What is Physics engine: Definition and 15 Discussions

A physics engine is computer software that provides an approximate simulation of certain physical systems, such as rigid body dynamics (including collision detection), soft body dynamics, and fluid dynamics, of use in the domains of computer graphics, video games and film (CGI). Their main uses are in video games (typically as middleware), in which case the simulations are in real-time. The term is sometimes used more generally to describe any software system for simulating physical phenomena, such as high-performance scientific simulation.

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  1. S

    JavaScript Physics engine with "angular stiffness" at joints

    I have been experimenting with a minimal "toy" physics engine for JavaScript, called verlet.js but now I want to switch to a more versatile and feature rich engine. One feature I would like to use is the ability to assign a reference angle to a pair of segments (i.e. links, i.e. distance...
  2. R

    Need a better physics engine for my AI robotics

    Summary: video-> https://www.youtube.com/watch?v=6HnMPvNpEP0 ai good - physics poor. Ive stumbled apon an easy way to get a robot going with a gpu. I just treat it like a linear search and cap it off at the size of the gpu, and I get to brute force a good 3 steps in front. Only problem is...
  3. O

    What is the Best 2D Physics Engine for a Real-Time Simulation Program?

    Hello! I'm trying to write a 2D program that uses simple physics. I was wondering what would be the best 2D physics engine to use in my case, and if it even matter what engine I choose. I also want my simulation to run in real time, so at least 30 fps on a decent home computer. I prefer a fast...
  4. C

    Unlocking Realistic Rotational Collisions with Physics & Graphics Engines

    Hi all! I'm currently working on a graphics/physics engine. The following Wikipedia page was extremely helpful in making rectilinear collisions look natural: https://en.wikipedia.org/wiki/Elastic_collision#Two-dimensional Specifically, the very general vector form of the equation on the bottom...
  5. Archenox

    Academic background for physics engine?

    Hello everyone! :smile: I am almost finishing a bachelors degree in computer science and I would like to have some insight on the possible academic backgrounds and career opportunities for someone who wants to be working with the creation and development of a physics engine. Considering that...
  6. S

    Thermodynamic question: first law

    Estimate the kilowatt pump you would need to pump 450 L/min of liquid water at 20c through a rise in elevation of 100m. Assume the water is pumped adiabatically and with negligible changes changes in temperature and kinetic energy. answer given to us is -7.35kw.. Question.. what formula should...
  7. S

    Can Physics Optimize the Storage of L Beams in a Confined Space?

    Hi What is the most efficient way to theoretically store an L beam in a given area, the more beams in that area the better, obvioustly this can't be done in real life but with a physics engine could maybe be calculated? Note: Each beam can be at any rotation or any axis. The area is 21.06 cm...
  8. A

    How do you make a realistic physics engine?

    Here's what I need, and this might sound far-fetched, but please answer it to the best of your ability. I want to create a car engine in blender, and then add a physics engine to make it run. The thing is, I don't want to animate it, I want to apply python script that can actually make the...
  9. J

    MHB How Much Power is Needed to Pump Water Up 10 Meters and Out at High Speed?

    An engine pumps water from a river 10m below its own level and discharges it through a nozzle of diameter 10cm with a speed of 50ms^-1. Find the power required assuming (a) no losses. (b) 70% efficiency. Water weighs 10^3kgm^-3. (g = 10ms^-2) Please help me with this problem, I've bever come...
  10. K

    UNBELIEVABLE Grand Theft Auto 5 physics engine

    Allegedly, this video is a test demo of the physics and vehicle damage engine that will be included in the upcoming video game Grand Theft Auto 5. I'm not sure if this a hoax or if it's the real deal. If it's true then we will finally have some breathtakingly realistic crashes. Although...
  11. W

    RPG physics engine or building everything together

    I am doing attemp to build rpg with realistic world and AI. So what i need to simulate the persons are moving from input so them not there will be anatomy simulation. My list: 1.full range of collision types absolutely elastic and inelastic and things between them 2.dynamics in air and...
  12. I

    What to study in prep for writing a physics engine?

    I'd like to first say that I'm not really sure which forum this is supposed to belong in. This one seems to fit best, but my question may be better in one of the math/physics forums... I'm planning on going through the resources Chris Hecker recommends in his article Physics References...
  13. P

    Academic Physics Engine: Free Simulation Software

    Hello! First I would like to greet everyone on this forum. I'm a electrical engineering student in Portugal and I found this forum very helpful so I decided to join. I'm now having a subject about vibrations and I was wondering if anyone knows about some freeware software that can run...
  14. X

    Developing a game that requires a physics engine with little knowledge

    Hello, This is my first post and if anyone can direct me to any links that would help I would appreciate it, but I'm having trouble understanding this on my own. I am developing a game with a physics engine and the scope I have in mind would require these calculations. I understand some of...
  15. N

    Working on a general physics engine

    I'm working on a general physics engine for fun. Objects have two velocity vectors: rotation and translation. When a collision is detected, objects are told the point of collision (p) and the object that they hit. The object decomposes its translational velocity into the component pointing...