• Announcements

    • khawk

      Download the Game Design and Indie Game Marketing Freebook   07/19/17

      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.
Sign in to follow this  
Followers 0
SiddharthBhat

evolving the stability of a body

6 posts in this topic

Hi all!

 

I've been trying to "evolve" some creatures that are built up of circles and joints, and can also have a "booster" that propels them in a certain direction.

 

I've been using genetic algorithms to try and do this but I'm not really able to define what "stability" is. As in, I'm not able to identify if a structure is stable or not

 

As of now, I'm checking if it's able to stand on it's own for 20 seconds. If it can, then it's considered stable. But I'm finding it *really* hard to integrate movement into it. the AI isn't able to place the motors in effective positions so that they move :/

 

any ideas?

Thanks

Bollu

0

Share this post


Link to post
Share on other sites

Hi there,

 

It's a bit hard to comment on your post without atleast seeing a demo program or a video clip that exemplify your problem.

 

Cheers,

Mike

0

Share this post


Link to post
Share on other sites

Could you perhaps describe for us precisely and in detail what these unstable bodies do, that you find undesireable. I believe that if you can answer this question you are already halfway at the solution.

 

Cheers,

Mike

0

Share this post


Link to post
Share on other sites

If by "unstable" you mean "wobbling around and it may be able to stand up but it won't stay still," then you can use a few reference points on the creature's main polygon (or body or whatever you want to call it) and check for movement deltas. If the averae is above a set threshold, then it can be deemed unstable.

 

Additionally, you can use this as a more refined fitness amount (for your GA).

 

Good luck,

 

Selenaut

Edited by Selenaut
0

Share this post


Link to post
Share on other sites

If you want to evolve walking "legs", you can split the problem into three stages: first legs with a decent shape and position, then an assignment of motors that can move the legs arbitrarily enough, then a motor activation schedule that causes walking.

 

To make legs, you could probably graft standard pieces to the "body": for example you can start with a rather short outer edge facing down and triangulate the trapezoid between it and its projection on the ground plane with close to equilateral triangles with edge lengths in a certain range; motors that contract or extend struts (SODA Constructor style) can be placed in the almost vertical front and back edges to bend, shorten or lengthen the "leg".

 

How to move legs might allow a direct solution (deformed leg shape -> altered strut lengths -> forces), while making the whole model walk can be approached with genetic algorithms or the like.

0

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0