Physics Engine
A physics engine is a software component that simulates physical systems, such as rigid body dynamics, collision detection, and soft body physics, using mathematical models and algorithms. It is primarily used in video games, simulations, and computer graphics to create realistic interactions between objects, including movement, forces, and collisions. By handling complex calculations, it allows developers to focus on gameplay and visual design rather than low-level physics implementation.
Developers should learn and use physics engines when creating interactive applications that require realistic physical behavior, such as video games (e.g., for character movement or object destruction), simulations (e.g., for engineering or training), and virtual reality experiences. It is essential for projects where accurate or stylized physics enhances user immersion, gameplay mechanics, or scientific modeling, saving time compared to building custom physics systems from scratch.