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MAME is a vintage hardware emulation platform designed to recreate the circuitry of arcade games, computers, and consoles to run original software on modern devices. It functions as a retro gaming preservation framework for managing, verifying, and archiving ROM sets and disk images to ensure long-term software accessibility. The project features a system debugging tool for inspecting emulated memory, CPU registers, and execution flow via breakpoints and disassembly. It also includes a Lua-based automation layer that exposes core system state and hardware controls for custom behavior and anal

This is the original C source code for the Quake game engine, a landmark first-person shooter engine from the 1990s. It is a retro game engine that renders 3D environments and processes player input in real time using CPU-based software rendering rather than GPU acceleration. The engine supports networked multiplayer gameplay over LAN or internet connections and is designed to be moddable, allowing users to create and run custom game modifications and levels. The engine's architecture includes a Binary Space Partition tree for efficient world geometry organization and visibility determination

يحتوي هذا المستودع على الكود المصدري للعبة C++ للعبة إطلاق نار من منظور الشخص الأول للاعب واحد. إنه تطبيق برمجي لمحرك Id Tech 4، مصمم للعرض ثلاثي الأبعاد مع التركيز على الإضاءة الموحدة والهندسة في الوقت الفعلي. يتيح المشروع تعديل منطق المحرك الأساسي وأنظمة العرض. وهو بمثابة مورد لتعديل محرك الألعاب الكلاسيكي، وتطوير ألعاب إطلاق النار من منظور الشخص الأول، والحفاظ على الألعاب القديمة. يستخدم المحرك خط أنابيب تظليل موحد وأحجام ظل استنسل لتأثيرات الإضاءة، إلى جانب تقسيم المساحة بشجرة BSP لاختبار الرؤية واكتشاف التصادم. يستخدم المحرك نظام كيانات قائماً على المكونات لإدارة كائنات اللعبة.

Quake-2 is a game engine designed for the development of first-person shooters and the rendering of three-dimensional environments. It provides the core framework for processing real-time physics and player input within interactive 3D spaces. The engine supports software extensibility, allowing for the direct modification of source code to change gameplay mechanics and engine behaviors. This makes it a resource for retro game engineering and the study of early 3D development techniques. Its technical capabilities include vertex-based software rendering, BSP-tree spatial partitioning, and PVS

Renderer is a low-level software graphics engine implemented in standard C for educational and experimental real-time computer graphics. It functions as a CPU rasterizer that computes vertex transformations, clipping, texturing, and lighting entirely through software computation without requiring hardware acceleration. The software includes a geometry pipeline supporting depth and alpha testing, geometry clipping and culling, and perspective-correct attribute interpolation. Its lighting and shading subsystem provides advanced physical simulation including metallic-roughness and specular-gloss