networking for multiplayer gameplay, a customizable UI system for designing card visuals and game boards, and a scripting system using Lua for defining game logic and rules. This allows developers to focus on the unique aspects of their game design rather than the underlying technical implementation, accelerating development time and facilitating rapid prototyping. The project aims to be a versatile and accessible tool for both hobbyist and professional game developers.
Hacker News users generally expressed positive interest in The Deck, praising its cross-platform compatibility via Flutter, open-source nature, and potential for customization. Some questioned the long-term viability of maintaining such a project, and the choice of Flutter for a game engine. Several commenters suggested alternative technologies or approaches, such as Godot, Bevy, or a web-based implementation. A few users shared their own experiences with game development in Flutter, offering both encouragement and cautionary tales about performance and complexity. There was a brief discussion around monetization strategies and the difficulty of standing out in the crowded mobile gaming market.
OpenRA is a free and open-source real-time strategy game engine that recreates classic RTS titles like Command & Conquer, Red Alert, and Dune 2000. It modernizes these games with features like improved UI, gameplay enhancements, network multiplayer, and cross-platform compatibility. While remaining faithful to the original gameplay, OpenRA adds quality-of-life improvements, bug fixes, and even new content, providing a refreshed experience for veterans and newcomers alike. The project is actively developed and encourages community contributions.
HN users generally praise OpenRA's quality, noting its improved netcode, cross-platform compatibility, and active development. Several commenters share fond memories of playing the original games, and express appreciation for OpenRA's ability to revive these classics with modern conveniences. Some discuss specific features, like improved pathfinding and observer mode, while others highlight the challenges of balancing gameplay changes with nostalgia. The dedicated community and open-source nature of the project are also commended, with some users mentioning their own contributions. A few commenters mention alternative projects or express interest in seeing support for other classic RTS games.
Boardgame.io is an open-source JavaScript framework that simplifies the development of turn-based games, both digital and tabletop. It provides a core game engine with features like state management, turn order, and action validation, abstracting away common game mechanics. Developers define the game logic through a declarative format, specifying the game's setup, available player moves, and victory conditions. Boardgame.io also offers built-in support for various game clients (React, vanilla JS) and transports (local, network), making it easy to create and deploy games across different platforms. This allows developers to focus on the unique aspects of their game design rather than low-level implementation details.
HN commenters generally praised boardgame.io for its ease of use and helpfulness in prototyping board games. Several users shared positive experiences using it for game jams or personal projects, highlighting its clear documentation and gentle learning curve. Some discussed the advantages of its declarative approach and the built-in networking features for multiplayer games. A few comments mentioned potential areas for improvement, like better handling of complex game logic or more advanced UI features, but the overall sentiment was overwhelmingly positive, with many recommending it as a great starting point for web-based board game development. One commenter noted its use in a commercial project, a testament to its stability and practicality.
Summary of Comments ( 43 )
https://news.ycombinator.com/item?id=43258709
The Hacker News comments discuss various technical aspects contributing to FastDoom's speed. Several users point to the simplicity of the original Doom rendering engine and its reliance on fixed-point arithmetic as key factors. Some highlight the minimal processing demands placed on the original hardware, comparing it favorably to the more complex graphics pipelines of modern games. Others delve into specific optimizations like precalculated lookup tables for trigonometry and the use of binary space partitioning (BSP) for efficient rendering. The small size of the game's assets and levels are also noted as contributing to its quick loading times and performance. One commenter mentions that Carmack's careful attention to performance, combined with his deep understanding of the hardware, resulted in a game that pushed the limits of what was possible at the time. Another user expresses appreciation for the clean and understandable nature of the original source code, making it a great learning resource for aspiring game developers.
The Hacker News post "Why FastDoom Is Fast" (https://news.ycombinator.com/item?id=43258709) has several comments discussing various aspects of the original article about optimizing Doom's performance.
Many commenters express appreciation for the deep dive into Doom's optimization techniques. They highlight the ingenuity of the original developers in pushing the limits of the hardware at the time. Some commenters share their own experiences working with older hardware and the challenges and satisfactions of squeezing performance out of limited resources.
A recurring theme is the contrast between modern game development and the approaches used in older titles like Doom. Commenters point out how modern game engines often prioritize features and ease of development over performance, sometimes leading to bloat and inefficiency. Doom's lean, hand-optimized code is seen as a refreshing counterpoint to this trend.
Several comments delve into specific optimization techniques mentioned in the article. These include discussions of fixed-point arithmetic, lookup tables for trigonometric functions, and clever use of the CPU's instruction set. Commenters explain the benefits of these techniques in the context of the limited processing power and memory available at the time.
Some comments focus on the broader implications of the article's findings. They discuss how understanding these older techniques can be valuable for modern developers, even though the hardware landscape has changed drastically. Learning from the past can inspire creative solutions to performance challenges in current projects.
A few commenters share anecdotes about playing Doom in its early days and the impact it had on the gaming industry. These comments add a historical context to the technical discussion, reminding readers of the game's legacy and influence.
There's also discussion about the interplay between performance and gameplay. Commenters note how Doom's fast pace and responsive controls were a direct result of its optimized code. This reinforces the idea that technical excellence can directly enhance the player experience.
Finally, some comments provide links to related resources, such as other articles about game optimization and historical accounts of Doom's development. This adds further depth to the conversation and allows readers to explore the topic further. Overall, the comment section offers a rich discussion of Doom's optimization, its historical context, and its relevance to modern game development.