Jump to content
  • Advertisement

Archived

This topic is now archived and is closed to further replies.

jimmynelson

Updating 3d Objects + Collide And Slide

This topic is 5153 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

I was wondering how everyone goes by updating their 3d obects/entities in a 3d world. I pretty much have it done, but just interested in everyone else''s approach. As of now I am just using spheres for actors, testing each actor between actors and then the terrain and moving accordingly (in which only moving actors are updated). The loop iterations O(n^2) seems a bit redundant but I figure necessary since some of the tests are fast anyway and I use my own AABB tree to sort possible colliders. So I test each actor against the rest of the actors for a collision (a swept sphere - (non moving) sphere test), then the terrain, whichever is the closest collision gets attention, the new velocity vector is made and repeat. Some accuracy is lost since I don''t use 2 moving spheres but for simple actors it really doesn''t matter and no one is the wiser. Also I wonder how you decide when an actos is on the ground? Do you cast a ray downward and if it collides within a certain distance to the sphere''s radius and the tri''s normal is below a certain degree you assume he is standing on the ground?

Share this post


Link to post
Share on other sites
Advertisement

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

Participate in the game development conversation and more when you create an account on GameDev.net!

Sign me up!