http://khayma.com/cgwoods/DOWNLOADS/seesaw.rar
this blend file which is in rar archive
will describe my problem
To have a real seesaw, a la HL2, you need to use the new hinge constraints shown in 2.42 preview.
I’d be interested in seeing the solution to this problem
hinge constraints
please! where can i dld them , i just saw the p2p constrains
but i have never saw the hinge constraints
is there a webpage with the new bullet fetures and how to use them?
Well, for the latest 2.42 previews and preview demos, check the bullet w/ blender forum on continuousphysics.com. One of the first threads you will see is the latest 2.42 preview ready for download, dl the physics demos and you will find the hinge constraint demo.
sorry , the BULLET forum is confusing
do anyone know a direct link 
i don’t want anybody to do my work , but i was not able to differ from the links
which one contains the HINGE constraint …
Direct link to the hinge demo here
I went ahead and made a seesaw, you can download it here. Can’t get the paddle to collide with the ground though.
I went ahead and made a seesaw, you can download it here. Can’t get the paddle to collide with the ground though.
The collision faces are switched off in the paddle. See updated version here:
http://www.continuousphysics.com/ftp/pub/test/index.php?dir=blender/&file=hinge_anoncompboy._updated.blend
Also, please notice you can fix two objects together, using 2 hinges:
See http://www.continuousphysics.com/ftp/pub/test/index.php?dir=blender/&file=fixed_constraint.blend
I just added both hinge.blend and fixed_constraint.blend to the physics demos in preview24.
http://www.continuousphysics.com/ftp/pub/test/index.php?dir=blender/&file=physics_demos-2.42-preview24.zip
Erwin
b-e-a-utiful thanks erwin the fixed constraint is pretty much dynamic parenting.
Thanks erwin. I fixed the problem and made a demo-ready scene - you can see both the seesaw and the dynamic hinged cubes, and watch the 2 interact - here
Just what I was thinking - it should answer all the “parent and unparent during game?” questions
erwin look here download
it’s the double constraint demo that you posted but i found a weird problem
the blue cube slowly keeps falling after the red cube goes to sleep but if i disable sleeping it dosnt it just looks like a click pendulum
At the moment there is an issue that constraints don’t activate sleeping. Either you make them all overlapping/connecting, or make them all ‘non sleeping’. This is on the ‘todo’.
“i disable sleeping it dosnt it just looks like a click pendulum” ?
What do you exactly mean? I disabled sleeping for the 3 objects, and it looked fine.
Erwin
no just disable sleeping for the red one and then it looks right but if i dont disable sleeping after the red one goes to sleep the blue one just falls
no just disable sleeping for the red one and then it looks right but if i dont disable sleeping after the red one goes to sleep the blue one just falls
That was the issue that constraints don’t impact sleeping.
It is fixed in preview33, see win32 build:
(re-uploaded, first upload was corrupted, so if you already downloaded before reading this message, please try again).
Erwin
preview 33 ¿ he he he
i’m dlding it …
erwin i’m planing to create a cool physics show , just wait everybody … 