The following warnings occurred:
Warning [2] Undefined variable $awaitingusers - Line: 33 - File: global.php(779) : eval()'d code PHP 8.1.31 (Linux)
File Line Function
/global.php(779) : eval()'d code 33 errorHandler->error
/global.php 779 eval
/printthread.php 16 require_once
Warning [2] Undefined array key "style" - Line: 837 - File: global.php PHP 8.1.31 (Linux)
File Line Function
/global.php 837 errorHandler->error
/printthread.php 16 require_once
Warning [2] Undefined property: MyLanguage::$lang_select_default - Line: 4950 - File: inc/functions.php PHP 8.1.31 (Linux)
File Line Function
/inc/functions.php 4950 errorHandler->error
/global.php 837 build_theme_select
/printthread.php 16 require_once
Warning [2] Undefined array key 1 - Line: 1394 - File: inc/functions.php PHP 8.1.31 (Linux)
File Line Function
/inc/functions.php 1394 errorHandler->error
/inc/functions.php 1349 fetch_forum_permissions
/printthread.php 83 forum_permissions
Warning [2] Undefined array key "showimages" - Line: 174 - File: printthread.php PHP 8.1.31 (Linux)
File Line Function
/printthread.php 174 errorHandler->error
Warning [2] Undefined array key "showvideos" - Line: 179 - File: printthread.php PHP 8.1.31 (Linux)
File Line Function
/printthread.php 179 errorHandler->error
Warning [2] Undefined variable $css_align - Line: 1147 - File: inc/class_parser.php PHP 8.1.31 (Linux)
File Line Function
/inc/class_parser.php 1147 errorHandler->error
/inc/class_parser.php 1174 postParser->mycode_parse_img
[PHP]   postParser->mycode_parse_img_callback2
/inc/class_parser.php 481 preg_replace_callback
/inc/class_parser.php 177 postParser->parse_mycode
/printthread.php 184 postParser->parse_message
Warning [2] Undefined variable $css_align - Line: 1147 - File: inc/class_parser.php PHP 8.1.31 (Linux)
File Line Function
/inc/class_parser.php 1147 errorHandler->error
/inc/class_parser.php 1174 postParser->mycode_parse_img
[PHP]   postParser->mycode_parse_img_callback2
/inc/class_parser.php 481 preg_replace_callback
/inc/class_parser.php 177 postParser->parse_mycode
/printthread.php 184 postParser->parse_message



High Frontier Forums
new-physics update - Printable Version

+- High Frontier Forums (http://highfrontier.com/forum)
+-- Forum: General (http://highfrontier.com/forum/forumdisplay.php?fid=1)
+--- Forum: Dev Log (http://highfrontier.com/forum/forumdisplay.php?fid=15)
+--- Thread: new-physics update (/showthread.php?tid=204)

new-physics update - JoeStrout - 03-10-2017

As you might know, we've been working for what feels like way too long on a new physics engine.  This is necessary to support designs with counter-rotating cylinders, like these:

[Image: 640px-Spacecolony1.jpg]

It's been a bit of a slog... the math is very dense, and it's a LONG walk from square 1 to where you can get anything at all to actually do anything.

But today we reached a bit of a milestone... we finally got a kinetic tree (that is, a set of connected rigid bodies) to move as expected.  This demo has two rigidbodies (three, if you count the stationary base) connected by two joints, with each joint revolving at a constant rate.

[Image: source.gif]

I know it doesn't look like much, but believe me, this is a victory!  It proves that at least some of all that code we've been writing for weeks works as intended.

Now we'll build on this, step by step, until we get those O'Neill cylinders working!