How to implement a physics engine?

Let’s learn how to implement a physics engine. The most accurate or helpful solution is served by Game Development.

There are ten answers to this question.

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How can I implement a "boost pad" with Farseer/Box2D physics?

I'm trying to implement a boost pad in my XNA game using the Farseer Physics Engine. (This question applies to Box2D too, I would be happy to port working Box2D code to C#.) By "boost pad", I mean an object that can apply a force to the player that makes him go faster than he usually can under normal circumstances. These are most often seen in non-realistic racing games (e.g., Mario Kart, F-Zero). (For the record, my particular game is a 2D side-scroller.) I use a very simple Farseer...

Answer:

I wouldn't cap the player velocity like that. Instead, cap the velocity vector that comes out of your...

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Michael at Game Development Mark as irrelevant Undo

Other solutions

Is a reputation driven privilege system appropriate to implement community moderation on a higher-level physics site?

In the Stack Exchange network of Q&A sites, community moderation is implemented by means of a reputation based privilege system. This means, that the more reputation the users have, the more power they get to take part in governing and moderating...

Answer:

FWIW, I like the way quora does things....  I was a frequent poster at another physics site, and I stopped...

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Joseph Wang at Quora Mark as irrelevant Undo

What is the best framework to implement recommendation engine?

Edit:   A better way to form this question is. If you were to implement a professional grade recommendation engine.. something which is "good enough" for a production based environment, then how will your framework look like.. Backend, database...

Answer:

Easiest answer I've contributed. You're looking for Neo4j. Open source match making app. Easily adaptable...

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Kenny Bastani at Quora Mark as irrelevant Undo

What are good ways to implement API into search engine code?

I want to implement API but I DONT know how  to implement it into.

Answer:

We can edit the APIs and make it more flexible. That it can be fully integrate into search enginesâ...

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Anonymous at Quora Mark as irrelevant Undo

Answer:

You want features like sprite animation and rigid body physics. Then use any game engine with Box2D...

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The Cryptic Sniper at Yahoo! Answers Mark as irrelevant Undo

How to Implement Search Engine Portal?

How do I implement portal that can search various mailing lists and webpages for information. Do I need to write my own search engine or are their toolkits avaliable? I am familar with php, mysql and xhtml.

Answer:

You will need to write your own searchbot application. www.arteworks.biz - seo experts

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web_dev_... at Yahoo! Answers Mark as irrelevant Undo

Answer:

max possible efficiency(Carnot) = 1 - 603/ 949 = 0.365 = 36.5 % actual efficiency = 36.5 x 0.6 = 22...

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barrowbo... at Yahoo! Answers Mark as irrelevant Undo

Answer:

You've been given a formula for "maximum efficiency of a heat engine" in terms of the two...

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Randy P at Yahoo! Answers Mark as irrelevant Undo

Working the engine, physics...?

A.) If a heat engine pulls 6360.0 J of heat from the hot reservoir and exhausts 5374.2 J of heat to the cold reservoir, what was the work done by the engine? B.) What is the efficiency of this engine in percent?

Answer:

Work done W = 6360-5374.2 = 985.8 J efficiency = W/Qh = 985.8/6360 = 0.155

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Alicia at Yahoo! Answers Mark as irrelevant Undo

Where does one start when writing a rigid body physics engine?

As someone who has not studied high-level maths, I have a hard time going through the academic papers with the theory behind rigid body physics. Are there more practical examples of simple rigid body physics out there? 2D is fine.

Answer:

The best way is to start with spheres and then try to get behaving realistically. This side project...

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Jeffrey M. Barber at Quora Mark as irrelevant Undo

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