Real-Time Physics Simulation Forum

hey I'm making a space game too (rts) :) But one thing with ODE that I noticed is that if you scale a collision object it's a huge performance hit. like at least half the speed or so. It might be the same with bullet too. I fixed it in that project by scaling my model and then creating the collision...

you just have to make the object active to make it come back to life. Best to set it so it doesn't go inactive in the first place though.

Glad to see someone else using ogre and btogre

Bullet use openCL for GPU acceration. Try out those demos and see if it speeds things up for you.

most likely you just have the libraries out of order.

link collision first, dynamics second.

so putting a negative time step causes the simulation to pause for that duration, interesting... that might actually be useful...

do you have any source code you could provide?

I don't anything like that for basic objects.

With bullet the demos are the best documentation there is unfortunately... But there is a raycast demo so I would take a look at that one.

Have you tried setting each object to active? they could just be turning themselves off if they are touching something.

also, gimpact objects may cause strange things like this too.

try playing with the source code for the demos, it has by far been the most help for me.

Yes you will likely lose your information on the block with the fracture method. and yeah the capsule method will likely sink and rise with each block you pass. There isn't a physics engine that I know of that will provide a smooth transition from one block to another simply because of the way physi...

Here is a better fracture demo, it shows off more of what it can do and what needs work yet. (hint: shoot the corners...)

Despite the issues I'm still considering implementing it into my game as is. Because it's pretty fun to play with, it just needs some fixes.

oops, posted in wrong forum...

ah ok, thanks!

the ragdoll demo uses cones, but it also uses only 1kg for each limb, try adjusting your weights, bullet seems to be a bit sensitive to differing weights.

Yes, because you see, in Bullet, source code documents you! lol

Yes I saw that but in your source code version nothing actually deforms... So did you add something to bullet to do that or am I missing something?