Hello, i have a question. How can i limt (min, max) rotation of my cannon ? i have binded with key Q and E but there is no limit of rotation, the model passes on my flor :S . Pls help /www.dodaj.rs/f/1k/ga/wyrdMQ6/untitled.png <- here is the image
Rigid body joints?
Don’t parent, set the object as a rigid body and then apply torque
or alternatly try a dynamic or torque using AngV
So
Set object Dynamic or Rigid body
Add constraint Rigid body joint
Set to 6dof and set limits,
pin it to a empty
make sure origin is the origin of item you want to rotate,
@BPR: involving physics doesnt always solve things
you can try constraints, they are logic bricks that can limit rotation or location off an object in a especific axis, also, i couldnt see your image, it threw me a 404 error
edit: i found it here
Here is both
Logic + Property
and another that is
physics+ constraints 
Attachments
Xample2.blend (439 KB)
No problem